import { INestApplication } from '@nestjs/common';
import * as bcrypt from 'bcryptjs';
import request from 'supertest';
import { App } from 'supertest/types';
import { NotificationsService } from '../src/notifications/notifications.service';
import { PrismaService } from '../src/prisma/prisma.service';
import { createTestApp } from './utils/create-test-app';
import { login } from './utils/api';

interface NotificationBody {
  id: string;
  priority: string;
  category: string;
  read: boolean;
}

interface SettingsBody {
  taskDueEnabled: boolean;
  digestEnabled: boolean;
  digestTime: string;
  quietFrom: string | null;
  quietUntil: string | null;
  telegramCategories: string[];
  telegramDetail: boolean;
}

describe('Notifications (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  let notifications: NotificationsService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const password = 'SuperSecret123!';
  const emails = {
    beekeeper: `notifications-e2e-beekeeper-${suffix}@example.com`,
    staff: `notifications-e2e-staff-${suffix}@example.com`,
    bare: `notifications-e2e-bare-${suffix}@example.com`,
    admin: `notifications-e2e-admin-${suffix}@example.com`,
  };
  const roleKey = `NOTIF_BARE_${suffix}`;
  const ids = {} as Record<keyof typeof emails, string>;
  const tokens = {} as Record<keyof typeof emails, string>;
  const createdNotificationIds: string[] = [];
  let apiKeyId: string | undefined;

  const server = () => app.getHttpServer();
  const as = (who: keyof typeof emails) => ({
    Authorization: `Bearer ${tokens[who]}`,
  });

  async function seedNotification(
    userId: string,
    overrides: Record<string, unknown> = {},
  ) {
    const row = await prisma.notification.create({
      data: {
        userId,
        priority: 'KRITISCH',
        category: 'SYSTEM',
        message: `Kritischer Testalarm ${suffix}`,
        ...overrides,
      },
    });
    createdNotificationIds.push(row.id);
    return row;
  }

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    notifications = app.get(NotificationsService);

    await prisma.role.create({
      data: { key: roleKey, name: 'Notifications bare role' },
    });
    const passwordHash = await bcrypt.hash(password, 12);
    const roleOf: Record<keyof typeof emails, string> = {
      beekeeper: 'BEEKEEPER',
      staff: 'STAFF',
      bare: roleKey,
      admin: 'ADMIN',
    };
    for (const who of Object.keys(emails) as (keyof typeof emails)[]) {
      const user = await prisma.user.create({
        data: {
          email: emails[who],
          passwordHash,
          name: who,
          role: { connect: { key: roleOf[who] } },
        },
      });
      ids[who] = user.id;
      tokens[who] = (await login(app, emails[who], password)).accessToken;
    }
  });

  afterAll(async () => {
    const userIds = Object.values(ids);
    if (apiKeyId) {
      await prisma.apiKey.deleteMany({ where: { id: apiKeyId } });
    }
    await prisma.notification.deleteMany({
      where: {
        OR: [
          { id: { in: createdNotificationIds } },
          { userId: { in: userIds } },
        ],
      },
    });
    await prisma.notificationPreference.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.auditLog.deleteMany({ where: { userId: { in: userIds } } });
    await prisma.user.deleteMany({ where: { id: { in: userIds } } });
    await prisma.role.deleteMany({ where: { key: roleKey } });
    await app.close();
  });

  it('lists notifications for the authenticated user', async () => {
    const own = await seedNotification(ids.beekeeper);

    const response = await request(server())
      .get('/api/v1/notifications')
      .set(as('beekeeper'))
      .expect(200);
    const list = response.body as NotificationBody[];

    expect(list.some((n) => n.id === own.id && n.priority === 'KRITISCH')).toBe(
      true,
    );
    expect(list[0]).not.toHaveProperty('requiredPermissions');
    expect(list[0]).not.toHaveProperty('dedupeKey');
  });

