/**
 * Reservations integration tests.
 * Covers RESV-001 to RESV-007.
 */
import { describe, it, expect, vi, beforeAll, beforeEach, afterAll } from 'vitest';
import request from 'supertest';
import type { Application } from 'express';

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 };
});

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

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, createTrip, createDay, createReservation, addTripMember } from '../helpers/factories';
import { authCookie } from '../helpers/auth';
import { loginAttempts, mfaAttempts } from '../../src/routes/auth';

const app: Application = createApp();

beforeAll(() => {
  createTables(testDb);
  runMigrations(testDb);
});

beforeEach(() => {
  resetTestDb(testDb);
  loginAttempts.clear();
  mfaAttempts.clear();
});

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

// ─────────────────────────────────────────────────────────────────────────────
// Create reservation
// ─────────────────────────────────────────────────────────────────────────────

describe('Create reservation', () => {
  it('RESV-001 — POST /api/trips/:tripId/reservations creates a reservation', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);

    const res = await request(app)
      .post(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id))
      .send({ title: 'Hotel Check-in', type: 'hotel' });
    expect(res.status).toBe(201);
    expect(res.body.reservation.title).toBe('Hotel Check-in');
    expect(res.body.reservation.type).toBe('hotel');
  });

  it('RESV-001 — POST without title returns 400', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);

    const res = await request(app)
      .post(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id))
      .send({ type: 'hotel' });
    expect(res.status).toBe(400);
  });

  it('RESV-001 — non-member cannot create reservation', async () => {
    const { user: owner } = createUser(testDb);
    const { user: other } = createUser(testDb);
    const trip = createTrip(testDb, owner.id);

    const res = await request(app)
      .post(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(other.id))
      .send({ title: 'Hotel', type: 'hotel' });
    expect(res.status).toBe(404);
  });

  it('RESV-002 — POST with create_accommodation creates an accommodation record', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const day = createDay(testDb, trip.id, { date: '2025-06-01' });

    const res = await request(app)
      .post(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id))
      .send({ title: 'Grand Hotel', type: 'hotel', day_id: day.id, create_accommodation: true });
    expect(res.status).toBe(201);
    expect(res.body.reservation).toBeDefined();
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// List reservations
// ─────────────────────────────────────────────────────────────────────────────

describe('List reservations', () => {
  it('RESV-003 — GET /api/trips/:tripId/reservations returns all reservations', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    createReservation(testDb, trip.id, { title: 'Flight Out', type: 'flight' });
    createReservation(testDb, trip.id, { title: 'Hotel Stay', type: 'hotel' });

    const res = await request(app)
      .get(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id));
    expect(res.status).toBe(200);
    expect(res.body.reservations).toHaveLength(2);
  });

  it('RESV-003 — returns empty array when no reservations exist', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);

    const res = await request(app)
      .get(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id));
    expect(res.status).toBe(200);
    expect(res.body.reservations).toHaveLength(0);
  });

  it('RESV-007 — non-member cannot list reservations', async () => {
    const { user: owner } = createUser(testDb);
    const { user: other } = createUser(testDb);
    const trip = createTrip(testDb, owner.id);

    const res = await request(app)
      .get(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(other.id));
    expect(res.status).toBe(404);
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// Update reservation
// ─────────────────────────────────────────────────────────────────────────────

describe('Update reservation', () => {
  it('RESV-004 — PUT updates reservation fields', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const resv = createReservation(testDb, trip.id, { title: 'Old Flight', type: 'flight' });

    const res = await request(app)
      .put(`/api/trips/${trip.id}/reservations/${resv.id}`)
      .set('Cookie', authCookie(user.id))
      .send({ title: 'New Flight', confirmation_number: 'ABC123' });
    expect(res.status).toBe(200);
    expect(res.body.reservation.title).toBe('New Flight');
    expect(res.body.reservation.confirmation_number).toBe('ABC123');
  });

  it('RESV-004 — PUT on non-existent reservation returns 404', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);

    const res = await request(app)
      .put(`/api/trips/${trip.id}/reservations/99999`)
      .set('Cookie', authCookie(user.id))
      .send({ title: 'Updated' });
    expect(res.status).toBe(404);
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// Delete reservation
// ─────────────────────────────────────────────────────────────────────────────

describe('Delete reservation', () => {
  it('RESV-005 — DELETE removes reservation', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const resv = createReservation(testDb, trip.id, { title: 'Flight', type: 'flight' });

    const del = await request(app)
      .delete(`/api/trips/${trip.id}/reservations/${resv.id}`)
      .set('Cookie', authCookie(user.id));
    expect(del.status).toBe(200);
    expect(del.body.success).toBe(true);

    const list = await request(app)
      .get(`/api/trips/${trip.id}/reservations`)
      .set('Cookie', authCookie(user.id));
    expect(list.body.reservations).toHaveLength(0);
  });

  it('RESV-005 — DELETE non-existent reservation returns 404', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);

    const res = await request(app)
      .delete(`/api/trips/${trip.id}/reservations/99999`)
      .set('Cookie', authCookie(user.id));
    expect(res.status).toBe(404);
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// Batch update positions
// ─────────────────────────────────────────────────────────────────────────────

describe('Batch update positions', () => {
  it('RESV-006 — PUT /positions updates reservation sort order', async () => {
    const { user } = createUser(testDb);
    const trip = createTrip(testDb, user.id);
    const r1 = createReservation(testDb, trip.id, { title: 'First', type: 'flight' });
    const r2 = createReservation(testDb, trip.id, { title: 'Second', type: 'hotel' });

    const res = await request(app)
      .put(`/api/trips/${trip.id}/reservations/positions`)
      .set('Cookie', authCookie(user.id))
      .send({ positions: [{ id: r2.id, position: 0 }, { id: r1.id, position: 1 }] });
    expect(res.status).toBe(200);
    expect(res.body.success).toBe(true);
  });
});