package com.example.demo.config;

import com.paypal.base.rest.APIContext;
import com.paypal.base.rest.OAuthTokenCredential;
import com.paypal.base.rest.PayPalRESTException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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

/**
 * PayPal配置类
 * 配置PayPal SDK和API上下文
 */
@Configuration
public class PayPalConfig {
    
    private static final Logger logger = LoggerFactory.getLogger(PayPalConfig.class);
    
    @Value("${paypal.client-id:}")
    private String clientId;
    
    @Value("${paypal.client-secret:}")
    private String clientSecret;
    
    @Value("${paypal.mode:sandbox}")
    private String mode;
    
    @Value("${paypal.success-url:https://vionow.com/api/payment/paypal/success}")
    private String successUrl;
    
    @Value("${paypal.cancel-url:https://vionow.com/api/payment/paypal/cancel}")
    private String cancelUrl;
    
    // CNY到USD的汇率配置，默认7.2（即1美元=7.2人民币）
    @Value("${paypal.exchange-rate:7.2}")
    private double exchangeRate;
    
    /**
     * 创建PayPal API上下文
     * @return API上下文对象
     */
    @Bean
    public APIContext apiContext() {
        try {
            // 验证配置
            if (clientId == null || clientId.isEmpty()) {
                logger.warn("PayPal Client ID未配置，PayPal功能将不可用");
                return null;
            }
            
            if (clientSecret == null || clientSecret.isEmpty()) {
                logger.warn("PayPal Client Secret未配置，PayPal功能将不可用");
                return null;
            }
            
            logger.info("=== 初始化PayPal配置 ===");
            logger.info("Client ID: {}...", clientId.substring(0, Math.min(10, clientId.length())));
            logger.info("Mode: {}", mode);
            logger.info("Success URL: {}", successUrl);
            logger.info("Cancel URL: {}", cancelUrl);
            
            // 创建PayPal配置
            Map<String, String> configMap = new HashMap<>();
            configMap.put("mode", mode);
            
            // 创建OAuth凭证
            OAuthTokenCredential credential = new OAuthTokenCredential(clientId, clientSecret, configMap);
            
            // 创建API上下文
            APIContext context = new APIContext(credential.getAccessToken());
            context.setConfigurationMap(configMap);
            
            logger.info("✅ PayPal配置初始化成功");
            
            return context;
            
        } catch (PayPalRESTException e) {
            logger.error("❌ PayPal配置初始化失败", e);
            logger.error("错误信息: {}", e.getMessage());
            logger.error("详细错误: {}", e.getDetails());
            return null;
        } catch (Exception e) {
            logger.error("❌ PayPal配置初始化失败", e);
            return null;
        }
    }
    
    // Getters
    public String getClientId() {
        return clientId;
    }
    
    public String getClientSecret() {
        return clientSecret;
    }
    
    public String getMode() {
        return mode;
    }
    
    public String getSuccessUrl() {
        return successUrl;
    }
    
    public String getCancelUrl() {
        return cancelUrl;
    }
    
    public double getExchangeRate() {
        return exchangeRate;
    }
}