  it('hides a row whose permissions the user does not hold (any more)', async () => {
    const open = await seedNotification(ids.bare);
    const hidden = await seedNotification(ids.bare, {
      requiredPermissions: ['colonies:read'],
    });

    const response = await request(server())
      .get('/api/v1/notifications?unreadOnly=true')
      .set(as('bare'))
      .expect(200);
    const listed = (response.body as NotificationBody[]).map((n) => n.id);

    expect(listed).toContain(open.id);
    expect(listed).not.toContain(hidden.id);
  });

  it('a row the user may not see cannot be read, marked or counted', async () => {
    const hidden = await seedNotification(ids.bare, {
      requiredPermissions: ['colonies:read'],
    });
    const open = await seedNotification(ids.bare);

    await request(server())
      .post(`/api/v1/notifications/${hidden.id}/read`)
      .set(as('bare'))
      .expect(404);

    const response = await request(server())
      .post('/api/v1/notifications/read-all')
      .set(as('bare'))
      .expect(201);

    expect(
      (response.body as { updated: number }).updated,
    ).toBeGreaterThanOrEqual(1);
    expect(
      (await prisma.notification.findUniqueOrThrow({ where: { id: open.id } }))
        .read,
    ).toBe(true);
    expect(
      (
        await prisma.notification.findUniqueOrThrow({
          where: { id: hidden.id },
        })
      ).read,
    ).toBe(false);
  });

  it('reading is per user: marking one copy read leaves the other unread', async () => {
    const [first, second] = await notifications.recordForUsers(
      [ids.beekeeper, ids.staff],
      {
        priority: 'INFO',
        category: 'SYSTEM',
        message: `Rundmeldung ${suffix}`,
        dedupeKeyPrefix: `e2e-read:${suffix}`,
      },
    );
    createdNotificationIds.push(first.id, second.id);
    const mine = [first, second].find((n) => n.userId === ids.beekeeper)!;
    const theirs = [first, second].find((n) => n.userId === ids.staff)!;

    const response = await request(server())
      .post(`/api/v1/notifications/${mine.id}/read`)
      .set(as('beekeeper'))
      .expect(201);

    expect((response.body as NotificationBody).read).toBe(true);
    expect(
      (
        await prisma.notification.findUniqueOrThrow({
          where: { id: theirs.id },
        })
      ).read,
    ).toBe(false);
  });

  it('a fan-out for colonies:read never reaches a user without it', async () => {
    const rows = await notifications.recordForPermission('colonies:read', {
      priority: 'INFO',
      category: 'SUGGESTION',
      message: `Nur mit Volksrecht ${suffix}`,
      dedupeKeyPrefix: `e2e-fanout:${suffix}`,
    });
    createdNotificationIds.push(...rows.map((row) => row.id));

    const recipients = rows.map((row) => row.userId);
    expect(recipients).toContain(ids.beekeeper);
    expect(recipients).not.toContain(ids.bare);
    expect(
      rows.every((row) => row.requiredPermissions.includes('colonies:read')),
    ).toBe(true);

    const none = await notifications.recordForUsers([ids.bare], {
      priority: 'INFO',
      category: 'SUGGESTION',
      message: 'x',
      requiredPermissions: ['colonies:read'],
    });
    expect(none).toEqual([]);
  });

  it('a repeated dedupe key writes nothing the second time', async () => {
    const input = {
      priority: 'INFO' as const,
      category: 'SYSTEM' as const,
      message: `Einmalig ${suffix}`,
      dedupeKeyPrefix: `e2e-dedupe:${suffix}`,
    };
    const first = await notifications.recordForUsers([ids.beekeeper], input);
    createdNotificationIds.push(...first.map((row) => row.id));

    const second = await notifications.recordForUsers([ids.beekeeper], input);

    expect(first).toHaveLength(1);
    expect(second).toEqual([]);
  });

  it('read-all marks only own notifications', async () => {
    const own = await seedNotification(ids.staff);
    const foreign = await seedNotification(ids.beekeeper);

    const response = await request(server())
      .post('/api/v1/notifications/read-all')
      .set(as('staff'))
      .expect(201);

