const fetch = require('node-fetch');

class APIClient {
  constructor(baseUrl = process.env.API_URL || 'https://api.thinklink.ai') {
    this.baseUrl = baseUrl;
  }

  async request(endpoint, options = {}) {
    const url = `${this.baseUrl}${endpoint}`;
    
    try {
      const response = await fetch(url, {
        method: options.method || 'POST',
        headers: {
          'Content-Type': 'application/json',
          ...(options.headers || {})
        },
        body: options.body ? JSON.stringify(options.body) : undefined
      });

      const data = await response.json();
      return data;
    } catch (error) {
      console.error(`API request failed: ${endpoint}`, error.message);
      return {
        error: true,
        message: `Network error: ${error.message}`
      };
    }
  }

  async login(email, password, recaptchaToken) {
    return this.request('/user/login', {
      body: {
        login: email,
        password: password,
        'g-recaptcha-response': recaptchaToken
      }
    });
  }

  async getBots(token) {
    return this.request('/bot/list', {
      body: {
        token: token
      }
    });
  }

  async getOrders(token, botId, afterId = 0, options = {}) {
    const body = {
      token: token,
      botId: parseInt(botId, 10),
      afterId: afterId || 0,
      limit: options.limit || 50,
      includeCanceled: options.includeCanceled || false
    };

    if (options.orderStatus) {
      body.orderStatus = options.orderStatus;
    }

    if (options.sinceTs) {
      body.sinceTs = options.sinceTs;
    }

    return this.request('/food-order/orders', { body });
  }

  async modifyOrder(token, botId, orderId, action, cancellationReason = '') {
    const body = {
      token: token,
      botId: parseInt(botId, 10),
      orderId: parseInt(orderId, 10),
      action: action
    };

    if (action === 'cancel' && cancellationReason) {
      body.cancellationReason = cancellationReason;
    }

    return this.request('/food-order/modify', { body });
  }

  isTokenExpired(expirationDate) {
    if (!expirationDate) return true;
    const expiry = new Date(expirationDate);
    const now = new Date();
    return now >= expiry;
  }
}

module.exports = new APIClient();