package internal

import (
	"context"
	"errors"
	"fmt"
	"github.com/wechatpay-apiv3/wechatpay-go/core"
	"github.com/wechatpay-apiv3/wechatpay-go/core/option"
	"github.com/wechatpay-apiv3/wechatpay-go/services/payments/app"
	"github.com/wechatpay-apiv3/wechatpay-go/utils"
	"goutil/logUtilPlus"
	"log"
	_ "paycenter/internal/pay"
	"paycenter/internal/wxpaycofnig"
	_ "paycenter/internal/wxpaycofnig"
	"strconv"
	"time"
)

var (
	mchID                      string = wxpaycofnig.GetWxPayConfig().MchID                      // 商户号
	mchCertificateSerialNumber string = wxpaycofnig.GetWxPayConfig().MchCertificateSerialNumber // 商户证书序列号
	mchAPIv3Key                string = wxpaycofnig.GetWxPayConfig().MchAPIv3Key                // 商户APIv3密钥

)

// Prepay 预支付
func Prepay(outTradeNo int64, description string) (string, error) {

	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := utils.LoadPrivateKeyWithPath("/path/to/merchant/apiclient_key.pem")
	if err != nil {
		logUtilPlus.ErrorLog("load merchant private key error")
		return "", err
	}

	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(mchID, mchCertificateSerialNumber, mchPrivateKey, mchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		logUtilPlus.ErrorLog("new wechat pay client err:%s", err)
		return "", err
	}

	svc := app.AppApiService{Client: client}
	resp, result, err := svc.Prepay(ctx,
		app.PrepayRequest{
			Appid:         core.String("wxd678efh567hg6787"),
			Mchid:         core.String("1230000109"),
			Description:   core.String(description),
			OutTradeNo:    core.String(strconv.FormatInt(outTradeNo, 10)),
			TimeExpire:    core.Time(time.Now()),
			Attach:        core.String("自定义数据说明"),
			NotifyUrl:     core.String("https://www.weixin.qq.com/wxpay/pay.php"),
			GoodsTag:      core.String("WXG"),
			LimitPay:      []string{"LimitPay_example"},
			SupportFapiao: core.Bool(false),
			Amount: &app.Amount{
				Currency: core.String("CNY"),
				Total:    core.Int64(100),
			},
			Detail: &app.Detail{
				CostPrice: core.Int64(608800),
				GoodsDetail: []app.GoodsDetail{app.GoodsDetail{
					GoodsName:        core.String("iPhoneX 256G"),
					MerchantGoodsId:  core.String("ABC"),
					Quantity:         core.Int64(1),
					UnitPrice:        core.Int64(828800),
					WechatpayGoodsId: core.String("1001"),
				}},
				InvoiceId: core.String("wx123"),
			},
			SceneInfo: &app.SceneInfo{
				DeviceId:      core.String("013467007045764"),
				PayerClientIp: core.String("14.23.150.211"),
				StoreInfo: &app.StoreInfo{
					Address:  core.String("广东省深圳市南山区科技中一道10000号"),
					AreaCode: core.String("440305"),
					Id:       core.String("0001"),
					Name:     core.String("腾讯大厦分店"),
				},
			},
			SettleInfo: &app.SettleInfo{
				ProfitSharing: core.Bool(false),
			},
		},
	)

	if err != nil {
		// 处理错误
		logUtilPlus.ErrorLog("call Prepay err:%s", err.Error())
		return "", err
	}

	if result.Response.StatusCode != 200 {
		errStr := fmt.Sprintf("status=%d resp=%s", result.Response.StatusCode, resp)
		logUtilPlus.ErrorLog(errStr)
		return "", errors.New(errStr)
	}

	return *resp.PrepayId, nil
}

// CloseOrder 关闭订单
func CloseOrder() {

	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := utils.LoadPrivateKeyWithPath("/path/to/merchant/apiclient_key.pem")
	if err != nil {
		log.Print("加载商家私钥错误")
	}

	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(mchID, mchCertificateSerialNumber, mchPrivateKey, mchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		log.Printf("新的 WeChat Pay 客户端 Err:%s", err)
	}

	svc := app.AppApiService{Client: client}
	result, err := svc.CloseOrder(ctx,
		app.CloseOrderRequest{

			//商户系统内部订单号，只能是数字、大小写字母_-*且在同一个商户号下唯
			OutTradeNo: core.String("OutTradeNo_example"),

			//直连商户的商户号，由微信支付生成并下发。
			Mchid: core.String("1230000109"),
		},
	)

	if err != nil {
		// 处理错误
		log.Printf("call CloseOrder err:%s", err)
	} else {
		// 处理返回结果
		log.Printf("status=%d", result.Response.StatusCode)
	}
}

// QueryOrderById 根据商户订单号查询订单
func QueryOrderById() {

	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := utils.LoadPrivateKeyWithPath("/path/to/merchant/apiclient_key.pem")
	if err != nil {
		log.Print("load merchant private key error")
	}

	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(mchID, mchCertificateSerialNumber, mchPrivateKey, mchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		log.Printf("new wechat pay client err:%s", err)
	}

	svc := app.AppApiService{Client: client}
	resp, result, err := svc.QueryOrderById(ctx,
		app.QueryOrderByIdRequest{
			TransactionId: core.String("TransactionId_example"),
			Mchid:         core.String("Mchid_example"),
		},
	)

	if err != nil {
		// 处理错误
		log.Printf("call QueryOrderById err:%s", err)
	} else {
		// 处理返回结果
		log.Printf("status=%d resp=%s", result.Response.StatusCode, resp)
	}
}

// QueryOrderByOutTradeNo 根据商户订单号查询订单
func QueryOrderByOutTradeNo() {
	// 使用 utils 提供的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
	mchPrivateKey, err := utils.LoadPrivateKeyWithPath("/path/to/merchant/apiclient_key.pem")
	if err != nil {
		log.Print("load merchant private key error")
	}

	ctx := context.Background()
	// 使用商户私钥等初始化 client，并使它具有自动定时获取微信支付平台证书的能力
	opts := []core.ClientOption{
		option.WithWechatPayAutoAuthCipher(mchID, mchCertificateSerialNumber, mchPrivateKey, mchAPIv3Key),
	}
	client, err := core.NewClient(ctx, opts...)
	if err != nil {
		log.Printf("new wechat pay client err:%s", err)
	}

	svc := app.AppApiService{Client: client}
	resp, result, err := svc.QueryOrderByOutTradeNo(ctx,
		app.QueryOrderByOutTradeNoRequest{
			OutTradeNo: core.String("OutTradeNo_example"),
			Mchid:      core.String("Mchid_example"),
		},
	)

	if err != nil {
		// 处理错误
		log.Printf("call QueryOrderByOutTradeNo err:%s", err)
	} else {
		// 处理返回结果
		log.Printf("status=%d resp=%s", result.Response.StatusCode, resp)
	}
}