/**
 * Trips module e2e — exercises the migrated /api/trips aggregate-root endpoints
 * through the real JwtAuthGuard against a real migrated-and-seeded temp SQLite
 * db (createSnapshotTestDb(), Task 9 fix wave M6 — this used to hand-roll
 * about two dozen CREATE TABLEs, a second hand-maintained schema copy that
 * diverged from the real migrated one in ways no `SELECT *`/`toMatchObject`
 * read could see: the hand-rolled `journey_entries` table had no
 * `author_id`/`entry_date` NOT NULL columns and no FK to a real `journeys`
 * row, so the delete-trip test's inserts would have failed loudly against
 * the real schema — see that test's setup below for the fix). TripsService
 * and every domain `bundle()` touches (days, places, packing, files,
 * reservations, todos) now run their real SQL over the same migrated
 * connection; trip access resolves through `TripsRepository.findAccessible`
 * via the real request-scoped `EntityManager` `createTestMikroOrmModule`
 * wires in, not a hand-rolled `canAccessTrip`/`getPlaceWithTags` mock (the
 * legacy overrides this file used to export from `db/database.ts` — deleted
 * there since Plan 3c Task 0b; a stale mock here would silently do nothing,
 * not fail loudly, which is worse than removing it — the same reasoning
 * `days.e2e.test.ts`'s identical comment gives). Only the permission check,
 * `BudgetService` (the budget fold's own container spy, unrelated to this
 * conversion) stay mocked.
 */
import { db } from '../../src/db/database';
import { AuditLog } from '../../src/db/entities/AuditLog.entity';
import { BudgetItemMembers } from '../../src/db/entities/BudgetItemMembers.entity';
import { Days } from '../../src/db/entities/Days.entity';
import { JourneyEntries } from '../../src/db/entities/JourneyEntries.entity';
import { Journeys } from '../../src/db/entities/Journeys.entity';
import { Settings } from '../../src/db/entities/Settings.entity';
import { TripMembers } from '../../src/db/entities/TripMembers.entity';
import { Trips } from '../../src/db/entities/Trips.entity';
import { Users } from '../../src/db/entities/Users.entity';
import { VacayEntries } from '../../src/db/entities/VacayEntries.entity';
import { VacayPlans } from '../../src/db/entities/VacayPlans.entity';
// TripsService itself is real since the trip fold — no tripService mock; the
// real migrated trips/trip_members/days tables serve its SQL.
// bundle()'s days + accommodations now run DaysService's real SQL (DI-injected,
// no mock). bundle()'s places now run PlacesService's real SQL (DI-injected
// since the place fold, no mock). bundle()'s budget items come from the
// DI-injected BudgetService since the budget fold — stubbed via a container
// spy in beforeAll (unrelated to this file's schema conversion).

import { GUEST_HAS_PAYMENTS } from '../../src/nest/budget/budget-departure.helpers';
import { BudgetService } from '../../src/nest/budget/budget.service';
import { TrekExceptionFilter } from '../../src/nest/common/trek-exception.filter';
import { withRequestContext } from '../../src/nest/database/request-context';
import { PermissionsService } from '../../src/nest/permissions/permissions.service';
import { RealtimeModule } from '../../src/nest/realtime/realtime.module';
import { RealtimeService } from '../../src/nest/realtime/realtime.service';
import { TripsModule } from '../../src/nest/trips/trips.module';
import { makeDayAssignment } from '../helpers/factories/itinerary';
import { makePlace } from '../helpers/factories/places';
import { countRows, deleteRows, findRow, findRows, insertRow, insertRows } from '../helpers/factories/rows';
import { setUserSetting } from '../helpers/factories/settings';
import { makeDay } from '../helpers/factories/trips';
import { makeUser } from '../helpers/factories/users';
import { createTestMikroOrmModule, createTestOrm, type TestOrm } from '../helpers/test-orm';
import { TestUnitOfWorkModule } from '../helpers/test-uow';
import { sessionCookie } from './harness';
import { MikroORM } from '@mikro-orm/core';
import { Test } from '@nestjs/testing';
import { MAX_TRIP_DAYS } from '@trek/shared';

import cookieParser from 'cookie-parser';
import type { Server } from 'http';
import request from 'supertest';
import { describe, it, expect, beforeAll, afterAll, beforeEach, vi, type MockInstance } from 'vitest';

vi.mock('../../src/db/database', async () => {
  const { createSnapshotTestDb, buildDbMock } = await import('../helpers/db-mock');
  return buildDbMock(createSnapshotTestDb());
});
// The audit domain is DI-native now: writeAudit runs for real against the temp
// db's audit_log table; only the file logger is silenced.
vi.mock('../../src/nest/audit/audit-log.logger', () => ({
  LOG_LEVEL: 'error',
  logInfo: vi.fn(),
  logDebug: vi.fn(),
  logError: vi.fn(),
  logWarn: vi.fn(),
}));
vi.mock('../../src/nest/common/demo', () => ({ isDemoEmail: vi.fn(() => false) }));

