Fixed group scope

Cargo.lock

@@ -61,12 +61,15 @@ checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
 [[package]]
 name = "amnezia-fellow"
-version = "0.1.1"
+version = "1.0.1"
 dependencies = [
+ "async-trait",
  "base64 0.22.1",
  "cot",
  "curve25519-dalek",
  "getrandom 0.3.4",
+ "hex",
+ "hmac",
  "k8s-openapi",
  "kube",
  "miniz_oxide",
@@ -76,9 +79,11 @@ dependencies = [
  "schemars 0.9.0",
  "serde",
  "serde_json",
+ "sha2",
  "tokio",
  "tracing",
  "tracing-subscriber",
+ "url",
 ]
 
 [[package]]

Cargo.toml

@@ -1,16 +1,17 @@
 [package]
 name = "amnezia-fellow"
-version = "0.1.1"
+version = "1.0.1"
 edition = "2024"
-description = "Amnezia VPN client manager with SSO, SQLite, and Kubernetes Secret sync"
+description = "Amnezia VPN client manager with SSO, SQLite/PostgreSQL, and Kubernetes Secret sync"
 
 [dependencies]
-cot = { version = "0.6.0", default-features = false, features = ["sqlite", "json", "openapi", "swagger-ui"] }
+async-trait = "0.1"
+cot = { version = "0.6.0", default-features = false, features = ["sqlite", "postgres", "json", "openapi", "swagger-ui"] }
 schemars = { version = "0.9", features = ["derive"] }
 serde = { version = "1", features = ["derive"] }
 openidconnect = "4.0"
-reqwest = { version = "0.12", default-features = false, features = ["rustls-tls"] }
-tokio = { version = "1", features = ["sync"] }
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls"] }
+tokio = { version = "1", features = ["rt", "sync", "time"] }
 base64 = "0.22"
 miniz_oxide = "0.8"
 qrcode = "0.14"
@@ -19,5 +20,9 @@ tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 curve25519-dalek = "4.1"
 getrandom = "0.3"
+hex = "0.4"
+hmac = "0.12"
 kube = { version = "3.1.0", default-features = false, features = ["client", "rustls-tls", "ring"] }
 k8s-openapi = { version = "0.27.1", features = ["v1_32"] }
+sha2 = "0.10"
+url = "2"

README.md

@@ -2,7 +2,7 @@
 
 Amnezia VPN client manager written in Rust on top of the public [`cot`](https://cot.rs) framework.
 
-The app uses SQLite as the source of truth, authenticates users through OIDC/SSO, renders AmneziaWG client peers into a Kubernetes Secret, and avoids updating that Secret when the rendered content is byte-for-byte identical.
+The app uses SQLite or PostgreSQL as the source of truth, authenticates users through OIDC/SSO, renders AmneziaWG client peers into a Kubernetes Secret, and avoids updating that Secret when the rendered content is byte-for-byte identical.
 
 ## Quick Start
 
@@ -53,17 +53,20 @@ The OIDC groups claim is expected to be `groups`.
 
 ## VPN Data Model
 
-SQLite stores all client data needed to restore configs:
+The database stores all client data needed to restore configs:
 
 - owner user id
 - display name
 - assigned IPv4 address
 - public key
 - private key
+- optional owner-scoped connectivity group
 - enabled flag
 - created/updated timestamps
 
-The Kubernetes Secret is derived from the database. Active clients are rendered into one configured Secret key, `peers.conf` by default.
+The Kubernetes Secret is derived from the database. Active clients are rendered
+into `peers.conf`; exact same-group IPv4 pairs are rendered into
+`policy.conf`. Clients without a group are isolated from other VPN clients.
 
 ## Kubernetes Sync
 
@@ -95,7 +98,8 @@ All settings use `AMNEZIA_FELLOW_` prefix. Priority is:
 
 | Variable | Description | Default |
 | --- | --- | --- |
-| `AMNEZIA_FELLOW_DATABASE_URL` | SQLite connection URL | `sqlite://amnezia-fellow.sqlite3?mode=rwc` |
+| `AMNEZIA_FELLOW_DATABASE_URL` | SQLite or PostgreSQL connection URL. PostgreSQL URLs must start with `postgresql://`. | `sqlite://amnezia-fellow.sqlite3?mode=rwc` |
+| `AMNEZIA_FELLOW_MIGRATE_SQLITE` | Optional SQLite path/URL imported into PostgreSQL once on startup | empty |
 | `AMNEZIA_FELLOW_LOG_LEVEL` | Tracing filter | `info` |
 | `AMNEZIA_FELLOW_AUTH_PASSWORD_ENABLED` | Enable password login | `true` |
 | `AMNEZIA_FELLOW_AUTH_SSO_ENABLED` | Enable OIDC login | `false` |
@@ -114,16 +118,61 @@ All settings use `AMNEZIA_FELLOW_` prefix. Priority is:
 | `AMNEZIA_FELLOW_VPN_DNS` | DNS servers in generated configs | `1.1.1.1, 8.8.8.8` |
 | `AMNEZIA_FELLOW_VPN_MTU` | MTU in generated configs | `1376` |
 | `AMNEZIA_FELLOW_SWAGGER_ENABLED` | Serve Swagger UI at `/swagger/` | `false` |
+| `AMNEZIA_FELLOW_TELEGRAM_BOT_ENABLED` | Enable Telegram bot/Web App integration | `false` |
+| `AMNEZIA_FELLOW_TELEGRAM_BOT_USERNAME` | Telegram bot username, with or without `@` | empty |
+| `AMNEZIA_FELLOW_TELEGRAM_BOT_TOKEN` | Telegram bot token used to verify Web App `initData` | empty |
+
+## PostgreSQL Migration
+
+To move from SQLite to PostgreSQL, start the app with a PostgreSQL database URL
+and point `AMNEZIA_FELLOW_MIGRATE_SQLITE` at the existing SQLite file:
+
+```bash
+AMNEZIA_FELLOW_DATABASE_URL=postgresql://user:pass@postgres:5432/amnezia_fellow
+AMNEZIA_FELLOW_MIGRATE_SQLITE=/data/amnezia-fellow.sqlite3
+```
+
+On startup, the app runs its migrations on PostgreSQL, opens the SQLite source
+read/write, applies any missing app migrations there, copies config entries,
+database sessions, users, OIDC links, Telegram link state, and VPN clients,
+then writes an import marker into PostgreSQL. If the marker already exists, the
+import is skipped. If PostgreSQL already contains app data but has no marker,
+startup fails instead of merging two databases implicitly.
+
+## Telegram Bot
+
+Configure the bot through the admin Settings page or the matching environment variables:
+
+```bash
+AMNEZIA_FELLOW_TELEGRAM_BOT_ENABLED=true
+AMNEZIA_FELLOW_TELEGRAM_BOT_USERNAME=<BOT_USERNAME>
+AMNEZIA_FELLOW_TELEGRAM_BOT_TOKEN=<BOT_TOKEN>
+```
+
+In BotFather, create or reuse the same bot and set its Web App URL to
+`https://<APP_HOST>/configs`. This app runs the bot in the same process with
+`getUpdates` polling, so do not configure a separate webhook for the same bot.
+For browser-based linking, users copy a one-time secret code from the portal and
+send it to this bot; the app reads the Telegram sender ID from that message.
+Users must open the bot and send `/start` once before notifications can be
+delivered.
 
 ## API
 
-The JSON API is session-authenticated:
+The JSON API is session-authenticated unless noted:
 
 - `GET /api/me`
 - `GET /api/vpn-clients`
 - `GET /api/vpn-status`
+- `GET /api/telegram-link/status`
+- `POST /api/telegram-login/webapp` (public Telegram `initData` login)
+- `POST /api/telegram-link/webapp`
+- `POST /api/telegram-link/start`
+- `POST /api/telegram-link/decline`
+- `POST /api/telegram-link/unlink`
 - `POST /api/vpn-clients`
 - `POST /api/vpn-clients/{id}/enabled`
+- `POST /api/vpn-clients/{id}/group` changes the server-side connectivity group without changing the client config
 - `DELETE /api/vpn-clients/{id}`
 - `GET /api/vpn-clients/{id}/config` returns `servers[]` with one raw AWG config and one Amnezia `vpn://` import link per registered endpoint
 - `POST /api/vpn-clients/sync`

src/admin/views.rs

@@ -84,6 +84,11 @@ fn config_display_entries(config: &AppConfig, sources: &ConfigSources) -> Vec<Co
             config.database_url.clone(),
             defaults.database_url.clone()
         ),
+        entry!(
+            migrate_sqlite,
+            config.migrate_sqlite.clone(),
+            defaults.migrate_sqlite.clone()
+        ),
         entry!(
             oidc_issuer,
             config.oidc_issuer.clone(),
@@ -180,6 +185,21 @@ fn config_display_entries(config: &AppConfig, sources: &ConfigSources) -> Vec<Co
             config.swagger_enabled.to_string(),
             defaults.swagger_enabled.to_string()
         ),
+        entry!(
+            telegram_bot_enabled,
+            config.telegram_bot_enabled.to_string(),
+            defaults.telegram_bot_enabled.to_string()
+        ),
+        entry!(
+            telegram_bot_username,
+            config.telegram_bot_username.clone(),
+            defaults.telegram_bot_username.clone()
+        ),
+        entry!(
+            telegram_bot_token,
+            config.telegram_bot_token.clone(),
+            defaults.telegram_bot_token.clone()
+        ),
     ]
 }
 
@@ -283,6 +303,9 @@ pub struct AdminSettingsRequest {
     vpn_dns: String,
     vpn_mtu: u16,
     swagger_enabled: bool,
+    telegram_bot_enabled: bool,
+    telegram_bot_username: String,
+    telegram_bot_token: String,
 }
 
 #[derive(Debug, Serialize)]
@@ -749,15 +772,91 @@ fn settings_fields(config: &AppConfig, sources: &ConfigSources) -> Vec<AdminSett
             config.swagger_enabled.to_string(),
             defaults.swagger_enabled.to_string()
         ),
+        field!(
+            "telegram",
+            "bool",
+            telegram_bot_enabled,
+            config.telegram_bot_enabled.to_string(),
+            defaults.telegram_bot_enabled.to_string()
+        ),
+        field!(
+            "telegram",
+            "text",
+            telegram_bot_username,
+            config.telegram_bot_username.clone(),
+            defaults.telegram_bot_username.clone()
+        ),
+        field!(
+            "telegram",
+            "password",
+            telegram_bot_token,
+            config.telegram_bot_token.clone(),
+            defaults.telegram_bot_token.clone()
+        ),
+        AdminSettingField {
+            key: "telegram_setup_instructions".into(),
+            env_var: String::new(),
+            value: telegram_setup_instructions(config),
+            default_value: String::new(),
+            source: "default",
+            secret: false,
+            kind: "info",
+            section: "telegram",
+        },
     ]
 }
 
+fn telegram_setup_instructions(config: &AppConfig) -> String {
+    let username = config
+        .telegram_bot_username
+        .trim()
+        .trim_start_matches('@')
+        .trim();
+    let username_value = if username.is_empty() {
+        "<BOT_USERNAME>"
+    } else {
+        username
+    };
+    let token_value = if config.telegram_bot_token.trim().is_empty() {
+        "<BOT_TOKEN>"
+    } else {
+        "<configured bot token>"
+    };
+    let bot_link = if username.is_empty() {
+        "https://t.me/<BOT_USERNAME>".to_owned()
+    } else {
+        format!("https://t.me/{username}")
+    };
+    let current_bot = if username.is_empty() {
+        "<BOT_USERNAME>".to_owned()
+    } else if config.telegram_bot_enabled {
+        format!("@{username}")
+    } else {
+        format!("@{username} (disabled)")
+    };
+
+    format!(
+        "Current bot: {current_bot}\n\
+         Bot link: {bot_link}\n\n\
+         Config:\n\
+         AMNEZIA_FELLOW_TELEGRAM_BOT_ENABLED=true\n\
+         AMNEZIA_FELLOW_TELEGRAM_BOT_USERNAME={username_value}\n\
+         AMNEZIA_FELLOW_TELEGRAM_BOT_TOKEN={token_value}\n\n\
+         BotFather:\n\
+         1. Create or reuse this bot and set the Web App URL to https://<APP_HOST>/configs.\n\
+         2. Keep webhook disabled: this process receives bot messages with getUpdates polling.\n\
+         3. Users open the portal, copy the one-time secret code and send it to this bot.\n\
+         4. Users must open the bot and send /start once before notifications can work."
+    )
+}
+
 async fn save_settings_request(db: &Database, data: &AdminSettingsRequest) -> cot::Result<()> {
     let vpn_mtu = data.vpn_mtu.to_string();
     let auth_password_enabled = data.auth_password_enabled.to_string();
     let auth_sso_enabled = data.auth_sso_enabled.to_string();
     let swagger_enabled = data.swagger_enabled.to_string();
-    let fields: [(&str, &str); 19] = [
+    let telegram_bot_enabled = data.telegram_bot_enabled.to_string();
+    let fields: [(&str, &str); 22] = [
         ("auth_password_enabled", &auth_password_enabled),
         ("auth_sso_enabled", &auth_sso_enabled),
         ("oidc_button_text", &data.oidc_button_text),
@@ -780,6 +879,9 @@ async fn save_settings_request(db: &Database, data: &AdminSettingsRequest) -> co
         ("vpn_dns", &data.vpn_dns),
         ("vpn_mtu", &vpn_mtu),
         ("swagger_enabled", &swagger_enabled),
+        ("telegram_bot_enabled", &telegram_bot_enabled),
+        ("telegram_bot_username", &data.telegram_bot_username),
+        ("telegram_bot_token", &data.telegram_bot_token),
     ];
     for (key, value) in fields {
         let mut entry = ConfigEntry::new(key.to_owned(), value.to_owned());

src/api/mod.rs

@@ -1,4 +1,5 @@
 use std::collections::HashMap;
+use std::time::Duration;
 
 use cot::db::Database;
 use cot::json::Json;
@@ -15,14 +16,35 @@ use serde::{Deserialize, Serialize};
 
 use crate::config::AppConfig;
 use crate::user::User;
-use crate::{auth, vpn};
+use crate::{auth, telegram, vpn};
 
 // ---------------------------------------------------------------------------
 // JSON error helper
 // ---------------------------------------------------------------------------
 
 fn json_error(status: cot::http::StatusCode, message: &str) -> cot::response::Response {
-    let body = serde_json::json!({ "error": message });
+    json_error_typed(
+        status,
+        status.canonical_reason().unwrap_or("request_failed"),
+        status.canonical_reason().unwrap_or("Request failed"),
+        message,
+        "",
+    )
+}
+
+fn json_error_typed(
+    status: cot::http::StatusCode,
+    code: &str,
+    title: &str,
+    message: &str,
+    detail: &str,
+) -> cot::response::Response {
+    let body = serde_json::json!({
+        "code": code,
+        "title": title,
+        "error": message,
+        "detail": detail,
+    });
     cot::http::Response::builder()
         .status(status)
         .header(cot::http::header::CONTENT_TYPE, "application/json")
@@ -65,17 +87,20 @@ async fn me_handler(session: Session, db: Database) -> cot::Result<cot::response
 struct VpnClientsResponse {
     role: String,
     clients: Vec<vpn::VpnClientView>,
+    groups: Vec<String>,
 }
 
