import { INestApplication } from '@nestjs/common';
import { Test, TestingModule } from '@nestjs/testing';
import { eq } from 'drizzle-orm';
import request from 'supertest';
import { App } from 'supertest/types';
import { AppModule } from '../src/app.module';
import { configureApp } from '../src/common/configure-app';
import { DRIZZLE, type DrizzleDB } from '../src/database/database.module';
import {
  privilegeDetails,
  privilegeKeys,
  privileges,
  users,
} from '../src/database/schema';
import { PRIVILEGE_ACTIONS } from '../src/modules/privileges/privilege-action';
import { registerAndActivate } from './helpers/activate-user';

describe('Divisions (e2e)', () => {
  let app: INestApplication<App>;
  let db: DrizzleDB;

  const password = 'password123';
  const adminUsername = `div_admin_${Date.now()}`;
  const otherUsername = `div_other_${Date.now()}`;

  let adminAccessToken: string;
  let adminUserId: string;
  let otherAccessToken: string;

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleFixture.createNestApplication();
    configureApp(app, {
      NODE_ENV: 'test',
      SWAGGER_ENABLED: 'false',
    });
    await app.init();
    db = app.get(DRIZZLE);

    const admin = await registerAndActivate(app, db, adminUsername, password);
    adminAccessToken = admin.accessToken;
    adminUserId = admin.userId;

    const other = await registerAndActivate(app, db, otherUsername, password);
    otherAccessToken = other.accessToken;

    const now = Date.now();
    const [priv] = await db
      .insert(privileges)
      .values({
        name: 'Division Admin',
        code: `DIV_ADMIN_${now}`,
        status: 'active',
        createdAt: now,
        updatedAt: now,
        createdBy: adminUserId,
        updatedBy: adminUserId,
      })
      .returning();

    const keys = await db.select().from(privilegeKeys);
    const detailRows = keys.flatMap((key) =>
      PRIVILEGE_ACTIONS.map((action) => ({
        privilegeId: priv.id,
        privilegeKeyId: key.id,
        action,
        value: true,
      })),
    );
    await db.insert(privilegeDetails).values(detailRows);

    await db
      .update(users)
      .set({ privilegeId: priv.id, updatedAt: Date.now() })
      .where(eq(users.id, adminUserId));
  });

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

  it('forbids divisions list without permission', async () => {
    await request(app.getHttpServer())
      .get('/divisions')
      .set('Authorization', `Bearer ${otherAccessToken}`)
      .expect(403);
  });

  it('rejects unauthenticated access', async () => {
    await request(app.getHttpServer()).get('/divisions').expect(401);
  });

  it('CRUD divisions with name/code rules, status, search, and bulk', async () => {
    const created = await request(app.getHttpServer())
      .post('/divisions')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ name: 'Human Resources', code: 'HR' })
      .expect(201);

    expect(created.body).toMatchObject({
      name: 'Human Resources',
      code: 'HR',
      status: 'draft',
      createdBy: adminUserId,
    });
    const id = created.body.id as string;

    await request(app.getHttpServer())
      .post('/divisions')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ name: 'Finance1', code: 'FIN' })
      .expect(400);

    await request(app.getHttpServer())
      .post('/divisions')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ name: 'Finance', code: 'FIN 01' })
      .expect(400);

    await request(app.getHttpServer())
      .get(`/divisions/${id}`)
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .expect(200);

    await request(app.getHttpServer())
      .patch(`/divisions/${id}`)
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ name: 'People Operations' })
      .expect(200);

    await request(app.getHttpServer())
      .patch(`/divisions/${id}`)
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ status: 'active' })
      .expect(400);

    await request(app.getHttpServer())
      .patch(`/divisions/${id}/status`)
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ status: 'active' })
      .expect(200);

    const list = await request(app.getHttpServer())
      .get('/divisions?search=People')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .expect(200);
    expect(list.body.data.length).toBeGreaterThanOrEqual(1);
    expect(list.body.meta).toBeDefined();

    const extra = await request(app.getHttpServer())
      .post('/divisions')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ name: 'Operations', code: 'OPS' })
      .expect(201);

    await request(app.getHttpServer())
      .post('/divisions/bulk-status')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ ids: [extra.body.id], status: 'archived' })
      .expect(200);

    await request(app.getHttpServer())
      .post('/divisions/bulk-delete')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .send({ ids: [extra.body.id] })
      .expect(200);

    await request(app.getHttpServer())
      .delete(`/divisions/${id}`)
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .expect(204);
  });

  it('imports divisions from CSV', async () => {
    const csv = `name,code,status\nImported Division,IMP_${Date.now().toString().slice(-8)},draft\n`;
    const res = await request(app.getHttpServer())
      .post('/divisions/import')
      .set('Authorization', `Bearer ${adminAccessToken}`)
      .attach('file', Buffer.from(csv, 'utf8'), 'divisions.csv')
      .expect(201);

    expect(res.body).toMatchObject({ imported: 1 });
  });
});