// Since the permissions DI migration, the check is a spy on the container's
// PermissionsService singleton (created in beforeAll, after build()).
let checkPermission: MockInstance;

let orm: TestOrm;

/** The trip's day ids in day order. */
async function dayIds(tripId: number): Promise<number[]> {
  return (await findRows(orm, Days, { trip: tripId }, { day_number: 'asc' })).map((d) => d.id);
}

describe('Trips e2e (real auth guard + temp SQLite)', () => {
  let server: Server;
  let app: Awaited<ReturnType<typeof build>>;

  async function build() {
    const moduleRef = await Test.createTestingModule({
      imports: [
        await TestUnitOfWorkModule.forRoot(db),
        await createTestMikroOrmModule(db),
        RealtimeModule,
        TripsModule,
      ],
    }).compile();
    const nest = moduleRef.createNestApplication();
    nest.use(cookieParser());
    nest.useGlobalFilters(new TrekExceptionFilter());
    await nest.init();
    return nest;
  }

  beforeAll(async () => {
    // harness.ts's seedUser() omits password_hash, which the real migrated
    // schema requires NOT NULL (days.e2e.test.ts/addons.e2e.test.ts hit the
    // same thing) — a raw insert here instead.
    orm = await createTestOrm(db);
    await makeUser(orm, { id: 1, username: 'e2e-user', email: 'e2e@example.test' });
    app = await build();
    checkPermission = vi.spyOn(app.get(PermissionsService), 'checkPermission');
    vi.spyOn(app.get(BudgetService), 'listBudgetItems').mockResolvedValue([]);
    vi.spyOn(app.get(BudgetService), 'prepareCurrencyRebase').mockResolvedValue(null);
    server = app.getHttpServer();
  });

  beforeEach(async () => {
    await deleteRows(orm, Trips);
    await deleteRows(orm, TripMembers);
    await deleteRows(orm, Days);
    await deleteRows(orm, AuditLog);
    await deleteRows(orm, Settings);
    // 0b review L2 / security review F-B7: dead mock scaffolding — see
    // budget.e2e.test.ts's identical comment.
    checkPermission.mockReturnValue(true);
  });

  afterAll(async () => {
    await app.close();
    await orm.close();
  });

  const seedTrip = (title = 'T', userId = 1) => insertRow(orm, Trips, { user: userId, title });

  it('401 without a cookie', async () => {
    expect((await request(server).get('/api/trips')).status).toBe(401);
  });

  it('200 list (real TRIP_SELECT: is_owner + counts)', async () => {
    const tripId = await seedTrip('T');
    const res = await request(server).get('/api/trips').set('Cookie', sessionCookie(1));
    expect(res.status).toBe(200);
    expect(res.body.trips).toHaveLength(1);
    expect(res.body.trips[0]).toMatchObject({
      id: tripId,
      title: 'T',
      is_owner: 1,
      day_count: 0,
      place_count: 0,
      shared_count: 0,
    });
  });

  it('201 create (real insert + day generation), 403 without permission', async () => {
    const ok = await request(server).post('/api/trips').set('Cookie', sessionCookie(1)).send({ title: 'T' });
    expect(ok.status).toBe(201);
    // The dateless create seeds the default 7 placeholder days.
    expect(ok.body.trip).toMatchObject({ title: 'T', currency: 'EUR', day_count: 7, is_owner: 1 });
    const dayRows = await countRows(orm, Days, { trip: ok.body.trip.id });
    expect(dayRows).toBe(7);
    // The DI-native AuditService wrote the real row (audit_log DDL above).
    const audit = await findRow(orm, AuditLog, { action: 'trip.create' });
    expect({ user_id: audit?.user_id }).toEqual({ user_id: 1 });
    checkPermission.mockReturnValue(false);
    const forbidden = await request(server).post('/api/trips').set('Cookie', sessionCookie(1)).send({ title: 'T' });
    expect(forbidden.status).toBe(403);
  });

