增加开放平台授权方小程序登录

openplatform/miniprogram/auth/auth.go

@@ -0,0 +1,60 @@
+package auth
+
+import (
+	stdContext "context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/silenceper/wechat/v2/openplatform/context"
+	"github.com/silenceper/wechat/v2/util"
+)
+
+const (
+	code2SessionURL = "https://api.weixin.qq.com/sns/component/jscode2session?appid=%s&js_code=%s&grant_type=authorization_code&component_appid=%s&component_access_token=%s"
+)
+
+// Auth 登录/用户信息
+type Auth struct {
+	*context.Context
+	authorizerAppID string
+}
+
+// NewAuth new auth (授权方appID)
+func NewAuth(ctx *context.Context, appID string) *Auth {
+	return &Auth{ctx, appID}
+}
+
+// ResCode2Session 登录凭证校验的返回结果
+type ResCode2Session struct {
+	util.CommonError
+	OpenID     string `json:"openid"`      // 用户唯一标识
+	SessionKey string `json:"session_key"` // 会话密钥
+	UnionID    string `json:"unionid"`     // 用户在开放平台的唯一标识符，在满足UnionID下发条件的情况下会返回
+}
+
+// Code2Session 登录凭证校验。
+func (auth *Auth) Code2Session(jsCode string) (result ResCode2Session, err error) {
+	return auth.Code2SessionContext(stdContext.Background(), jsCode)
+}
+
+// Code2SessionContext 登录凭证校验。
+func (auth *Auth) Code2SessionContext(ctx stdContext.Context, jsCode string) (result ResCode2Session, err error) {
+	var response []byte
+	var componentAccessToken string
+	componentAccessToken, err = auth.GetComponentAccessToken()
+	if err != nil {
+		return
+	}
+	parse := fmt.Sprintf(code2SessionURL, auth.authorizerAppID, jsCode, auth.Context.AppID, componentAccessToken)
+	if response, err = util.HTTPGetContext(ctx, parse); err != nil {
+		return
+	}
+	if err = json.Unmarshal(response, &result); err != nil {
+		return
+	}
+	if result.ErrCode != 0 {
+		err = fmt.Errorf("Code2Session error : errcode=%v , errmsg=%v", result.ErrCode, result.ErrMsg)
+		return
+	}
+	return
+}

openplatform/miniprogram/miniprogram.go

@@ -9,6 +9,7 @@ import (
 	miniContext "github.com/silenceper/wechat/v2/miniprogram/context"
 	"github.com/silenceper/wechat/v2/miniprogram/urllink"
 	openContext "github.com/silenceper/wechat/v2/openplatform/context"
+	"github.com/silenceper/wechat/v2/openplatform/miniprogram/auth"
 	"github.com/silenceper/wechat/v2/openplatform/miniprogram/basic"
 	"github.com/silenceper/wechat/v2/openplatform/miniprogram/component"
 )
@@ -72,6 +73,11 @@ func (miniProgram *MiniProgram) GetURLLink() *urllink.URLLink {
 	})
 }
 
+// GetAuth 登录/用户信息相关接口
+func (miniProgram *MiniProgram) GetAuth() *auth.Auth {
+	return auth.NewAuth(miniProgram.openContext, miniProgram.AppID)
+}
+
 // DefaultAuthrAccessToken 默认获取授权ak的方法
 type DefaultAuthrAccessToken struct {
 	opCtx *openContext.Context