/**
 * System Notices API integration tests.
 * Covers GET /api/system-notices/active and POST /api/system-notices/:id/dismiss.
 */
import { ADDON_IDS } from '../../src/addons';
import { buildApp } from '../../src/bootstrap';
import { db as testDb } from '../../src/db/database';
import { Addons } from '../../src/db/entities/Addons.entity';
import { UserNoticeDismissals } from '../../src/db/entities/UserNoticeDismissals.entity';
import { Users } from '../../src/db/entities/Users.entity';
import { SYSTEM_NOTICES } from '../../src/systemNotices/registry';
import { getCurrentAppVersion } from '../../src/systemNotices/service';
import type { SystemNotice } from '../../src/systemNotices/types';
import { authCookie } from '../helpers/auth';
import { createUser, createAdmin } from '../helpers/factories';
import type { FactoryOrm } from '../helpers/factories/context';
import { insertRow, updateRows } from '../helpers/factories/rows';
import { setAppSetting } from '../helpers/factories/settings';
import { resetTestDb } from '../helpers/test-db';
import { MikroORM } from '@mikro-orm/core';
import type { INestApplication } from '@nestjs/common';

import type { Application } from 'express';
import request from 'supertest';
import { describe, it, expect, vi, beforeAll, beforeEach, afterAll, afterEach } from 'vitest';

// ─────────────────────────────────────────────────────────────────────────────
// Bare in-memory DB — schema applied in beforeAll after mocks register
// ─────────────────────────────────────────────────────────────────────────────
vi.mock('../../src/db/database', async () => {
  const { createSnapshotTestDb, buildDbMock } = await import('../helpers/db-mock');
  return buildDbMock(createSnapshotTestDb());
});

let nestApp: INestApplication;
let app: Application;
let orm: FactoryOrm;

// Test notice injected into the registry for notice-specific tests
const TEST_NOTICE: SystemNotice = {
  id: 'test-first-login-notice',
  display: 'modal',
  severity: 'info',
  titleKey: 'system_notice.test_first_login_notice.title',
  bodyKey: 'system_notice.test_first_login_notice.body',
  dismissible: true,
  conditions: [{ kind: 'firstLogin' }],
  publishedAt: '2026-01-01T00:00:00Z',
  priority: 0,
};

// Test notice gated on an addon, so the addonFlags lookup in getActiveNoticesFor
// (built once per call from every addonEnabled condition in SYSTEM_NOTICES) is
// exercised for both the enabled and the disabled case.
const TEST_NOTICE_ADDON: SystemNotice = {
  id: 'test-addon-notice',
  display: 'modal',
  severity: 'info',
  titleKey: 'system_notice.test_addon_notice.title',
  bodyKey: 'system_notice.test_addon_notice.body',
  dismissible: true,
  conditions: [{ kind: 'addonEnabled', addonId: ADDON_IDS.JOURNEY }],
  publishedAt: '2026-01-01T00:00:00Z',
  priority: 0,
};

beforeAll(async () => {
  nestApp = await buildApp();
  app = nestApp.getHttpAdapter().getInstance();
  orm = nestApp.get(MikroORM);
});

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

afterAll(async () => {
  await nestApp.close();
  testDb.close();
});

// ─────────────────────────────────────────────────────────────────────────────
// GET /api/system-notices/active
// ─────────────────────────────────────────────────────────────────────────────

describe('GET /api/system-notices/active', () => {
  it('returns 401 without auth', async () => {
    const res = await request(app).get('/api/system-notices/active');
    expect(res.status).toBe(401);
  });

  it('returns no login/version-gated notices for an established user', async () => {
    const { user } = createUser(testDb);
    // login_count > 1 means firstLogin does not match; first_seen_version >= 3.0.0 means
    // existingUserBeforeVersion('3.0.0') does not match either. Notices that gate on
    // nothing but the install being self-hosted still apply, and which ones those are
    // changes every release (the thank-you modal handed over to the release notes at 4.0.0).
    // Read the set out of the registry rather than naming them, or this ages out again.
    await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });
    const alwaysOn = new Set(
      SYSTEM_NOTICES.filter((n) => (n.conditions ?? []).every((c) => c.kind === 'managed')).map((n) => n.id),
    );
    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
    expect(res.status).toBe(200);
    expect(res.body.filter((n: { id: string }) => !alwaysOn.has(n.id))).toEqual([]);
  });

