/**
 * Projects API Tests – CRUD (List / Get / Create / Update / Delete)
 */
import { describe, it, expect, beforeAll, afterAll } from 'vitest';
import type { FastifyInstance } from 'fastify';
import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
import { createServer } from '../src/server.js';

describe('Projects API', () => {
  let app: FastifyInstance;
  let db: SqliteAdapter;
  let createdProjectId: string | null = null;
  let authToken: string;

  beforeAll(async () => {
    db = new SqliteAdapter(':memory:');
    await db.init();
    app = await createServer({ db, port: 0 });
    await app.ready();

    const regRes = await app.inject({
      method: 'POST',
      url: '/api/auth/register',
      payload: { email: 'admin-test@example.com', password: 'Password123!', name: 'Admin Test', role: 'admin' },
    });
    authToken = JSON.parse(regRes.body).session.token;
  });

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

  // ─── Auth Check ──────────────────────────────────────

  describe('Authentication', () => {
    it('should return 401 without authorization header', async () => {
      const response = await app.inject({
        method: 'GET',
        url: '/api/projects',
      });
      expect(response.statusCode).toBe(401);
    });
  });

  // ─── Create ─────────────────────────────────────────

  describe('POST /api/projects', () => {
    it('should create a project with 201', async () => {
      const response = await app.inject({
        method: 'POST',
        url: '/api/projects',
        headers: { authorization: `Bearer ${authToken}` },
        payload: {
          name: 'Test Project',
          description: 'A test project',
        },
      });
      expect(response.statusCode).toBe(201);
      const body = JSON.parse(response.body);
      expect(body.id).toBeDefined();
      expect(body.name).toBe('Test Project');
      expect(body.description).toBe('A test project');
      createdProjectId = body.id;
    });

    it('should reject project without name with 400', async () => {
      const response = await app.inject({
        method: 'POST',
        url: '/api/projects',
        headers: { authorization: `Bearer ${authToken}` },
        payload: { description: 'No name' },
      });
      expect(response.statusCode).toBe(400);
    });

    it('should create project with default values', async () => {
      const response = await app.inject({
        method: 'POST',
        url: '/api/projects',
        headers: { authorization: `Bearer ${authToken}` },
        payload: { name: 'Minimal Project' },
      });
      expect(response.statusCode).toBe(201);
      const body = JSON.parse(response.body);
      expect(body.name).toBe('Minimal Project');
      expect(body.description).toBeNull();
    });
  });

  // ─── List ───────────────────────────────────────────

  describe('GET /api/projects', () => {
    it('should list all projects', async () => {
      const response = await app.inject({
        method: 'GET',
        url: '/api/projects',
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(Array.isArray(body)).toBe(true);
      expect(body.length).toBeGreaterThanOrEqual(2);
    });
  });

  // ─── Get ────────────────────────────────────────────

  describe('GET /api/projects/:id', () => {
    it('should get a single project', async () => {
      const response = await app.inject({
        method: 'GET',
        url: `/api/projects/${createdProjectId}`,
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.id).toBe(createdProjectId);
      expect(body.name).toBe('Test Project');
    });

    it('should return 404 for non-existent project', async () => {
      const response = await app.inject({
        method: 'GET',
        url: '/api/projects/non-existent-id',
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(response.statusCode).toBe(404);
    });
  });

  // ─── Update ─────────────────────────────────────────

  describe('PATCH /api/projects/:id', () => {
    it('should update project name', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: `/api/projects/${createdProjectId}`,
        headers: { authorization: `Bearer ${authToken}` },
        payload: { name: 'Updated Project Name' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.name).toBe('Updated Project Name');
      expect(body.id).toBe(createdProjectId);
    });

    it('should update project description', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: `/api/projects/${createdProjectId}`,
        headers: { authorization: `Bearer ${authToken}` },
        payload: { description: 'Updated description' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.description).toBe('Updated description');
    });

    it('should return 404 for non-existent project update', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: '/api/projects/non-existent-id',
        headers: { authorization: `Bearer ${authToken}` },
        payload: { name: 'New Name' },
      });
      expect(response.statusCode).toBe(404);
    });
  });

  // ─── Delete ─────────────────────────────────────────

  describe('DELETE /api/projects/:id', () => {
    it('should delete a project', async () => {
      // First create a project to delete
      const createRes = await app.inject({
        method: 'POST',
        url: '/api/projects',
        headers: { authorization: `Bearer ${authToken}` },
        payload: { name: 'To Be Deleted' },
      });
      const projectId = JSON.parse(createRes.body).id;

      const response = await app.inject({
        method: 'DELETE',
        url: `/api/projects/${projectId}`,
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(response.statusCode).toBe(204);

      // Verify it's gone
      const getRes = await app.inject({
        method: 'GET',
        url: `/api/projects/${projectId}`,
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(getRes.statusCode).toBe(404);
    });

    it('should return 404 for non-existent project delete', async () => {
      const response = await app.inject({
        method: 'DELETE',
        url: '/api/projects/non-existent-id',
        headers: { authorization: `Bearer ${authToken}` },
      });
      expect(response.statusCode).toBe(404);
    });
  });
});