backend/internal/handler/websocket_handler.go

package handler

import (
	"context"
	"encoding/json"
	"log"
	"net/http"
	"strconv"
	"strings"
	"time"

	"carrot_bbs/internal/dto"
	"carrot_bbs/internal/model"
	ws "carrot_bbs/internal/pkg/websocket"
	"carrot_bbs/internal/repository"
	"carrot_bbs/internal/service"

	"github.com/gin-gonic/gin"
	"github.com/gorilla/websocket"
)

var upgrader = websocket.Upgrader{
	ReadBufferSize:  1024,
	WriteBufferSize: 1024,
	CheckOrigin: func(r *http.Request) bool {
		return true // 允许所有来源，生产环境应该限制
	},
}

// WebSocketHandler WebSocket处理器
type WebSocketHandler struct {
	jwtService   *service.JWTService
	chatService  service.ChatService
	groupService service.GroupService
	groupRepo    repository.GroupRepository
	userRepo     *repository.UserRepository
	wsManager    *ws.WebSocketManager
}

// NewWebSocketHandler 创建WebSocket处理器
func NewWebSocketHandler(
	jwtService *service.JWTService,
	chatService service.ChatService,
	groupService service.GroupService,
	groupRepo repository.GroupRepository,
	userRepo *repository.UserRepository,
	wsManager *ws.WebSocketManager,
) *WebSocketHandler {
	return &WebSocketHandler{
		jwtService:   jwtService,
		chatService:  chatService,
		groupService: groupService,
		groupRepo:    groupRepo,
		userRepo:     userRepo,
		wsManager:    wsManager,
	}
}

// HandleWebSocket 处理WebSocket连接
func (h *WebSocketHandler) HandleWebSocket(c *gin.Context) {
	// 调试：打印请求头信息
	log.Printf("[WebSocket] 收到请求: Method=%s, Path=%s", c.Request.Method, c.Request.URL.Path)
	log.Printf("[WebSocket] 请求头: Connection=%s, Upgrade=%s",
		c.GetHeader("Connection"),
		c.GetHeader("Upgrade"))
	log.Printf("[WebSocket] Sec-WebSocket-Key=%s, Sec-WebSocket-Version=%s",
		c.GetHeader("Sec-WebSocket-Key"),
		c.GetHeader("Sec-WebSocket-Version"))

	// 从query参数获取token
	token := c.Query("token")
	if token == "" {
		// 尝试从header获取
		authHeader := c.GetHeader("Authorization")
		if strings.HasPrefix(authHeader, "Bearer ") {
			token = strings.TrimPrefix(authHeader, "Bearer ")
		}
	}

	if token == "" {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "missing token"})
		return
	}

	// 验证token
	claims, err := h.jwtService.ParseToken(token)
	if err != nil {
		log.Printf("Invalid token: %v", err)
		c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
		return
	}

	userID := claims.UserID
	if userID == "" {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid token claims"})
		return
	}

	// 升级HTTP连接为WebSocket连接
	conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
	if err != nil {
		log.Printf("Failed to upgrade connection: %v", err)
		log.Printf("[WebSocket] 请求详情 - User-Agent: %s, Content-Type: %s",
			c.GetHeader("User-Agent"),
			c.GetHeader("Content-Type"))
		return
	}

	// 如果用户已在线，先注销旧连接
	if h.wsManager.IsUserOnline(userID) {
		log.Printf("[DEBUG] 用户 %s 已有在线连接，复用该连接", userID)
	} else {
		log.Printf("[DEBUG] 用户 %s 当前不在线，创建新连接", userID)
	}

	// 创建客户端
	client := &ws.Client{
		ID:      userID,
		UserID:  userID,
		Conn:    conn,
		Send:    make(chan []byte, 256),
		Manager: h.wsManager,
	}

	// 注册客户端
	h.wsManager.Register(client)