  it('returns firstLogin notice for user with login_count <= 1', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      // Set login_count to 1 (first login)
      await updateRows(orm, Users, { id: user.id }, { login_count: 1 });

      const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(res.status).toBe(200);
      // The always-on thank-you notice may also be present, so just assert TEST_NOTICE is there
      const testNotice = res.body.find((n: { id: string }) => n.id === TEST_NOTICE.id);
      expect(testNotice).toBeDefined();
      // DTO should not expose conditions, publishedAt, minVersion, maxVersion, priority
      expect(testNotice.conditions).toBeUndefined();
      expect(testNotice.publishedAt).toBeUndefined();
      expect(testNotice.minVersion).toBeUndefined();
      expect(testNotice.maxVersion).toBeUndefined();
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  it('an addonEnabled-gated notice appears only while the addon is on', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE_ADDON);
    try {
      const { user } = createUser(testDb);
      await updateRows(orm, Addons, { id: ADDON_IDS.JOURNEY }, { enabled: false });

      const off = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(off.status).toBe(200);
      expect(off.body.find((n: { id: string }) => n.id === TEST_NOTICE_ADDON.id)).toBeUndefined();

      await updateRows(orm, Addons, { id: ADDON_IDS.JOURNEY }, { enabled: true });

      const on = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(on.status).toBe(200);
      expect(on.body.find((n: { id: string }) => n.id === TEST_NOTICE_ADDON.id)).toBeDefined();
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE_ADDON);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  it('does not return firstLogin notice for user with login_count > 1', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });

      const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(res.status).toBe(200);
      expect(res.body.find((n: { id: string }) => n.id === TEST_NOTICE.id)).toBeUndefined();
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  it('filters out dismissed notices', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      await updateRows(orm, Users, { id: user.id }, { login_count: 1 });

      // Dismiss the notice directly in DB
      await insertRow(orm, UserNoticeDismissals, {
        user: user.id,
        notice_id: TEST_NOTICE.id,
        dismissed_at: Date.now(),
      });

      const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(res.status).toBe(200);
      // TEST_NOTICE should be filtered out; the thank-you notice may still appear
      const found = res.body.find((n: { id: string }) => n.id === TEST_NOTICE.id);
      expect(found).toBeUndefined();
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  // Drives the recurrence mechanism through a notice this test owns. It used to
  // ride on thank-you-support, which stopped applying the moment that notice was
  // capped at 4.0.0 — the mechanism was fine, the fixture had retired.
  it('re-surfaces a per-version notice after an upgrade but hides it within the same version', async () => {
    const RECURRING: SystemNotice = {
      id: 'test-per-version-notice',
      display: 'modal',
      severity: 'info',
      titleKey: 'system_notice.test_per_version_notice.title',
      bodyKey: 'system_notice.test_per_version_notice.body',
      dismissible: true,
      conditions: [],
      recurring: 'per-version',
      publishedAt: '2026-01-01T00:00:00Z',
      priority: 0,
    };
    SYSTEM_NOTICES.push(RECURRING);
    try {
      const { user } = createUser(testDb);
      await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });

      const shows = async () => {
        const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
        expect(res.status).toBe(200);
        return res.body.some((n: { id: string }) => n.id === RECURRING.id);
      };

      // Fresh user with no dismissal: the recurring notice shows.
      expect(await shows()).toBe(true);

      // Dismissed at an old version → it returns once the running version is newer.
      await insertRow(orm, UserNoticeDismissals, {
        user: user.id,
        notice_id: RECURRING.id,
        dismissed_at: Date.now(),
        dismissed_app_version: '0.0.1',
      });
      expect(await shows()).toBe(true);

      // Dismissed at a version >= the running one → stays hidden until the next upgrade.
      await updateRows(
        orm,
        UserNoticeDismissals,
        { user: user.id, notice_id: RECURRING.id },
        { dismissed_app_version: '99.0.0' },
      );
      expect(await shows()).toBe(false);
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(RECURRING);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  // The release notes carry the support links, so the promise is exact: once per
  // update for every user, whatever they did with it before, and never again on a
  // reload of the same version. Driven through the real registry entry and the real
  // dismiss route, so neither half can drift away from the other unnoticed.
  it('shows the release notes once per update, however often they were closed before', async () => {
    const { user } = createUser(testDb);
    await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });

    // The client announces the release layout and the version it was built as; a
    // bundle that predates that, or one built for another version, never gets the
    // notice (pinned separately below).
    const shows = async () => {
      const res = await request(app)
        .get('/api/system-notices/active')
        .query({ supports: 'release', ui: getCurrentAppVersion() })
        .set('Cookie', authCookie(user.id));
      expect(res.status).toBe(200);
      return res.body.some((n: { id: string }) => n.id === 'release-notes');
    };
    const dismiss = async () => {
      const res = await request(app)
        .post('/api/system-notices/release-notes/dismiss')
        .set('Cookie', authCookie(user.id));
      expect(res.status).toBe(204);
    };

    expect(await shows()).toBe(true);

    // Closed on this version: gone for every reload after it.
    await dismiss();
    expect(await shows()).toBe(false);
    expect(await shows()).toBe(false);

    // The next update brings it back, although it was closed before...
    await updateRows(
      orm,
      UserNoticeDismissals,
      { user: user.id, notice_id: 'release-notes' },
      { dismissed_app_version: '4.0.0' },
    );
    expect(await shows()).toBe(true);
    expect(await shows()).toBe(true);

    // ...and closing it again holds until the one after that.
    await dismiss();
    expect(await shows()).toBe(false);
  });

  // Right after an update the browser still runs the bundle the service worker cached,
  // which has neither the copy for the new release notice nor a way to tell. It would
  // draw the keys, or its own older texts, and on close spend the notice for this whole
  // version. So the notice waits for a client that announces the release layout AND
  // was built for the version now running; the reload brings one.
  it('keeps the release notes from a client that does not announce the release layout for this version', async () => {
    const { user } = createUser(testDb);
    await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });

    const fetchActive = (query: Record<string, string>) =>
      request(app).get('/api/system-notices/active').query(query).set('Cookie', authCookie(user.id));

    const without = await fetchActive({});
    expect(without.status).toBe(200);
    expect(without.body.some((n: { id: string }) => n.id === 'release-notes')).toBe(false);
    expect(without.body.some((n: { release?: unknown }) => n.release !== undefined)).toBe(false);

    // The layout alone is the shell of the previous version after an update.
    const layoutOnly = await fetchActive({ supports: 'release' });
    expect(layoutOnly.body.some((n: { id: string }) => n.id === 'release-notes')).toBe(false);
    const olderBundle = await fetchActive({ supports: 'release', ui: '4.0.0' });
    expect(olderBundle.body.some((n: { id: string }) => n.id === 'release-notes')).toBe(false);

    const matching = await fetchActive({ supports: 'release', ui: getCurrentAppVersion() });
    expect(matching.status).toBe(200);
    expect(matching.body.some((n: { id: string }) => n.id === 'release-notes')).toBe(true);
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// POST /api/system-notices/:id/dismiss
// ─────────────────────────────────────────────────────────────────────────────

describe('POST /api/system-notices/:id/dismiss', () => {
  it('returns 401 without auth', async () => {
    const res = await request(app).post('/api/system-notices/test-id/dismiss');
    expect(res.status).toBe(401);
  });

  it('returns 404 for unknown notice id', async () => {
    const { user } = createUser(testDb);
    const res = await request(app)
      .post('/api/system-notices/nonexistent-id/dismiss')
      .set('Cookie', authCookie(user.id));
    expect(res.status).toBe(404);
    expect(res.body.error).toBe('NOTICE_NOT_FOUND');
  });

  it('returns 204 for valid notice id', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      const res = await request(app)
        .post(`/api/system-notices/${TEST_NOTICE.id}/dismiss`)
        .set('Cookie', authCookie(user.id));
      expect(res.status).toBe(204);
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  it('is idempotent — second dismiss also returns 204', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      const first = await request(app)
        .post(`/api/system-notices/${TEST_NOTICE.id}/dismiss`)
        .set('Cookie', authCookie(user.id));
      expect(first.status).toBe(204);

      const second = await request(app)
        .post(`/api/system-notices/${TEST_NOTICE.id}/dismiss`)
        .set('Cookie', authCookie(user.id));
      expect(second.status).toBe(204);
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });

  it('dismiss appears in GET /active as filtered out', async () => {
    SYSTEM_NOTICES.push(TEST_NOTICE);
    try {
      const { user } = createUser(testDb);
      await updateRows(orm, Users, { id: user.id }, { login_count: 1 });

