import { describe, it, expect, beforeAll, afterAll } from 'vitest';
import request from 'supertest';
import express from 'express';
import cors from 'cors';
import knex from 'knex';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import { Router } from 'express';
import { registerToken, authMiddleware } from '../middleware/auth.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

let app;
let db;
const TEST_TOKEN = 'test-token-12345';

function createCVRoutes(db) {
  const router = Router();
  
  router.get('/', async (req, res) => {
    try {
      const row = await db('cv_data').where({ id: 1 }).first();
      if (!row) {
        return res.status(404).json({ error: 'CV data not found' });
      }
      res.json(JSON.parse(row.data));
    } catch (error) {
      console.error('Error fetching CV:', error);
      res.status(500).json({ error: 'Failed to fetch CV data' });
    }
  });
  
  router.put('/', authMiddleware, async (req, res) => {
    try {
      const data = req.body;
      if (!data || typeof data !== 'object') {
        return res.status(400).json({ error: 'Invalid CV data' });
      }
      if (!data.personal?.name) {
        return res.status(400).json({ error: 'personal.name is required' });
      }
      await db('cv_data').where({ id: 1 }).update({
        data: JSON.stringify(data),
        updated_at: db.fn.now()
      });
      res.json({ success: true, message: 'CV data updated' });
    } catch (error) {
      console.error('Error updating CV:', error);
      res.status(500).json({ error: 'Failed to update CV data' });
    }
  });
  
  router.get('/export', async (req, res) => {
    try {
      const row = await db('cv_data').where({ id: 1 }).first();
      if (!row) {
        return res.status(404).json({ error: 'CV data not found' });
      }
      res.setHeader('Content-Type', 'application/json');
      res.setHeader('Content-Disposition', 'attachment; filename="cv.json"');
      res.send(row.data);
    } catch (error) {
      console.error('Error exporting CV:', error);
      res.status(500).json({ error: 'Failed to export CV data' });
    }
  });
  
  return router;
}

beforeAll(async () => {
  const testDbPath = join(__dirname, 'test.db');
  
  db = knex({
    client: 'better-sqlite3',
    connection: { filename: testDbPath },
    useNullAsDefault: true
  });

  await db.schema.dropTableIfExists('cv_data');
  await db.schema.createTable('cv_data', (table) => {
    table.increments('id').primary();
    table.text('data').notNullable();
    table.datetime('updated_at').defaultTo(db.fn.now());
  });
  
  const defaultData = {
    personal: { name: 'Test User', title: 'Developer', email: 'test@test.com' },
    experience: [],
    skills: {},
    education: [],
    projects: []
  };
  
  await db('cv_data').insert({ id: 1, data: JSON.stringify(defaultData) });
  
  registerToken(TEST_TOKEN);
  
  app = express();
  app.use(cors());
  app.use(express.json());
  app.use('/api/cv', createCVRoutes(db));
});

afterAll(async () => {
  if (db) {
    await db.destroy();
  }
});

describe('CV API', () => {
  it('GET /api/cv returns CV data', async () => {
    const response = await request(app).get('/api/cv');
    expect(response.status).toBe(200);
    expect(response.body.personal.name).toBe('Test User');
  });
  
  it('PUT /api/cv updates CV data', async () => {
    const response = await request(app)
      .put('/api/cv')
      .set('Authorization', `Bearer ${TEST_TOKEN}`)
      .send({
        personal: { name: 'Updated Name', title: 'Dev', email: 'test@test.com' },
        experience: [],
        skills: {},
        education: [],
        projects: []
      });
    expect(response.status).toBe(200);
    expect(response.body.success).toBe(true);
    
    const getResponse = await request(app).get('/api/cv');
    expect(getResponse.body.personal.name).toBe('Updated Name');
  });
  
  it('PUT /api/cv validates required fields', async () => {
    const response = await request(app)
      .put('/api/cv')
      .set('Authorization', `Bearer ${TEST_TOKEN}`)
      .send({ personal: {} });
    expect(response.status).toBe(400);
    expect(response.body.error).toContain('name is required');
  });
  
  it('PUT /api/cv requires authentication', async () => {
    const response = await request(app)
      .put('/api/cv')
      .send({
        personal: { name: 'Test', title: 'Dev', email: 'test@test.com' },
        experience: [],
        skills: {},
        education: [],
        projects: []
      });
    expect(response.status).toBe(401);
  });
  
  it('GET /api/cv/export returns JSON file', async () => {
    const response = await request(app).get('/api/cv/export');
    expect(response.status).toBe(200);
    expect(response.headers['content-type']).toContain('application/json');
    const data = JSON.parse(response.text);
    expect(data.personal).toBeDefined();
  });
});