/**
 * Drawings 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('Drawings API', () => {
  let app: FastifyInstance;
  let db: SqliteAdapter;
  let projectId: string;
  let createdDrawingId: string;

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

    // Create a project first (drawings belong to projects)
    const projectRes = await app.inject({
      method: 'POST',
      url: '/api/projects',
      payload: { name: 'Drawings Test Project' },
    });
    projectId = JSON.parse(projectRes.body).id;
  });

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

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

  describe('POST /api/projects/:projectId/drawings', () => {
    it('should create a drawing with 201', async () => {
      const response = await app.inject({
        method: 'POST',
        url: `/api/projects/${projectId}/drawings`,
        payload: { name: 'Ground Floor' },
      });
      expect(response.statusCode).toBe(201);
      const body = JSON.parse(response.body);
      expect(body.id).toBeDefined();
      expect(body.name).toBe('Ground Floor');
      expect(body.project_id).toBe(projectId);
      createdDrawingId = body.id;
    });

    it('should create a drawing with default name', async () => {
      const response = await app.inject({
        method: 'POST',
        url: `/api/projects/${projectId}/drawings`,
        payload: {},
      });
      expect(response.statusCode).toBe(201);
      const body = JSON.parse(response.body);
      expect(body.name).toBe('Unbenannt');
      expect(body.project_id).toBe(projectId);
    });
  });

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

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

    it('should return empty array for project with no drawings', async () => {
      // Create a new empty project
      const projRes = await app.inject({
        method: 'POST',
        url: '/api/projects',
        payload: { name: 'Empty Project' },
      });
      const emptyProjId = JSON.parse(projRes.body).id;

      const response = await app.inject({
        method: 'GET',
        url: `/api/projects/${emptyProjId}/drawings`,
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(Array.isArray(body)).toBe(true);
      expect(body.length).toBe(0);
    });
  });

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

  describe('GET /api/drawings/:id', () => {
    it('should get a single drawing', async () => {
      const response = await app.inject({
        method: 'GET',
        url: `/api/drawings/${createdDrawingId}`,
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.id).toBe(createdDrawingId);
      expect(body.name).toBe('Ground Floor');
    });

    it('should return 404 for non-existent drawing', async () => {
      const response = await app.inject({
        method: 'GET',
        url: '/api/drawings/non-existent-id',
      });
      expect(response.statusCode).toBe(404);
    });
  });

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

  describe('PATCH /api/drawings/:id', () => {
    it('should update drawing name', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: `/api/drawings/${createdDrawingId}`,
        payload: { name: 'First Floor' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.name).toBe('First Floor');
    });

    it('should update drawing data_json', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: `/api/drawings/${createdDrawingId}`,
        payload: { data_json: '{"layers":[]}' },
      });
      expect(response.statusCode).toBe(200);
      const body = JSON.parse(response.body);
      expect(body.data_json).toBe('{"layers":[]}');
    });

    it('should return 404 for non-existent drawing update', async () => {
      const response = await app.inject({
        method: 'PATCH',
        url: '/api/drawings/non-existent-id',
        payload: { name: 'New Name' },
      });
      expect(response.statusCode).toBe(404);
    });
  });

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

  describe('DELETE /api/drawings/:id', () => {
    it('should delete a drawing', async () => {
      // Create a drawing to delete
      const createRes = await app.inject({
        method: 'POST',
        url: `/api/projects/${projectId}/drawings`,
        payload: { name: 'To Be Deleted' },
      });
      const drawingId = JSON.parse(createRes.body).id;

      const response = await app.inject({
        method: 'DELETE',
        url: `/api/drawings/${drawingId}`,
      });
      expect(response.statusCode).toBe(204);

      // Verify it's gone
      const getRes = await app.inject({
        method: 'GET',
        url: `/api/drawings/${drawingId}`,
      });
      expect(getRes.statusCode).toBe(404);
    });

    it('should return 404 for non-existent drawing delete', async () => {
      const response = await app.inject({
        method: 'DELETE',
        url: '/api/drawings/non-existent-id',
      });
      expect(response.statusCode).toBe(404);
    });
  });
});