  it('201 create without a currency takes the display currency from the settings', async () => {
    await setUserSetting(orm, 1, 'default_currency', JSON.stringify('USD'));
    const preferred = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Road trip' });
    expect(preferred.status).toBe(201);
    expect(preferred.body.trip).toMatchObject({ title: 'Road trip', currency: 'USD' });
    const explicit = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Tokyo', currency: 'JPY' });
    expect(explicit.status).toBe(201);
    expect(explicit.body.trip).toMatchObject({ title: 'Tokyo', currency: 'JPY' });
  });

  it('201 create keeps every day of a trip longer than a year (#2403)', async () => {
    // 2025-01-26 .. 2026-01-28 is 368 days; the day list used to stop at 365.
    const res = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Gap year', start_date: '2025-01-26', end_date: '2026-01-28' });
    expect(res.status).toBe(201);
    expect(res.body.trip).toMatchObject({ start_date: '2025-01-26', end_date: '2026-01-28', day_count: 368 });
    const [last] = await findRows(orm, Days, { trip: res.body.trip.id }, { day_number: 'desc' });
    expect({ day_number: last.day_number, date: last.date }).toEqual({ day_number: 368, date: '2026-01-28' });
  });

  it('400 on a date range past MAX_TRIP_DAYS, for create and update alike', async () => {
    const tooLong = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Decade', start_date: '2026-01-01', end_date: '2036-01-01' });
    expect(tooLong.status).toBe(400);
    expect(tooLong.body).toEqual({ error: `A trip can span at most ${MAX_TRIP_DAYS} days` });
    expect(await countRows(orm, Trips)).toBe(0);

    const week = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Week', start_date: '2026-07-01', end_date: '2026-07-07' });
    const stretched = await request(server)
      .put(`/api/trips/${week.body.trip.id}`)
      .set('Cookie', sessionCookie(1))
      .send({ end_date: '2036-07-01' });
    expect(stretched.status).toBe(400);
    expect(stretched.body).toEqual({ error: `A trip can span at most ${MAX_TRIP_DAYS} days` });
    expect((await findRow(orm, Trips, { id: week.body.trip.id }))!.end_date).toBe('2026-07-07');
  });

  it('200 update with an earlier end drops the last days, and the answer stays { trip }', async () => {
    const week = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Week', start_date: '2026-07-01', end_date: '2026-07-07' });
    const kept = (await dayIds(week.body.trip.id)).slice(0, 5);
    const res = await request(server)
      .put(`/api/trips/${week.body.trip.id}`)
      .set('Cookie', sessionCookie(1))
      .send({ end_date: '2026-07-05' });
    expect(res.status).toBe(200);
    expect(Object.keys(res.body)).toEqual(['trip']);
    expect(res.body.trip).toMatchObject({ start_date: '2026-07-01', end_date: '2026-07-05', day_count: 5 });
    expect(await dayIds(week.body.trip.id)).toEqual(kept);
  });

  it('200 update with a later start moves the leave days of the owner along, off the blocked weekend, and tells the plan (#2604)', async () => {
    // 2030-11-25 is a Monday; the plan blocks Saturday and Sunday by default.
    const trip = await request(server)
      .post('/api/trips')
      .set('Cookie', sessionCookie(1))
      .send({ title: 'Leave', start_date: '2030-11-25', end_date: '2030-11-30' });
    const shift = (start_date: string, end_date: string) =>
      request(server)
        .put(`/api/trips/${trip.body.trip.id}`)
        .set('Cookie', sessionCookie(1))
        .send({ start_date, end_date });

    // No vacay plan yet: moving the trip creates none.
    expect((await shift('2030-11-26', '2030-12-01')).status).toBe(200);
    expect(await countRows(orm, VacayPlans, { owner: 1 })).toBe(0);
    expect((await shift('2030-11-25', '2030-11-30')).status).toBe(200);

    const planId = await insertRow(orm, VacayPlans, { owner: 1 });
    const week = ['2030-11-25', '2030-11-26', '2030-11-27', '2030-11-28', '2030-11-29'];
    await insertRows(
      orm,
      VacayEntries,
      week.map((date) => ({ plan: planId, user: 1, date, note: '' })),
    );
    const broadcast = vi.spyOn(app.get(RealtimeService), 'broadcastToUser');

