import { defineStore } from "pinia"
import { ref, computed, watch } from "vue"
import { chatDB } from "@/utils/db"
import { useWebRTC } from "@/composables/useWebRTC"
import { useUserStore } from "@/stores/user"
import { sendMessage } from "@/utils/request.js"

export const useChatStore = defineStore("chat", () => {
  const friends = ref([])
  const currentFriend = ref(null)
  const messages = ref([])
  const connectionStatus = ref("disconnected")
  const socket = ref(null)

  // 通话相关状态增强
  const currentCall = ref(null)
  const incomingCall = ref(null)
  const callStatus = ref("idle") // idle, calling, ringing, connecting, ongoing, ended, disconnected, hangup
  const callError = ref(null) // 错误状态：'rejected', 'no-answer', 'busy', 'failed'
  const callConnectionStatus = ref("") // 连接状态描述
  const callTimeout = ref(null) // 通话超时计时器

  const webrtc = useWebRTC()
  const userStore = useUserStore()

  // 计算属性
  const isConnected = computed(() => connectionStatus.value === "connected")
  const isInCall = computed(() =>
      ["calling", "ringing", "connecting", "ongoing"].includes(callStatus.value)
  )
  const isCalling = computed(() => callStatus.value === "calling")
  const isRinging = computed(() => callStatus.value === "ringing")
  const isConnecting = computed(() => callStatus.value === "connecting")
  const isOngoingCall = computed(() => callStatus.value === "ongoing")
  const isDisconnected = computed(() => callStatus.value === "disconnected")
  const isHangup = computed(() => callStatus.value === "hangup")

  // 监听通话状态变化
  watch(() => callStatus.value, (newStatus) => {
    console.log("通话状态变化:", newStatus)
    switch(newStatus) {
      case "disconnected":
        handleCallDisconnected()
        break
      case "hangup":
        handleCallHangup()
        break
    }
  })

  // 重置所有通话状态
  const resetCallState = () => {
    clearCallTimeout()
    callStatus.value = "idle"
    callError.value = null
    callConnectionStatus.value = ""
    currentCall.value = null
    incomingCall.value = null
  }

  // 清除通话超时
  const clearCallTimeout = () => {
    if (callTimeout.value) {
      clearTimeout(callTimeout.value)
      callTimeout.value = null
    }
  }

  // 设置通话超时
  const setCallTimeout = (callback, duration = 30000) => {
    clearCallTimeout()
    callTimeout.value = setTimeout(() => {
      callback()
      clearCallTimeout()
    }, duration)
  }

  // 发送通话信令
  const sendCallSignal = (signal) => {
    if (socket.value && socket.value.readyState === WebSocket.OPEN) {
      const message = {
        request_type: "call_signal",
        ...signal,
        sender_user_id: userStore.currentUser?.id
      }
      socket.value.send(JSON.stringify(message))
    } else {
      console.error("WebSocket未连接，无法发送通话信令")
    }
  }

  // 初始化数据库
  const initDB = async () => {
    try {
      await chatDB.init()
      console.log("数据库初始化成功")
    } catch (error) {
      console.error("数据库初始化失败:", error)
    }
  }

  // 加载好友列表
  const loadFriends = async (presetUsers, currentUserId) => {
    try {
      // 从数据库获取好友列表
      let friendList = await chatDB.getFriends(currentUserId)

      // 如果数据库中没有好友，使用预设用户初始化
      if (friendList.length === 0) {
        friendList = presetUsers.filter((user) => user.id !== currentUserId)

        // 保存到数据库
        for (const friend of friendList) {
          await chatDB.saveFriend(
              {
                ...friend,
                lastMessage: "",
                unreadCount: 0,
              },
              currentUserId
          )
        }
      }

      friends.value = friendList
    } catch (error) {
      console.error("加载好友列表失败:", error)
      // 降级到预设用户
      const friendList = presetUsers.filter((user) => user.id !== currentUserId)
      friendList.forEach((friend) => {
        friend.lastMessage = ""
        friend.unreadCount = 0
      })
      friends.value = friendList
    }
  }

  // 设置当前好友
  const setCurrentFriend = (friend) => {
    currentFriend.value = friend
    // 清除未读消息计数
    if (friend) {
      friend.unreadCount = 0
    }
  }

  // 切换当前聊天好友
  const switchFriend = async (friend, currentUserId) => {
    currentFriend.value = friend

    // 清空未读消息计数
    friend.unreadCount = 0
    await chatDB.clearUnreadCount(friend.id)

    // 加载聊天记录
    try {
      const chatHistory = await chatDB.getChatHistory(currentUserId, friend.id)
      messages.value = chatHistory.sort((a, b) => a.timestamp - b.timestamp)
    } catch (error) {
      console.error("加载聊天记录失败:", error)
      messages.value = []
    }
  }

