feat: group message support specify target (#121)

* feat: group message support specify target

* chore: remove text for customized descriptions like i18n

* fix: update priority

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

channel/email.go

@@ -23,7 +23,7 @@ func SendEmailMessage(message *model.Message, user *model.User, channel_ *model.
 	if subject == common.SystemName || subject == "" {
 		subject = message.Description
 	} else {
-		content = fmt.Sprintf("描述：%s\n\n%s", message.Description, message.Content)
+		content = fmt.Sprintf("%s\n\n%s", message.Description, message.Content)
 	}
 	var err error
 	message.HTMLContent, err = common.Markdown2HTML(content)

channel/group.go

@@ -9,7 +9,12 @@ import (
 
 func SendGroupMessage(message *model.Message, user *model.User, channel_ *model.Channel) error {
 	subChannels := strings.Split(channel_.AppId, "|")
-	subTargets := strings.Split(channel_.AccountId, "|")
+	var subTargets []string
+	if message.To != "" {
+		subTargets = strings.Split(message.To, "|")
+	} else {
+		subTargets = strings.Split(channel_.AccountId, "|")
+	}
 	if len(subChannels) != len(subTargets) {
 		return errors.New("无效的群组消息配置，子通道数量与子目标数量不一致")
 	}