      // Confirm TEST_NOTICE is visible before dismiss
      const before = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(before.body.find((n: { id: string }) => n.id === TEST_NOTICE.id)).toBeDefined();

      // Dismiss it
      await request(app).post(`/api/system-notices/${TEST_NOTICE.id}/dismiss`).set('Cookie', authCookie(user.id));

      // Confirm TEST_NOTICE is gone; other notices (e.g. welcome-v1) may still appear
      const after = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
      expect(after.status).toBe(200);
      expect(after.body.find((n: { id: string }) => n.id === TEST_NOTICE.id)).toBeUndefined();
    } finally {
      const idx = SYSTEM_NOTICES.indexOf(TEST_NOTICE);
      if (idx !== -1) SYSTEM_NOTICES.splice(idx, 1);
    }
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// v3014-whitespace-collision notice
// ─────────────────────────────────────────────────────────────────────────────

/**
 * Helper: creates an admin user whose first_seen_version is before 3.0.14
 * (so existingUserBeforeVersion('3.0.14') passes) and whose login_count is
 * high enough to suppress the firstLogin and v3-upgrade notice conditions.
 */
async function setupCollisionAdmin() {
  const { user } = createAdmin(testDb);
  await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });
  return user;
}

describe('v3014-whitespace-collision notice', () => {
  const NOTICE_ID = 'v3014-whitespace-collision';
  const originalAppVersion = process.env.APP_VERSION;

  beforeEach(() => {
    process.env.APP_VERSION = '3.0.14';
  });

  afterEach(() => {
    if (originalAppVersion === undefined) {
      delete process.env.APP_VERSION;
    } else {
      process.env.APP_VERSION = originalAppVersion;
    }
  });

  it('SN-COLLISION-1 — shown to admin when collision flag is set and user predates 3.0.14', async () => {
    const user = await setupCollisionAdmin();
    await setAppSetting(orm, 'whitespace_migration_collision', 'true');

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeDefined();
  });

  it('SN-COLLISION-2 — hidden when collision flag is absent', async () => {
    const user = await setupCollisionAdmin();

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });

  it('SN-COLLISION-3 — hidden when collision flag is explicitly false', async () => {
    const user = await setupCollisionAdmin();
    await setAppSetting(orm, 'whitespace_migration_collision', 'false');

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });

  it('SN-COLLISION-4 — hidden for non-admin user even when collision flag is set', async () => {
    const { user } = createUser(testDb);
    await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.0' });
    await setAppSetting(orm, 'whitespace_migration_collision', 'true');

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });

  it('SN-COLLISION-5 — hidden for user whose first_seen_version is >= 3.0.14 (new account)', async () => {
    const { user } = createAdmin(testDb);
    await updateRows(orm, Users, { id: user.id }, { login_count: 5, first_seen_version: '3.0.14' });
    await setAppSetting(orm, 'whitespace_migration_collision', 'true');

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });

  it('SN-COLLISION-6 — hidden when app version is below 3.0.14', async () => {
    process.env.APP_VERSION = '3.0.13';
    const user = await setupCollisionAdmin();
    await setAppSetting(orm, 'whitespace_migration_collision', 'true');

    const res = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));

    expect(res.status).toBe(200);
    expect(res.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });

  it('SN-COLLISION-7 — hidden after admin dismisses it', async () => {
    const user = await setupCollisionAdmin();
    await setAppSetting(orm, 'whitespace_migration_collision', 'true');

    const before = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
    expect(before.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeDefined();

    const dismiss = await request(app)
      .post(`/api/system-notices/${NOTICE_ID}/dismiss`)
      .set('Cookie', authCookie(user.id));
    expect(dismiss.status).toBe(204);

    const after = await request(app).get('/api/system-notices/active').set('Cookie', authCookie(user.id));
    expect(after.body.find((n: { id: string }) => n.id === NOTICE_ID)).toBeUndefined();
  });
});