	// 启动读写协程
	go client.WritePump()
	go h.handleMessages(client)

	log.Printf("[DEBUG] WebSocket连接建立: userID=%s, 当前在线=%v", userID, h.wsManager.IsUserOnline(userID))
}

// handleMessages 处理客户端消息
// 针对移动端优化：增加超时时间到 120 秒，配合客户端 55 秒心跳
func (h *WebSocketHandler) handleMessages(client *ws.Client) {
	defer func() {
		h.wsManager.Unregister(client)
		client.Conn.Close()
	}()

	client.Conn.SetReadLimit(512 * 1024)                           // 512KB
	client.Conn.SetReadDeadline(time.Now().Add(120 * time.Second)) // 增加到 120 秒
	client.Conn.SetPongHandler(func(string) error {
		client.Conn.SetReadDeadline(time.Now().Add(120 * time.Second)) // 增加到 120 秒
		return nil
	})

	// 心跳定时器 - 服务端主动 ping 间隔保持 30 秒
	pingTicker := time.NewTicker(30 * time.Second)
	defer pingTicker.Stop()

	for {
		select {
		case <-pingTicker.C:
			// 发送心跳
			if err := client.SendPing(); err != nil {
				log.Printf("Failed to send ping: %v", err)
				return
			}
		default:
			_, message, err := client.Conn.ReadMessage()
			if err != nil {
				if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
					log.Printf("WebSocket error: %v", err)
				}
				return
			}

			var wsMsg ws.WSMessage
			if err := json.Unmarshal(message, &wsMsg); err != nil {
				log.Printf("Failed to unmarshal message: %v", err)
				continue
			}

			h.processMessage(client, &wsMsg)
		}
	}
}

// processMessage 处理消息
func (h *WebSocketHandler) processMessage(client *ws.Client, msg *ws.WSMessage) {
	switch msg.Type {
	case ws.MessageTypePing:
		// 响应心跳
		if err := client.SendPong(); err != nil {
			log.Printf("Failed to send pong: %v", err)
		}

	case ws.MessageTypePong:
		// 客户端响应心跳

	case ws.MessageTypeMessage:
		// 处理聊天消息
		h.handleChatMessage(client, msg)

	case ws.MessageTypeTyping:
		// 处理正在输入状态
		h.handleTyping(client, msg)

	case ws.MessageTypeRead:
		// 处理已读回执
		h.handleReadReceipt(client, msg)

	// 群组消息处理
	case ws.MessageTypeGroupMessage:
		// 处理群消息
		h.handleGroupMessage(client, msg)

	case ws.MessageTypeGroupTyping:
		// 处理群输入状态
		h.handleGroupTyping(client, msg)

	case ws.MessageTypeGroupRead:
		// 处理群消息已读
		h.handleGroupReadReceipt(client, msg)

	case ws.MessageTypeGroupRecall:
		// 处理群消息撤回
		h.handleGroupRecall(client, msg)

	default:
		log.Printf("Unknown message type: %s", msg.Type)
	}
}

// handleChatMessage 处理聊天消息
func (h *WebSocketHandler) handleChatMessage(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		log.Printf("Invalid message data format")
		return
	}

	log.Printf("[DEBUG handleChatMessage] 完整data: %+v", data)

	conversationIDStr, _ := data["conversationId"].(string)

	if conversationIDStr == "" {
		log.Printf("Missing conversationId")
		return
	}

	// 解析会话ID
	conversationID, err := service.ParseConversationID(conversationIDStr)
	if err != nil {
		log.Printf("Invalid conversation ID: %v", err)
		return
	}

	// 解析 segments
	var segments model.MessageSegments
	if data["segments"] != nil {
		segmentsBytes, err := json.Marshal(data["segments"])
		if err == nil {
			json.Unmarshal(segmentsBytes, &segments)
		}
	}

	// 从 segments 中提取回复消息ID
	replyToID := dto.GetReplyMessageID(segments)
	var replyToIDPtr *string
	if replyToID != "" {
		replyToIDPtr = &replyToID
	}

