/**
 * NocoDB Client for Server
 * Simple REST API client for NocoDB operations
 */

class NocoDBClient {
  constructor() {
    this.config = {
      baseUrl: process.env.NOCODB_BASE_URL || '',
      baseId: process.env.NOCODB_BASE_ID || '',
      apiKey: process.env.NOCODB_API_KEY || '',
      ordersTableId: process.env.NOCODB_ORDERS_TABLE_ID || '',
    };

    // Check configuration completeness
    const missingVars = [];
    if (!this.config.baseUrl) missingVars.push('NOCODB_BASE_URL');
    if (!this.config.baseId) missingVars.push('NOCODB_BASE_ID');
    if (!this.config.apiKey) missingVars.push('NOCODB_API_KEY');
    if (!this.config.ordersTableId) missingVars.push('NOCODB_ORDERS_TABLE_ID');

    if (missingVars.length > 0) {
      console.warn('⚠️  NocoDB configuration incomplete. Missing variables:', missingVars.join(', '));
      console.warn('   Database integration will be disabled.');
    } else {
      console.log('✅ NocoDB client initialized successfully');
      console.log(`   Base URL: ${this.config.baseUrl}`);
      console.log(`   Table ID: ${this.config.ordersTableId}`);
    }

    this.baseUrl = `${this.config.baseUrl}/api/v2/tables/${this.config.ordersTableId}/records`;
  }

  /**
   * Make authenticated request to NocoDB
   */
  async request(endpoint, options = {}) {
    const url = endpoint.startsWith('http') ? endpoint : `${this.baseUrl}${endpoint}`;

    const response = await fetch(url, {
      ...options,
      headers: {
        'xc-token': this.config.apiKey,
        'Content-Type': 'application/json',
        ...options.headers,
      },
    });

    if (!response.ok) {
      const errorText = await response.text();
      throw new Error(`NocoDB request failed: ${response.status} - ${errorText}`);
    }

    return response.json();
  }

  /**
   * Create new order record
   */
  async createOrder(orderData) {
    return this.request('', {
      method: 'POST',
      body: JSON.stringify(orderData),
    });
  }

  /**
   * Update order fields
   * NocoDB v2 API requires the ID in the body, not the URL
   */
  async updateOrder(recordId, data) {
    return this.request('', {
      method: 'PATCH',
      body: JSON.stringify({
        Id: recordId,
        ...data,
      }),
    });
  }

  /**
   * Find order by orderId field
   */
  async findOrderByOrderId(orderId) {
    const params = new URLSearchParams();
    params.append('where', `(orderId,eq,${orderId})`);
    params.append('limit', '1');

    const response = await this.request(`?${params.toString()}`);
    return response.list?.[0] || null;
  }

  /**
   * Update order with Wren fulfillment data
   */
  async updateOrderFulfillment(orderId, fulfillmentData) {
    // First find the NocoDB record ID
    const order = await this.findOrderByOrderId(orderId);

    if (!order) {
      throw new Error(`Order not found in NocoDB: ${orderId}`);
    }

    // Update the record
    return this.updateOrder(order.Id, fulfillmentData);
  }

  /**
   * Check if NocoDB is configured
   */
  isConfigured() {
    return !!(this.config.baseUrl && this.config.baseId && this.config.apiKey && this.config.ordersTableId);
  }
}

// Export singleton instance
export const nocodbClient = new NocoDBClient();