 #[derive(Debug, Deserialize, JsonSchema)]
 struct CreateVpnClientRequest {
     name: String,
+    group_name: Option<String>,
 }
 
 #[derive(Debug, Serialize, JsonSchema)]
 struct MutateVpnClientResponse {
     client: vpn::VpnClientView,
     sync: vpn::SecretSyncResult,
+    notice: Option<ApiNotice>,
 }
 
 #[derive(Debug, Deserialize, JsonSchema)]
@@ -83,9 +108,24 @@ struct SetEnabledRequest {
     enabled: bool,
 }
 
+#[derive(Debug, Deserialize, JsonSchema)]
+struct SetGroupRequest {
+    group_name: Option<String>,
+}
+
 #[derive(Debug, Serialize, JsonSchema)]
 struct DeleteVpnClientResponse {
     sync: vpn::SecretSyncResult,
+    notice: Option<ApiNotice>,
+}
+
+#[derive(Debug, Clone, Serialize, JsonSchema)]
+struct ApiNotice {
+    kind: String,
+    code: String,
+    title: String,
+    message: String,
+    detail: String,
 }
 
 #[derive(Debug, Serialize, JsonSchema)]
@@ -111,6 +151,36 @@ struct ClientPath {
     id: i64,
 }
 
+#[derive(Debug, Serialize, JsonSchema)]
+struct TelegramLinkStatusResponse {
+    enabled: bool,
+    bot_username: String,
+    bot_url: String,
+    linked: bool,
+    declined: bool,
+    pending: bool,
+    pending_secret: Option<String>,
+    pending_expires_at: Option<i64>,
+    telegram_id: Option<String>,
+}
+
+#[derive(Debug, Serialize, JsonSchema)]
+struct TelegramLinkResponse {
+    status: TelegramLinkStatusResponse,
+}
+
+#[derive(Debug, Serialize, JsonSchema)]
+struct TelegramLoginResponse {
+    redirect_to: String,
+}
+
+#[derive(Debug, Deserialize, JsonSchema)]
+struct TelegramWebAppLinkRequest {
+    init_data: String,
+}
+
+const TELEGRAM_INIT_DATA_MAX_AGE: Duration = Duration::from_secs(86_400);
+
 async fn vpn_clients_handler(
     session: Session,
     db: Database,
@@ -126,6 +196,14 @@ async fn vpn_clients_handler(
         .await
         .map_err(|e| cot::Error::internal(format!("failed to list clients: {e}")))?;
     let owner_map = owner_view_map(&db, &clients).await?;
+    let mut groups = clients
+        .iter()
+        .filter(|client| client.owner_user_id() == user.id)
+        .filter_map(vpn::VpnClient::group_name_str)
+        .map(str::to_owned)
+        .collect::<Vec<_>>();
+    groups.sort();
+    groups.dedup();
     let clients = clients
         .into_iter()
         .map(|client| client_view_with_owner(client, &owner_map))
@@ -134,6 +212,7 @@ async fn vpn_clients_handler(
     Json(VpnClientsResponse {
         role: user.role.code().to_owned(),
         clients,
+        groups,
     })
     .into_response()
 }
@@ -154,13 +233,236 @@ async fn vpn_status_handler(
     tracing::debug!(user_id = user.id, "VPN rollout status requested");
 
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let status = vpn::read_rollout_status_from_kubernetes(&config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to read VPN rollout status: {e}")))?;
+    let mut status = match vpn::read_rollout_status_from_kubernetes(&config).await {
+        Ok(status) => status,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::SERVICE_UNAVAILABLE,
+                "vpn_status_unavailable",
+                "Server status unavailable",
+                "Could not load VPN server status.",
+                &e,
+            ));
+        }
+    };
+    if user.role != auth::Role::Admin {
+        let disabled = vpn::disabled_endpoint_names(&config);
+        status.pods.retain(|pod| !disabled.contains(&pod.node_name));
+    }
 
     Json(status).into_response()
 }
 
+async fn telegram_link_status_handler(
+    session: Session,
+    db: Database,
+) -> cot::Result<cot::response::Response> {
+    let user = match api_user_record(&session, &db).await? {
+        Ok(user) => user,
+        Err(response) => return Ok(response),
+    };
+    let (config, _) = AppConfig::load_with_db(&db).await;
+
+    Json(telegram_status_response(&config, &user)).into_response()
+}
+
+async fn telegram_link_webapp_handler(
+    session: Session,
+    db: Database,
+    Json(request): Json<TelegramWebAppLinkRequest>,
+) -> cot::Result<cot::response::Response> {
+    let mut user = match api_user_record(&session, &db).await? {
+        Ok(user) => user,
+        Err(response) => return Ok(response),
+    };
+    let (config, _) = AppConfig::load_with_db(&db).await;
+    if !config.telegram_bot_enabled {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::CONFLICT,
+            "telegram_disabled",
+            "Telegram is disabled",
+            "Telegram integration is disabled by the administrator.",
+            "",
+        ));
+    }
+
+    let telegram_user = match telegram::validate_web_app_init_data(
+        &request.init_data,
+        &config.telegram_bot_token,
+        TELEGRAM_INIT_DATA_MAX_AGE,
+    ) {
+        Ok(user) => user,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::BAD_REQUEST,
+                "telegram_webapp_auth_failed",
+                "Telegram verification failed",
+                "Could not verify Telegram Web App data.",
+                &e.to_string(),
+            ));
+        }
+    };
+    let telegram_id = telegram_user.id.to_string();
+    if let Some(response) = link_telegram_id(&db, &mut user, &telegram_id).await? {
+        return Ok(response);
+    }
+
+    Json(TelegramLinkResponse {
+        status: telegram_status_response(&config, &user),
+    })
+    .into_response()
+}
+
+async fn telegram_login_webapp_handler(
+    session: Session,
+    db: Database,
+    Json(request): Json<TelegramWebAppLinkRequest>,
+) -> cot::Result<cot::response::Response> {
+    let (config, _) = AppConfig::load_with_db(&db).await;
+    if !config.telegram_bot_enabled {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::CONFLICT,
+            "telegram_disabled",
+            "Telegram is disabled",
+            "Telegram integration is disabled by the administrator.",
+            "",
+        ));
+    }
+
+    let telegram_user = match telegram::validate_web_app_init_data(
+        &request.init_data,
+        &config.telegram_bot_token,
+        TELEGRAM_INIT_DATA_MAX_AGE,
+    ) {
+        Ok(user) => user,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::BAD_REQUEST,
+                "telegram_webapp_auth_failed",
+                "Telegram verification failed",
+                "Could not verify Telegram Web App data.",
+                &e.to_string(),
+            ));
+        }
+    };
+
+    let telegram_id = telegram_user.id.to_string();
+    let Some(user) = User::get_by_telegram_id(&db, &telegram_id)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to load Telegram user: {e}")))?
+    else {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::UNAUTHORIZED,
+            "telegram_account_not_linked",
+            "Telegram is not linked",
+            "This Telegram account is not connected to any VPN account.",
+            "",
+        ));
+    };
+
+    if !user.is_active() {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::FORBIDDEN,
+            "user_inactive",
+            "Account is inactive",
+            "This account is inactive.",
+            "",
+        ));
+    }
+
+    auth::login(&session, user.id_val()).await?;
+
+    Json(TelegramLoginResponse {
+        redirect_to: "/configs".to_owned(),
+    })
+    .into_response()
+}
+
+async fn telegram_link_start_handler(
+    session: Session,
+    db: Database,
+) -> cot::Result<cot::response::Response> {
+    let mut user = match api_user_record(&session, &db).await? {
+        Ok(user) => user,
+        Err(response) => return Ok(response),
+    };
+    let (config, _) = AppConfig::load_with_db(&db).await;
+    if !config.telegram_bot_enabled {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::CONFLICT,
+            "telegram_disabled",
+            "Telegram is disabled",
+            "Telegram integration is disabled by the administrator.",
+            "",
+        ));
+    }
+
+    let code = create_unique_telegram_link_code(&db).await?;
+    let now = telegram::now_unix_seconds();
+    user.set_telegram_link_code(&db, Some(&code), Some(now))
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to save Telegram link code: {e}")))?;
+    if user.telegram_id() == Some("") {
+        user.set_telegram_id(&db, None).await.map_err(|e| {
+            cot::Error::internal(format!("failed to reset Telegram preference: {e}"))
+        })?;
+    }
+
+    Json(TelegramLinkResponse {
+        status: telegram_status_response(&config, &user),
+    })
+    .into_response()
+}
+
+async fn telegram_link_decline_handler(
+    session: Session,
+    db: Database,
+) -> cot::Result<cot::response::Response> {
+    let mut user = match api_user_record(&session, &db).await? {
+        Ok(user) => user,
+        Err(response) => return Ok(response),
+    };
+    let (config, _) = AppConfig::load_with_db(&db).await;
+    if !config.telegram_bot_enabled {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::CONFLICT,
+            "telegram_disabled",
+            "Telegram is disabled",
+            "Telegram integration is disabled by the administrator.",
+            "",
+        ));
+    }
+
+    user.decline_telegram_link(&db)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to save Telegram preference: {e}")))?;
+
+    Json(TelegramLinkResponse {
+        status: telegram_status_response(&config, &user),
+    })
+    .into_response()
+}
+
+async fn telegram_link_unlink_handler(
+    session: Session,
+    db: Database,
+) -> cot::Result<cot::response::Response> {
+    let mut user = match api_user_record(&session, &db).await? {
+        Ok(user) => user,
+        Err(response) => return Ok(response),
+    };
+    let (config, _) = AppConfig::load_with_db(&db).await;
+
+    user.clear_telegram_link(&db)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to clear Telegram link: {e}")))?;
+
+    Json(TelegramLinkResponse {
+        status: telegram_status_response(&config, &user),
+    })
+    .into_response()
+}
+
 async fn create_vpn_client_handler(
     session: Session,
     db: Database,
@@ -177,18 +479,77 @@ async fn create_vpn_client_handler(
     };
 
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let client =
-        vpn::VpnClient::create_for_owner(&db, user.id, &request.name, &config.vpn_client_cidr)
-            .await
-            .map_err(|e| cot::Error::internal(format!("failed to create client: {e}")))?;
-    let sync = vpn::sync_from_database(&db, &config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to sync client Secret: {e}")))?;
+    let client = match vpn::VpnClient::create_for_owner(
+        &db,
+        user.id,
+        &request.name,
+        request.group_name.as_deref(),
+        &config.vpn_client_cidr,
+    )
+    .await
+    {
+        Ok(client) => client,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::BAD_REQUEST,
+                "client_create_failed",
+                "Could not create key",
+                "The key was not created.",
+                &e.to_string(),
+            ));
+        }
+    };
+    let (sync, notice) = sync_after_client_mutation(&db, &config).await;
 
     let owner_map = owner_view_map(&db, std::slice::from_ref(&client)).await?;
     Json(MutateVpnClientResponse {
         client: client_view_with_owner(client, &owner_map),
         sync,
+        notice,
+    })
+    .into_response()
+}
+
+async fn set_vpn_client_group_handler(
+    session: Session,
+    db: Database,
+    Path(path): Path<ClientPath>,
+    Json(request): Json<SetGroupRequest>,
+) -> cot::Result<cot::response::Response> {
+    let user = match auth::require_user_or_redirect(&session, &db).await {
+        Ok(user) => user,
+        Err(_) => {
+            return Ok(json_error(
+                cot::http::StatusCode::UNAUTHORIZED,
+                "not authenticated",
+            ));
+        }
+    };
+
+    let Some(mut client) = vpn::VpnClient::get_visible(&db, &user, path.id)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to load client: {e}")))?
+    else {
+        return Ok(json_error(cot::http::StatusCode::NOT_FOUND, "not found"));
+    };
+
+    if let Err(e) = client.set_group(&db, request.group_name.as_deref()).await {
+        return Ok(json_error_typed(
+            cot::http::StatusCode::BAD_REQUEST,
+            "client_group_update_failed",
+            "Could not change group",
+            "The client group was not changed.",
+            &e.to_string(),
+        ));
+    }
+    let (config, _) = AppConfig::load_with_db(&db).await;
+    let (sync, notice) = sync_after_client_mutation(&db, &config).await;
+    let owner_map = owner_view_map(&db, std::slice::from_ref(&client)).await?;
+
+    Json(MutateVpnClientResponse {
+        client: client_view_with_owner(client, &owner_map),
+        sync,
+        notice,
     })
     .into_response()
 }
@@ -221,14 +582,13 @@ async fn set_vpn_client_enabled_handler(
         .await
         .map_err(|e| cot::Error::internal(format!("failed to update client: {e}")))?;
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let sync = vpn::sync_from_database(&db, &config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to sync client Secret: {e}")))?;
+    let (sync, notice) = sync_after_client_mutation(&db, &config).await;
 
     let owner_map = owner_view_map(&db, std::slice::from_ref(&client)).await?;
     Json(MutateVpnClientResponse {
         client: client_view_with_owner(client, &owner_map),
         sync,
+        notice,
     })
     .into_response()
 }
@@ -259,11 +619,9 @@ async fn delete_vpn_client_handler(
         .await
         .map_err(|e| cot::Error::internal(format!("failed to delete client: {e}")))?;
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let sync = vpn::sync_from_database(&db, &config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to sync client Secret: {e}")))?;
+    let (sync, notice) = sync_after_client_mutation(&db, &config).await;
 
-    Json(DeleteVpnClientResponse { sync }).into_response()
+    Json(DeleteVpnClientResponse { sync, notice }).into_response()
 }
 
 async fn vpn_client_config_handler(
@@ -289,9 +647,18 @@ async fn vpn_client_config_handler(
     };
 
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let runtime = vpn::read_runtime_from_kubernetes(&config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to read VPN runtime: {e}")))?;
+    let runtime = match vpn::read_runtime_from_kubernetes(&config).await {
+        Ok(runtime) => runtime,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::SERVICE_UNAVAILABLE,
+                "vpn_runtime_unavailable",
+                "VPN servers are unavailable",
+                "Could not load VPN server list.",
+                &e,
+            ));
+        }
+    };
     let endpoints = vpn::filter_enabled_endpoints(runtime.endpoints, &config);
     if endpoints.is_empty() {
         return Ok(json_error(
@@ -381,6 +748,140 @@ fn client_view_with_owner(
     view
 }
 