  // 添加消息
  const addMessage = async (message, currentUserId) => {
    messages.value.push(message)

    // 更新好友列表中的最后消息
    const friend = friends.value.find((f) => (f.id === message.senderId || f.id === currentFriend.value?.id))
    if (friend) {
      let lastMessage = message.content
      if (message.type === "image") lastMessage = "[图片]"
      if (message.type === "video") lastMessage = "[视频]"
      if (message.type === "audio") lastMessage = "[语音]"
      if (message.type === "video-call" || message.type === "audio-call") lastMessage = "[通话]"

      friend.lastMessage = lastMessage.length > 20 ? lastMessage.substring(0, 20) + "..." : lastMessage

      // 更新数据库中的好友信息
      await chatDB.updateFriendLastMessage(friend.id, currentUserId, friend.lastMessage, 0)
    }

    if (currentFriend.value && friend && friend.id === currentFriend.value.id) {
      try {
        // 保存到数据库
        await chatDB.saveMessage(message, currentUserId, currentFriend.value.id)
      } catch (error) {
        console.error("保存消息失败:", error)
      }
    }
  }

  // 处理接收到的消息
  const handleIncomingMessage = async (messageData, currentUserId) => {
    // 添加来源检查 - 防止循环
    if (messageData.isFromHttp) {
      console.log("忽略来自HTTP的消息，避免循环")
      return
    }

    const senderId = messageData.sender_user_id
    const receiverId = messageData.receiver_user_id

    if (receiverId !== currentUserId) return

    // 如果是通话信令，直接处理
    if (messageData.call_id || messageData.call_status) {
      handleCallSignal(messageData)
      return
    }

    const newMessage = {
      type: getMessageType(messageData.message_type),
      content: messageData.content,
      time: new Date().toLocaleTimeString().slice(0, 5),
      senderId: senderId,
      read: false,
      duration: messageData.duration || 0,
      timestamp: Date.now(),
    }

    try {
      // 保存消息到数据库
      await chatDB.saveMessage(newMessage, currentUserId, senderId)

      // 如果消息来自当前聊天用户，直接显示
      if (currentFriend.value && senderId == currentFriend.value.id) {
        newMessage.read = true
        messages.value.push(newMessage)
      } else {
        // 更新未读消息计数
        const friend = friends.value.find((f) => f.id == senderId)
        if (friend) {
          friend.unreadCount = (friend.unreadCount || 0) + 1
        }
      }

      // 更新最后消息
      const friend = friends.value.find((f) => f.id == senderId)
      if (friend) {
        let lastMessage = newMessage.content
        if (newMessage.type === "image") lastMessage = "[图片]"
        if (newMessage.type === "video") lastMessage = "[视频]"
        if (newMessage.type === "audio") lastMessage = "[语音]"
        if (newMessage.type === "video-call" || newMessage.type === "audio-call") lastMessage = "[通话]"
        friend.lastMessage = lastMessage

        // 更新数据库
        await chatDB.updateFriendLastMessage(friend.id, currentUserId, lastMessage, friend.unreadCount)
      }
    } catch (error) {
      console.error("处理接收消息失败:", error)
    }
  }

  // 根据消息类型编号获取类型字符串
  const getMessageType = (type) => {
    const types = [
      "text", "image", "audio", "video",
      "prescription", "medical-record",
      "video-call", "audio-call", "file"
    ]
    return types[type] || "text"
  }

  // 处理通话信令
  const handleCallSignal = (data) => {
    console.log("处理通话信令:", data)
    console.log("通话状态:", data.call_status)

    // 根据通话状态处理
    switch (data.call_status) {
      case "invite":
        handleIncomingCall(data)
        break
      case "accepted":
        handleCallAccepted(data)
        break
      case "rejected":
        handleCallRejected(data)
        break
      case "ended":
        handleCallEnded(data)
        break
      case "candidate":
        handleIceCandidate(data)
        break
      case "no-answer":
        handleCallNoAnswer(data)
        break
      case "connecting":
        handleCallConnecting(data)
        break
      case "busy":
        handleCallBusy(data)
        break
      case "hangup": // 对方主动挂断
        handleCallHangup(data)
        break
      case "disconnected": // 对方掉线
        handleCallDisconnected(data)
        break
      case "terminated": // 对方终止呼叫
        handleCallTerminated(data)
        break
      case "failed":
        handleCallFailed(data)
        break
    }
  }

  // 处理连接中状态
  const handleCallConnecting = (data) => {
    callConnectionStatus.value = "正在连接..."
    if (currentCall.value?.callId === data.call_id) {
      callStatus.value = "connecting"
    }
  }

