import { describe, expect, it } from 'vitest';

import { enableTotp, login, logoutAll, register, setupTotp, stepUp } from '@/api/auth';
import { createChannel, fetchChannels, joinGuild, leaveGuild } from '@/api/guilds';
import { fetchInstance, fetchAudit } from '@/api/instance';
import { fetchMyGuilds, updateProfile } from '@/api/users';
import { ApiError } from '@/api/client';
import { findRequest, installFetch, json, recordedRequests } from './helpers';

function lastCall(fetchMock: ReturnType<typeof installFetch>) {
  const request = recordedRequests(fetchMock).at(-1);
  if (request === undefined) {
    throw new Error('fetch не вызывался');
  }
  return request;
}

describe('api-модули Фазы 1', () => {
  it('register/login отправляют POST с телом и читают поле user', async () => {
    const fetchMock = installFetch([
      {
        match: '/api/v1/auth/register',
        method: 'POST',
        response: () => json({ user: { id: 'u' } }),
      },
    ]);

    await expect(
      register({
        username: 'alice',
        display_name: 'Alice',
        email: 'a@b.co',
        password: 'password12',
        locale: 'ru',
      }),
    ).resolves.toEqual({ user: { id: 'u' } });
    expect(findRequest(fetchMock, { url: '/auth/register', method: 'POST' })?.method).toBe('POST');
  });

  it('login отправляет POST с телом', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/auth/login', method: 'POST', response: () => json({ user: { id: 'u' } }) },
    ]);

    await login({ email: 'a@b.co', password: 'password12' });

    expect(findRequest(fetchMock, { url: '/auth/login', method: 'POST' })?.body).toEqual({
      email: 'a@b.co',
      password: 'password12',
    });
  });

  it('login прокидывает код 2FA как totp_code', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/auth/login', method: 'POST', response: () => json({ user: { id: 'u' } }) },
    ]);

    await login({ email: 'a@b.co', password: 'password12', totp_code: '123456' });

    expect(lastCall(fetchMock).body).toEqual({
      email: 'a@b.co',
      password: 'password12',
      totp_code: '123456',
    });
  });

  it('setup/enable 2FA и step-up используют нужные пути', async () => {
    const fetchMock = installFetch([
      {
        match: '/api/v1/auth/2fa/setup',
        method: 'POST',
        response: () => json({ secret: 'SECRET', otpauth_url: 'otpauth://x' }),
      },
      {
        match: '/api/v1/auth/2fa/enable',
        method: 'POST',
        response: () => json({ recovery_codes: ['one', 'two'] }),
      },
      { match: '/api/v1/auth/step-up', method: 'POST', response: () => json({ ok: true }) },
      { match: '/api/v1/auth/logout-all', method: 'POST', response: () => json({ ok: true }) },
    ]);

    await expect(setupTotp()).resolves.toEqual({ secret: 'SECRET', otpauth_url: 'otpauth://x' });
    await expect(enableTotp('123456')).resolves.toEqual(['one', 'two']);
    await stepUp('password12', '654321');
    expect(lastCall(fetchMock).body).toEqual({
      password: 'password12',
      totp_code: '654321',
    });
    await expect(logoutAll()).resolves.toEqual({ ok: true });
  });

  it('PATCH профиля уходит на /users/@me и возвращает user', async () => {
    const fetchMock = installFetch([
      {
        match: '/api/v1/users/@me',
        method: 'PATCH',
        response: () => json({ user: { id: 'u', display_name: 'Новое' } }),
      },
    ]);

    await expect(updateProfile({ display_name: 'Новое' })).resolves.toMatchObject({
      display_name: 'Новое',
    });
    expect(lastCall(fetchMock).method).toBe('PATCH');
  });

  it('GET /users/@me/guilds разворачивает конверт {guilds}', async () => {
    installFetch([
      { match: '/api/v1/users/@me/guilds', response: () => json({ guilds: [{ id: 'g-1' }] }) },
    ]);

    await expect(fetchMyGuilds()).resolves.toEqual([{ id: 'g-1' }]);
  });

  it('каналы и участие в сервере используют id в пути', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/guilds/g-1/channels', response: () => json({ channels: [{ id: 'c-1' }] }) },
      { match: '/api/v1/guilds/g-1/join', method: 'POST', response: () => json({ ok: true }) },
      { match: '/api/v1/guilds/g-1/leave', method: 'POST', response: () => json({ ok: true }) },
    ]);

    await expect(fetchChannels('g-1')).resolves.toEqual([{ id: 'c-1' }]);
    await expect(joinGuild('g-1')).resolves.toEqual({ ok: true });
    await expect(leaveGuild('g-1')).resolves.toEqual({ ok: true });
    expect(lastCall(fetchMock).url).toContain('/api/v1/guilds/g-1/leave');
  });

  it('createChannel отправляет type и parent_id', async () => {
    const fetchMock = installFetch([
      {
        match: '/api/v1/guilds/g-1/channels',
        method: 'POST',
        response: () => json({ channel: { id: 'c-9' } }),
      },
    ]);

    await createChannel('g-1', { name: 'общий', type: 'text', parent_id: 'cat-1' });

    expect(lastCall(fetchMock).body).toEqual({
      name: 'общий',
      type: 'text',
      parent_id: 'cat-1',
    });
  });

  it('instance: конверты {instance}, {settings}, {entries} и лимит аудита', async () => {
    const fetchMock = installFetch([
      { match: '/api/v1/instance/settings', response: () => json({ settings: { motd: 'x' } }) },
      { match: '/api/v1/instance/audit', response: () => json({ entries: [{ id: 'a-1' }] }) },
      { match: '/api/v1/instance', response: () => json({ instance: { name: 'glchat' } }) },
    ]);

    await expect(fetchInstance()).resolves.toEqual({ name: 'glchat' });
    // Журнал отдаётся вместе с общим числом записей под фильтр (AGENT.md 7.18).
    await expect(fetchAudit({ limit: 50 })).resolves.toEqual({
      entries: [{ id: 'a-1' }],
      total: 1,
    });
    expect(recordedRequests(fetchMock).map((request) => request.url)).toContain(
      '/api/v1/instance/audit?limit=50',
    );
  });

  it('пробрасывает коды ошибок контракта (в том числе auth.guild_limit_reached)', async () => {
    installFetch([
      {
        match: '/api/v1/guilds',
        method: 'POST',
        response: () =>
          json({ error: { code: 'auth.guild_limit_reached', message: 'limit' } }, 403),
      },
    ]);

    const error = await import('@/api/guilds')
      .then(({ createGuild }) => createGuild('Много'))
      .catch((reason: unknown) => reason);

    expect(error).toBeInstanceOf(ApiError);
    expect((error as ApiError).code).toBe('auth.guild_limit_reached');
    expect((error as ApiError).status).toBe(403);
  });
});