+async fn api_user_record(
+    session: &Session,
+    db: &Database,
+) -> cot::Result<Result<User, cot::response::Response>> {
+    let Some(auth_user) = auth::get_session_user(session, db).await else {
+        return Ok(Err(json_error(
+            cot::http::StatusCode::UNAUTHORIZED,
+            "not authenticated",
+        )));
+    };
+    let Some(user) = User::get_by_id(db, auth_user.id)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to load user: {e}")))?
+    else {
+        return Ok(Err(json_error(
+            cot::http::StatusCode::UNAUTHORIZED,
+            "not authenticated",
+        )));
+    };
+    Ok(Ok(user))
+}
+
+fn telegram_status_response(config: &AppConfig, user: &User) -> TelegramLinkStatusResponse {
+    let bot_username = normalized_telegram_bot_username(&config.telegram_bot_username);
+    let telegram_id = user.telegram_id().map(str::to_owned);
+    let linked = telegram_id
+        .as_deref()
+        .is_some_and(|value| !value.is_empty());
+    let declined = telegram_id.as_deref() == Some("");
+    let pending = user.telegram_link_code().is_some()
+        && telegram::link_code_is_active(user.telegram_link_code_created_at());
+    let pending_secret = pending
+        .then(|| user.telegram_link_code().map(str::to_owned))
+        .flatten();
+    let pending_expires_at = pending
+        .then(|| {
+            user.telegram_link_code_created_at()
+                .map(telegram::link_code_expires_at)
+        })
+        .flatten();
+
+    TelegramLinkStatusResponse {
+        enabled: config.telegram_bot_enabled,
+        bot_url: telegram_bot_url(&bot_username),
+        bot_username,
+        linked,
+        declined,
+        pending,
+        pending_secret,
+        pending_expires_at,
+        telegram_id: linked.then_some(telegram_id).flatten(),
+    }
+}
+
+fn normalized_telegram_bot_username(username: &str) -> String {
+    username.trim().trim_start_matches('@').trim().to_owned()
+}
+
+fn telegram_bot_url(username: &str) -> String {
+    if username.is_empty() {
+        String::new()
+    } else {
+        format!("https://t.me/{username}")
+    }
+}
+
+async fn create_unique_telegram_link_code(db: &Database) -> cot::Result<String> {
+    for _ in 0..8 {
+        let code = telegram::generate_link_code().map_err(cot::Error::internal)?;
+        let existing = User::get_by_telegram_link_code(db, &code)
+            .await
+            .map_err(|e| {
+                cot::Error::internal(format!("failed to check Telegram link code: {e}"))
+            })?;
+        if existing.is_none() {
+            return Ok(code);
+        }
+    }
+    Err(cot::Error::internal(
+        "failed to generate unique Telegram link code",
+    ))
+}
+
+async fn link_telegram_id(
+    db: &Database,
+    user: &mut User,
+    telegram_id: &str,
+) -> cot::Result<Option<cot::response::Response>> {
+    if let Some(existing) = User::get_by_telegram_id(db, telegram_id)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to check Telegram ID: {e}")))?
+    {
+        if existing.id_val() != user.id_val() {
+            return Ok(Some(json_error_typed(
+                cot::http::StatusCode::CONFLICT,
+                "telegram_id_taken",
+                "Telegram ID is already linked",
+                "This Telegram ID is already connected to another account.",
+                "",
+            )));
+        }
+    }
+
+    user.complete_telegram_link(db, telegram_id)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to save Telegram ID: {e}")))?;
+    Ok(None)
+}
+
+async fn sync_after_client_mutation(
+    db: &Database,
+    config: &AppConfig,
+) -> (vpn::SecretSyncResult, Option<ApiNotice>) {
+    match vpn::sync_from_database(db, config).await {
+        Ok(sync) => (sync, None),
+        Err(e) => {
+            tracing::warn!(error = %e, "client data changed but Secret sync failed");
+            (
+                vpn::SecretSyncResult {
+                    changed: false,
+                    message: "client data saved; Secret sync failed".to_owned(),
+                },
+                Some(ApiNotice {
+                    kind: "warning".to_owned(),
+                    code: "secret_sync_failed".to_owned(),
+                    title: "Saved locally".to_owned(),
+                    message: "The key list was updated, but VPN servers did not receive the new config yet.".to_owned(),
+                    detail: e,
+                }),
+            )
+        }
+    }
+}
+
 fn render_qr_svg(value: &str) -> cot::Result<String> {
     let code = QrCode::new(value.as_bytes())
         .map_err(|e| cot::Error::internal(format!("failed to render QR code: {e}")))?;
@@ -411,9 +912,18 @@ async fn sync_vpn_clients_handler(
     );
 
     let (config, _) = AppConfig::load_with_db(&db).await;
-    let sync = vpn::sync_from_database(&db, &config)
-        .await
-        .map_err(|e| cot::Error::internal(format!("failed to sync client Secret: {e}")))?;
+    let sync = match vpn::sync_from_database(&db, &config).await {
+        Ok(sync) => sync,
+        Err(e) => {
+            return Ok(json_error_typed(
+                cot::http::StatusCode::SERVICE_UNAVAILABLE,
+                "secret_sync_failed",
+                "Secret sync failed",
+                "Could not apply client config to VPN servers.",
+                &e,
+            ));
+        }
+    };
 
     Json(sync).into_response()
 }
@@ -442,6 +952,36 @@ impl App for ApiApp {
                 api_get(vpn_status_handler),
                 "api_vpn_status",
             ),
+            Route::with_api_handler_and_name(
+                "/telegram-link/status",
+                api_get(telegram_link_status_handler),
+                "api_telegram_link_status",
+            ),
+            Route::with_api_handler_and_name(
+                "/telegram-link/webapp",
+                api_post(telegram_link_webapp_handler),
+                "api_telegram_link_webapp",
+            ),
+            Route::with_api_handler_and_name(
+                "/telegram-login/webapp",
+                api_post(telegram_login_webapp_handler),
+                "api_telegram_login_webapp",
+            ),
+            Route::with_api_handler_and_name(
+                "/telegram-link/start",
+                api_post(telegram_link_start_handler),
+                "api_telegram_link_start",
+            ),
+            Route::with_api_handler_and_name(
+                "/telegram-link/decline",
+                api_post(telegram_link_decline_handler),
+                "api_telegram_link_decline",
+            ),
+            Route::with_api_handler_and_name(
+                "/telegram-link/unlink",
+                api_post(telegram_link_unlink_handler),
+                "api_telegram_link_unlink",
+            ),
             Route::with_api_handler_and_name(
                 "/vpn-clients/sync",
                 api_post(sync_vpn_clients_handler),
@@ -452,6 +992,11 @@ impl App for ApiApp {
                 api_post(set_vpn_client_enabled_handler),
                 "api_vpn_client_enabled",
             ),
+            Route::with_api_handler_and_name(
+                "/vpn-clients/{id}/group",
+                api_post(set_vpn_client_group_handler),
+                "api_vpn_client_group",
+            ),
             Route::with_api_handler_and_name(
                 "/vpn-clients/{id}",
                 api_delete(delete_vpn_client_handler),

src/config.rs

@@ -47,6 +47,15 @@ impl ConfigEntry {
     pub fn new(key: String, value: String) -> Self {
         Self { key, value }
     }
+
+    pub fn key_str(&self) -> &str {
+        &self.key
+    }
+
+    pub async fn get_by_key(db: &Database, key: &str) -> cot::db::Result<Option<Self>> {
+        let key = key.to_owned();
+        cot::db::query!(ConfigEntry, $key == key).get(db).await
+    }
 }
 
 // ---------------------------------------------------------------------------
@@ -87,6 +96,7 @@ pub mod db_migrations {
 
 pub struct ConfigSources {
     pub database_url: ConfigSource,
+    pub migrate_sqlite: ConfigSource,
     pub oidc_issuer: ConfigSource,
     pub oidc_client_id: ConfigSource,
     pub oidc_client_secret: ConfigSource,
@@ -107,12 +117,16 @@ pub struct ConfigSources {
     pub vpn_dns: ConfigSource,
     pub vpn_mtu: ConfigSource,
     pub swagger_enabled: ConfigSource,
+    pub telegram_bot_enabled: ConfigSource,
+    pub telegram_bot_username: ConfigSource,
+    pub telegram_bot_token: ConfigSource,
 }
 
 impl Default for ConfigSources {
     fn default() -> Self {
         Self {
             database_url: ConfigSource::Default,
+            migrate_sqlite: ConfigSource::Default,
             oidc_issuer: ConfigSource::Default,
             oidc_client_id: ConfigSource::Default,
             oidc_client_secret: ConfigSource::Default,
@@ -133,6 +147,9 @@ impl Default for ConfigSources {
             vpn_dns: ConfigSource::Default,
             vpn_mtu: ConfigSource::Default,
             swagger_enabled: ConfigSource::Default,
+            telegram_bot_enabled: ConfigSource::Default,
+            telegram_bot_username: ConfigSource::Default,
+            telegram_bot_token: ConfigSource::Default,
         }
     }
 }
@@ -188,8 +205,10 @@ macro_rules! impl_env_overrides {
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct AppConfig {
-    /// SQLite connection URL.
+    /// SQLite or PostgreSQL connection URL.
     pub database_url: String,
+    /// Optional SQLite database path/URL copied into PostgreSQL on startup.
+    pub migrate_sqlite: String,
     /// OIDC issuer URL.
     pub oidc_issuer: String,
     /// OIDC client ID.
@@ -230,12 +249,19 @@ pub struct AppConfig {
     pub vpn_mtu: u16,
     /// Whether the Swagger UI is served at /swagger/.
     pub swagger_enabled: bool,
+    /// Whether Telegram bot/Web App integration is enabled.
+    pub telegram_bot_enabled: bool,
+    /// Public bot username, without or with the leading @.
+    pub telegram_bot_username: String,
+    /// Bot token used to verify Telegram Web App initData.
+    pub telegram_bot_token: String,
 }
 
 impl Default for AppConfig {
     fn default() -> Self {
         Self {
             database_url: "sqlite://amnezia-fellow.sqlite3?mode=rwc".into(),
+            migrate_sqlite: String::new(),
             oidc_issuer: String::new(),
             oidc_client_id: String::new(),
             oidc_client_secret: String::new(),
@@ -256,12 +282,16 @@ impl Default for AppConfig {
             vpn_dns: "1.1.1.1, 8.8.8.8".into(),
             vpn_mtu: 1376,
             swagger_enabled: false,
+            telegram_bot_enabled: false,
+            telegram_bot_username: String::new(),
+            telegram_bot_token: String::new(),
         }
     }
 }
 
 impl_env_overrides!(
     database_url,
+    migrate_sqlite,
     oidc_issuer,
     oidc_client_id,
     oidc_client_secret,
@@ -282,6 +312,9 @@ impl_env_overrides!(
     vpn_dns,
     vpn_mtu,
     swagger_enabled,
+    telegram_bot_enabled,
+    telegram_bot_username,
+    telegram_bot_token,
 );
 
 impl AppConfig {
@@ -337,6 +370,7 @@ impl AppConfig {
         }
 
         apply_db_field!(database_url);
+        apply_db_field!(migrate_sqlite);
         apply_db_field!(oidc_issuer);
         apply_db_field!(oidc_client_id);
         apply_db_field!(oidc_client_secret);
@@ -357,6 +391,9 @@ impl AppConfig {
         apply_db_field!(vpn_dns);
         apply_db_field!(vpn_mtu);
         apply_db_field!(swagger_enabled);
+        apply_db_field!(telegram_bot_enabled);
+        apply_db_field!(telegram_bot_username);
+        apply_db_field!(telegram_bot_token);
     }
 }
 

src/i18n/phrases.rs

@@ -42,6 +42,9 @@ translations! {
     login_submit:             "Sign in"                     , "Войти";
     login_disabled:           "Login is currently disabled." , "Вход сейчас отключён.";
     login_invalid:            "Invalid username or password." , "Неверное имя пользователя или пароль.";
+    login_telegram_wait:      "Signing in with Telegram..." , "Входим через Telegram...";
+    login_telegram_fallback:  "Open the regular login page" , "Открыть обычный вход";
+    login_telegram_failed:    "Telegram login failed. Use regular login." , "Не удалось войти через Telegram. Используйте обычный вход.";
 
     // Logout
     nav_logout:               "Logout"                      , "Выход";
@@ -61,6 +64,11 @@ translations! {
     // Kubernetes / VPN settings
     settings_kubernetes:     "Kubernetes"                    , "Kubernetes";
     settings_vpn:            "VPN"                           , "VPN";
+    settings_telegram:       "Telegram"                      , "Telegram";
+    settings_telegram_enabled: "Telegram bot enabled"         , "Telegram-бот включён";
+    settings_telegram_username: "Bot username"                , "Username бота";
+    settings_telegram_token:  "Bot token"                     , "Токен бота";
+    settings_telegram_setup_instructions: "Bot setup guide"   , "Инструкция настройки бота";
 