    expect(
      (response.body as { updated: number }).updated,
    ).toBeGreaterThanOrEqual(1);
    expect(
      (await prisma.notification.findUniqueOrThrow({ where: { id: own.id } }))
        .read,
    ).toBe(true);
    expect(
      (
        await prisma.notification.findUniqueOrThrow({
          where: { id: foreign.id },
        })
      ).read,
    ).toBe(false);
  });

  it('reading a foreign notification answers 404', async () => {
    const foreign = await seedNotification(ids.beekeeper);

    await request(server())
      .post(`/api/v1/notifications/${foreign.id}/read`)
      .set(as('staff'))
      .expect(404);
    await request(server())
      .post('/api/v1/notifications/does-not-exist/read')
      .set(as('staff'))
      .expect(404);
    expect(
      (
        await prisma.notification.findUniqueOrThrow({
          where: { id: foreign.id },
        })
      ).read,
    ).toBe(false);
  });

  describe('notification settings', () => {
    it('an API key gets 403 on /profile/notification-settings', async () => {
      const created = await request(server())
        .post('/api/v1/api-keys')
        .set(as('admin'))
        .send({ name: `notif-e2e ${suffix}`, scopes: ['shop-sync:read'] })
        .expect(201);
      const body = created.body as { apiKey: { id: string }; token: string };
      apiKeyId = body.apiKey.id;

      await request(server())
        .get('/api/v1/profile/notification-settings')
        .set('Authorization', `Bearer ${body.token}`)
        .expect(403);
    });

    it('returns the defaults on first read', async () => {
      const response = await request(server())
        .get('/api/v1/profile/notification-settings')
        .set(as('bare'))
        .expect(200);

      expect(response.body).toEqual({
        taskDueEnabled: true,
        digestEnabled: true,
        digestTime: '06:30',
        quietFrom: '21:00',
        quietUntil: '06:30',
        telegramCategories: ['TASK_DUE', 'DIGEST'],
        telegramDetail: true,
      });
    });

    it('PATCH notification-settings stores digest time, quiet hours and Telegram categories', async () => {
      const response = await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('beekeeper'))
        .send({
          digestTime: '07:15',
          quietFrom: '22:00',
          quietUntil: '05:30',
          telegramCategories: ['SYSTEM', 'WITHDRAWAL'],
          telegramDetail: false,
        })
        .expect(200);
      const settings = response.body as SettingsBody;

      expect(settings).toMatchObject({
        digestTime: '07:15',
        quietFrom: '22:00',
        quietUntil: '05:30',
        telegramCategories: ['SYSTEM', 'WITHDRAWAL'],
        telegramDetail: false,
        taskDueEnabled: true,
      });
      const stored = await prisma.notificationPreference.findUniqueOrThrow({
        where: { userId: ids.beekeeper },
      });
      expect(stored.telegramEnabled).toBe(false);
      expect(stored.digestTime).toBe('07:15');
    });

    it('rejects a digest time outside 05:00 to 12:00 and a lone quiet-hour value', async () => {
      const early = await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('staff'))
        .send({ digestTime: '04:30' })
        .expect(400);
      expect(JSON.stringify(early.body)).toContain(
        'Bitte eine Uhrzeit zwischen 05:00 und 12:00 wählen.',
      );

      const lone = await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('staff'))
        .send({ quietFrom: null })
        .expect(400);
      expect(JSON.stringify(lone.body)).toContain(
        'Bitte Beginn und Ende der Ruhezeit zusammen leeren.',
      );

      await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('staff'))
        .send({ quietFrom: null, quietUntil: null })
        .expect(200);
      await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('staff'))
        .send({ digestEnabled: null })
        .expect(400);
    });

    it('does not accept telegramEnabled', async () => {
      await request(server())
        .patch('/api/v1/profile/notification-settings')
        .set(as('staff'))
        .send({ telegramEnabled: true })
        .expect(400);
    });
  });
});