package com.ruoyi.payment.infrastructure.channel.alipay;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePrecreateRequest;
import com.alipay.api.request.AlipayTradeQueryRequest;
import com.alipay.api.request.AlipayTradeCloseRequest;
import com.alipay.api.response.AlipayTradePrecreateResponse;
import com.alipay.api.response.AlipayTradeQueryResponse;
import com.alipay.api.response.AlipayTradeCloseResponse;
import com.ruoyi.payment.domain.model.GoodsDetail;
import com.ruoyi.payment.domain.model.PaymentOrder;
import com.ruoyi.payment.infrastructure.config.AlipayConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;

/**
 * 支付宝当面付客户端
 * 
 * @author ruoyi
 */
@Slf4j
@Component
public class AlipayF2FClient {

    @Autowired
    private AlipayConfig alipayConfig;

    private AlipayClient alipayClient;

    /**
     * 初始化支付宝客户端
     */
    @PostConstruct
    public void init() {
        alipayClient = new DefaultAlipayClient(
            alipayConfig.getServerUrl(),
            alipayConfig.getAppId(),
            alipayConfig.getPrivateKey(),
            "json",
            "UTF-8",
            alipayConfig.getAlipayPublicKey(),
            alipayConfig.getSignType()
        );
        log.info("支付宝客户端初始化成功");
    }

    /**
     * 当面付下单 - 生成二维码
     */
    public String precreate(PaymentOrder order) throws AlipayApiException {
        log.info("调用支付宝当面付下单接口，订单ID: {}", order.getId());

        AlipayTradePrecreateRequest request = new AlipayTradePrecreateRequest();
        request.setNotifyUrl(alipayConfig.getNotifyUrl());

        // 构造业务参数
        StringBuilder bizContent = new StringBuilder();
        bizContent.append("{");
        bizContent.append("\"out_trade_no\":\"").append(order.getId()).append("\","); // 商户订单号
        bizContent.append("\"total_amount\":\"").append(formatAmount(order.getAmount())).append("\","); // 订单金额，单位：元
        bizContent.append("\"subject\":\"").append(order.getSubject()).append("\""); // 订单标题
        
        // 添加商品明细列表
        if (order.getGoodsDetails() != null && !order.getGoodsDetails().isEmpty()) {
            bizContent.append(",\"goods_detail\":[");
            for (int i = 0; i < order.getGoodsDetails().size(); i++) {
                if (i > 0) {
                    bizContent.append(",");
                }
                bizContent.append("{");
                bizContent.append("\"goods_id\":\"").append(order.getGoodsDetails().get(i).getGoodsId()).append("\",");
                bizContent.append("\"goods_name\":\"").append(order.getGoodsDetails().get(i).getGoodsName()).append("\",");
                bizContent.append("\"quantity\":").append(order.getGoodsDetails().get(i).getQuantity()).append(",");
                bizContent.append("\"price\":\"").append(formatAmount(order.getGoodsDetails().get(i).getPrice())).append("\"");
                
                // 添加可选的商品类别和描述
                if (order.getGoodsDetails().get(i).getGoodsCategory() != null && !order.getGoodsDetails().get(i).getGoodsCategory().isEmpty()) {
                    bizContent.append(",\"goods_category\":\"").append(order.getGoodsDetails().get(i).getGoodsCategory()).append("\"");
                }
                
                if (order.getGoodsDetails().get(i).getBody() != null && !order.getGoodsDetails().get(i).getBody().isEmpty()) {
                    bizContent.append(",\"body\":\"").append(order.getGoodsDetails().get(i).getBody()).append("\"");
                }
                
                bizContent.append("}");
            }
            bizContent.append("]");
        }
        
        if (order.getDescription() != null && !order.getDescription().isEmpty()) {
            bizContent.append(",\"body\":\"").append(order.getDescription()).append("\"");
        }
        
        // 设置超时时间
        bizContent.append(",\"timeout_express\":\"30m\"");
        
        bizContent.append("}");

        request.setBizContent(bizContent.toString());
        log.info("支付宝当面付请求参数: {}", bizContent.toString());

        // 调用SDK
        AlipayTradePrecreateResponse response = alipayClient.execute(request);

        if (!response.isSuccess()) {
            log.error("支付宝当面付下单失败: {}, {}", response.getSubCode(), response.getSubMsg());
            throw new AlipayApiException("支付宝当面付下单失败: " + response.getSubMsg());
        }

        String qrCode = response.getQrCode();
        if (qrCode == null || qrCode.isEmpty()) {
            throw new AlipayApiException("支付宝未返回二维码");
        }

        log.info("支付宝当面付下单成功，qrCode: {}", qrCode);
        return qrCode;
    }

    /**
     * 查询订单
     */
    public AlipayTradeQueryResponse queryOrder(String outTradeNo) throws AlipayApiException {
        log.info("查询支付宝订单，商户订单号: {}", outTradeNo);

        AlipayTradeQueryRequest request = new AlipayTradeQueryRequest();
        request.setBizContent("{\"out_trade_no\":\"" + outTradeNo + "\"}");

        AlipayTradeQueryResponse response = alipayClient.execute(request);

        if (!response.isSuccess()) {
            log.error("查询支付宝订单失败: {}, {}", response.getSubCode(), response.getSubMsg());
            throw new AlipayApiException("查询订单失败: " + response.getSubMsg());
        }

        log.info("查询支付宝订单成功，交易状态: {}", response.getTradeStatus());
        return response;
    }

    /**
     * 关闭订单
     */
    public void closeOrder(String outTradeNo) throws AlipayApiException {
        log.info("关闭支付宝订单，商户订单号: {}", outTradeNo);

        AlipayTradeCloseRequest request = new AlipayTradeCloseRequest();
        request.setBizContent("{\"out_trade_no\":\"" + outTradeNo + "\"}");

        AlipayTradeCloseResponse response = alipayClient.execute(request);

        if (!response.isSuccess()) {
            log.error("关闭支付宝订单失败: {}, {}", response.getSubCode(), response.getSubMsg());
            throw new AlipayApiException("关闭订单失败: " + response.getSubMsg());
        }

        log.info("关闭支付宝订单成功");
    }

    /**
     * 格式化金额：分转元，保留两位小数
     */
    private String formatAmount(Integer amountInCents) {
        BigDecimal amount = new BigDecimal(amountInCents).divide(new BigDecimal(100), 2, BigDecimal.ROUND_HALF_UP);
        return amount.toString();
    }
}