	// 发送消息 - 使用 segments
	message, err := h.chatService.SendMessage(context.Background(), client.UserID, conversationID, segments, replyToIDPtr)
	if err != nil {
		log.Printf("Failed to send message: %v", err)
		// 发送错误消息
		errorMsg := ws.CreateWSMessage(ws.MessageTypeError, map[string]string{
			"error": "Failed to send message",
		})
		if client.Send != nil {
			msgBytes, _ := json.Marshal(errorMsg)
			client.Send <- msgBytes
		}
		return
	}

	// 发送确认消息（使用 meta 事件格式，包含完整的消息内容）
	metaAckMsg := ws.CreateWSMessage("meta", map[string]interface{}{
		"detail_type":     ws.MetaDetailTypeAck,
		"conversation_id": conversationID,
		"id":              message.ID,
		"user_id":         client.UserID,
		"sender_id":       client.UserID,
		"seq":             message.Seq,
		"segments":        message.Segments,
		"created_at":      message.CreatedAt.UnixMilli(),
	})
	if client.Send != nil {
		msgBytes, _ := json.Marshal(metaAckMsg)
		log.Printf("[DEBUG handleChatMessage] 私聊 ack 消息: %s", string(msgBytes))
		log.Printf("[DEBUG handleChatMessage] message.Segments 类型: %T, 值: %+v", message.Segments, message.Segments)
		client.Send <- msgBytes
	}
}

// handleTyping 处理正在输入状态
func (h *WebSocketHandler) handleTyping(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		return
	}

	conversationIDStr, _ := data["conversationId"].(string)
	if conversationIDStr == "" {
		return
	}

	conversationID, err := service.ParseConversationID(conversationIDStr)
	if err != nil {
		return
	}

	// 直接使用 string 类型的 userID
	h.chatService.SendTyping(context.Background(), client.UserID, conversationID)
}

// handleReadReceipt 处理已读回执
func (h *WebSocketHandler) handleReadReceipt(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		return
	}

	conversationIDStr, _ := data["conversationId"].(string)
	if conversationIDStr == "" {
		return
	}

	conversationID, err := service.ParseConversationID(conversationIDStr)
	if err != nil {
		return
	}

	// 获取lastReadSeq
	lastReadSeq, _ := data["lastReadSeq"].(float64)
	if lastReadSeq == 0 {
		return
	}

	// 直接使用 string 类型的 userID 和 conversationID
	if err := h.chatService.MarkAsRead(context.Background(), conversationID, client.UserID, int64(lastReadSeq)); err != nil {
		log.Printf("Failed to mark as read: %v", err)
	}
}

// ==================== 群组消息处理 ====================

// handleGroupMessage 处理群消息
func (h *WebSocketHandler) handleGroupMessage(client *ws.Client, msg *ws.WSMessage) {
	// 打印接收到的消息类型和数据，用于调试
	log.Printf("[handleGroupMessage] Received message type: %s", msg.Type)
	log.Printf("[handleGroupMessage] Message data: %+v", msg.Data)

	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		log.Printf("Invalid group message data format: data is not map[string]interface{}")
		return
	}

	// 解析群组ID（支持 camelCase 和 snake_case）
	var groupIDFloat float64
	groupID := "" // 使用 groupID 作为最终变量名
	if val, ok := data["groupId"].(float64); ok {
		groupIDFloat = val
		groupID = strconv.FormatFloat(groupIDFloat, 'f', 0, 64)
	} else if val, ok := data["group_id"].(string); ok {
		groupID = val
	}

	if groupID == "" {
		log.Printf("Missing groupId in group message")
		return
	}

	// 解析会话ID（支持 camelCase 和 snake_case）
	var conversationID string
	if val, ok := data["conversationId"].(string); ok {
		conversationID = val
	} else if val, ok := data["conversation_id"].(string); ok {
		conversationID = val
	}
	if conversationID == "" {
		log.Printf("Missing conversationId in group message")
		return
	}

