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

interface DocumentBody {
  id: string;
  entityType: string;
  entityId: string;
  fileName: string;
  mimeType: string;
  sizeBytes: number;
  storagePath?: string;
}

describe('Documents (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const beekeeperEmail = `documents-e2e-beekeeper-${Date.now()}@example.com`;
  const readonlyEmail = `documents-e2e-readonly-${Date.now()}@example.com`;
  const password = 'SuperSecret123!';
  let beekeeperId: string;
  let readonlyId: string;
  let beekeeperToken: string;
  let readonlyToken: string;
  let apiaryId: string;
  let colonyId: string;
  let documentId: string;

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

    const passwordHash = await bcrypt.hash(password, 12);
    const beekeeper = await prisma.user.create({
      data: {
        email: beekeeperEmail,
        passwordHash,
        name: 'Documents E2E Beekeeper',
        role: { connect: { key: 'BEEKEEPER' } },
      },
    });
    beekeeperId = beekeeper.id;
    const readonly = await prisma.user.create({
      data: {
        email: readonlyEmail,
        passwordHash,
        name: 'Documents E2E Readonly',
        role: { connect: { key: 'READONLY' } },
      },
    });
    readonlyId = readonly.id;
    beekeeperToken = (await login(app, beekeeperEmail, password)).accessToken;
    readonlyToken = (await login(app, readonlyEmail, password)).accessToken;

    const apiary = await prisma.apiary.create({
      data: { name: `Dokumente-Stand ${Date.now()}` },
    });
    apiaryId = apiary.id;
    const colony = await prisma.colony.create({
      data: {
        code: `V-DOC-${Date.now()}`,
        apiaryId,
        colonyType: 'PRODUCTION_COLONY',
      },
    });
    colonyId = colony.id;
  });

  afterAll(async () => {
    await prisma.document.deleteMany({
      where: { entityType: 'COLONY', entityId: colonyId },
    });
    await prisma.colony.deleteMany({ where: { id: colonyId } });
    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: [beekeeperId, readonlyId] } },
    });
    await prisma.auditLog.deleteMany({
      where: { userId: { in: [beekeeperId, readonlyId] } },
    });
    await prisma.user.deleteMany({
      where: { id: { in: [beekeeperId, readonlyId] } },
    });
    await fs.rm('./test-uploads', { recursive: true, force: true });
    await app.close();
  });

  it('rejects an upload from a role without write access', () => {
    return request(app.getHttpServer())
      .post('/api/v1/documents')
      .set('Authorization', `Bearer ${readonlyToken}`)
      .field('entityType', 'COLONY')
      .field('entityId', colonyId)
      .attach('file', Buffer.from('fake image bytes'), {
        filename: 'bild.png',
        contentType: 'image/png',
      })
      .expect(403);
  });

  it('rejects an unsupported mime type', () => {
    return request(app.getHttpServer())
      .post('/api/v1/documents')
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .field('entityType', 'COLONY')
      .field('entityId', colonyId)
      .attach('file', Buffer.from('not an image'), {
        filename: 'script.exe',
        contentType: 'application/octet-stream',
      })
      .expect(400);
  });

  it('rejects an upload for a non-existent entity', () => {
    return request(app.getHttpServer())
      .post('/api/v1/documents')
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .field('entityType', 'COLONY')
      .field('entityId', 'does-not-exist')
      .attach('file', Buffer.from('fake image bytes'), {
        filename: 'bild.png',
        contentType: 'image/png',
      })
      .expect(404);
  });

  it('lets a beekeeper upload a document and omits storagePath from the response', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/documents')
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .field('entityType', 'COLONY')
      .field('entityId', colonyId)
      .attach('file', Buffer.from('fake image bytes'), {
        filename: 'bild.png',
        contentType: 'image/png',
      })
      .expect(201);
    const body = response.body as DocumentBody;
    documentId = body.id;
    expect(body.entityType).toBe('COLONY');
    expect(body.entityId).toBe(colonyId);
    expect(body.fileName).toBe('bild.png');
    expect(body.mimeType).toBe('image/png');
    expect(body.storagePath).toBeUndefined();
  });

  it('lists documents for the entity', async () => {
    const response = await request(app.getHttpServer())
      .get(`/api/v1/documents?entityType=COLONY&entityId=${colonyId}`)
      .set('Authorization', `Bearer ${readonlyToken}`)
      .expect(200);
    const body = response.body as DocumentBody[];
    expect(body.some((entry) => entry.id === documentId)).toBe(true);
  });

  it('downloads the uploaded file with matching content and headers', async () => {
    const response = await request(app.getHttpServer())
      .get(`/api/v1/documents/${documentId}/download`)
      .set('Authorization', `Bearer ${readonlyToken}`)
      .expect(200);
    expect(response.headers['content-type']).toContain('image/png');
    expect(response.headers['content-disposition']).toContain('bild.png');
    const downloaded = response.body as Buffer;
    expect(downloaded.toString('utf-8')).toBe('fake image bytes');
  });

  it('rejects a delete from a role without write access', () => {
    return request(app.getHttpServer())
      .delete(`/api/v1/documents/${documentId}`)
      .set('Authorization', `Bearer ${readonlyToken}`)
      .expect(403);
  });

  it('lets a beekeeper delete the document', () => {
    return request(app.getHttpServer())
      .delete(`/api/v1/documents/${documentId}`)
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .expect(204);
  });
});