package com.example.demo.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * PayPal支付控制器
 * 基于IJPay实现
 */
@RestController
@RequestMapping("/api/payments/paypal")
public class PayPalController {

    private static final Logger logger = LoggerFactory.getLogger(PayPalController.class);



    /**
     * 创建支付订单
     */
    @PostMapping("/create-order")
    public ResponseEntity<Map<String, Object>> createOrder(@RequestParam String outTradeNo,
                                                          @RequestParam String totalAmount,
                                                          @RequestParam String subject,
                                                          @RequestParam String body) {
        Map<String, Object> response = new HashMap<>();
        try {
            // TODO: 实现PayPal订单创建逻辑
            // 这里需要根据实际的PayPal API进行实现
            response.put("success", true);
            response.put("message", "PayPal订单创建功能待实现");
            response.put("outTradeNo", outTradeNo);
            response.put("totalAmount", totalAmount);
            response.put("subject", subject);
            logger.info("PayPal订单创建请求: outTradeNo={}, totalAmount={}", outTradeNo, totalAmount);
        } catch (Exception e) {
            logger.error("PayPal订单创建失败", e);
            response.put("success", false);
            response.put("message", "订单创建失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }

    /**
     * 捕获支付
     */
    @PostMapping("/capture")
    public ResponseEntity<Map<String, Object>> captureOrder(@RequestParam String orderId) {
        Map<String, Object> response = new HashMap<>();
        try {
            // TODO: 实现PayPal支付捕获逻辑
            response.put("success", true);
            response.put("message", "PayPal支付捕获功能待实现");
            response.put("orderId", orderId);
            logger.info("PayPal支付捕获请求: orderId={}", orderId);
        } catch (Exception e) {
            logger.error("PayPal支付捕获失败", e);
            response.put("success", false);
            response.put("message", "支付捕获失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }

    /**
     * 查询订单
     */
    @GetMapping("/query")
    public ResponseEntity<Map<String, Object>> queryOrder(@RequestParam String orderId) {
        Map<String, Object> response = new HashMap<>();
        try {
            // TODO: 实现PayPal订单查询逻辑
            response.put("success", true);
            response.put("message", "PayPal订单查询功能待实现");
            response.put("orderId", orderId);
            logger.info("PayPal订单查询请求: orderId={}", orderId);
        } catch (Exception e) {
            logger.error("PayPal订单查询失败", e);
            response.put("success", false);
            response.put("message", "订单查询失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }

    /**
     * 退款
     */
    @PostMapping("/refund")
    public ResponseEntity<Map<String, Object>> refund(@RequestParam String captureId,
                                                     @RequestParam String refundAmount,
                                                     @RequestParam String refundReason) {
        Map<String, Object> response = new HashMap<>();
        try {
            // TODO: 实现PayPal退款逻辑
            response.put("success", true);
            response.put("message", "PayPal退款功能待实现");
            response.put("captureId", captureId);
            response.put("refundAmount", refundAmount);
            logger.info("PayPal退款请求: captureId={}, amount={}", captureId, refundAmount);
        } catch (Exception e) {
            logger.error("PayPal退款失败", e);
            response.put("success", false);
            response.put("message", "退款失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }

    /**
     * 支付成功回调
     */
    @GetMapping("/return")
    public ResponseEntity<Map<String, Object>> returnUrl(HttpServletRequest request) {
        Map<String, Object> response = new HashMap<>();
        try {
            String token = request.getParameter("token");
            String payerId = request.getParameter("PayerID");
            
            logger.info("PayPal支付成功回调: token={}, payerId={}", token, payerId);
            
            response.put("success", true);
            response.put("message", "PayPal支付回调功能待实现");
            response.put("token", token);
            response.put("payerId", payerId);
        } catch (Exception e) {
            logger.error("PayPal支付回调处理失败", e);
            response.put("success", false);
            response.put("message", "支付处理失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }

    /**
     * 支付取消回调
     */
    @GetMapping("/cancel")
    public ResponseEntity<Map<String, Object>> cancelUrl(HttpServletRequest request) {
        Map<String, Object> response = new HashMap<>();
        try {
            String token = request.getParameter("token");
            logger.info("PayPal支付取消: token={}", token);
            
            response.put("success", false);
            response.put("message", "PayPal支付取消功能待实现");
            response.put("token", token);
        } catch (Exception e) {
            logger.error("PayPal支付取消处理失败", e);
            response.put("success", false);
            response.put("message", "支付取消处理失败: " + e.getMessage());
        }
        return ResponseEntity.ok(response);
    }
}