	// 解析 segments
	var segments model.MessageSegments
	if data["segments"] != nil {
		segmentsBytes, err := json.Marshal(data["segments"])
		if err == nil {
			json.Unmarshal(segmentsBytes, &segments)
		}
	}

	// 解析@用户列表（支持 camelCase 和 snake_case）
	var mentionUsers []uint64
	var mentionUsersInterface []interface{}
	if val, ok := data["mentionUsers"].([]interface{}); ok {
		mentionUsersInterface = val
	} else if val, ok := data["mention_users"].([]interface{}); ok {
		mentionUsersInterface = val
	}
	if len(mentionUsersInterface) > 0 {
		for _, uid := range mentionUsersInterface {
			if uidFloat, ok := uid.(float64); ok {
				mentionUsers = append(mentionUsers, uint64(uidFloat))
			} else if uidStr, ok := uid.(string); ok {
				// 处理字符串格式的用户ID
				if uidInt, err := strconv.ParseUint(uidStr, 10, 64); err == nil {
					mentionUsers = append(mentionUsers, uidInt)
				}
			}
		}
	}

	// 解析@所有人（支持 camelCase 和 snake_case）
	var mentionAll bool
	if val, ok := data["mentionAll"].(bool); ok {
		mentionAll = val
	} else if val, ok := data["mention_all"].(bool); ok {
		mentionAll = val
	}

	// 检查用户是否可以发送群消息（验证成员身份和禁言状态）
	// client.UserID 已经是 string 格式的 UUID
	if err := h.groupService.CanSendGroupMessage(client.UserID, groupID); err != nil {
		log.Printf("User cannot send group message: %v", err)
		// 发送错误消息
		errorMsg := ws.CreateWSMessage(ws.MessageTypeError, map[string]string{
			"error":   "Cannot send group message",
			"reason":  err.Error(),
			"type":    "group_message_error",
			"groupId": groupID,
		})
		if client.Send != nil {
			msgBytes, _ := json.Marshal(errorMsg)
			client.Send <- msgBytes
		}
		return
	}

	// 检查@所有人权限（只有群主和管理员可以@所有人）
	if mentionAll {
		if !h.groupService.IsGroupAdmin(client.UserID, groupID) {
			log.Printf("User %s has no permission to mention all in group %s", client.UserID, groupID)
			mentionAll = false // 取消@所有人标记
		}
	}

	// 创建消息
	message := &model.Message{
		ConversationID: conversationID,
		SenderID:       client.UserID,
		Segments:       segments,
		Status:         model.MessageStatusNormal,
		MentionAll:     mentionAll,
	}

	// 序列化mentionUsers为JSON
	if len(mentionUsers) > 0 {
		mentionUsersJSON, _ := json.Marshal(mentionUsers)
		message.MentionUsers = string(mentionUsersJSON)
	}

	// 保存消息到数据库（只存库，不发私聊 WebSocket 帧，群消息通过 BroadcastGroupMessage 单独广播）
	savedMessage, err := h.chatService.SaveMessage(context.Background(), client.UserID, conversationID, segments, nil)
	if err != nil {
		log.Printf("Failed to save group message: %v", err)
		errorMsg := ws.CreateWSMessage(ws.MessageTypeError, map[string]string{
			"error": "Failed to save group message",
		})
		if client.Send != nil {
			msgBytes, _ := json.Marshal(errorMsg)
			client.Send <- msgBytes
		}
		return
	}

	// 更新消息的mention信息
	if len(mentionUsers) > 0 || mentionAll {
		message.ID = savedMessage.ID
		message.Seq = savedMessage.Seq
	}

	// 构造群消息响应
	groupMsg := &ws.GroupMessage{
		ID:             savedMessage.ID,
		ConversationID: conversationID,
		GroupID:        groupID,
		SenderID:       client.UserID,
		Seq:            savedMessage.Seq,
		Segments:       segments,
		MentionUsers:   mentionUsers,
		MentionAll:     mentionAll,
		CreatedAt:      savedMessage.CreatedAt.UnixMilli(),
	}