  // 处理通话失败
  const handleCallFailed = (data) => {
    if ((currentCall.value && currentCall.value.callId === data.call_id) ||
        (incomingCall.value && incomingCall.value.callId === data.call_id)) {
      callError.value = "failed"
      callConnectionStatus.value = "连接失败"

      // 添加通话记录
      const peerId = currentCall.value?.peerId || incomingCall.value?.callerId
      const friend = friends.value.find(f => f.id === peerId)
      if (friend) {
        const callMessage = {
          type: currentCall.value?.callType === "video" || incomingCall.value?.callType === "video" ?
              "video-call" : "audio-call",
          content: "[连接失败]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: peerId,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = "[连接失败]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[连接失败]", friend.unreadCount)
      }

      // 5秒后清除状态
      setTimeout(() => {
        resetCallState()
      }, 5000)
    }
  }

  // 处理来电
  const handleIncomingCall = (data) => {
    // 只有在当前没有通话时才处理来电
    if (isInCall.value) {
      // console.log 输出当前状态
      console.log("当前正在通话中，发送忙线状态")
      sendMessage({
        senderId: userStore.currentUser?.id,
        receiverId: data.sender_user_id,
        type: data.message_type === 6 ? "video-call" : "audio-call",
        callId: data.call_id,
        callStatus: "busy"
      })

      // 添加未接来电消息
      const friend = friends.value.find(f => f.id === data.sender_user_id)
      if (friend) {
        friend.lastMessage = "[未接来电]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[未接来电]", friend.unreadCount)

        // 添加通话记录
        const callMessage = {
          type: data.message_type === 6 ? "video-call" : "audio-call",
          content: "[未接来电]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: data.sender_user_id,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)
      }

      return
    }

    // 重置所有通话状态
    resetCallState();

    incomingCall.value = {
      callId: data.call_id,
      callerId: data.sender_user_id,
      callType: data.message_type === 6 ? "video" : "audio",
      content: data.content
    }
    callStatus.value = "ringing"
    callError.value = null
    callConnectionStatus.value = "收到来电"

    console.log("收到来电:", incomingCall.value)
  }

  // 处理通话接受
  const handleCallAccepted = (data) => {
    if (currentCall.value && currentCall.value.callId === data.call_id) {
      callStatus.value = "ongoing"
      callError.value = null
      callConnectionStatus.value = "通话中"
      console.log("通话已被接受")
    }
  }

  // 处理通话拒绝
  const handleCallRejected = (data) => {
    if (currentCall.value && currentCall.value.callId === data.call_id) {
      resetCallState();
      callConnectionStatus.value = "对方已拒绝"
      console.log("通话已被拒绝")

      // 添加通话记录
      const friend = friends.value.find(f => f.id === currentCall.value.peerId)
      if (friend) {
        const callMessage = {
          type: currentCall.value.callType === "video" ? "video-call" : "audio-call",
          content: "[对方已拒绝]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: userStore.currentUser?.id,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = "[对方已拒绝]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[对方已拒绝]", friend.unreadCount)
      }

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理通话结束
  const handleCallEnded = (data) => {
    if ((currentCall.value && currentCall.value.callId === data.call_id) ||
        (incomingCall.value && incomingCall.value.callId === data.call_id)) {
      // 添加通话记录
      const peerId = currentCall.value?.peerId || incomingCall.value?.callerId
      const friend = friends.value.find(f => f.id === peerId)
      if (friend) {
        const duration = callStatus.value === "ongoing" ?
            Math.floor((Date.now() - (currentCall.value?.startTime || incomingCall.value?.startTime)) / 1000) : 0

        const callMessage = {
          type: currentCall.value?.callType === "video" || incomingCall.value?.callType === "video" ?
              "video-call" : "audio-call",
          content: callStatus.value === "ongoing" ?
              `[${currentCall.value?.callType === "video" ? "视频" : "语音"}通话] ${Math.floor(duration/60)}分${duration%60}秒` :
              "[通话结束]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: peerId,
          read: true,
          timestamp: Date.now(),
          duration: duration
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = callMessage.content
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, callMessage.content, friend.unreadCount)
      }

      resetCallState();
      callConnectionStatus.value = "通话已结束"
      console.log("通话已结束")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理ICE候选
  const handleIceCandidate = (data) => {
    if ((currentCall.value && currentCall.value.callId === data.call_id) ||
        (incomingCall.value && incomingCall.value.callId === data.call_id)) {
      console.log("收到ICE候选:", data.candidate)

