/**
 * Basic smoke test to validate the integration test DB mock pattern.
 * Tests MISC-001 — Health check endpoint.
 */
import { describe, it, expect, vi, beforeAll, beforeEach, afterAll } from 'vitest';
import request from 'supertest';
import type { Application } from 'express';

// ─────────────────────────────────────────────────────────────────────────────
// Step 1: Create a bare in-memory DB instance via vi.hoisted() so it exists
//         before the mock factory below runs. Schema setup happens in beforeAll
//         (after mocks are registered, so config is mocked when migrations run).
// ─────────────────────────────────────────────────────────────────────────────
const { testDb, dbMock } = vi.hoisted(() => {
  const Database = require('better-sqlite3');
  const db = new Database(':memory:');
  db.exec('PRAGMA journal_mode = WAL');
  db.exec('PRAGMA foreign_keys = ON');
  db.exec('PRAGMA busy_timeout = 5000');

  const mock = {
    db,
    closeDb: () => {},
    reinitialize: () => {},
    getPlaceWithTags: (placeId: number) => {
      const place: any = db.prepare(`
        SELECT p.*, c.name as category_name, c.color as category_color, c.icon as category_icon
        FROM places p LEFT JOIN categories c ON p.category_id = c.id WHERE p.id = ?
      `).get(placeId);
      if (!place) return null;
      const tags = db.prepare(`SELECT t.* FROM tags t JOIN place_tags pt ON t.id = pt.tag_id WHERE pt.place_id = ?`).all(placeId);
      return { ...place, category: place.category_id ? { id: place.category_id, name: place.category_name, color: place.category_color, icon: place.category_icon } : null, tags };
    },
    canAccessTrip: (tripId: any, userId: number) =>
      db.prepare(`SELECT t.id, t.user_id FROM trips t LEFT JOIN trip_members m ON m.trip_id = t.id AND m.user_id = ? WHERE t.id = ? AND (t.user_id = ? OR m.user_id IS NOT NULL)`).get(userId, tripId, userId),
    isOwner: (tripId: any, userId: number) =>
      !!db.prepare('SELECT id FROM trips WHERE id = ? AND user_id = ?').get(tripId, userId),
  };

  return { testDb: db, dbMock: mock };
});

// ─────────────────────────────────────────────────────────────────────────────
// Step 2: Register mocks BEFORE app is imported (these are hoisted by Vitest)
// ─────────────────────────────────────────────────────────────────────────────
vi.mock('../../src/db/database', () => dbMock);

vi.mock('../../src/config', () => ({
  JWT_SECRET: 'test-jwt-secret-for-trek-testing-only',
  ENCRYPTION_KEY: 'a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6a7b8c9d0e1f2a3b4c5d6a7b8c9d0e1f2',
  updateJwtSecret: () => {},
}));

// ─────────────────────────────────────────────────────────────────────────────
// Step 3: Import app AFTER mocks (Vitest hoisting ensures mocks are ready first)
// ─────────────────────────────────────────────────────────────────────────────
import { createApp } from '../../src/app';
import { createTables } from '../../src/db/schema';
import { runMigrations } from '../../src/db/migrations';
import { resetTestDb } from '../helpers/test-db';
import { createUser } from '../helpers/factories';
import { authCookie } from '../helpers/auth';

const app: Application = createApp();

// Schema setup runs here — config is mocked so migrations work correctly
beforeAll(() => {
  createTables(testDb);
  runMigrations(testDb);
});

beforeEach(() => {
  resetTestDb(testDb);
});

afterAll(() => {
  testDb.close();
});

// ─────────────────────────────────────────────────────────────────────────────
// Tests
// ─────────────────────────────────────────────────────────────────────────────

describe('Health check', () => {
  it('MISC-001 — GET /api/health returns 200 with status ok', async () => {
    const res = await request(app).get('/api/health');
    expect(res.status).toBe(200);
    expect(res.body.status).toBe('ok');
  });
});

describe('Basic auth', () => {
  it('AUTH-014 — GET /api/auth/me without session returns 401', async () => {
    const res = await request(app).get('/api/auth/me');
    expect(res.status).toBe(401);
    expect(res.body.code).toBe('AUTH_REQUIRED');
  });

  it('AUTH-001 — POST /api/auth/login with valid credentials returns 200 + cookie', async () => {
    const { user, password } = createUser(testDb);
    const res = await request(app)
      .post('/api/auth/login')
      .send({ email: user.email, password });
    expect(res.status).toBe(200);
    expect(res.body.user).toMatchObject({ id: user.id, email: user.email });
    expect(res.headers['set-cookie']).toBeDefined();
    const cookies: string[] = Array.isArray(res.headers['set-cookie'])
      ? res.headers['set-cookie']
      : [res.headers['set-cookie']];
    expect(cookies.some((c: string) => c.includes('trek_session'))).toBe(true);
  });

  it('AUTH-014 — authenticated GET /api/auth/me returns user object', async () => {
    const { user } = createUser(testDb);
    const res = await request(app)
      .get('/api/auth/me')
      .set('Cookie', authCookie(user.id));
    expect(res.status).toBe(200);
    expect(res.body.user.id).toBe(user.id);
    expect(res.body.user.email).toBe(user.email);
  });
});