	// 广播消息给群组所有成员（排除发送者）
	h.BroadcastGroupMessage(groupID, groupMsg, client.UserID)

	// 发送确认消息给发送者（作为meta事件）
	// 使用 meta 事件格式发送 ack
	log.Printf("[DEBUG HandleGroupMessageSend] 准备发送 ack 消息, userID=%s, messageID=%s, seq=%d",
		client.UserID, savedMessage.ID, savedMessage.Seq)

	metaAckMsg := ws.CreateWSMessage("meta", map[string]interface{}{
		"detail_type":     ws.MetaDetailTypeAck,
		"conversation_id": conversationID,
		"group_id":        groupID,
		"id":              savedMessage.ID,
		"user_id":         client.UserID,
		"sender_id":       client.UserID,
		"seq":             savedMessage.Seq,
		"segments":        segments,
		"created_at":      savedMessage.CreatedAt.UnixMilli(),
	})
	if client.Send != nil {
		msgBytes, _ := json.Marshal(metaAckMsg)
		log.Printf("[DEBUG HandleGroupMessageSend] 发送 ack 消息到 channel, userID=%s, msg=%s",
			client.UserID, string(msgBytes))
		client.Send <- msgBytes
	} else {
		log.Printf("[ERROR HandleGroupMessageSend] client.Send 为 nil, userID=%s", client.UserID)
	}

	// 处理@提及通知
	if len(mentionUsers) > 0 || mentionAll {
		// 提取文本正文（不含 @ 部分）
		textContent := dto.ExtractTextContentFromModel(segments)
		// 在通知内容前拼接被@的真实昵称，通过群成员列表查找
		mentionContent := h.buildMentionContent(groupID, mentionUsers, mentionAll, textContent)
		h.handleGroupMention(groupID, savedMessage.ID, client.UserID, mentionContent, mentionUsers, mentionAll)
	}
}

// handleGroupTyping 处理群输入状态
func (h *WebSocketHandler) handleGroupTyping(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		return
	}

	groupIDFloat, _ := data["groupId"].(float64)
	if groupIDFloat == 0 {
		return
	}
	groupID := strconv.FormatFloat(groupIDFloat, 'f', 0, 64)

	isTyping, _ := data["isTyping"].(bool)

	// 验证用户是否是群成员
	// client.UserID 已经是 string 格式的 UUID
	isMember, err := h.groupRepo.IsMember(groupID, client.UserID)
	if err != nil || !isMember {
		return
	}

	// 获取用户信息
	user, err := h.userRepo.GetByID(client.UserID)
	if err != nil {
		return
	}

	// 构造输入状态消息
	typingMsg := &ws.GroupTypingMessage{
		GroupID:  groupID,
		UserID:   client.UserID,
		Username: user.Username,
		IsTyping: isTyping,
	}

	// 广播给群组其他成员
	wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupTyping, typingMsg)
	h.BroadcastGroupNoticeExclude(groupID, wsMsg, client.UserID)
}

// handleGroupReadReceipt 处理群消息已读回执
func (h *WebSocketHandler) handleGroupReadReceipt(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		return
	}

	conversationID, _ := data["conversationId"].(string)
	if conversationID == "" {
		return
	}

	lastReadSeq, _ := data["lastReadSeq"].(float64)
	if lastReadSeq == 0 {
		return
	}

	// 标记已读
	if err := h.chatService.MarkAsRead(context.Background(), conversationID, client.UserID, int64(lastReadSeq)); err != nil {
		log.Printf("Failed to mark group message as read: %v", err)
	}
}