    expect((await shift('2030-11-27', '2030-12-02')).status).toBe(200);

    const dates = (await findRows(orm, VacayEntries, { plan: planId }, { date: 'asc' })).map((e) => e.date);
    expect(dates).toEqual(['2030-11-27', '2030-11-28', '2030-11-29']);
    expect(broadcast).toHaveBeenCalledWith(1, { type: 'vacay:update' }, undefined);
    broadcast.mockRestore();
    await deleteRows(orm, VacayPlans, { id: planId });
  });

  it('404 on a missing trip', async () => {
    const res = await request(server).get('/api/trips/77').set('Cookie', sessionCookie(1));
    expect(res.status).toBe(404);
    expect(res.body).toEqual({ error: 'Trip not found' });
  });

  describe('GET /active (startup destination)', () => {
    const seedDated = (title: string, start: string, end: string) =>
      insertRow(orm, Trips, { user: 1, title, start_date: start, end_date: end });

    it('401 without a cookie', async () => {
      expect((await request(server).get('/api/trips/active')).status).toBe(401);
    });

    // The literal route sits above @Get(':id'); if it ever slips below, this
    // asks for a trip with the id "active" and comes back 404 instead.
    it('resolves as its own route rather than as /api/trips/:id', async () => {
      const running = await seedDated('Running', '2000-01-01', '2999-12-31');
      const res = await request(server).get('/api/trips/active').set('Cookie', sessionCookie(1));
      expect(res.status).toBe(200);
      expect(res.body).toEqual({
        trip: { id: running, title: 'Running', start_date: '2000-01-01', end_date: '2999-12-31' },
      });
    });

    it('answers { trip: null } when the user has no trip at all', async () => {
      const res = await request(server).get('/api/trips/active').set('Cookie', sessionCookie(1));
      expect(res.status).toBe(200);
      expect(res.body).toEqual({ trip: null });
    });

    it('carries no wide trip columns — it is read on first paint', async () => {
      await seedDated('Running', '2000-01-01', '2999-12-31');
      const res = await request(server).get('/api/trips/active').set('Cookie', sessionCookie(1));
      expect(Object.keys(res.body.trip).sort()).toEqual(['end_date', 'id', 'start_date', 'title']);
    });
  });

  // Real CalendarService against the temp db: a title carrying U+3000 slipped
  // through the old \s keep-class into setHeader and 500'd the export (#2165).
  it('200 export.ics with a header-safe filename for a title full of ideographic whitespace', async () => {
    const tripId = await insertRow(orm, Trips, {
      user: 1,
      title: '沖縄　4泊5日',
      start_date: '2026-05-01',
      end_date: '2026-05-05',
    });
    const res = await request(server).get(`/api/trips/${tripId}/export.ics`).set('Cookie', sessionCookie(1));
    expect(res.status).toBe(200);
    expect(res.headers['content-type']).toContain('text/calendar');
    expect(res.headers['content-disposition']).toBe('attachment; filename="___4_5_.ics"');
    expect(res.text).toContain('BEGIN:VCALENDAR');
  });

  // A stop with a start time and no end ends after the place's duration, so a
  // 20 minute stop does not turn into the client's default hour (#2641).
  it('200 export.ics ends a stop without an end time after its duration', async () => {
    const tripId = await insertRow(orm, Trips, {
      user: 1,
      title: 'Short Stops',
      start_date: '2026-11-02',
      end_date: '2026-11-02',
    });
    const day = await makeDay(orm, tripId, { date: '2026-11-02' });
    const place = await makePlace(orm, tripId, {
      name: 'Cafe',
      lat: 52.52,
      lng: 13.405,
      place_time: '18:00',
      duration_minutes: 20,
    });
    await makeDayAssignment(orm, day.id, place.id);

    const res = await request(server).get(`/api/trips/${tripId}/export.ics`).set('Cookie', sessionCookie(1));

    expect(res.status).toBe(200);
    expect(res.text).toContain(
      'DTSTART;TZID=Europe/Berlin:20261102T180000\r\nDTEND;TZID=Europe/Berlin:20261102T182000\r\n',
    );
  });

  it('200 bundle for an accessible trip (real member list)', async () => {
    const tripId = await seedTrip('B');
    const res = await request(server).get(`/api/trips/${tripId}/bundle`).set('Cookie', sessionCookie(1));
    expect(res.status).toBe(200);
    expect(res.body).toMatchObject({ trip: { id: tripId }, days: [], members: [{ id: 1, role: 'owner' }] });
  });

