feat：完善网站活动报名信息

app/api/website/controller/activity.go

@@ -4,7 +4,9 @@ import (
 	"SciencesServer/app/api/website/model"
 	"SciencesServer/app/basic/controller"
 	model2 "SciencesServer/app/common/model"
+	"SciencesServer/app/service"
 	"SciencesServer/app/session"
+	"SciencesServer/config"
 	"errors"
 )
 
@@ -101,10 +103,23 @@ func (c *Activity) Join(id uint64) error {
 	} else if !isExist {
 		return errors.New("操作错误，活动信息不存在或已被删除")
 	}
+
 	if !mActivityInstance.IsCanJoin() {
 		return errors.New("操作错误，当前活动信息不可报名")
 	}
+	// 查看当前活动是否报名
+	var count int64
 
+	if err = model2.Count(model.NewActivityJoin().ActivityJoin, &count, model2.NewWhere("identity_id", c.IdentityUID),
+		model2.NewWhere("activity_id", id), model2.NewWhere("status", model2.ActivityJoinStatusForSuccess)); err != nil {
+		return err
+	}
+	if count > 0 {
+		return errors.New("操作错误，不可重复报名")
+	}
+	if mActivityInstance.Mode == model2.ActivityInstanceModeForOrdinary {
+		service.Publish(config.EventForActivityJoinProduce, c.IdentityUID, c.UID)
+	}
 	return nil
 }