// handleGroupRecall 处理群消息撤回
func (h *WebSocketHandler) handleGroupRecall(client *ws.Client, msg *ws.WSMessage) {
	data, ok := msg.Data.(map[string]interface{})
	if !ok {
		return
	}

	messageID, _ := data["messageId"].(string)
	if messageID == "" {
		return
	}

	groupIDFloat, _ := data["groupId"].(float64)
	if groupIDFloat == 0 {
		return
	}
	groupID := strconv.FormatFloat(groupIDFloat, 'f', 0, 64)

	// 撤回消息
	if err := h.chatService.RecallMessage(context.Background(), messageID, client.UserID); err != nil {
		log.Printf("Failed to recall group message: %v", err)
		errorMsg := ws.CreateWSMessage(ws.MessageTypeError, map[string]string{
			"error": "Failed to recall message",
		})
		if client.Send != nil {
			msgBytes, _ := json.Marshal(errorMsg)
			client.Send <- msgBytes
		}
		return
	}

	// 广播撤回通知给群组所有成员
	recallNotice := ws.CreateWSMessage(ws.MessageTypeGroupRecall, map[string]interface{}{
		"messageId": messageID,
		"groupId":   groupID,
		"userId":    client.UserID,
		"timestamp": time.Now().UnixMilli(),
	})
	h.BroadcastGroupNotice(groupID, recallNotice)
}

// handleGroupMention 处理群消息@提及通知
func (h *WebSocketHandler) handleGroupMention(groupID string, messageID, senderID, content string, mentionUsers []uint64, mentionAll bool) {
	// 如果@所有人，获取所有群成员
	if mentionAll {
		members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
		if err != nil {
			log.Printf("Failed to get group members for mention all: %v", err)
			return
		}

		for _, member := range members {
			// 不通知发送者自己
			memberIDStr := member.UserID
			if memberIDStr == senderID {
				continue
			}

			// 发送@提及通知
			mentionMsg := &ws.GroupMentionMessage{
				GroupID:    groupID,
				MessageID:  messageID,
				FromUserID: senderID,
				Content:    truncateContent(content, 50),
				MentionAll: true,
				CreatedAt:  time.Now().UnixMilli(),
			}
			wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupMention, mentionMsg)
			h.wsManager.SendToUser(memberIDStr, wsMsg)
		}
		return
	}

	// 处理特定用户的@提及
	for _, userID := range mentionUsers {
		// userID 是 uint64，转换为 string
		userIDStr := strconv.FormatUint(userID, 10)
		if userIDStr == senderID {
			continue // 不通知发送者自己
		}

		mentionMsg := &ws.GroupMentionMessage{
			GroupID:    groupID,
			MessageID:  messageID,
			FromUserID: senderID,
			Content:    truncateContent(content, 50),
			MentionAll: false,
			CreatedAt:  time.Now().UnixMilli(),
		}
		wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupMention, mentionMsg)
		h.wsManager.SendToUser(userIDStr, wsMsg)
	}
}

// buildMentionContent 构建@提及通知的内容，通过群成员列表查找被@用户的真实昵称
func (h *WebSocketHandler) buildMentionContent(groupID string, mentionUsers []uint64, mentionAll bool, textBody string) string {
	var prefix string
	if mentionAll {
		prefix = "@所有人 "
	} else if len(mentionUsers) > 0 {
		// 查询群成员列表，找到被@用户的昵称
		members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
		if err == nil {
			memberNickMap := make(map[string]string, len(members))
			for _, m := range members {
				displayName := m.Nickname
				if displayName == "" {
					displayName = m.UserID
				}
				memberNickMap[m.UserID] = displayName
			}
			for _, uid := range mentionUsers {
				uidStr := strconv.FormatUint(uid, 10)
				if name, ok := memberNickMap[uidStr]; ok {
					prefix += "@" + name + " "
				} else {
					prefix += "@某人 "
				}
			}
		} else {
			for range mentionUsers {
				prefix += "@某人 "
			}
		}
	}
	return prefix + textBody
}