     // User management
     nav_users:                "Users"                       , "Пользователи";
@@ -88,22 +96,33 @@ translations! {
     configs_create:           "Create"                      , "Создать";
     configs_sync:             "Sync Secret"                 , "Синхронизировать Secret";
     configs_rollout_heading:  "Apply status"                , "Статус применения";
+    configs_server_status:    "Server status"               , "Статус серверов";
     configs_refresh:          "Refresh"                     , "Обновить";
     configs_config_updated:   "Config updated"              , "Конфиг обновлён";
     configs_loading_status:   "Loading status..."           , "Загрузка статуса...";
     configs_no_pods:          "No AmneziaWG pods."          , "Нет подов AmneziaWG.";
     configs_server:           "Server"                      , "Сервер";
+    configs_endpoint:         "Endpoint"                    , "Endpoint";
+    configs_message:          "Message"                     , "Сообщение";
     configs_pod:              "Pod"                         , "Pod";
+    configs_node:             "Node"                        , "Нода";
     configs_rollout:          "Rollout"                     , "Применение";
     configs_ready:            "Ready"                       , "Готов";
     configs_not_ready:        "Not ready"                   , "Не готов";
     configs_phase:            "Phase"                       , "Фаза";
     configs_uptime:           "Uptime"                      , "Аптайм";
     configs_restarts:         "Restarts"                    , "Рестарты";
+    configs_config_applied:   "Config applied"              , "Конфиг применён";
+    configs_reload_status:    "Reload status"               , "Статус reload";
+    configs_config_hash:      "Config hash"                 , "Хэш конфига";
     configs_status_applied:   "applied"                     , "применён";
     configs_status_starting:  "starting"                    , "стартует";
-    configs_status_pending_restart: "pending restart"       , "ждёт рестарт";
+    configs_status_pending_apply: "pending apply"           , "ждёт применения";
+    configs_status_error:     "reload error"                , "ошибка reload";
     configs_status_unknown:   "unknown"                     , "неизвестно";
+    configs_status_online:    "online"                      , "онлайн";
+    configs_status_offline:   "offline"                     , "оффлайн";
+    configs_status_unavailable: "status unavailable"        , "статус недоступен";
     configs_never:            "n/a"                         , "н/д";
     configs_servers:          "Servers"                     , "Серверы";
     configs_loading_servers:  "Loading servers..."          , "Загрузка серверов...";
@@ -118,6 +137,67 @@ translations! {
     configs_no:               "no"                          , "нет";
     configs_empty:            "No configs yet."             , "Конфигов пока нет.";
     configs_name_placeholder: "Client name"                 , "Имя клиента";
+    configs_portal_kicker:    "Client portal"               , "Клиентский портал";
+    configs_portal_heading:   "My VPN keys"                 , "Мои VPN-ключи";
+    configs_key_status:       "Key status"                  , "Статус ключей";
+    configs_active_keys:      "Active"                      , "Активные";
+    configs_total_keys:       "Total"                       , "Всего";
+    configs_new_key:          "New key"                     , "Новый ключ";
+    configs_group:            "Group"                       , "Группа";
+    configs_group_isolated:   "Isolated"                    , "Изолирован";
+    configs_group_placeholder: "Leave empty for isolation"  , "Оставьте пустым для изоляции";
+    configs_group_hint:       "Clients with the same group name can connect to each other on the same VPN server." , "Клиенты с одинаковой группой могут обращаться друг к другу на одном VPN-сервере.";
+    configs_change_group:     "Change group"                , "Сменить группу";
+    configs_group_changed:    "Group changed. The existing client config remains valid." , "Группа изменена. Текущий конфиг клиента остаётся действительным.";
+    configs_empty_title:      "Create your first key"       , "Создайте первый ключ";
+    configs_empty_hint:       "It will appear here after creation." , "После создания он появится здесь.";
+    configs_enabled_state:    "active"                      , "активен";
+    configs_disabled_state:   "disabled"                    , "отключён";
+    configs_copy_link:        "Copy"                        , "Копировать";
+    configs_qr_code:          "QR code"                     , "QR-код";
+    configs_choose_server:    "Choose server"               , "Выбрать сервер";
+    configs_updated:          "Updated"                     , "Обновлён";
+    configs_key_ready:        "Ready"                       , "Готов";
+    notice_success_title:     "Done"                        , "Готово";
+    notice_warning_title:     "Needs attention"             , "Нужно внимание";
+    notice_error_title:       "Something went wrong"        , "Что-то сломалось";
+    notice_sync_warning_title: "Saved, but not applied"     , "Сохранено, но не применено";
+    notice_sync_warning_message: "The key list changed, but VPN servers did not receive the new config yet." , "Список ключей изменён, но VPN-серверы пока не получили новый конфиг.";
+    notice_create_success:    "Key created."                , "Ключ создан.";
+    notice_update_success:    "Key updated."                , "Ключ обновлён.";
+    notice_delete_success:    "Key deleted."                , "Ключ удалён.";
+    notice_server_list_error_title: "Server list unavailable" , "Список серверов недоступен";
+    notice_server_list_error_message: "Could not load VPN servers." , "Не удалось загрузить VPN-серверы.";
+    notice_detail:           "Detail"                      , "Детали";
+    telegram_link_title:      "Connect Telegram"             , "Подключить Telegram";
+    telegram_webapp_message:  "Save this Telegram account for VPN notifications and bot control." , "Сохранить этот Telegram-аккаунт для уведомлений и управления через бота.";
+    telegram_manual_message:  "Connect Telegram by sending a one-time secret code to the bot." , "Подключите Telegram, отправив одноразовый секретный код боту.";
+    telegram_connect:         "Connect"                     , "Подключить";
+    telegram_skip:            "Do not ask again"            , "Больше не предлагать";
+    telegram_guide_title:     "Send this code to the bot"   , "Отправьте этот код боту";
+    telegram_open_bot:        "Open bot"                    , "Открыть бота";
+    telegram_guide_start:     "Open the bot and send /start once if you have not done it before." , "Откройте бота и один раз отправьте /start, если ещё не делали этого.";
+    telegram_guide_get_id:    "Send the secret code below to the bot." , "Отправьте боту секретный код ниже.";
+    telegram_guide_paste:     "Return here; the status updates automatically." , "Вернитесь сюда; статус обновится автоматически.";
+    telegram_secret_label:    "Secret code"                 , "Секретный код";
+    telegram_save:            "Save Telegram"               , "Сохранить Telegram";
+    telegram_saved:           "Telegram connected."         , "Telegram подключён.";
+    telegram_declined:        "Telegram prompt disabled."   , "Предложение Telegram отключено.";
+    telegram_bot_unconfigured: "bot is not configured"      , "бот не настроен";
+    telegram_status_connected: "Telegram connected"         , "Telegram подключён";
+    telegram_status_pending:  "Telegram code is waiting"    , "Код Telegram ожидает";
+    telegram_status_empty:    "Telegram is not connected"   , "Telegram не подключён";
+    telegram_status_disabled: "Telegram is disabled"        , "Telegram отключён";
+    telegram_change:          "Change"                      , "Сменить";
+    telegram_delete:          "Remove"                      , "Удалить";
+    telegram_delete_confirm:  "Remove Telegram from this account?" , "Удалить Telegram из этого аккаунта?";
+    telegram_unlinked:        "Telegram removed."           , "Telegram удалён.";
+    telegram_copy_secret:     "Copy code"                   , "Копировать код";
+    telegram_secret_copied:   "Secret code copied."         , "Секретный код скопирован.";
+    telegram_refresh_status:  "Check status"                , "Проверить статус";
+    telegram_pending_message: "Waiting for a message with the secret code." , "Жду сообщение с секретным кодом.";
+    telegram_connected_message: "This account is ready for Telegram bot actions." , "Этот аккаунт готов к действиям через Telegram-бота.";
+    telegram_not_connected_message: "Telegram is not connected yet." , "Telegram пока не подключён.";
 
     // VPN server management
     servers_empty:            "No registered servers."      , "Нет зарегистрированных серверов.";

src/main.rs

@@ -4,11 +4,14 @@ mod auth;
 mod config;
 mod i18n;
 mod oidc;
+mod sqlite_migration;
+mod telegram;
 mod user;
 mod vpn;
 
 use std::sync::Arc;
 
+use async_trait::async_trait;
 use cot::auth::PasswordVerificationResult;
 use cot::cli::CliMetadata;
 use cot::common_types::Password;
@@ -20,7 +23,7 @@ use cot::db::Database;
 use cot::form::{Form, FormResult};
 use cot::html::Html;
 use cot::middleware::SessionMiddleware;
-use cot::project::RegisterAppsContext;
+use cot::project::{ProjectContext, RegisterAppsContext};
 use cot::request::extractors::{RequestForm, UrlQuery};
 use cot::response::IntoResponse;
 use cot::router::method::get;
@@ -55,21 +58,56 @@ struct ConfigsTemplate {
     app_version: &'static str,
 }
 
+#[derive(Debug, Template)]
+#[template(path = "client_portal.html")]
+struct ClientPortalTemplate {
+    t: &'static Translations,
+    user_name: String,
+    user_role: String,
+    app_version: &'static str,
+}
+
+#[derive(Debug, Template)]
+#[template(path = "telegram_login.html")]
+struct TelegramLoginTemplate {
+    t: &'static Translations,
+}
+
 async fn configs_page(
     session: Session,
     db: Database,
     i18n: I18n,
 ) -> cot::Result<cot::response::Response> {
-    let user = match auth::require_user_or_redirect(&session, &db).await {
-        Ok(user) => user,
-        Err(response) => return Ok(response),
+    let user = match auth::get_session_user(&session, &db).await {
+        Some(user) => user,
+        None => {
+            return Html::new(TelegramLoginTemplate { t: i18n.t }.render()?).into_response();
+        }
     };
+
+    let is_admin = user.role == auth::Role::Admin;
+    let user_name = user.name;
+    let user_role = user.role.code().to_owned();
+
+    if is_admin {
+        return Html::new(
+            ConfigsTemplate {
+                t: i18n.t,
+                user_name,
+                user_role,
+                is_admin,
+                app_version: env!("CARGO_PKG_VERSION"),
+            }
+            .render()?,
+        )
+        .into_response();
+    }
+
     Html::new(
-        ConfigsTemplate {
+        ClientPortalTemplate {
             t: i18n.t,
-            user_name: user.name,
-            user_role: user.role.code().to_owned(),
-            is_admin: user.role == auth::Role::Admin,
+            user_name,
+            user_role,
             app_version: env!("CARGO_PKG_VERSION"),
         }
         .render()?,
@@ -153,11 +191,19 @@ struct AmneziaFellowApp {
     config: Arc<AppConfig>,
 }
 
+#[async_trait]
 impl App for AmneziaFellowApp {
     fn name(&self) -> &'static str {
         env!("CARGO_PKG_NAME")
     }
 
+    async fn init(&self, context: &mut ProjectContext) -> cot::Result<()> {
+        if let Some(db) = context.try_database() {
+            sqlite_migration::run_if_requested(&self.config, db).await?;
+        }
+        Ok(())
+    }
+
     fn router(&self) -> Router {
         Router::with_urls([
             Route::with_handler_and_name(
@@ -268,8 +314,11 @@ impl Project for AmneziaFellowProject {
                 "  Priority: env var > DB override > compiled default.\n",
                 "\n",
                 "  Database (required for most features):\n",
-                "    AMNEZIA_FELLOW_DATABASE_URL    SQLite connection URL\n",
+                "    AMNEZIA_FELLOW_DATABASE_URL    SQLite or PostgreSQL connection URL\n",
                 "                                   Example: sqlite:///data/amnezia-fellow.sqlite3?mode=rwc\n",
+                "                                   Example: postgresql://user:pass@postgres:5432/amnezia_fellow\n",
+                "    AMNEZIA_FELLOW_MIGRATE_SQLITE SQLite path/URL to import into PostgreSQL once\n",
+                "                                   Example: /data/amnezia-fellow.sqlite3\n",
                 "\n",
                 "  Server:\n",
                 "    AMNEZIA_FELLOW_LOG_LEVEL       Tracing filter (default: info)\n",
@@ -292,6 +341,11 @@ impl Project for AmneziaFellowProject {
                 "  API:\n",
                 "    AMNEZIA_FELLOW_SWAGGER_ENABLED   Enable Swagger UI at /swagger/ (default: false)\n",
                 "\n",
+                "  Telegram:\n",
+                "    AMNEZIA_FELLOW_TELEGRAM_BOT_ENABLED   Enable Telegram bot/Web App integration (default: false)\n",
+                "    AMNEZIA_FELLOW_TELEGRAM_BOT_USERNAME  Telegram bot username, with or without @\n",
+                "    AMNEZIA_FELLOW_TELEGRAM_BOT_TOKEN     Telegram bot token for Web App initData verification\n",
+                "\n",
                 "QUICK START\n",
                 "  export AMNEZIA_FELLOW_DATABASE_URL=sqlite://amnezia-fellow.sqlite3?mode=rwc\n",
                 "  amnezia-fellow --listen 127.0.0.1:8000",
@@ -379,6 +433,7 @@ fn main() -> impl Project {
     tracing_subscriber::fmt().with_env_filter(filter).init();
 
     tracing::info!("loaded config: {:?}", app_config);
+    telegram::spawn_bot_worker(Arc::clone(&app_config));
 
     AmneziaFellowProject { app_config }
 }

src/sqlite_migration.rs

@@ -0,0 +1,186 @@
+use std::path::Path;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use cot::db::migrations::{self, MigrationEngine, SyncDynMigration};
+use cot::db::{Database, Model};
+use cot::session::db::Session as CotSession;
+
+use crate::config::{AppConfig, ConfigEntry};
+use crate::user::{OidcLink, User};
+use crate::vpn::VpnClient;
+
+const MARKER_KEY: &str = "sqlite_migration_completed_at";
+const SOURCE_KEY: &str = "sqlite_migration_source";
+
+pub async fn run_if_requested(config: &AppConfig, target_db: &Database) -> cot::Result<()> {
+    let source = config.migrate_sqlite.trim();
+    if source.is_empty() {
+        return Ok(());
+    }
+
+    if !is_postgres_url(&config.database_url) {
+        tracing::warn!(
+            "AMNEZIA_FELLOW_MIGRATE_SQLITE is set but the active database is not PostgreSQL; skipping SQLite import"
+        );
+        return Ok(());
+    }
+
+    if ConfigEntry::get_by_key(target_db, MARKER_KEY)
+        .await
+        .map_err(internal)?
+        .is_some()
+    {
+        tracing::info!("SQLite import marker exists; skipping SQLite import");
+        return Ok(());
+    }
+
+    if target_has_app_data(target_db).await? {
+        return Err(cot::Error::internal(
+            "PostgreSQL target already contains amnezia-fellow data and has no SQLite import marker; refusing to merge automatically",
+        ));
+    }
+
+    let source_url = sqlite_source_url(source)?;
+    tracing::info!("Importing amnezia-fellow data from SQLite into PostgreSQL");
+
+    let source_db = Database::new(source_url)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to open SQLite source: {e}")))?;
+
+    run_app_migrations(&source_db).await?;
+    copy_app_data(&source_db, target_db).await?;
+    reset_postgres_sequences(target_db).await?;
+    write_marker(target_db, source).await?;
+
+    tracing::info!("SQLite import into PostgreSQL completed");
+    Ok(())
+}
+
+fn is_postgres_url(url: &str) -> bool {
+    url.starts_with("postgresql:")
+}
+
+fn sqlite_source_url(source: &str) -> cot::Result<String> {
+    if source.starts_with("sqlite:") {
+        return Ok(source.to_owned());
+    }
+
+    if !Path::new(source).exists() {
+        return Err(cot::Error::internal(format!(
+            "SQLite import source does not exist: {source}"
+        )));
+    }
+
+    let prefix = if Path::new(source).is_absolute() {
+        "sqlite://"
+    } else {
+        "sqlite:"
+    };
+    Ok(format!("{prefix}{source}?mode=rw"))
+}
+
+async fn run_app_migrations(db: &Database) -> cot::Result<()> {
+    let engine = MigrationEngine::new(app_migrations())
+        .map_err(|e| cot::Error::internal(format!("failed to build migration engine: {e}")))?;
+    engine
+        .run(db)
+        .await
+        .map_err(|e| cot::Error::internal(format!("failed to migrate SQLite source: {e}")))
+}
+
+fn app_migrations() -> Vec<Box<SyncDynMigration>> {
+    let mut all = migrations::wrap_migrations(cot::session::db::migrations::MIGRATIONS);
+    all.extend(migrations::wrap_migrations(
+        crate::config::db_migrations::MIGRATIONS,
+    ));
+    all.extend(migrations::wrap_migrations(
+        crate::user::db_migrations::MIGRATIONS,
+    ));
+    all.extend(migrations::wrap_migrations(
+        crate::vpn::db_migrations::MIGRATIONS,
+    ));
+    all
+}
+
+async fn target_has_app_data(db: &Database) -> cot::Result<bool> {
+    let config_entries = ConfigEntry::objects().count(db).await.map_err(internal)?;
+    let users = User::objects().count(db).await.map_err(internal)?;
+    let oidc_links = OidcLink::objects().count(db).await.map_err(internal)?;
+    let clients = VpnClient::objects().count(db).await.map_err(internal)?;
+    Ok(config_entries > 0 || users > 0 || oidc_links > 0 || clients > 0)
+}
+
+async fn copy_app_data(source_db: &Database, target_db: &Database) -> cot::Result<()> {
+    for mut entry in ConfigEntry::objects().all(source_db).await.map_err(internal)? {
+        if matches!(
+            entry.key_str(),
+            "database_url" | "migrate_sqlite" | MARKER_KEY | SOURCE_KEY
+        ) {
+            continue;
+        }
+        entry.save(target_db).await.map_err(internal)?;
+    }
+
+    for mut session in CotSession::objects()
+        .all(source_db)
+        .await
+        .map_err(internal)?
+    {
+        session.save(target_db).await.map_err(internal)?;
+    }
+
+    for mut user in User::list_all(source_db).await.map_err(internal)? {
+        user.save(target_db).await.map_err(internal)?;
+    }
+
+    for mut link in OidcLink::objects().all(source_db).await.map_err(internal)? {
+        link.save(target_db).await.map_err(internal)?;
+    }
+
+    for mut client in VpnClient::list_all(source_db).await.map_err(internal)? {
+        client.save(target_db).await.map_err(internal)?;
+    }
+
+    Ok(())
+}
+
+async fn reset_postgres_sequences(db: &Database) -> cot::Result<()> {
+    for table in [
+        "cot__session",
+        "amnezia_fellow__user",
+        "amnezia_fellow__oidc_link",
+        "amnezia_fellow__vpn_client",
+    ] {
+        let sql = format!(
+            "SELECT setval(pg_get_serial_sequence('{table}', 'id'), \
+             COALESCE((SELECT MAX(id) FROM {table}), 1), \
+             (SELECT COUNT(*) > 0 FROM {table}))"
+        );
+        db.raw(&sql).await.map_err(internal)?;
+    }
+    Ok(())
+}
+
+async fn write_marker(db: &Database, source: &str) -> cot::Result<()> {
+    let mut marker = ConfigEntry::new(MARKER_KEY.to_owned(), now_unix_seconds().to_string());
+    marker.save(db).await.map_err(internal)?;
+
+    let mut source_entry = ConfigEntry::new(SOURCE_KEY.to_owned(), source.to_owned());
+    source_entry.save(db).await.map_err(internal)?;
+
+    let mut migrate_entry = ConfigEntry::new("migrate_sqlite".to_owned(), String::new());
+    migrate_entry.save(db).await.map_err(internal)?;
+    Ok(())
+}
+
+fn now_unix_seconds() -> i64 {
+    let seconds = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map(|duration| duration.as_secs())
+        .unwrap_or_default();
+    i64::try_from(seconds).unwrap_or(i64::MAX)
+}
+
+fn internal(error: impl std::fmt::Display) -> cot::Error {
+    cot::Error::internal(error.to_string())
+}

