[feature] Format the code and improve Mini Program authorization to o… (#473)

* [feature] Format the code and improve Mini Program authorization to obtain openid（miniprogram/auth/auth.go Code2Session）

* [feature] CheckEncryptedData (https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/user-info/auth.checkEncryptedData.html)

* upgrade json error

* upgrade json error

Co-authored-by: houseme <houseme@outlook.com>

pay/config/config.go

@@ -1,6 +1,6 @@
 package config
 
-// Config config for pay
+// Config .config for pay
 type Config struct {
 	AppID     string `json:"app_id"`
 	MchID     string `json:"mch_id"`

pay/notify/notify.go

@@ -4,12 +4,12 @@ import (
 	"github.com/silenceper/wechat/v2/pay/config"
 )
 
-//Notify 回调
+// Notify 回调
 type Notify struct {
 	*config.Config
 }
 
-//NewNotify new
+// NewNotify new
 func NewNotify(cfg *config.Config) *Notify {
 	return &Notify{cfg}
 }

pay/order/pay.go

@@ -172,9 +172,9 @@ func (o *Order) BridgeConfig(p *Params) (cfg Config, err error) {
 // BridgeAppConfig get app bridge config
 func (o *Order) BridgeAppConfig(p *Params) (cfg ConfigForApp, err error) {
 	var (
-		timestamp string = strconv.FormatInt(time.Now().Unix(), 10)
-		noncestr  string = util.RandomStr(32)
-		_package  string = "Sign=WXPay"
+		timestamp = strconv.FormatInt(time.Now().Unix(), 10)
+		noncestr  = util.RandomStr(32)
+		_package  = "Sign=WXPay"
 	)
 	order, err := o.PrePayOrder(p)
 	if err != nil {

pay/pay.go

@@ -8,12 +8,12 @@ import (
 	"github.com/silenceper/wechat/v2/pay/transfer"
 )
 
-//Pay 微信支付相关API
+// Pay 微信支付相关API
 type Pay struct {
 	cfg *config.Config
 }
 
-//NewPay 实例化微信支付相关API
+// NewPay 实例化微信支付相关API
 func NewPay(cfg *config.Config) *Pay {
 	return &Pay{cfg}
 }

pay/transfer/transfer_wallet.go

@@ -24,7 +24,7 @@ func NewTransfer(cfg *config.Config) *Transfer {
 	return &transfer
 }
 
-//Params 调用参数
+// Params 调用参数
 type Params struct {
 	DeviceInfo     string
 	PartnerTradeNo string
@@ -34,10 +34,10 @@ type Params struct {
 	Amount         int
 	Desc           string
 	SpbillCreateIP string
-	RootCa         string //ca证书
+	RootCa         string // ca证书
 }
 
-//request 接口请求参数
+// request 接口请求参数
 type request struct {
 	AppID          string `xml:"mch_appid"`
 	MchID          string `xml:"mchid"`
@@ -53,7 +53,7 @@ type request struct {
 	SpbillCreateIP string `xml:"spbill_create_ip,omitempty"`
 }
 
-//Response 接口返回
+// Response 接口返回
 type Response struct {
 	ReturnCode     string `xml:"return_code"`
 	ReturnMsg      string `xml:"return_msg"`
@@ -69,7 +69,7 @@ type Response struct {
 	PaymentTime    string `xml:"payment_time"`
 }
 
-//WalletTransfer 付款到零钱
+// WalletTransfer 付款到零钱
 func (transfer *Transfer) WalletTransfer(p *Params) (rsp Response, err error) {
 	nonceStr := util.RandomStr(32)
 	param := make(map[string]string)