import { INestApplication } from '@nestjs/common';
import request from 'supertest';
import { buildTestApp } from './app.harness';

describe('EnvironmentController', () => {
  let app: INestApplication;

  beforeAll(async () => {
    app = await buildTestApp();
  });

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

  // ── POST /environments ─────────────────────────────────────────────────────

  describe('POST /environments', () => {
    it('creates an environment and returns 201', async () => {
      const res = await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-a', urls: { id_url: 'https://id.example.com' } })
        .expect(201);

      expect(res.body.id).toBeDefined();
      expect(res.body.name).toBe('env-a');
      expect(res.body.urls.id_url).toBe('https://id.example.com');
    });

    it('returns 400 when name is missing', async () => {
      await request(app.getHttpServer())
        .post('/environments')
        .send({ urls: { id_url: 'https://id.example.com' } })
        .expect(400);
    });

    it('returns 400 when urls is missing', async () => {
      await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-no-urls' })
        .expect(400);
    });

    it('returns 400 when urls is not an object', async () => {
      await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-bad-urls', urls: 'not-an-object' })
        .expect(400);
    });

    it('returns 409 when name already exists', async () => {
      await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-duplicate', urls: {} })
        .expect(201);

      await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-duplicate', urls: {} })
        .expect(409);
    });
  });

  // ── GET /environments ──────────────────────────────────────────────────────

  describe('GET /environments', () => {
    it('returns 200 with a paginated result', async () => {
      const res = await request(app.getHttpServer()).get('/environments').expect(200);
      expect(Array.isArray(res.body.data)).toBe(true);
      expect(typeof res.body.total).toBe('number');
      expect(res.body).toHaveProperty('page');
      expect(res.body).toHaveProperty('limit');
    });

    it('respects page and limit params', async () => {
      // seed two extra environments
      await request(app.getHttpServer()).post('/environments').send({ name: 'env-page-1', urls: {} }).expect(201);
      await request(app.getHttpServer()).post('/environments').send({ name: 'env-page-2', urls: {} }).expect(201);

      const res = await request(app.getHttpServer()).get('/environments?page=1&limit=1').expect(200);
      expect(res.body.data).toHaveLength(1);
      expect(res.body.page).toBe(1);
      expect(res.body.limit).toBe(1);
    });

    it('returns empty data array for out-of-range page', async () => {
      const res = await request(app.getHttpServer()).get('/environments?page=9999&limit=20').expect(200);
      expect(res.body.data).toHaveLength(0);
    });

    it('returns 400 for invalid page param', async () => {
      await request(app.getHttpServer()).get('/environments?page=0').expect(400);
    });

    it('orders by name ASC', async () => {
      await request(app.getHttpServer()).post('/environments').send({ name: 'zzz-env', urls: {} });
      await request(app.getHttpServer()).post('/environments').send({ name: 'aaa-env', urls: {} });

      const res = await request(app.getHttpServer()).get('/environments?orderBy=name&orderDir=ASC').expect(200);
      const names: string[] = res.body.data.map((e: any) => e.name);
      expect(names).toEqual([...names].sort());
    });

    it('orders by name DESC', async () => {
      const res = await request(app.getHttpServer()).get('/environments?orderBy=name&orderDir=DESC').expect(200);
      const names: string[] = res.body.data.map((e: any) => e.name);
      expect(names).toEqual([...names].sort().reverse());
    });

    it('returns 400 for invalid orderDir', async () => {
      await request(app.getHttpServer()).get('/environments?orderDir=SIDEWAYS').expect(400);
    });
  });

  // ── GET /environments/:id ──────────────────────────────────────────────────

  describe('GET /environments/:id', () => {
    it('returns the created environment', async () => {
      const created = await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-get-one', urls: { cabinet_url: 'https://cabinet.example.com' } })
        .expect(201);

      const res = await request(app.getHttpServer())
        .get(`/environments/${created.body.id}`)
        .expect(200);

      expect(res.body.name).toBe('env-get-one');
    });

    it('returns 404 for unknown id', async () => {
      await request(app.getHttpServer()).get('/environments/99999').expect(404);
    });

    it('returns 400 for non-numeric id', async () => {
      await request(app.getHttpServer()).get('/environments/abc').expect(400);
    });
  });

  // ── PATCH /environments/:id ────────────────────────────────────────────────

  describe('PATCH /environments/:id', () => {
    it('updates name and returns 200', async () => {
      const created = await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-patch-me', urls: {} })
        .expect(201);

      const res = await request(app.getHttpServer())
        .patch(`/environments/${created.body.id}`)
        .send({ name: 'env-patched' })
        .expect(200);

      expect(res.body.name).toBe('env-patched');
    });

    it('returns 404 for unknown id', async () => {
      await request(app.getHttpServer())
        .patch('/environments/99999')
        .send({ name: 'x' })
        .expect(404);
    });
  });

  // ── DELETE /environments/:id ───────────────────────────────────────────────

  describe('DELETE /environments/:id', () => {
    it('deletes and returns 204', async () => {
      const created = await request(app.getHttpServer())
        .post('/environments')
        .send({ name: 'env-delete-me', urls: {} })
        .expect(201);

      await request(app.getHttpServer())
        .delete(`/environments/${created.body.id}`)
        .expect(204);

      await request(app.getHttpServer())
        .get(`/environments/${created.body.id}`)
        .expect(404);
    });

    it('returns 404 for unknown id', async () => {
      await request(app.getHttpServer()).delete('/environments/99999').expect(404);
    });
  });
});