src/telegram.rs

@@ -0,0 +1,578 @@
+use std::sync::Arc;
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
+
+use cot::db::Database;
+use hmac::{Hmac, Mac};
+use serde::{Deserialize, Serialize};
+use sha2::Sha256;
+use url::form_urlencoded;
+
+use crate::config::AppConfig;
+use crate::user::User;
+
+type HmacSha256 = Hmac<Sha256>;
+const BOT_POLL_TIMEOUT_SECONDS: u64 = 25;
+const BOT_IDLE_SLEEP: Duration = Duration::from_secs(15);
+const BOT_ERROR_SLEEP: Duration = Duration::from_secs(5);
+pub const TELEGRAM_LINK_CODE_TTL: Duration = Duration::from_secs(15 * 60);
+
+#[derive(Debug, Clone, Deserialize, PartialEq, Eq)]
+pub struct TelegramWebAppUser {
+    pub id: i64,
+    pub username: Option<String>,
+    pub first_name: Option<String>,
+    pub last_name: Option<String>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum TelegramAuthError {
+    MissingHash,
+    MissingAuthDate,
+    MissingUser,
+    InvalidHash,
+    InvalidSignature,
+    InvalidAuthDate,
+    Expired,
+    FromFuture,
+    InvalidUser,
+    EmptyBotToken,
+}
+
+impl std::fmt::Display for TelegramAuthError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let message = match self {
+            Self::MissingHash => "Telegram initData is missing hash",
+            Self::MissingAuthDate => "Telegram initData is missing auth_date",
+            Self::MissingUser => "Telegram initData is missing user",
+            Self::InvalidHash => "Telegram initData hash is invalid",
+            Self::InvalidSignature => "Telegram initData signature does not match bot token",
+            Self::InvalidAuthDate => "Telegram initData auth_date is invalid",
+            Self::Expired => "Telegram initData is too old",
+            Self::FromFuture => "Telegram initData auth_date is in the future",
+            Self::InvalidUser => "Telegram initData user payload is invalid",
+            Self::EmptyBotToken => "Telegram bot token is not configured",
+        };
+        f.write_str(message)
+    }
+}
+
+impl std::error::Error for TelegramAuthError {}
+
+#[derive(Debug, Deserialize)]
+struct TelegramApiResponse<T> {
+    ok: bool,
+    result: Option<T>,
+    description: Option<String>,
+    error_code: Option<i64>,
+}
+
+#[derive(Debug, Deserialize)]
+struct TelegramUpdate {
+    update_id: i64,
+    message: Option<TelegramMessage>,
+}
+
+#[derive(Debug, Deserialize)]
+struct TelegramMessage {
+    chat: TelegramChat,
+    from: Option<TelegramBotUser>,
+    text: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+struct TelegramChat {
+    id: i64,
+}
+
+#[derive(Debug, Deserialize)]
+struct TelegramBotUser {
+    id: i64,
+    is_bot: bool,
+}
+
+#[derive(Debug, Serialize)]
+struct GetUpdatesRequest {
+    offset: Option<i64>,
+    limit: u8,
+    timeout: u64,
+    allowed_updates: [&'static str; 1],
+}
+
+#[derive(Debug, Serialize)]
+struct DeleteWebhookRequest {
+    drop_pending_updates: bool,
+}
+
+#[derive(Debug, Serialize)]
+struct SendMessageRequest<'a> {
+    chat_id: i64,
+    text: &'a str,
+    disable_web_page_preview: bool,
+}
+
+pub fn spawn_bot_worker(config: Arc<AppConfig>) {
+    if config.database_url.trim().is_empty() {
+        tracing::warn!("Telegram bot worker disabled: database URL is empty");
+        return;
+    }
+
+    let database_url = config.database_url.clone();
+    tokio::spawn(async move {
+        run_bot_worker(database_url).await;
+    });
+}
+
+pub fn generate_link_code() -> Result<String, String> {
+    let mut bytes = [0_u8; 12];
+    getrandom::fill(&mut bytes)
+        .map_err(|e| format!("failed to generate Telegram link code: {e}"))?;
+    Ok(format!("af-{}", hex::encode(bytes)))
+}
+
+pub fn now_unix_seconds() -> i64 {
+    let seconds = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map(|duration| duration.as_secs())
+        .unwrap_or_default();
+    i64::try_from(seconds).unwrap_or(i64::MAX)
+}
+
+pub fn link_code_expires_at(created_at: i64) -> i64 {
+    let ttl = i64::try_from(TELEGRAM_LINK_CODE_TTL.as_secs()).unwrap_or(i64::MAX);
+    created_at.saturating_add(ttl)
+}
+
+pub fn link_code_is_active(created_at: Option<i64>) -> bool {
+    created_at
+        .map(|created_at| now_unix_seconds() <= link_code_expires_at(created_at))
+        .unwrap_or(false)
+}
+
+fn normalize_link_code(text: &str) -> Option<String> {
+    text.split_whitespace().find_map(|part| {
+        let candidate = part.trim_matches(|ch: char| !(ch.is_ascii_alphanumeric() || ch == '-'));
+        let candidate = candidate.to_ascii_lowercase();
+        let suffix = candidate.strip_prefix("af-")?;
+        (suffix.len() == 24 && suffix.bytes().all(|byte| byte.is_ascii_hexdigit()))
+            .then_some(candidate)
+    })
+}
+
+async fn run_bot_worker(database_url: String) {
+    let http = reqwest::Client::builder()
+        .timeout(Duration::from_secs(BOT_POLL_TIMEOUT_SECONDS + 10))
+        .build()
+        .expect("valid reqwest client");
+    let mut offset = None;
+    let mut active_token = String::new();
+    let mut webhook_deleted = false;
+
+    loop {
+        let db = match Database::new(database_url.clone()).await {
+            Ok(db) => db,
+            Err(e) => {
+                tracing::warn!(error = %e, "Telegram bot worker could not open database");
+                tokio::time::sleep(BOT_ERROR_SLEEP).await;
+                continue;
+            }
+        };
+
+        loop {
+            let (config, _) = AppConfig::load_with_db(&db).await;
+            let token = config.telegram_bot_token.trim().to_owned();
+            if !config.telegram_bot_enabled || token.is_empty() {
+                offset = None;
+                active_token.clear();
+                webhook_deleted = false;
+                tokio::time::sleep(BOT_IDLE_SLEEP).await;
+                continue;
+            }
+
+            if active_token != token {
+                active_token = token.clone();
+                offset = None;
+                webhook_deleted = false;
+            }
+
+            if !webhook_deleted {
+                match delete_webhook(&http, &token).await {
+                    Ok(()) => webhook_deleted = true,
+                    Err(e) => {
+                        tracing::warn!(error = %e, "Telegram bot worker could not delete webhook");
+                        tokio::time::sleep(BOT_ERROR_SLEEP).await;
+                        continue;
+                    }
+                }
+            }
+
+            match get_updates(&http, &token, offset).await {
+                Ok(updates) => {
+                    for update in updates {
+                        offset = Some(update.update_id.saturating_add(1));
+                        if let Err(e) = process_update(&db, &http, &token, update).await {
+                            tracing::warn!(error = %e, "Telegram bot update was not processed");
+                        }
+                    }
+                }
+                Err(e) => {
+                    tracing::warn!(error = %e, "Telegram bot polling failed");
+                    tokio::time::sleep(BOT_ERROR_SLEEP).await;
+                }
+            }
+        }
+    }
+}
+
+async fn delete_webhook(http: &reqwest::Client, token: &str) -> Result<(), String> {
+    let url = telegram_api_url(token, "deleteWebhook");
+    let response = http
+        .post(url)
+        .json(&DeleteWebhookRequest {
+            drop_pending_updates: false,
+        })
+        .send()
+        .await
+        .map_err(reqwest_error_message)?
+        .json::<TelegramApiResponse<bool>>()
+        .await
+        .map_err(reqwest_error_message)?;
+    telegram_api_result(response).map(|_| ())
+}
+
+async fn get_updates(
+    http: &reqwest::Client,
+    token: &str,
+    offset: Option<i64>,
+) -> Result<Vec<TelegramUpdate>, String> {
+    let url = telegram_api_url(token, "getUpdates");
+    let response = http
+        .post(url)
+        .json(&GetUpdatesRequest {
+            offset,
+            limit: 50,
+            timeout: BOT_POLL_TIMEOUT_SECONDS,
+            allowed_updates: ["message"],
+        })
+        .send()
+        .await
+        .map_err(reqwest_error_message)?
+        .json::<TelegramApiResponse<Vec<TelegramUpdate>>>()
+        .await
+        .map_err(reqwest_error_message)?;
+    telegram_api_result(response)
+}
+
+async fn send_message(
+    http: &reqwest::Client,
+    token: &str,
+    chat_id: i64,
+    text: &str,
+) -> Result<(), String> {
+    let url = telegram_api_url(token, "sendMessage");
+    let response = http
+        .post(url)
+        .json(&SendMessageRequest {
+            chat_id,
+            text,
+            disable_web_page_preview: true,
+        })
+        .send()
+        .await
+        .map_err(reqwest_error_message)?
+        .json::<TelegramApiResponse<serde_json::Value>>()
+        .await
+        .map_err(reqwest_error_message)?;
+    telegram_api_result(response).map(|_| ())
+}
+
+async fn process_update(
+    db: &Database,
+    http: &reqwest::Client,
+    token: &str,
+    update: TelegramUpdate,
+) -> Result<(), String> {
+    let Some(message) = update.message else {
+        return Ok(());
+    };
+    let Some(from) = message.from else {
+        return Ok(());
+    };
+    if from.is_bot {
+        return Ok(());
+    }
+
+    let Some(text) = message.text.as_deref() else {
+        return Ok(());
+    };
+    if text.trim().starts_with("/start") {
+        send_message(
+            http,
+            token,
+            message.chat.id,
+            "Open the VPN portal, press the Telegram button and send me the secret code shown there.",
+        )
+        .await?;
+        return Ok(());
+    }
+
+    let Some(code) = normalize_link_code(text) else {
+        send_message(
+            http,
+            token,
+            message.chat.id,
+            "I need the secret code from the VPN portal to connect your Telegram account.",
+        )
+        .await?;
+        return Ok(());
+    };
+
+    let Some(mut user) = User::get_by_telegram_link_code(db, &code)
+        .await
+        .map_err(|e| format!("failed to load Telegram link code: {e}"))?
+    else {
+        send_message(
+            http,
+            token,
+            message.chat.id,
+            "This code is unknown or already used. Generate a new code in the VPN portal.",
+        )
+        .await?;
+        return Ok(());
+    };
+
+    if !link_code_is_active(user.telegram_link_code_created_at()) {
+        user.set_telegram_link_code(db, None, None)
+            .await
+            .map_err(|e| format!("failed to clear expired Telegram link code: {e}"))?;
+        send_message(
+            http,
+            token,
+            message.chat.id,
+            "This code has expired. Generate a new code in the VPN portal.",
+        )
+        .await?;
+        return Ok(());
+    }
+
+    let telegram_id = from.id.to_string();
+    if let Some(existing) = User::get_by_telegram_id(db, &telegram_id)
+        .await
+        .map_err(|e| format!("failed to check Telegram ID: {e}"))?
+    {
+        if existing.id_val() != user.id_val() {
+            send_message(
+                http,
+                token,
+                message.chat.id,
+                "This Telegram account is already connected to another VPN account.",
+            )
+            .await?;
+            return Ok(());
+        }
+    }
+
+    user.complete_telegram_link(db, &telegram_id)
+        .await
+        .map_err(|e| format!("failed to save Telegram ID: {e}"))?;
+    send_message(
+        http,
+        token,
+        message.chat.id,
+        "Telegram connected. You can return to the VPN portal.",
+    )
+    .await?;
+    Ok(())
+}
+
+fn telegram_api_url(token: &str, method: &str) -> String {
+    format!("https://api.telegram.org/bot{token}/{method}")
+}
+
+fn telegram_api_result<T>(response: TelegramApiResponse<T>) -> Result<T, String> {
+    if response.ok {
+        response
+            .result
+            .ok_or_else(|| "Telegram API response did not include result".to_owned())
+    } else {
+        Err(match (response.error_code, response.description) {
+            (Some(code), Some(description)) => format!("Telegram API {code}: {description}"),
+            (_, Some(description)) => description,
+            (Some(code), None) => format!("Telegram API error {code}"),
+            (None, None) => "Telegram API error".to_owned(),
+        })
+    }
+}
+
+fn reqwest_error_message(error: reqwest::Error) -> String {
+    if error.is_timeout() {
+        "request timed out".to_owned()
+    } else if error.is_connect() {
+        "connection failed".to_owned()
+    } else if let Some(status) = error.status() {
+        format!("HTTP {status}")
+    } else {
+        "request failed".to_owned()
+    }
+}
+
+pub fn validate_web_app_init_data(
+    init_data: &str,
+    bot_token: &str,
+    max_age: Duration,
+) -> Result<TelegramWebAppUser, TelegramAuthError> {
+    let now = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map_err(|_| TelegramAuthError::InvalidAuthDate)?
+        .as_secs();
+    validate_web_app_init_data_at(init_data, bot_token, max_age, now)
+}
+
+fn validate_web_app_init_data_at(
+    init_data: &str,
+    bot_token: &str,
+    max_age: Duration,
+    now: u64,
+) -> Result<TelegramWebAppUser, TelegramAuthError> {
+    if bot_token.trim().is_empty() {
+        return Err(TelegramAuthError::EmptyBotToken);
+    }
+
+    let mut params = form_urlencoded::parse(init_data.as_bytes())
+        .into_owned()
+        .collect::<Vec<_>>();
+    let hash = params
+        .iter()
+        .find_map(|(key, value)| (key == "hash").then_some(value.as_str()))
+        .ok_or(TelegramAuthError::MissingHash)?;
+    let expected_hash = hex::decode(hash).map_err(|_| TelegramAuthError::InvalidHash)?;
+
+    params.retain(|(key, _)| key != "hash");
+    params.sort_by(|left, right| left.0.cmp(&right.0));
+    let data_check_string = params
+        .iter()
+        .map(|(key, value)| format!("{key}={value}"))
+        .collect::<Vec<_>>()
+        .join("\n");
+
+    verify_signature(bot_token, &data_check_string, &expected_hash)?;
+
+    let auth_date = params
+        .iter()
+        .find_map(|(key, value)| (key == "auth_date").then_some(value.as_str()))
+        .ok_or(TelegramAuthError::MissingAuthDate)?
+        .parse::<u64>()
+        .map_err(|_| TelegramAuthError::InvalidAuthDate)?;
+    if auth_date > now.saturating_add(300) {
+        return Err(TelegramAuthError::FromFuture);
+    }
+    if now.saturating_sub(auth_date) > max_age.as_secs() {
+        return Err(TelegramAuthError::Expired);
+    }
+
+    let user_json = params
+        .iter()
+        .find_map(|(key, value)| (key == "user").then_some(value.as_str()))
+        .ok_or(TelegramAuthError::MissingUser)?;
+    serde_json::from_str(user_json).map_err(|_| TelegramAuthError::InvalidUser)
+}
+
+fn verify_signature(
+    bot_token: &str,
+    data_check_string: &str,
+    expected_hash: &[u8],
+) -> Result<(), TelegramAuthError> {
+    let mut secret_mac =
+        HmacSha256::new_from_slice(b"WebAppData").expect("HMAC accepts any key length");
+    secret_mac.update(bot_token.as_bytes());
+    let secret_key = secret_mac.finalize().into_bytes();
+
+    let mut data_mac =
+        HmacSha256::new_from_slice(&secret_key).expect("HMAC accepts any key length");
+    data_mac.update(data_check_string.as_bytes());
+    data_mac
+        .verify_slice(expected_hash)
+        .map_err(|_| TelegramAuthError::InvalidSignature)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn signed_init_data(bot_token: &str, auth_date: u64, user_json: &str) -> String {
+        let data_check_string =
+            format!("auth_date={auth_date}\nquery_id=AAEAAAE\nuser={user_json}");
+
+        let mut secret_mac =
+            HmacSha256::new_from_slice(b"WebAppData").expect("HMAC accepts any key length");
+        secret_mac.update(bot_token.as_bytes());
+        let secret_key = secret_mac.finalize().into_bytes();
+
+        let mut data_mac =
+            HmacSha256::new_from_slice(&secret_key).expect("HMAC accepts any key length");
+        data_mac.update(data_check_string.as_bytes());
+        let hash = hex::encode(data_mac.finalize().into_bytes());
+
+        let mut serializer = form_urlencoded::Serializer::new(String::new());
+        serializer.append_pair("query_id", "AAEAAAE");
+        serializer.append_pair("user", user_json);
+        serializer.append_pair("auth_date", &auth_date.to_string());
+        serializer.append_pair("hash", &hash);
+        serializer.finish()
+    }
+
+    #[test]
+    fn validates_signed_web_app_init_data() {
+        let token = "123456:fake-token";
+        let init_data = signed_init_data(
+            token,
+            1_700_000_000,
+            r#"{"id":42,"first_name":"Alice","username":"alice"}"#,
+        );
+
+        let user = validate_web_app_init_data_at(
+            &init_data,
+            token,
+            Duration::from_secs(86_400),
+            1_700_000_001,
+        )
+        .unwrap();
+
+        assert_eq!(user.id, 42);
+        assert_eq!(user.username.as_deref(), Some("alice"));
+    }
+
+    #[test]
+    fn rejects_wrong_bot_token() {
+        let init_data = signed_init_data(
+            "123456:fake-token",
+            1_700_000_000,
+            r#"{"id":42,"first_name":"Alice"}"#,
+        );
+
+        let err = validate_web_app_init_data_at(
+            &init_data,
+            "123456:other-token",
+            Duration::from_secs(86_400),
+            1_700_000_001,
+        )
+        .unwrap_err();
+
+        assert_eq!(err, TelegramAuthError::InvalidSignature);
+    }
+
+    #[test]
+    fn rejects_expired_init_data() {
+        let token = "123456:fake-token";
+        let init_data = signed_init_data(token, 1_700_000_000, r#"{"id":42}"#);
+
+        let err = validate_web_app_init_data_at(
+            &init_data,
+            token,
+            Duration::from_secs(60),
+            1_700_000_061,
+        )
+        .unwrap_err();
+
+        assert_eq!(err, TelegramAuthError::Expired);
+    }
+}

