/**
 * Unit tests for the DI-native TripInviteService — TRIP-INVITE-001..006
 * (moved 1:1 from the legacy tests/unit/services/tripInviteService.test.ts).
 * Per-trip invite links (#1143): one rotating token, optional expiry, resolve.
 * Uses a real in-memory SQLite DB so SQL logic is exercised faithfully.
 */
import { describe, it, expect, vi, beforeAll, beforeEach, afterAll } from 'vitest';

// ── DB setup ──────────────────────────────────────────────────────────────────

vi.mock('../../../src/db/database', async () => {
  const { createSnapshotTestDb } = await import('../../helpers/db-mock');
  const db = createSnapshotTestDb();
  return {
    db,
    closeDb: () => {},
    reinitialize: () => {},
    getPlaceWithTags: () => null,
    canAccessTrip: () => undefined,
    isOwner: () => false,
  };
});
vi.mock('../../../src/config', () => ({
  JWT_SECRET: 'test-secret',
  ENCRYPTION_KEY: 'a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6a7b8c9d0e1f2a3b4c5d6a7b8c9d0e1f2',
  updateJwtSecret: () => {},
}));

import { db as testDb } from '../../../src/db/database';
import { resetTestDb } from '../../helpers/test-db';
import { createUser, createTrip } from '../../helpers/factories';
import { PermissionsService } from '../../../src/nest/permissions/permissions.service';
import { TripMembershipService } from '../../../src/nest/trip-membership/trip-membership.service';
import { TripInviteService } from '../../../src/nest/trip-invite/trip-invite.service';
import { createTestUnitOfWork, createTestAppSettingsRepo, createTestTripsRepo, createTestTripMembersRepo, createTestTripInviteTokensRepo } from '../../helpers/test-uow';
import { sharedTestOrm } from '../../helpers/test-uow';
import { countRows, updateRows } from '../../helpers/factories/rows';
import { TripInviteTokens } from '../../../src/db/entities/TripInviteTokens.entity';

let svc: TripInviteService;
beforeAll(async () => {
  const uow = await createTestUnitOfWork(testDb);
  svc = new TripInviteService(
    // Plan 4 Task 2 — TripInviteService's own canAccessTrip delegate is now
    // TripsRepository.findAccessible, in the same constructor slot.
    await createTestTripsRepo(testDb),
    new PermissionsService(await createTestAppSettingsRepo(testDb), uow),
    new TripMembershipService(await createTestTripsRepo(testDb), await createTestTripMembersRepo(testDb)),
    uow,
    await createTestTripInviteTokensRepo(testDb),
  );
});

beforeEach(() => resetTestDb(testDb));
afterAll(() => testDb.close());

function setup() {
  const { user: owner } = createUser(testDb);
  const trip = createTrip(testDb, owner.id);
  return { owner, trip };
}

describe('TripInviteService', () => {
  it('TRIP-INVITE-001: no link exists initially', async () => {
    const { trip } = setup();
    expect(await svc.get(trip.id)).toBeNull();
  });

  it('TRIP-INVITE-002: create returns a token and get reads it back', async () => {
    const { owner, trip } = setup();
    const info = await svc.createOrRotate(trip.id, owner.id);
    expect(info.token).toMatch(/^[A-Za-z0-9_-]{20,}$/);
    expect((await svc.get(trip.id))?.token).toBe(info.token);
  });

  it('TRIP-INVITE-003: rotating replaces the token and keeps a single row', async () => {
    const { owner, trip } = setup();
    const first = await svc.createOrRotate(trip.id, owner.id);
    const second = await svc.createOrRotate(trip.id, owner.id);
    expect(second.token).not.toBe(first.token);
    const count = await countRows(await sharedTestOrm(testDb), TripInviteTokens, { trip: trip.id });
    expect(count).toBe(1);
    // The old token no longer resolves.
    expect(await svc.resolve(first.token)).toBeNull();
  });

  it('TRIP-INVITE-004: resolve returns the trip for a valid token', async () => {
    const { owner, trip } = setup();
    const info = await svc.createOrRotate(trip.id, owner.id);
    expect(await svc.resolve(info.token)).toEqual({ trip_id: trip.id, title: trip.title });
  });

  it('TRIP-INVITE-005: an expired token does not resolve (ISO expiry, incl. same-day)', async () => {
    const { owner, trip } = setup();
    const info = await svc.createOrRotate(trip.id, owner.id);
    // Use the exact ISO-8601 format the service writes, one hour in the past —
    // this catches the lexicographic-SQL-comparison bug where a same-UTC-day
    // expiry would otherwise still resolve.
    await updateRows(await sharedTestOrm(testDb), TripInviteTokens, { trip: trip.id }, { expires_at: new Date(Date.now() - 3600_000).toISOString() });
    expect(await svc.resolve(info.token)).toBeNull();
  });

  it('TRIP-INVITE-005b: a not-yet-expired token still resolves', async () => {
    const { owner, trip } = setup();
    const info = await svc.createOrRotate(trip.id, owner.id);
    await updateRows(await sharedTestOrm(testDb), TripInviteTokens, { trip: trip.id }, { expires_at: new Date(Date.now() + 3600_000).toISOString() });
    expect(await svc.resolve(info.token)).toEqual({ trip_id: trip.id, title: trip.title });
  });

  it('TRIP-INVITE-006: delete removes the link', async () => {
    const { owner, trip } = setup();
    const info = await svc.createOrRotate(trip.id, owner.id);
    await svc.remove(trip.id);
    expect(await svc.get(trip.id)).toBeNull();
    expect(await svc.resolve(info.token)).toBeNull();
  });

  it('TRIP-INVITE-007: an expiry in days is written as an ISO timestamp; non-positive means none', async () => {
    const { owner, trip } = setup();
    const bounded = await svc.createOrRotate(trip.id, owner.id, 7);
    const expires = new Date(bounded.expires_at!).getTime();
    expect(expires).toBeGreaterThan(Date.now() + 6 * 86400000);
    expect(expires).toBeLessThan(Date.now() + 8 * 86400000);
    expect((await svc.createOrRotate(trip.id, owner.id, 0)).expires_at).toBeNull();
    expect((await svc.createOrRotate(trip.id, owner.id, -3)).expires_at).toBeNull();
  });
});