use axum::{
    Json,
    http::StatusCode,
    response::{IntoResponse, Response},
};
use serde_json::json;

#[derive(Debug)]
pub struct AppError {
    status: StatusCode,
    message: String,
}

impl AppError {
    pub fn bad_request(message: impl Into<String>) -> Self {
        Self {
            status: StatusCode::BAD_REQUEST,
            message: message.into(),
        }
    }

    pub fn not_found(message: impl Into<String>) -> Self {
        Self {
            status: StatusCode::NOT_FOUND,
            message: message.into(),
        }
    }

    pub fn internal(error: impl std::fmt::Display) -> Self {
        tracing::error!(%error, "request failed");
        Self {
            status: StatusCode::INTERNAL_SERVER_ERROR,
            message: "internal server error".into(),
        }
    }
}

impl IntoResponse for AppError {
    fn into_response(self) -> Response {
        (self.status, Json(json!({ "error": self.message }))).into_response()
    }
}