src/user.rs

@@ -17,6 +17,9 @@ pub struct User {
     email: Option<String>,
     display_name: Option<String>,
     avatar_url: Option<String>,
+    telegram_id: Option<String>,
+    telegram_link_code: Option<String>,
+    telegram_link_code_created_at: Option<i64>,
     role: LimitedString<32>,
     is_active: bool,
 }
@@ -53,6 +56,9 @@ impl User {
             email: email.map(str::to_owned),
             display_name: display_name.map(str::to_owned),
             avatar_url: None,
+            telegram_id: None,
+            telegram_link_code: None,
+            telegram_link_code_created_at: None,
             role: LimitedString::new(role).unwrap(),
             is_active: true,
         };
@@ -75,6 +81,9 @@ impl User {
             email: email.map(str::to_owned),
             display_name: display_name.map(str::to_owned),
             avatar_url: None,
+            telegram_id: None,
+            telegram_link_code: None,
+            telegram_link_code_created_at: None,
             role: LimitedString::new(role).unwrap(),
             is_active: true,
         };
@@ -117,6 +126,36 @@ impl User {
         cot::db::query!(User, $email == Some(email)).get(db).await
     }
 
+    /// Find a user linked to a non-empty Telegram ID.
+    pub async fn get_by_telegram_id(
+        db: &Database,
+        telegram_id: &str,
+    ) -> cot::db::Result<Option<Self>> {
+        let telegram_id = telegram_id.trim();
+        if telegram_id.is_empty() {
+            return Ok(None);
+        }
+        let telegram_id = telegram_id.to_owned();
+        cot::db::query!(User, $telegram_id == Some(telegram_id))
+            .get(db)
+            .await
+    }
+
+    /// Find a user waiting for this Telegram link code.
+    pub async fn get_by_telegram_link_code(
+        db: &Database,
+        code: &str,
+    ) -> cot::db::Result<Option<Self>> {
+        let code = code.trim();
+        if code.is_empty() {
+            return Ok(None);
+        }
+        let code = code.to_owned();
+        cot::db::query!(User, $telegram_link_code == Some(code))
+            .get(db)
+            .await
+    }
+
     /// Count all users in the database.
     pub async fn count_all(db: &Database) -> cot::db::Result<u64> {
         Self::objects().count(db).await
@@ -140,6 +179,56 @@ impl User {
         self.save(db).await
     }
 
+    /// Store a Telegram link state. `Some("")` means the user declined linking.
+    pub async fn set_telegram_id(
+        &mut self,
+        db: &Database,
+        telegram_id: Option<&str>,
+    ) -> cot::db::Result<()> {
+        self.telegram_id = telegram_id.map(str::to_owned);
+        self.save(db).await
+    }
+
+    /// Store or clear a pending Telegram link code.
+    pub async fn set_telegram_link_code(
+        &mut self,
+        db: &Database,
+        code: Option<&str>,
+        created_at: Option<i64>,
+    ) -> cot::db::Result<()> {
+        self.telegram_link_code = code.map(str::to_owned);
+        self.telegram_link_code_created_at = code.and(created_at);
+        self.save(db).await
+    }
+
+    /// Complete Telegram linking and clear any pending code.
+    pub async fn complete_telegram_link(
+        &mut self,
+        db: &Database,
+        telegram_id: &str,
+    ) -> cot::db::Result<()> {
+        self.telegram_id = Some(telegram_id.to_owned());
+        self.telegram_link_code = None;
+        self.telegram_link_code_created_at = None;
+        self.save(db).await
+    }
+
+    /// Remove Telegram credentials and pending link data.
+    pub async fn clear_telegram_link(&mut self, db: &Database) -> cot::db::Result<()> {
+        self.telegram_id = None;
+        self.telegram_link_code = None;
+        self.telegram_link_code_created_at = None;
+        self.save(db).await
+    }
+
+    /// Store an explicit opt-out and clear pending link data.
+    pub async fn decline_telegram_link(&mut self, db: &Database) -> cot::db::Result<()> {
+        self.telegram_id = Some(String::new());
+        self.telegram_link_code = None;
+        self.telegram_link_code_created_at = None;
+        self.save(db).await
+    }
+
     /// Delete this user by primary key.
     pub async fn delete_by_id(db: &Database, user_id: i64) -> cot::db::Result<()> {
         cot::db::query!(User, $id == Auto::Fixed(user_id))
@@ -165,6 +254,18 @@ impl User {
         self.display_name.clone().unwrap_or_default()
     }
 
+    pub fn telegram_id(&self) -> Option<&str> {
+        self.telegram_id.as_deref()
+    }
+
+    pub fn telegram_link_code(&self) -> Option<&str> {
+        self.telegram_link_code.as_deref()
+    }
+
+    pub fn telegram_link_code_created_at(&self) -> Option<i64> {
+        self.telegram_link_code_created_at
+    }
+
     pub fn role_str(&self) -> &str {
         &self.role
     }
@@ -391,9 +492,82 @@ pub mod db_migrations {
             &[Operation::custom(create_oidc_link_indexes).build()];
     }
 
+    // -- M0007: Telegram link state on amnezia_fellow__user ----------------
+
+    #[cot::db::migrations::migration_op]
+    async fn add_user_telegram_id(ctx: migrations::MigrationContext<'_>) -> cot::db::Result<()> {
+        ctx.db
+            .raw("ALTER TABLE amnezia_fellow__user ADD COLUMN telegram_id TEXT")
+            .await?;
+        ctx.db
+            .raw(
+                "CREATE UNIQUE INDEX idx_amnezia_fellow_user_telegram_id \
+                     ON amnezia_fellow__user (telegram_id) \
+                     WHERE telegram_id IS NOT NULL AND telegram_id != ''",
+            )
+            .await?;
+        Ok(())
+    }
+
+    #[derive(Debug, Copy, Clone)]
+    pub struct M0007UserTelegramId;
+
+    impl migrations::Migration for M0007UserTelegramId {
+        const APP_NAME: &'static str = "amnezia_fellow";
+        const MIGRATION_NAME: &'static str = "m_0007_user_telegram_id";
+        const DEPENDENCIES: &'static [migrations::MigrationDependency] =
+            &[migrations::MigrationDependency::migration(
+                "amnezia_fellow",
+                "m_0004_oidc_link_indexes",
+            )];
+        const OPERATIONS: &'static [Operation] = &[Operation::custom(add_user_telegram_id).build()];
+    }
+
+    // -- M0008: pending Telegram link code on amnezia_fellow__user ---------
+
+    #[cot::db::migrations::migration_op]
+    async fn add_user_telegram_link_code(
+        ctx: migrations::MigrationContext<'_>,
+    ) -> cot::db::Result<()> {
+        ctx.db
+            .raw("ALTER TABLE amnezia_fellow__user ADD COLUMN telegram_link_code TEXT")
+            .await?;
+        ctx.db
+            .raw(
+                "ALTER TABLE amnezia_fellow__user \
+                     ADD COLUMN telegram_link_code_created_at INTEGER",
+            )
+            .await?;
+        ctx.db
+            .raw(
+                "CREATE UNIQUE INDEX idx_amnezia_fellow_user_telegram_link_code \
+                     ON amnezia_fellow__user (telegram_link_code) \
+                     WHERE telegram_link_code IS NOT NULL AND telegram_link_code != ''",
+            )
+            .await?;
+        Ok(())
+    }
+
+    #[derive(Debug, Copy, Clone)]
+    pub struct M0008UserTelegramLinkCode;
+
+    impl migrations::Migration for M0008UserTelegramLinkCode {
+        const APP_NAME: &'static str = "amnezia_fellow";
+        const MIGRATION_NAME: &'static str = "m_0008_user_telegram_link_code";
+        const DEPENDENCIES: &'static [migrations::MigrationDependency] =
+            &[migrations::MigrationDependency::migration(
+                "amnezia_fellow",
+                "m_0007_user_telegram_id",
+            )];
+        const OPERATIONS: &'static [Operation] =
+            &[Operation::custom(add_user_telegram_link_code).build()];
+    }
+
     pub const MIGRATIONS: &[&SyncDynMigration] = &[
         &M0002CreateUser,
         &M0003CreateOidcLink,
         &M0004OidcLinkIndexes,
+        &M0007UserTelegramId,
+        &M0008UserTelegramLinkCode,
     ];
 }

src/vpn.rs

@@ -31,6 +31,7 @@ pub struct VpnClient {
     address: LimitedString<64>,
     public_key: LimitedString<128>,
     private_key: LimitedString<128>,
+    group_name: Option<String>,
     enabled: bool,
     created_at: LimitedString<64>,
     updated_at: LimitedString<64>,
@@ -45,6 +46,7 @@ pub struct VpnClientView {
     pub name: String,
     pub address: String,
     pub public_key: String,
+    pub group_name: Option<String>,
     pub enabled: bool,
     pub created_at: String,
     pub updated_at: String,
@@ -88,6 +90,7 @@ impl VpnClient {
         db: &Database,
         owner_user_id: i64,
         name: &str,
+        group_name: Option<&str>,
         cidr: &str,
     ) -> cot::db::Result<Self> {
         let keypair = generate_keypair().map_err(db_custom_error)?;
@@ -95,18 +98,15 @@ impl VpnClient {
             .await
             .map_err(db_custom_error)?;
         let now = now_timestamp();
-        let name = if name.trim().is_empty() {
-            "Amnezia client"
-        } else {
-            name.trim()
-        };
+        let name = client_name_for_storage(name)?;
         let mut client = Self {
             id: Auto::auto(),
             owner_user_id,
-            name: LimitedString::new(name).unwrap(),
+            name,
             address: LimitedString::new(address.as_str()).unwrap(),
             public_key: LimitedString::new(keypair.public_key.as_str()).unwrap(),
             private_key: LimitedString::new(keypair.private_key.as_str()).unwrap(),
+            group_name: group_name_for_storage(group_name)?,
             enabled: true,
             created_at: LimitedString::new(now.as_str()).unwrap(),
             updated_at: LimitedString::new(now.as_str()).unwrap(),
@@ -122,6 +122,22 @@ impl VpnClient {
         self.save(db).await
     }
 
+    pub async fn set_group(
+        &mut self,
+        db: &Database,
+        group_name: Option<&str>,
+    ) -> cot::db::Result<()> {
+        let group_name = group_name_for_storage(group_name)?;
+        if self.group_name == group_name {
+            return Ok(());
+        }
+
+        self.group_name = group_name;
+        let now = now_timestamp();
+        self.updated_at = LimitedString::new(now).unwrap();
+        self.save(db).await
+    }
+
     pub async fn delete_by_id(db: &Database, client_id: i64) -> cot::db::Result<()> {
         cot::db::query!(VpnClient, $id == Auto::Fixed(client_id))
             .delete(db)
@@ -138,6 +154,7 @@ impl VpnClient {
             name: self.name.to_string(),
             address: self.address.to_string(),
             public_key: self.public_key.to_string(),
+            group_name: self.group_name.as_ref().map(ToString::to_string),
             enabled: self.enabled,
             created_at: self.created_at.to_string(),
             updated_at: self.updated_at.to_string(),
@@ -171,6 +188,10 @@ impl VpnClient {
     pub fn private_key_str(&self) -> &str {
         &self.private_key
     }
+
+    pub fn group_name_str(&self) -> Option<&str> {
+        self.group_name.as_deref()
+    }
 }
 
