feat: 添加帮助功能

handler/handler.go

@@ -8,10 +8,13 @@ import (
 )
 
 type Handler func(msg model.Message) (reply model.Reply)
+type TryCatchHandler func(msg model.Message) (reply model.Reply, catched bool)
 
 var handlers = make(map[string]Handler)
 var frontMatchHandlers = make(map[string]Handler)
-var liveHandlers = make(map[int64]map[int64]Handler)
+var liveHandlers = make(map[int64]map[int64]TryCatchHandler)
+var livePrivateHandlers = make(map[int64]TryCatchHandler)
+var HelpInforms = make(map[string]string)
 var privateAllHandler Handler
 
 func RegisterPrivateHandler(handler Handler) {
@@ -26,9 +29,13 @@ func RegisterFrontMatchHandler(trigger string, handler Handler) {
 	frontMatchHandlers[trigger] = handler
 }
 
-func RegisterLiveHandler(groupID int64, userID int64, handler Handler) { //userID=-1 means for all users in groupID
+func RegisterLiveHandler(groupID int64, userID int64, handler TryCatchHandler) { //userID=-1 means for all users in groupID
+	if groupID == 0 {
+		livePrivateHandlers[userID] = handler
+		return
+	}
 	if _, ok := liveHandlers[groupID]; !ok {
-		liveHandlers[groupID] = make(map[int64]Handler)
+		liveHandlers[groupID] = make(map[int64]TryCatchHandler)
 	}
 	liveHandlers[groupID][userID] = handler
 }
@@ -51,8 +58,18 @@ func MsgInHandler(msg model.Message) (reply model.Reply) {
 	}()
 	if handlerUserID, ok := liveHandlers[msg.GroupInfo.GroupId]; ok {
 		if handler, ok := handlerUserID[msg.UserId]; ok {
-			liveHandlers[msg.GroupInfo.GroupId][msg.UserId] = nil
-			return handler(msg)
+			defer func() { liveHandlers[msg.GroupInfo.GroupId][msg.UserId] = nil }()
+			reply, catched := handler(msg)
+			if catched {
+				return reply
+			}
+		}
+	}
+	if handler, ok := livePrivateHandlers[msg.UserId]; ok {
+		defer func() { livePrivateHandlers[msg.UserId] = nil }()
+		reply, catched := handler(msg)
+		if catched {
+			return reply
 		}
 	}
 	for trigger, handler := range frontMatchHandlers {
@@ -69,3 +86,7 @@ func MsgInHandler(msg model.Message) (reply model.Reply) {
 	}
 	return model.Reply{}
 }
+
+func RegisterHelpInform(triggerName string, inform string) {
+	HelpInforms[triggerName] = inform
+}