package api

import (
	"bytes"
	"encoding/json"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/smartwalle/alipay/v3"
	"io"
	"jypay/errors"
	"jypay/global"
	"jypay/model"
	"jypay/request"
	"jypay/utils"
	"log"
	"net/http"
	"strconv"
	"time"
)

func Index(c *gin.Context) (utils.Data, error) {
	return utils.Data{"hello": "elf"}, nil
}

func Error(c *gin.Context) (utils.Data, error) {
	return nil, errors.NewBusinessError("测试", "1122")
}

func Pay(c *gin.Context) (utils.Data, error) {
	req := request.OrderRequest{}
	err := c.BindJSON(&req)
	if err != nil {
		fmt.Printf("bind json err:%v", err)
		return nil, errors.NewBusinessError("参数错误")
	}

	order, err := saveOrder(req)
	if err != nil {
		return nil, err
	}

	var param = alipay.TradeWapPay{}
	param.OutTradeNo = order.OrderNo
	param.TotalAmount = strconv.FormatFloat(order.PayAmount, 'E', -1, 64)
	param.Subject = order.Subject
	param.NotifyURL = global.Config.Server.Domain + "/notify"
	param.ReturnURL = global.Config.Server.Domain + "/return"
	client, err := alipay.New(global.Config.Alipay.AppId, global.Config.Alipay.PrivateKey, true)
	if err != nil {
		return nil, errors.NewBusinessError("初始化支付宝失败")
	}
	result, err := client.TradeWapPay(param)
	if err != nil {
		return nil, errors.NewBusinessError("请求支付宝失败：" + err.Error())
	}
	fmt.Println(result.String())
	data := utils.Data{
		"pay_url": result.String(),
	}
	return data, nil
}

func saveOrder(req request.OrderRequest) (*model.Order, error) {
	if req.OrderNo == "" {
		return nil, errors.NewBusinessError("订单号[orderNo]不能为空")
	}

	order := model.Order{}
	global.DB.Where("order_no = ?", req.OrderNo).First(&order)

	order.OrderNo = req.OrderNo
	order.UserId = req.UserId
	order.UserAccount = req.UserAccount
	order.GameId = req.GameId
	order.GameName = req.GameName
	order.ServerId = req.ServerId
	order.ServerName = req.ServerName
	order.Subject = req.Subject
	order.RoleId = req.RoleId
	order.RoleName = req.RoleName
	order.PayAmount = float64(req.PayAmount) / 100
	order.NotifyUrl = req.NotifyUrl
	order.ReturnUrl = req.ReturnUrl
	order.PromoteId = req.PromoteId
	order.PromoteAccount = req.PromoteAccount
	order.PayStatus = 0

	result := global.DB.Create(&order)
	if result.Error != nil {
		return nil, errors.NewBusinessError("数据异常")
	}

	return &order, nil
}

func Notify(c *gin.Context) {
	err := c.Request.ParseForm()
	if err != nil {
		log.Printf("参数错误:%v", err)
		return
	}
	client, err := alipay.New(global.Config.Alipay.AppId, global.Config.Alipay.PrivateKey, true)
	if err != nil {
		log.Printf("初始化支付宝失败:%v", err)
		return
	}
	notification, err := client.DecodeNotification(c.Request.Form)
	if err != nil {
		log.Printf("解析异步通知发生错误:%v", err)
		return
	}
	order := model.Order{}
	tx := global.DB.Where("order_no = ?", notification.OutTradeNo).First(&order)
	if tx.Error != nil {
		log.Printf("订单不存在:%s", notification.OutTradeNo)
		return
	}
	now := time.Now()
	if notification.TradeStatus == "TRADE_SUCCESS" || notification.TradeStatus == "TRADE_FINISHED" {
		order.PayStatus = 1
		order.PayTime = &now
		tx := global.DB.Save(order)
		if tx.Error != nil {
			log.Printf("更新订单失败:%s", notification.OutTradeNo)
			return
		}
	}
	notifyData := make(map[string]interface{})
	notifyData["trade_no"] = notification.TradeNo
	notifyData["out_trade_no"] = notification.OutTradeNo
	notifyData["trade_status"] = notification.TradeStatus
	notifyData["total_amount"] = notification.TotalAmount
	notifyResult := postToSdk(order.NotifyUrl, notifyData)
	if notifyResult == "success" {
		client.ACKNotification(c.Writer)
	}
}

func postToSdk(url string, data map[string]interface{}) string {
	content, err := json.Marshal(data)
	if err != nil {
		log.Fatalf("无法编码JSON数据：%v", err)
		return "fail"
	}

	client := &http.Client{}

	req, err := http.NewRequest("POST", url, bytes.NewBuffer(content))
	if err != nil {
		log.Fatalf("无法创建新的请求：%v", err)
		return "fail"
	}

	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		log.Fatalf("无法发送POST请求：%v", err)
		return "fail"
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		log.Fatalf("无法读取响应体内容：%v", err)
		return "fail"
	}

	return string(body)
}

func Return(c *gin.Context) {
	var req request.ReturnRequest
	// 将路由参数绑定到结构体中
	if err := c.ShouldBindUri(&req); err != nil {
		c.Writer.WriteHeader(http.StatusOK)
		c.Writer.Write([]byte("参数错误"))
		return
	}
	order := model.Order{}
	tx := global.DB.Where("order_no = ?", req.OrderNo).First(&order)
	if tx.Error != nil {
		c.Writer.WriteHeader(http.StatusOK)
		c.Writer.Write([]byte("订单不存在"))
		return
	}

	c.Redirect(http.StatusFound, order.ReturnUrl)
}