 // ---------------------------------------------------------------------------
@@ -207,7 +228,7 @@ pub fn render_peer_secret(clients: &[VpnClient]) -> String {
             "# id={} owner={} name={}\n",
             client.id_val(),
             client.owner_user_id(),
-            client.name_str()
+            escaped_peer_comment_value(client.name_str())
         ));
         out.push_str(&format!("PublicKey = {}\n", client.public_key_str()));
         out.push_str(&format!("AllowedIPs = {}/32\n", client.address_str()));
@@ -215,6 +236,78 @@ pub fn render_peer_secret(clients: &[VpnClient]) -> String {
     out
 }
 
+pub fn render_client_policy(clients: &[VpnClient], cidr: &str) -> Result<String, String> {
+    parse_ipv4_cidr(cidr)?;
+
+    let mut groups = BTreeMap::<String, Vec<Ipv4Addr>>::new();
+    for client in clients.iter().filter(|client| client.enabled()) {
+        let Some(group_name) = client.group_name_str() else {
+            continue;
+        };
+        let address = client.address_str().parse::<Ipv4Addr>().map_err(|e| {
+            format!(
+                "client {} has invalid IPv4 address {:?}: {e}",
+                client.id_val(),
+                client.address_str()
+            )
+        })?;
+        if !ipv4_is_in_cidr(address, cidr)? {
+            return Err(format!(
+                "client {} address {} is outside VPN CIDR {cidr}",
+                client.id_val(),
+                address
+            ));
+        }
+        groups
+            .entry(group_name.to_owned())
+            .or_default()
+            .push(address);
+    }
+
+    let mut out =
+        format!("# Generated by amnezia-fellow. Exact allowed awg0-to-awg0 pairs for {cidr}.\n");
+    for addresses in groups.values_mut() {
+        addresses.sort_unstable();
+        addresses.dedup();
+        for source in addresses.iter() {
+            for destination in addresses.iter().filter(|address| *address != source) {
+                out.push_str(&format!("{source}/32 {destination}/32\n"));
+            }
+        }
+    }
+    Ok(out)
+}
+
+fn client_name_for_storage(name: &str) -> cot::db::Result<LimitedString<255>> {
+    let name = if name.is_empty() {
+        "Amnezia client"
+    } else {
+        name
+    };
+    LimitedString::new(name.to_owned())
+        .map_err(|e| db_custom_error(format!("client name is too long: {e}")))
+}
+
+fn group_name_for_storage(group_name: Option<&str>) -> cot::db::Result<Option<String>> {
+    let Some(group_name) = group_name.map(str::trim).filter(|name| !name.is_empty()) else {
+        return Ok(None);
+    };
+    if group_name.len() > 255 {
+        return Err(db_custom_error("group name is too long".to_owned()));
+    }
+    Ok(Some(group_name.to_owned()))
+}
+
+fn escaped_peer_comment_value(value: &str) -> String {
+    let mut escaped = String::with_capacity(value.len() + 2);
+    escaped.push('"');
+    for ch in value.chars() {
+        escaped.extend(ch.escape_default());
+    }
+    escaped.push('"');
+    escaped
+}
+
 pub fn render_client_config(
     client: &VpnClient,
     server_public_key: &str,
@@ -399,6 +492,12 @@ fn qcompress(data: &[u8]) -> Result<Vec<u8>, String> {
 
 const CLIENT_SECRET_UPDATED_AT_ANNOTATION: &str =
     "amnezia-fellow.hexor.cy/client-secret-updated-at-ms";
+const CLIENT_SECRET_APPLIED_AT_ANNOTATION: &str =
+    "amnezia-fellow.hexor.cy/client-secret-applied-at-ms";
+const CLIENT_SECRET_APPLIED_HASH_ANNOTATION: &str =
+    "amnezia-fellow.hexor.cy/client-secret-applied-hash";
+const CLIENT_SECRET_RELOAD_STATUS_ANNOTATION: &str =
+    "amnezia-fellow.hexor.cy/client-secret-reload-status";
 const AMNEZIAWG_POD_LABEL_SELECTOR: &str = "app=amneziawg";
 
 #[derive(Debug, Clone, Serialize, JsonSchema)]
@@ -410,6 +509,7 @@ pub struct SecretSyncResult {
 pub async fn sync_clients_secret(
     config: &AppConfig,
     rendered_peers: String,
+    rendered_policy: String,
 ) -> Result<SecretSyncResult, String> {
     let client = Client::try_default()
         .await
@@ -417,13 +517,18 @@ pub async fn sync_clients_secret(
     let api: Api<Secret> = Api::namespaced(client, &config.k8s_namespace);
 
     let desired = rendered_peers.into_bytes();
+    let desired_policy = rendered_policy.into_bytes();
     let name = &config.k8s_clients_secret;
     let key = &config.k8s_clients_secret_key;
+    let policy_key = "policy.conf";
 
     match api.get_opt(name).await {
         Ok(Some(mut secret)) => {
             let mut data = secret.data.take().unwrap_or_default();
-            if data.get(key).map(|value| value.0.as_slice()) == Some(desired.as_slice()) {
+            if data.get(key).map(|value| value.0.as_slice()) == Some(desired.as_slice())
+                && data.get(policy_key).map(|value| value.0.as_slice())
+                    == Some(desired_policy.as_slice())
+            {
                 return Ok(SecretSyncResult {
                     changed: false,
                     message: "client Secret is already up to date".to_owned(),
@@ -431,6 +536,10 @@ pub async fn sync_clients_secret(
             }
 
             data.insert(key.clone(), k8s_openapi::ByteString(desired));
+            data.insert(
+                policy_key.to_owned(),
+                k8s_openapi::ByteString(desired_policy),
+            );
             secret.data = Some(data);
             mark_client_secret_updated(&mut secret);
             api.replace(name, &PostParams::default(), &secret)
@@ -444,6 +553,10 @@ pub async fn sync_clients_secret(
         Ok(None) => {
             let mut data = BTreeMap::new();
             data.insert(key.clone(), k8s_openapi::ByteString(desired));
+            data.insert(
+                policy_key.to_owned(),
+                k8s_openapi::ByteString(desired_policy),
+            );
             let secret = Secret {
                 metadata: ObjectMeta {
                     name: Some(name.clone()),
@@ -476,7 +589,8 @@ pub async fn sync_from_database(
     let clients = VpnClient::list_all(db)
         .await
         .map_err(|e| format!("failed to list VPN clients: {e}"))?;
-    sync_clients_secret(config, render_peer_secret(&clients)).await
+    let policy = render_client_policy(&clients, &config.vpn_client_cidr)?;
+    sync_clients_secret(config, render_peer_secret(&clients), policy).await
 }
 
 fn mark_client_secret_updated(secret: &mut Secret) {
@@ -613,6 +727,9 @@ pub struct VpnPodRolloutStatus {
     pub ready: bool,
     pub restart_count: i32,
     pub started_at_ms: Option<i64>,
+    pub config_applied_at_ms: Option<i64>,
+    pub config_applied_hash: Option<String>,
+    pub config_reload_status: Option<String>,
     pub uptime_seconds: Option<u64>,
     pub rollout_status: String,
     pub message: Option<String>,
@@ -705,6 +822,7 @@ fn pod_rollout_status(
     config_updated_at_ms: Option<i64>,
     now_ms: i64,
 ) -> VpnPodRolloutStatus {
+    let annotations = pod.metadata.annotations.clone().unwrap_or_default();
     let name = pod.metadata.name.unwrap_or_default();
     let node_name = pod
         .spec
@@ -728,11 +846,26 @@ fn pod_rollout_status(
     let started_at_ms = status
         .and_then(|status| status.start_time.as_ref())
         .map(time_to_millis);
+    let config_applied_at_ms = annotation_i64(&annotations, CLIENT_SECRET_APPLIED_AT_ANNOTATION);
+    let config_applied_hash = annotations
+        .get(CLIENT_SECRET_APPLIED_HASH_ANNOTATION)
+        .filter(|value| !value.is_empty())
+        .cloned();
+    let config_reload_status = annotations
+        .get(CLIENT_SECRET_RELOAD_STATUS_ANNOTATION)
+        .filter(|value| !value.is_empty())
+        .cloned();
     let uptime_seconds = started_at_ms.map(|started| {
         let elapsed_ms = now_ms.saturating_sub(started);
         (elapsed_ms / 1000) as u64
     });
-    let rollout_status = rollout_status(config_updated_at_ms, started_at_ms, ready);
+    let rollout_status = rollout_status(
+        config_updated_at_ms,
+        started_at_ms,
+        config_applied_at_ms,
+        config_reload_status.as_deref(),
+        ready,
+    );
     let message = status.and_then(|status| status.message.clone().or(status.reason.clone()));
 
     VpnPodRolloutStatus {
@@ -744,6 +877,9 @@ fn pod_rollout_status(
         ready,
         restart_count,
         started_at_ms,
+        config_applied_at_ms,
+        config_applied_hash,
+        config_reload_status,
         uptime_seconds,
         rollout_status,
         message,
@@ -781,14 +917,21 @@ fn amneziawg_restart_count(status: &k8s_openapi::api::core::v1::PodStatus) -> i3
 fn rollout_status(
     config_updated_at_ms: Option<i64>,
     started_at_ms: Option<i64>,
+    config_applied_at_ms: Option<i64>,
+    config_reload_status: Option<&str>,
     ready: bool,
 ) -> String {
-    match (config_updated_at_ms, started_at_ms) {
+    if config_reload_status == Some("error") {
+        return "error".to_owned();
+    }
+
+    let effective_applied_at_ms = started_at_ms.into_iter().chain(config_applied_at_ms).max();
+    match (config_updated_at_ms, effective_applied_at_ms) {
         (None, _) => "unknown".to_owned(),
-        (Some(_), None) => "pending_restart".to_owned(),
+        (Some(_), None) => "pending_apply".to_owned(),
         (Some(updated), Some(started)) if started >= updated && ready => "applied".to_owned(),
         (Some(updated), Some(started)) if started >= updated => "starting".to_owned(),
-        (Some(_), Some(_)) => "pending_restart".to_owned(),
+        (Some(_), Some(_)) => "pending_apply".to_owned(),
     }
 }
 
@@ -802,6 +945,10 @@ fn client_secret_updated_at_ms(secret: &Secret) -> Option<i64> {
         .ok()
 }
 
+fn annotation_i64(annotations: &BTreeMap<String, String>, key: &str) -> Option<i64> {
+    annotations.get(key)?.parse().ok()
+}
+
 fn time_to_millis(time: &Time) -> i64 {
     time.0.as_millisecond()
 }
@@ -865,6 +1012,16 @@ fn parse_ipv4_cidr(cidr: &str) -> Result<(Ipv4Addr, u32), String> {
     Ok((u32_to_ipv4(ipv4_to_u32(ip) & mask), prefix))
 }
 
+fn ipv4_is_in_cidr(address: Ipv4Addr, cidr: &str) -> Result<bool, String> {
+    let (network, prefix) = parse_ipv4_cidr(cidr)?;
+    let mask = if prefix == 0 {
+        0
+    } else {
+        u32::MAX << (32 - prefix)
+    };
+    Ok(ipv4_to_u32(address) & mask == ipv4_to_u32(network))
+}
+
 fn ipv4_to_u32(ip: Ipv4Addr) -> u32 {
     u32::from_be_bytes(ip.octets())
 }
@@ -976,13 +1133,112 @@ pub mod db_migrations {
             &[Operation::custom(create_vpn_client_indexes).build()];
     }
 
-    pub const MIGRATIONS: &[&SyncDynMigration] = &[&M0005CreateVpnClient, &M0006VpnClientIndexes];
+    #[cot::db::migrations::migration_op]
+    async fn normalize_bigint_ids(ctx: migrations::MigrationContext<'_>) -> cot::db::Result<()> {
+        if ctx
+            .db
+            .raw("SELECT current_setting('server_version_num')")
+            .await
+            .is_err()
+        {
+            return Ok(());
+        }
+
+        for sql in [
+            "ALTER TABLE amnezia_fellow__user ALTER COLUMN id TYPE BIGINT",
+            "ALTER TABLE amnezia_fellow__user \
+                ALTER COLUMN telegram_link_code_created_at TYPE BIGINT",
+            "ALTER TABLE amnezia_fellow__oidc_link ALTER COLUMN id TYPE BIGINT",
+            "ALTER TABLE amnezia_fellow__oidc_link ALTER COLUMN user_id TYPE BIGINT",
+            "ALTER TABLE amnezia_fellow__vpn_client ALTER COLUMN id TYPE BIGINT",
+            "ALTER TABLE amnezia_fellow__vpn_client ALTER COLUMN owner_user_id TYPE BIGINT",
+        ] {
+            ctx.db.raw(sql).await?;
+        }
+
+        Ok(())
+    }
+
+    #[derive(Debug, Copy, Clone)]
+    pub struct M0009NormalizeBigintIds;
+
+    impl migrations::Migration for M0009NormalizeBigintIds {
+        const APP_NAME: &'static str = "amnezia_fellow";
+        const MIGRATION_NAME: &'static str = "m_0009_normalize_bigint_ids";
+        const DEPENDENCIES: &'static [migrations::MigrationDependency] = &[
+            migrations::MigrationDependency::migration(
+                "amnezia_fellow",
+                "m_0006_vpn_client_indexes",
+            ),
+            migrations::MigrationDependency::migration(
+                "amnezia_fellow",
+                "m_0008_user_telegram_link_code",
+            ),
+        ];
+        const OPERATIONS: &'static [Operation] = &[Operation::custom(normalize_bigint_ids).build()];
+    }
+
+    #[cot::db::migrations::migration_op]
+    async fn add_vpn_client_group_name(
+        ctx: migrations::MigrationContext<'_>,
+    ) -> cot::db::Result<()> {
+        ctx.db
+            .raw(
+                "ALTER TABLE amnezia_fellow__vpn_client \
+                 ADD COLUMN group_name VARCHAR(255)",
+            )
+            .await?;
+        ctx.db
+            .raw(
+                "CREATE INDEX idx_amnezia_fellow_vpn_client_owner_group \
+                 ON amnezia_fellow__vpn_client (owner_user_id, group_name)",
+            )
+            .await?;
+        Ok(())
+    }
+
+    #[derive(Debug, Copy, Clone)]
+    pub struct M0010VpnClientGroupName;
+
+    impl migrations::Migration for M0010VpnClientGroupName {
+        const APP_NAME: &'static str = "amnezia_fellow";
+        const MIGRATION_NAME: &'static str = "m_0010_vpn_client_group_name";
+        const DEPENDENCIES: &'static [migrations::MigrationDependency] =
+            &[migrations::MigrationDependency::migration(
+                "amnezia_fellow",
+                "m_0009_normalize_bigint_ids",
+            )];
+        const OPERATIONS: &'static [Operation] =
+            &[Operation::custom(add_vpn_client_group_name).build()];
+    }
+
+    pub const MIGRATIONS: &[&SyncDynMigration] = &[
+        &M0005CreateVpnClient,
+        &M0006VpnClientIndexes,
+        &M0009NormalizeBigintIds,
+        &M0010VpnClientGroupName,
+    ];
 }
 
