import fs from 'fs/promises';
import path from 'path';
import { fileURLToPath } from 'url';
import { IUserRepository } from '../Domain/IUserRepository.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const USER_FILE = path.join(__dirname, 'user.json');

export class UserRepository extends IUserRepository {
  async getAll() {
    try {
      const data = await fs.readFile(USER_FILE, 'utf-8');
      return JSON.parse(data);
    } catch (error) {
      return [];
    }
  }

  async getById(id) {
    const users = await this.getAll();
    return users.find(user => user.id === id);
  }

  async create(user) {
    const users = await this.getAll();
    const newUser = {
      id: Date.now().toString(),
      ...user,
      createdAt: new Date().toISOString()
    };
    users.push(newUser);
    await fs.writeFile(USER_FILE, JSON.stringify(users, null, 2));
    return newUser;
  }

  async update(id, userData) {
    const users = await this.getAll();
    const index = users.findIndex(user => user.id === id);
    if (index === -1) return null;
    
    users[index] = {
      ...users[index],
      ...userData,
      id: users[index].id,
      updatedAt: new Date().toISOString()
    };
    await fs.writeFile(USER_FILE, JSON.stringify(users, null, 2));
    return users[index];
  }

  async delete(id) {
    const users = await this.getAll();
    const filteredUsers = users.filter(user => user.id !== id);
    if (users.length === filteredUsers.length) return false;
    
    await fs.writeFile(USER_FILE, JSON.stringify(filteredUsers, null, 2));
    return true;
  }
}