102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
package minigame
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import (
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"backend/client"
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"backend/msg"
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"crypto/md5"
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"fmt"
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"reflect"
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"sort"
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"strings"
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"github.com/gin-gonic/gin"
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)
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type RewardRequest struct {
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AppId int `json:"appId" form:"appId" binding:"required" description:"cp应用ID"`
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ServerId int `json:"serverId" form:"serverId" binding:"required" description:"cp服务器ID"`
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UserID int64 `json:"userId" form:"userId" binding:"required" description:"用户uid"`
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GameID int32 `json:"gameId" form:"gameId" binding:"required" description:"小游戏ID"`
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TimeStamp int64 `json:"timeStamp" form:"timeStamp" binding:"required" description:"时间戳，单位毫秒"`
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Score int32 `json:"score" form:"score" binding:"required" description:"游戏得分"`
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Code string `json:"code" form:"code" binding:"required" description:"回调签名"`
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}
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const (
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APP_KEY = "8001bd25832553c39d4b443f56480841"
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)
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func Reward(c *gin.Context) {
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var req RewardRequest
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if err := c.ShouldBind(&req); err != nil {
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c.JSON(400, gin.H{"error": err.Error()})
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return
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}
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expectedCode := req.Sign()
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if expectedCode != req.Code {
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c.JSON(400, gin.H{"error": "invalid code"})
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return
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}
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res, err := client.MiniGame(req.AppId, req.ServerId, &msg.ReqMiniGame{
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Uid: req.UserID,
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Id: req.GameID,
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Score: req.Score,
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})
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if err != nil {
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c.JSON(500, gin.H{"error": err.Error()})
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return
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}
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c.JSON(200, gin.H{"reward": res})
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}
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func (r *RewardRequest) Sign() string {
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// 收集参数到 map[key]=string(value)
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params := make(map[string]string)
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val := reflect.ValueOf(*r)
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typ := reflect.TypeOf(*r)
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for i := 0; i < typ.NumField(); i++ {
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field := typ.Field(i)
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// 使用 json tag 作为键名，若为空则 fallback 到字段名
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tag := field.Tag.Get("json")
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key := strings.Split(tag, ",")[0]
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if key == "" {
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key = field.Name
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}
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// 排除 code
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if key == "code" {
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continue
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}
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fv := val.Field(i)
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var s string
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if fv.Kind() == reflect.String {
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s = fv.String()
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} else {
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s = fmt.Sprintf("%v", fv.Interface())
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}
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params[key] = s
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}
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// 排序键名
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keys := make([]string, 0, len(params))
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for k := range params {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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// 拼接签名源字符串
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var b strings.Builder
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for i, k := range keys {
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if i > 0 {
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b.WriteByte('&')
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}
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b.WriteString(k)
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b.WriteByte('=')
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b.WriteString(params[k])
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}
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checkstr := b.String()
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checkstr = APP_KEY + checkstr + APP_KEY
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// 计算 MD5 并返回小写十六进制字符串
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sum := md5.Sum([]byte(checkstr))
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return fmt.Sprintf("%x", sum)
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}
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