import { describe, it, expect, vi, afterEach } from 'vitest';
import Fastify from 'fastify';
import type { FastifyInstance } from 'fastify';
import { registerSecretRoutes } from '../src/routes/secrets.js';
import { SecretService } from '../src/services/secret.service.js';
import { errorHandler } from '../src/middleware/error-handler.js';
import type { ISecretRepository } from '../src/repositories/interfaces.js';

let app: FastifyInstance;

function mockRepo(): ISecretRepository {
  let lastCreated: Record<string, unknown> | null = null;
  return {
    findAll: vi.fn(async () => [
      { id: '1', name: 'ha-creds', data: { TOKEN: 'abc' }, version: 1, createdAt: new Date(), updatedAt: new Date() },
    ]),
    findById: vi.fn(async (id: string) => {
      if (lastCreated && (lastCreated as { id: string }).id === id) return lastCreated as never;
      return null;
    }),
    findByName: vi.fn(async () => null),
    create: vi.fn(async (data) => {
      const secret = {
        id: 'new-id',
        name: data.name,
        data: data.data ?? {},
        version: 1,
        createdAt: new Date(),
        updatedAt: new Date(),
      };
      lastCreated = secret;
      return secret;
    }),
    update: vi.fn(async (id, data) => {
      const secret = {
        id,
        name: 'ha-creds',
        data: data.data,
        version: 2,
        createdAt: new Date(),
        updatedAt: new Date(),
      };
      lastCreated = secret;
      return secret;
    }),
    delete: vi.fn(async () => {}),
  };
}

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

function createApp(repo: ISecretRepository) {
  app = Fastify({ logger: false });
  app.setErrorHandler(errorHandler);
  const service = new SecretService(repo);
  registerSecretRoutes(app, service);
  return app.ready();
}

describe('Secret Routes', () => {
  describe('GET /api/v1/secrets', () => {
    it('returns secret list', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({ method: 'GET', url: '/api/v1/secrets' });
      expect(res.statusCode).toBe(200);
      const body = res.json<Array<{ name: string }>>();
      expect(body).toHaveLength(1);
      expect(body[0]?.name).toBe('ha-creds');
    });
  });

  describe('GET /api/v1/secrets/:id', () => {
    it('returns 404 when not found', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({ method: 'GET', url: '/api/v1/secrets/missing' });
      expect(res.statusCode).toBe(404);
    });

    it('returns secret when found', async () => {
      const repo = mockRepo();
      vi.mocked(repo.findById).mockResolvedValue({ id: '1', name: 'ha-creds', data: { TOKEN: 'abc' } } as never);
      await createApp(repo);
      const res = await app.inject({ method: 'GET', url: '/api/v1/secrets/1' });
      expect(res.statusCode).toBe(200);
    });
  });

  describe('POST /api/v1/secrets', () => {
    it('creates a secret and returns 201', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({
        method: 'POST',
        url: '/api/v1/secrets',
        payload: { name: 'new-secret', data: { KEY: 'val' } },
      });
      expect(res.statusCode).toBe(201);
      expect(res.json<{ name: string }>().name).toBe('new-secret');
    });

    it('returns 400 for invalid input', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({
        method: 'POST',
        url: '/api/v1/secrets',
        payload: { name: '' },
      });
      expect(res.statusCode).toBe(400);
    });

    it('returns 409 when name already exists', async () => {
      const repo = mockRepo();
      vi.mocked(repo.findByName).mockResolvedValue({ id: '1' } as never);
      await createApp(repo);
      const res = await app.inject({
        method: 'POST',
        url: '/api/v1/secrets',
        payload: { name: 'existing' },
      });
      expect(res.statusCode).toBe(409);
    });
  });

  describe('PUT /api/v1/secrets/:id', () => {
    it('updates a secret', async () => {
      const repo = mockRepo();
      vi.mocked(repo.findById).mockResolvedValue({ id: '1', name: 'ha-creds' } as never);
      await createApp(repo);
      const res = await app.inject({
        method: 'PUT',
        url: '/api/v1/secrets/1',
        payload: { data: { TOKEN: 'new-val' } },
      });
      expect(res.statusCode).toBe(200);
    });

    it('returns 404 when not found', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({
        method: 'PUT',
        url: '/api/v1/secrets/missing',
        payload: { data: { X: 'y' } },
      });
      expect(res.statusCode).toBe(404);
    });
  });

  describe('DELETE /api/v1/secrets/:id', () => {
    it('deletes a secret and returns 204', async () => {
      const repo = mockRepo();
      vi.mocked(repo.findById).mockResolvedValue({ id: '1', name: 'ha-creds' } as never);
      await createApp(repo);
      const res = await app.inject({ method: 'DELETE', url: '/api/v1/secrets/1' });
      expect(res.statusCode).toBe(204);
    });

    it('returns 404 when not found', async () => {
      const repo = mockRepo();
      await createApp(repo);
      const res = await app.inject({ method: 'DELETE', url: '/api/v1/secrets/missing' });
      expect(res.statusCode).toBe(404);
    });
  });
});