import { logger } from '../utils/logger';

export interface Payment {
  id: string;
  tenantId: string;
  shopId: string;
  amount: number;
  currency: string;
  method: 'credit_card' | 'paypal' | 'bank_transfer';
  status: 'PENDING' | 'COMPLETED' | 'FAILED' | 'REFUNDED';
  type: 'feature' | 'order';
  relatedId: string;
  transactionId: string;
  traceId: string;
  taskId: string;
  businessType: 'TOC' | 'TOB';
  createdAt: Date;
  updatedAt: Date;
}

export interface CreatePaymentParams {
  tenantId: string;
  shopId: string;
  amount: number;
  currency: string;
  method: 'credit_card' | 'paypal' | 'bank_transfer';
  type: 'feature' | 'order';
  relatedId: string;
  traceId: string;
  taskId: string;
  businessType: 'TOC' | 'TOB';
}

export interface PaymentResult {
  success: boolean;
  payment: Payment;
  message: string;
}

export class PaymentService {
  /**
   * 初始化数据库表
   */
  static async initTable() {
    logger.info('🚀 PaymentService table initialized');
    // 这里可以添加数据库表初始化逻辑
  }

  /**
   * 创建支付
   */
  static async createPayment(params: CreatePaymentParams): Promise<Payment> {
    logger.info(`[PaymentService] Creating payment for ${params.type}: ${params.relatedId}`, { traceId: params.traceId });
    
    const payment: Payment = {
      id: 'payment_' + Date.now(),
      tenantId: params.tenantId,
      shopId: params.shopId,
      amount: params.amount,
      currency: params.currency,
      method: params.method,
      status: 'PENDING',
      type: params.type,
      relatedId: params.relatedId,
      transactionId: 'trans_' + Date.now(),
      traceId: params.traceId,
      taskId: params.taskId,
      businessType: params.businessType,
      createdAt: new Date(),
      updatedAt: new Date()
    };
    
    // 这里可以添加创建支付的逻辑
    
    return payment;
  }

  /**
   * 获取支付信息
   */
  static async getPayment(paymentId: string, traceId: string): Promise<Payment | null> {
    logger.info(`[PaymentService] Getting payment: ${paymentId}`, { traceId });
    
    // 这里可以添加获取支付信息的逻辑
    
    // 模拟返回支付信息
    return {
      id: paymentId,
      tenantId: 'tenant_1',
      shopId: 'shop_1',
      amount: 99,
      currency: 'USD',
      method: 'credit_card',
      status: 'PENDING',
      type: 'feature',
      relatedId: 'activation_1',
      transactionId: 'trans_' + Date.now(),
      traceId,
      taskId: 'task_1',
      businessType: 'TOC',
      createdAt: new Date(),
      updatedAt: new Date()
    };
  }

  /**
   * 更新支付状态
   */
  static async updatePaymentStatus(paymentId: string, status: 'PENDING' | 'COMPLETED' | 'FAILED' | 'REFUNDED', traceId: string): Promise<Payment> {
    logger.info(`[PaymentService] Updating payment status: ${paymentId} to ${status}`, { traceId });
    
    // 这里可以添加更新支付状态的逻辑
    
    // 模拟返回更新后的支付信息
    return {
      id: paymentId,
      tenantId: 'tenant_1',
      shopId: 'shop_1',
      amount: 99,
      currency: 'USD',
      method: 'credit_card',
      status,
      type: 'feature',
      relatedId: 'activation_1',
      transactionId: 'trans_' + Date.now(),
      traceId,
      taskId: 'task_1',
      businessType: 'TOC',
      createdAt: new Date(),
      updatedAt: new Date()
    };
  }

  /**
   * 处理支付回调
   */
  static async handlePaymentCallback(paymentId: string, status: 'COMPLETED' | 'FAILED', transactionId: string, traceId: string): Promise<Payment> {
    logger.info(`[PaymentService] Handling payment callback for: ${paymentId}`, { traceId });
    
    // 这里可以添加处理支付回调的逻辑
    
    // 更新支付状态
    const updatedPayment = await this.updatePaymentStatus(paymentId, status, traceId);
    
    return updatedPayment;
  }

  /**
   * 处理支付退款
   */
  static async refundPayment(paymentId: string, amount: number, reason: string, traceId: string): Promise<Payment> {
    logger.info(`[PaymentService] Refunding payment: ${paymentId}`, { traceId });
    
    // 这里可以添加处理支付退款的逻辑
    
    // 更新支付状态为退款
    const updatedPayment = await this.updatePaymentStatus(paymentId, 'REFUNDED', traceId);
    
    return updatedPayment;
  }

  /**
   * 批量处理支付
   */
  static async batchProcessPayments(paymentIds: string[], traceId: string): Promise<Payment[]> {
    logger.info(`[PaymentService] Batch processing ${paymentIds.length} payments`, { traceId });
    
    // 这里可以添加批量处理支付的逻辑
    
    const payments: Payment[] = [];
    for (const paymentId of paymentIds) {
      const payment = await this.updatePaymentStatus(paymentId, 'COMPLETED', traceId);
      payments.push(payment);
    }
    
    return payments;
  }
}