 #[cfg(test)]
 mod tests {
     use super::*;
 
+    fn test_client(id: i64, owner: i64, address: &str, group_name: Option<&str>) -> VpnClient {
+        VpnClient {
+            id: Auto::Fixed(id),
+            owner_user_id: owner,
+            name: LimitedString::new(format!("client-{id}")).unwrap(),
+            address: LimitedString::new(address).unwrap(),
+            public_key: LimitedString::new(format!("public-{id}")).unwrap(),
+            private_key: LimitedString::new(format!("private-{id}")).unwrap(),
+            group_name: group_name.map(str::to_owned),
+            enabled: true,
+            created_at: LimitedString::new("0").unwrap(),
+            updated_at: LimitedString::new("0").unwrap(),
+        }
+    }
+
     #[test]
     fn cidr_parser_normalizes_network() {
         let (network, prefix) = parse_ipv4_cidr("10.8.42.7/16").unwrap();
@@ -997,6 +1253,33 @@ mod tests {
         assert_eq!(keypair.public_key.len(), 44);
     }
 
+    #[test]
+    fn client_policy_allows_only_exact_pairs_with_same_group() {
+        let clients = vec![
+            test_client(1, 10, "10.8.0.2", Some("home")),
+            test_client(2, 10, "10.8.0.3", Some("home")),
+            test_client(3, 10, "10.8.0.4", Some("other")),
+            test_client(4, 11, "10.8.0.5", Some("home")),
+            test_client(5, 10, "10.8.0.6", None),
+        ];
+
+        let policy = render_client_policy(&clients, "10.8.0.0/16").unwrap();
+        assert!(policy.contains("10.8.0.2/32 10.8.0.3/32\n"));
+        assert!(policy.contains("10.8.0.3/32 10.8.0.2/32\n"));
+        assert!(policy.contains("10.8.0.2/32 10.8.0.5/32\n"));
+        assert!(policy.contains("10.8.0.5/32 10.8.0.2/32\n"));
+        assert_eq!(
+            policy.lines().filter(|line| !line.starts_with('#')).count(),
+            6
+        );
+    }
+
+    #[test]
+    fn client_policy_rejects_address_outside_vpn_cidr() {
+        let clients = vec![test_client(1, 10, "192.0.2.2", Some("home"))];
+        assert!(render_client_policy(&clients, "10.8.0.0/16").is_err());
+    }
+
     #[test]
     fn endpoint_parser_accepts_ipv4_and_bracketed_ipv6() {
         assert_eq!(
@@ -1023,6 +1306,36 @@ mod tests {
         assert_eq!(vpn_url_description("  ", "phone"), "phone");
     }
 
+    #[test]
+    fn client_name_for_storage_preserves_weird_names() {
+        let raw = r#" витя хуй !! "" 233; 3№№## ''' @ "#;
+        let stored = client_name_for_storage(raw).unwrap();
+        assert_eq!(stored.to_string(), raw);
+    }
+
+    #[test]
+    fn peer_secret_escapes_client_name_comment() {
+        let raw = "витя хуй !! \"\" 233; 3№№## ''' @\nAllowedIPs = 0.0.0.0/0";
+        let client = VpnClient {
+            id: Auto::Fixed(7),
+            owner_user_id: 1,
+            name: LimitedString::new(raw).unwrap(),
+            address: LimitedString::new("10.8.0.2").unwrap(),
+            public_key: LimitedString::new("client-public-key").unwrap(),
+            private_key: LimitedString::new("client-private-key").unwrap(),
+            group_name: None,
+            enabled: true,
+            created_at: LimitedString::new("2026-06-16T00:00:00Z").unwrap(),
+            updated_at: LimitedString::new("2026-06-16T00:00:00Z").unwrap(),
+        };
+
+        let rendered = render_peer_secret(&[client]);
+        assert!(rendered.contains(r#"name="\u{432}\u{438}\u{442}\u{44f} "#));
+        assert!(rendered.contains(r#"\nAllowedIPs = 0.0.0.0/0""#));
+        assert!(!rendered.contains("\nAllowedIPs = 0.0.0.0/0\n"));
+        assert_eq!(rendered.matches("[Peer]").count(), 1);
+    }
+
     #[test]
     fn endpoint_name_overrides_parse_json_map() {
         let config = AppConfig {
@@ -1037,6 +1350,22 @@ mod tests {
         assert!(!overrides.contains_key("empty"));
     }
 
+    #[test]
+    fn rollout_status_uses_hot_reload_annotations() {
+        assert_eq!(
+            rollout_status(Some(2_000), Some(1_000), Some(3_000), Some("applied"), true),
+            "applied"
+        );
+        assert_eq!(
+            rollout_status(Some(2_000), Some(1_000), None, Some("error"), true),
+            "error"
+        );
+        assert_eq!(
+            rollout_status(Some(2_000), Some(1_000), None, None, true),
+            "pending_apply"
+        );
+    }
+
     #[test]
     fn qcompress_uses_qt_wire_format() {
         let payload = br#"{"description":"de-fsn1"}"#;
@@ -1060,6 +1389,7 @@ mod tests {
             address: LimitedString::new("10.8.0.2").unwrap(),
             public_key: LimitedString::new("client-public-key").unwrap(),
             private_key: LimitedString::new("client-private-key").unwrap(),
+            group_name: None,
             enabled: true,
             created_at: LimitedString::new("2026-06-16T00:00:00Z").unwrap(),
             updated_at: LimitedString::new("2026-06-16T00:00:00Z").unwrap(),

templates/admin/app.html

@@ -47,6 +47,9 @@
     .section-tabs button.active { background: #17202a; color: #fff; border-color: #17202a; }
     .settings-grid { display: grid; grid-template-columns: minmax(180px, .7fr) minmax(240px, 1fr) auto; gap: .55rem .75rem; align-items: center; background: #fff; border: 1px solid #dde2e6; border-radius: 6px; padding: .75rem; }
     .settings-row { display: contents; }
+    .settings-info-row { grid-column: 1 / -1; border: 1px solid #dde2e6; border-left: 4px solid #2d6cdf; border-radius: 6px; background: #f8fafc; padding: .75rem; display: grid; gap: .45rem; }
+    .settings-info-title { color: #1d2733; font-weight: 750; }
+    .settings-info-text { margin: 0; color: #34414f; white-space: pre-wrap; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .84rem; line-height: 1.45; }
     .field-name { font-weight: 650; color: #34414f; overflow-wrap: anywhere; }
     .field-help { color: #53606d; font-size: .78rem; margin-top: .15rem; overflow-wrap: anywhere; }
     .badge { display: inline-block; padding: .15rem .55rem; border-radius: 4px; font-size: .8rem; font-weight: 650; }
@@ -191,21 +194,33 @@
                 <template x-if="settings.fields.length > 0">
                     <div class="settings-grid">
                         <template x-for="field in visibleSettings()" :key="field.key">
-                            <div class="settings-row">
-                                <div class="field-name">
-                                    <span x-text="fieldLabel(field.key)"></span>
-                                    <div class="field-help" x-text="field.env_var"></div>
-                                </div>
-                                <div>
-                                    <template x-if="field.kind === 'bool'">
-                                        <input type="checkbox" x-model="settingsForm[field.key]">
-                                    </template>
-                                    <template x-if="field.kind !== 'bool'">
-                                        <input :type="field.kind === 'password' ? 'password' : field.kind" x-model="settingsForm[field.key]">
-                                    </template>
-                                    <div class="hint">default: <code x-text="field.default_value || '(empty)'"></code></div>
-                                </div>
-                                <span class="badge" :class="`badge-${field.source}`" x-text="field.source"></span>
+                            <div :class="field.kind === 'info' ? 'settings-info-row' : 'settings-row'">
+                                <template x-if="field.kind === 'info'">
+                                    <div>
+                                        <div class="settings-info-title" x-text="fieldLabel(field.key)"></div>
+                                        <pre class="settings-info-text" x-text="field.value"></pre>
+                                    </div>
+                                </template>
+                                <template x-if="field.kind !== 'info'">
+                                    <div class="field-name">
+                                        <span x-text="fieldLabel(field.key)"></span>
+                                        <div class="field-help" x-text="field.env_var"></div>
+                                    </div>
+                                </template>
+                                <template x-if="field.kind !== 'info'">
+                                    <div>
+                                        <template x-if="field.kind === 'bool'">
+                                            <input type="checkbox" x-model="settingsForm[field.key]">
+                                        </template>
+                                        <template x-if="field.kind !== 'bool'">
+                                            <input :type="field.kind === 'password' ? 'password' : field.kind" x-model="settingsForm[field.key]">
+                                        </template>
+                                        <div class="hint">default: <code x-text="field.default_value || '(empty)'"></code></div>
+                                    </div>
+                                </template>
+                                <template x-if="field.kind !== 'info'">
+                                    <span class="badge" :class="`badge-${field.source}`" x-text="field.source"></span>
+                                </template>
                             </div>
                         </template>
                     </div>
@@ -316,7 +331,7 @@ function adminApp(initialView) {
         settings: { fields: [] },
         settingsForm: {},
         settingsSection: 'auth',
-        settingSections: ['auth', 'oidc', 'kubernetes', 'vpn', 'api'],
+        settingSections: ['auth', 'oidc', 'kubernetes', 'vpn', 'api', 'telegram'],
         debug: null,
         userModalOpen: false,
         userForm: {},
@@ -401,6 +416,7 @@ function adminApp(initialView) {
                 this.settings = await this.request('/admin/api/settings');
                 const form = {};
                 for (const field of this.settings.fields) {
+                    if (field.kind === 'info') continue;
                     form[field.key] = field.kind === 'bool' ? field.value === 'true' : field.value;
                 }
                 this.settingsForm = form;
@@ -491,6 +507,7 @@ function adminApp(initialView) {
                 kubernetes: '{{ t.settings_kubernetes }}',
                 vpn: '{{ t.settings_vpn }}',
                 api: '{{ t.settings_api }}',
+                telegram: '{{ t.settings_telegram }}',
             }[section] || section;
         },
         fieldLabel(key) {
@@ -501,6 +518,10 @@ function adminApp(initialView) {
                 oidc_admin_groups: '{{ t.settings_oidc_admin_groups }}',
                 oidc_client_groups: '{{ t.settings_oidc_client_groups }}',
                 swagger_enabled: '{{ t.settings_swagger }}',
+                telegram_bot_enabled: '{{ t.settings_telegram_enabled }}',
+                telegram_bot_username: '{{ t.settings_telegram_username }}',
+                telegram_bot_token: '{{ t.settings_telegram_token }}',
+                telegram_setup_instructions: '{{ t.settings_telegram_setup_instructions }}',
             }[key] || key;
         },
     };

templates/login.html

@@ -3,6 +3,7 @@
 {% block title %}{{ t.login_heading }} | {{ t.site_name }}{% endblock title %}
 
 {% block head_extra %}
+<script src="https://telegram.org/js/telegram-web-app.js"></script>
 <style>
     * { margin: 0; padding: 0; box-sizing: border-box; }
     body { font-family: system-ui, -apple-system, sans-serif; background: #f5f5f5; color: #333; display: flex; justify-content: center; align-items: center; min-height: 100vh; }
@@ -30,6 +31,7 @@
     {% if !message.is_empty() %}
     <div class="flash">{{ message }}</div>
     {% endif %}
+    <div id="telegram-login-flash" class="flash" style="display: none;"></div>
 
     {% if !auth_password_enabled && !auth_sso_enabled %}
     <p class="message">{{ t.login_disabled }}</p>
@@ -53,4 +55,37 @@
     <a class="sso-btn" href="/auth/oidc/start">{{ oidc_button_text }}</a>
     {% endif %}
 </div>
+
+<script>
+(async () => {
+    const webApp = window.Telegram && window.Telegram.WebApp;
+    if (!webApp || !webApp.initData) return;
+
+    try {
+        webApp.ready();
+        webApp.expand();
+    } catch (_) {}
+
+    try {
+        const response = await fetch('/api/telegram-login/webapp', {
+            method: 'POST',
+            credentials: 'same-origin',
+            headers: { 'content-type': 'application/json' },
+            body: JSON.stringify({ init_data: webApp.initData }),
+        });
+        const data = await response.json().catch(() => ({}));
+        if (response.ok) {
+            window.location.replace(data.redirect_to || '/configs');
+            return;
+        }
+        const flash = document.getElementById('telegram-login-flash');
+        flash.textContent = data.error || data.detail || '{{ t.login_telegram_failed }}';
+        flash.style.display = 'block';
+    } catch (_) {
+        const flash = document.getElementById('telegram-login-flash');
+        flash.textContent = '{{ t.login_telegram_failed }}';
+        flash.style.display = 'block';
+    }
+})();
+</script>
 {% endblock body %}

templates/telegram_login.html

@@ -0,0 +1,62 @@
+{% extends "base.html" %}
+
+{% block title %}{{ t.login_heading }} | {{ t.site_name }}{% endblock title %}
+
+{% block head_extra %}
+<script src="https://telegram.org/js/telegram-web-app.js"></script>
+<style>
+    * { box-sizing: border-box; }
+    body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 1rem; background: #f5f5f5; color: #333; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
+    .telegram-login-card { width: min(380px, 100%); border-radius: 8px; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.12); padding: 2rem; text-align: center; display: grid; gap: .8rem; }
+    .telegram-login-card h1 { margin: 0; font-size: 1.35rem; }
+    .telegram-login-card p { margin: 0; color: #666; line-height: 1.45; }
+    .telegram-login-card a { color: #1a1a2e; font-weight: 700; }
+</style>
+{% endblock head_extra %}
+
+{% block body %}
+<div class="telegram-login-card">
+    <h1>{{ t.login_heading }}</h1>
+    <p id="telegram-login-status">{{ t.login_telegram_wait }}</p>
+    <a href="/login">{{ t.login_telegram_fallback }}</a>
+</div>
+
+<script>
+(async () => {
+    const status = document.getElementById('telegram-login-status');
+    const fallback = () => window.location.replace('/login');
+    const webApp = window.Telegram && window.Telegram.WebApp;
+
+    try {
+        if (webApp) {
+            webApp.ready();
+            webApp.expand();
+        }
+    } catch (_) {}
+
+    if (!webApp || !webApp.initData) {
+        fallback();
+        return;
+    }
+
+    try {
+        const response = await fetch('/api/telegram-login/webapp', {
+            method: 'POST',
+            credentials: 'same-origin',
+            headers: { 'content-type': 'application/json' },
+            body: JSON.stringify({ init_data: webApp.initData }),
+        });
+        const data = await response.json().catch(() => ({}));
+        if (!response.ok) {
+            status.textContent = data.error || data.detail || '{{ t.login_telegram_failed }}';
+            setTimeout(fallback, 1800);
+            return;
+        }
+        window.location.replace(data.redirect_to || '/configs');
+    } catch (_) {
+        status.textContent = '{{ t.login_telegram_failed }}';
+        setTimeout(fallback, 1800);
+    }
+})();
+</script>
+{% endblock body %}