// BroadcastGroupMessage 向群组所有成员广播消息
func (h *WebSocketHandler) BroadcastGroupMessage(groupID string, message *ws.GroupMessage, excludeUserID string) {
	// 获取群组所有成员
	members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
	if err != nil {
		log.Printf("Failed to get group members for broadcast: %v", err)
		return
	}

	// 创建WebSocket消息
	wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupMessage, message)

	// 遍历成员，如果在线则发送消息
	for _, member := range members {
		memberIDStr := member.UserID

		// 排除发送者
		if memberIDStr == excludeUserID {
			continue
		}

		// 发送消息
		h.wsManager.SendToUser(memberIDStr, wsMsg)
	}
}

// BroadcastGroupNotice 广播群组通知给所有成员
func (h *WebSocketHandler) BroadcastGroupNotice(groupID string, notice *ws.WSMessage) {
	// 获取群组所有成员
	members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
	if err != nil {
		log.Printf("Failed to get group members for notice broadcast: %v", err)
		return
	}

	// 遍历成员，如果在线则发送通知
	for _, member := range members {
		memberIDStr := member.UserID
		h.wsManager.SendToUser(memberIDStr, notice)
	}
}

// BroadcastGroupNoticeExclude 广播群组通知给所有成员（排除指定用户）
func (h *WebSocketHandler) BroadcastGroupNoticeExclude(groupID string, notice *ws.WSMessage, excludeUserID string) {
	// 获取群组所有成员
	members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
	if err != nil {
		log.Printf("Failed to get group members for notice broadcast: %v", err)
		return
	}

	// 遍历成员，如果在线则发送通知
	for _, member := range members {
		memberIDStr := member.UserID
		if memberIDStr == excludeUserID {
			continue
		}
		h.wsManager.SendToUser(memberIDStr, notice)
	}
}

// SendGroupMemberNotice 发送群成员变动通知
func (h *WebSocketHandler) SendGroupMemberNotice(noticeType string, groupID string, data *ws.GroupNoticeData) {
	notice := &ws.GroupNoticeMessage{
		NoticeType: noticeType,
		GroupID:    groupID,
		Data:       data,
		Timestamp:  time.Now().UnixMilli(),
	}
	wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupNotice, notice)
	h.BroadcastGroupNotice(groupID, wsMsg)
}

// truncateContent 截断内容
func truncateContent(content string, maxLen int) string {
	if len(content) <= maxLen {
		return content
	}
	return content[:maxLen] + "..."
}

// BroadcastGroupTyping 向群组所有成员广播输入状态
func (h *WebSocketHandler) BroadcastGroupTyping(groupID string, typingMsg *ws.GroupTypingMessage, excludeUserID string) {
	// 获取群组所有成员
	members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
	if err != nil {
		log.Printf("Failed to get group members for typing broadcast: %v", err)
		return
	}

	// 创建WebSocket消息
	wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupTyping, typingMsg)

	// 遍历成员，如果在线则发送消息
	for _, member := range members {
		memberIDStr := member.UserID

		// 排除指定用户
		if memberIDStr == excludeUserID {
			continue
		}

		// 发送消息
		h.wsManager.SendToUser(memberIDStr, wsMsg)
	}
}

// BroadcastGroupRead 向群组所有成员广播已读状态
func (h *WebSocketHandler) BroadcastGroupRead(groupID string, readMsg map[string]interface{}, excludeUserID string) {
	// 获取群组所有成员
	members, _, err := h.groupRepo.GetMembers(groupID, 1, 1000)
	if err != nil {
		log.Printf("Failed to get group members for read broadcast: %v", err)
		return
	}

	// 创建WebSocket消息
	wsMsg := ws.CreateWSMessage(ws.MessageTypeGroupRead, readMsg)

	// 遍历成员，如果在线则发送消息
	for _, member := range members {
		memberIDStr := member.UserID

		// 排除指定用户
		if memberIDStr == excludeUserID {
			continue
		}

		// 发送消息
		h.wsManager.SendToUser(memberIDStr, wsMsg)
	}
}