  it('200 delete cleans up synced journey entries (real SQL)', async () => {
    const tripId = await seedTrip('D');
    // Task 9 fix wave (M6) finding: the hand-rolled DDL this test used to run
    // against had no NOT NULL/FK constraints on `journey_entries` at all
    // (no `author_id`, no `entry_date`, no FK to a real `journeys` row) — a
    // bare `INSERT INTO journey_entries (journey_id, source_trip_id, type)
    // VALUES (1, ?, 'skeleton')` passed silently there. The real migrated
    // schema requires `journey_id` to reference a real `journeys` row (NOT
    // NULL FK) plus `author_id`/`entry_date`/`created_at`/`updated_at` NOT
    // NULL — a real journey row (and those columns) are seeded here so the
    // insert that used to pass for the wrong reason now passes for the real
    // one. The assertions below are untouched, character-for-character.
    const journeyId = await insertRow(orm, Journeys, { user: 1, title: 'J', created_at: 0, updated_at: 0 });
    await insertRow(orm, JourneyEntries, {
      journey: journeyId,
      sourceTrip: tripId,
      author: 1,
      type: 'skeleton',
      entry_date: '2026-01-01',
      created_at: 0,
      updated_at: 0,
    });
    const filledId = await insertRow(orm, JourneyEntries, {
      journey: journeyId,
      sourceTrip: tripId,
      author: 1,
      type: 'story',
      entry_date: '2026-01-01',
      created_at: 0,
      updated_at: 0,
    });
    const res = await request(server).delete(`/api/trips/${tripId}`).set('Cookie', sessionCookie(1));
    expect(res.status).toBe(200);
    expect(res.body).toEqual({ success: true });
    expect(await findRow(orm, Trips, { id: tripId })).toBeNull();
    expect(await findRow(orm, JourneyEntries, { type: 'skeleton' })).toBeNull();
    expect((await findRow(orm, JourneyEntries, { id: filledId }))!.source_trip_id).toBeNull();
  });

  it('DELETE guest: 409 while the guest paid an expense, then 200 with their share handed on (#2604)', async () => {
    const tripId = await seedTrip('T');
    const budget = app.get(BudgetService);
    const inContext = <T>(fn: () => Promise<T>) => withRequestContext(app.get(MikroORM), fn);
    const created = await request(server)
      .post(`/api/trips/${tripId}/guests`)
      .set('Cookie', sessionCookie(1))
      .send({ name: 'FIX1012 G' });
    expect(created.status).toBe(201);
    const guestId = created.body.member.id as number;
    const paid = await inContext(() =>
      budget.createBudgetItem(tripId, {
        name: 'Museum',
        payers: [{ user_id: guestId, amount: 60 }],
        member_ids: [1, guestId],
      }),
    );
    const shared = await inContext(() =>
      budget.createBudgetItem(tripId, {
        name: 'Snacks',
        payers: [{ user_id: 1, amount: 90 }],
        members: [
          { user_id: 1, amount: 50 },
          { user_id: guestId, amount: 40 },
        ],
      }),
    );

    const refused = await request(server)
      .delete(`/api/trips/${tripId}/guests/${guestId}`)
      .set('Cookie', sessionCookie(1));
    expect(refused.status).toBe(409);
    expect(refused.body).toEqual({ error: GUEST_HAS_PAYMENTS });
    expect(await findRow(orm, Users, { id: guestId })).not.toBeNull();

    // Once the payer is changed the guest goes, and the owner carries the whole snack bill.
    await inContext(() => budget.setItemPayers(paid.id, tripId, [{ user_id: 1, amount: 60 }]));
    const ok = await request(server).delete(`/api/trips/${tripId}/guests/${guestId}`).set('Cookie', sessionCookie(1));
    expect(ok.status).toBe(200);
    expect(await findRow(orm, Users, { id: guestId })).toBeNull();
    expect(
      (await findRows(orm, BudgetItemMembers, { budgetItem: shared.id })).map((m) => [m.user_id, m.amount]),
    ).toEqual([[1, 90]]);
    const { balances } = await inContext(() => budget.calculateSettlement(tripId));
    expect(balances.reduce((sum, b) => sum + Math.round(b.balance * 100), 0)).toBe(0);
  });
});