'use strict';

const assert = require('node:assert/strict');
const test = require('node:test');

const {
  TelegramNotifier,
  formatLobbyMessage,
  parseRecipientIds,
  validateBotToken,
} = require('../lib/telegram-notifier');

class MemoryStore {
  constructor(initial = null) {
    this.value = initial;
  }

  load() {
    return this.value;
  }

  save(value) {
    this.value = JSON.parse(JSON.stringify(value));
  }
}

function fakeResponse(result) {
  return {
    ok: true,
    status: 200,
    json: async () => ({ ok: true, result }),
  };
}

test('validates Telegram bot tokens and numeric recipient IDs without losing precision', () => {
  assert.equal(validateBotToken('123456:abcdefghijklmnopqrstuvwxyz_ABC'), '123456:abcdefghijklmnopqrstuvwxyz_ABC');
  assert.deepEqual(parseRecipientIds('123456789, 4503599627370495; 123456789'), [
    '123456789',
    '4503599627370495',
  ]);
  assert.throws(() => parseRecipientIds('alice'), /positive numeric/);
  assert.throws(() => parseRecipientIds('4503599627370496'), /positive numeric/);
});

test('formats lobby status with real-player count and resolved member names', () => {
  const text = formatLobbyMessage(
    {
      lobbyName: 'Duos queue',
      customMapName: 'duos',
      customMaxPlayers: 12,
      notifyAtPlayers: 8,
      leaveAtPlayers: 9,
      serverRegion: 9,
    },
    {
      phase: 'monitoring',
      lobbyId: '29963550000000000',
      humanCount: 2,
      practicePublished: true,
      members: [
        { steamId: '76561198000000001', name: 'Alice' },
        { steamId: '76561198000000002', name: 'Bob' },
      ],
    },
  );

  assert.match(text, /Игроки: 2\/12/);
  assert.match(text, /1\. Alice \(76561198000000001\)/);
  assert.match(text, /2\. Bob \(76561198000000002\)/);
  assert.match(text, /Публикация: в списке лобби/);
});

test('sends one tracker message and edits it only when lobby content changes', async () => {
  const calls = [];
  const fetchImpl = async (url, options) => {
    const method = url.split('/').at(-1);
    const payload = JSON.parse(options.body);
    calls.push({ method, payload });
    if (method === 'getMe') return fakeResponse({ id: 99, username: 'lobby_bot' });
    if (method === 'sendMessage') return fakeResponse({ message_id: 42 });
    if (method === 'editMessageText') return fakeResponse({ message_id: 42 });
    throw new Error(`Unexpected method ${method}`);
  };
  const store = new MemoryStore();
  const notifier = new TelegramNotifier({ store, fetchImpl, debounceMs: 1 });
  await notifier.configure({
    token: '123456:abcdefghijklmnopqrstuvwxyz_ABC',
    recipientIds: ['123456789'],
  });
  assert.equal(notifier.publicState().configured, true);
  assert.equal(notifier.publicState().token, undefined);

  notifier.beginLobbySession();
  const settings = { lobbyName: 'Duos', customMaxPlayers: 12 };
  const first = {
    phase: 'monitoring',
    armed: true,
    lobbyId: '123',
    humanCount: 1,
    members: [{ steamId: '76561198000000001', name: 'Alice' }],
  };
  await notifier.syncLobby(settings, first);
  await notifier.syncLobby(settings, first);
  const restoredNotifier = new TelegramNotifier({ store, fetchImpl, debounceMs: 1 });
  await restoredNotifier.syncLobby(settings, {
    ...first,
    humanCount: 2,
    members: [...first.members, { steamId: '76561198000000002', name: 'Bob' }],
  });

  assert.deepEqual(calls.map((call) => call.method), ['getMe', 'sendMessage', 'editMessageText']);
  assert.equal(calls[1].payload.chat_id, '123456789');
  assert.equal(calls[2].payload.message_id, 42);
  assert.match(calls[2].payload.text, /Игроки: 2\/12/);
  assert.equal(store.value.token, '123456:abcdefghijklmnopqrstuvwxyz_ABC');
});

test('test delivery reports recipients that have not started the bot chat', async () => {
  const fetchImpl = async (url) => {
    const method = url.split('/').at(-1);
    if (method === 'getMe') return fakeResponse({ id: 99, username: 'lobby_bot' });
    return {
      ok: false,
      status: 403,
      json: async () => ({ ok: false, error_code: 403, description: 'Forbidden: bot can\'t initiate conversation with a user' }),
    };
  };
  const notifier = new TelegramNotifier({ store: new MemoryStore(), fetchImpl });
  await notifier.configure({
    token: '123456:abcdefghijklmnopqrstuvwxyz_ABC',
    recipientIds: ['123456789'],
  });
  const result = await notifier.sendTest();
  assert.equal(result.delivered, 0);
  assert.equal(result.failed, 1);
  assert.match(result.errors[0], /can't initiate conversation/);
});