      // 添加到WebRTC连接
      webrtc.addIceCandidate(data.candidate)
    }
  }

  // 处理无人接听
  const handleCallNoAnswer = (data) => {
    if (currentCall.value && currentCall.value.callId === data.call_id) {
      // 添加未接来电记录
      const friend = friends.value.find(f => f.id === currentCall.value.peerId)
      if (friend) {
        const callMessage = {
          type: currentCall.value.callType === "video" ? "video-call" : "audio-call",
          content: "[未接来电]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: userStore.currentUser?.id,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = "[未接来电]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[未接来电]", friend.unreadCount)
      }

      resetCallState();
      callConnectionStatus.value = "对方无人接听"
      console.log("对方无人接听")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理对方忙线
  const handleCallBusy = (data) => {
    if (currentCall.value && currentCall.value.callId === data.call_id) {
      // 添加忙线记录
      const friend = friends.value.find(f => f.id === currentCall.value.peerId)
      if (friend) {
        const callMessage = {
          type: currentCall.value.callType === "video" ? "video-call" : "audio-call",
          content: "[对方忙线]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: userStore.currentUser?.id,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = "[对方忙线]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[对方忙线]", friend.unreadCount)
      }

      resetCallState();
      callConnectionStatus.value = "对方忙线中"
      console.log("对方忙线中")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理对方挂断
  const handleCallHangup = (data) => {
    const callId = data.call_id
    const peerId = data.sender_user_id

    if ((currentCall.value && currentCall.value.callId === callId) ||
        (incomingCall.value && incomingCall.value.callId === callId)) {

      // 添加通话记录
      const friend = friends.value.find(f => f.id === peerId)
      if (friend) {
        const duration = callStatus.value === "ongoing" ?
            Math.floor((Date.now() - (currentCall.value?.startTime || incomingCall.value?.startTime)) / 1000) : 0

        const callMessage = {
          type: currentCall.value?.callType || incomingCall.value?.callType === "video" ?
              "video-call" : "audio-call",
          content: `[对方已挂断] ${Math.floor(duration/60)}分${duration%60}秒`,
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: peerId,
          read: true,
          timestamp: Date.now(),
          duration: duration
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = `[对方已挂断] ${Math.floor(duration/60)}分${duration%60}秒`
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, friend.lastMessage, friend.unreadCount)
      }

      resetCallState()
      callConnectionStatus.value = "对方已挂断"
      console.log("对方已挂断通话")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理对方掉线
  const handleCallDisconnected = (data) => {
    const callId = data?.call_id || currentCall.value?.callId || incomingCall.value?.callId
    const peerId = data?.sender_user_id || currentCall.value?.peerId || incomingCall.value?.callerId

    if (callId && peerId) {
      // 添加通话记录
      const friend = friends.value.find(f => f.id === peerId)
      if (friend) {
        const duration = callStatus.value === "ongoing" ?
            Math.floor((Date.now() - (currentCall.value?.startTime || incomingCall.value?.startTime)) / 1000) : 0

        const callMessage = {
          type: currentCall.value?.callType || incomingCall.value?.callType === "video" ?
              "video-call" : "audio-call",
          content: `[网络中断] ${Math.floor(duration/60)}分${duration%60}秒`,
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: peerId,
          read: true,
          timestamp: Date.now(),
          duration: duration
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = `[网络中断] ${Math.floor(duration/60)}分${duration%60}秒`
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, friend.lastMessage, friend.unreadCount)
      }

      resetCallState()
      callConnectionStatus.value = "网络连接已断开"
      console.log("网络连接已断开")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 处理对方终止呼叫
  const handleCallTerminated = (data) => {
    const callId = data.call_id
    const peerId = data.sender_user_id

    if ((currentCall.value && currentCall.value.callId === callId) ||
        (incomingCall.value && incomingCall.value.callId === callId)) {

      // 添加通话记录
      const friend = friends.value.find(f => f.id === peerId)
      if (friend) {
        const callMessage = {
          type: currentCall.value?.callType || incomingCall.value?.callType === "video" ?
              "video-call" : "audio-call",
          content: "[对方已终止呼叫]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: peerId,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 更新最后消息
        friend.lastMessage = "[对方已终止呼叫]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[对方已终止呼叫]", friend.unreadCount)
      }

      resetCallState()
      callConnectionStatus.value = "对方已终止呼叫"
      console.log("对方已终止呼叫")

      // 5秒后清除状态
      setTimeout(() => {
        callConnectionStatus.value = ""
      }, 5000)
    }
  }

  // 发起通话
  const startCall = (peerId, type) => {
    if (isInCall.value) {
      alert('您正在通话中，请先结束当前通话。')
      return
    }

    const friend = friends.value.find(f => f.id === peerId)
    if (!friend) {
      alert('好友信息无效')
      return
    }

    resetCallState()

    const callId = Date.now().toString() + Math.random().toString(36).substr(2, 9)

    currentCall.value = {
      callId: callId,
      peerId: peerId,
      callType: type,
      startTime: Date.now(),
      status: 'calling'
    }

    callStatus.value = "calling"
    callConnectionStatus.value = "等待对方接听..."

    // 创建WebRTC连接
    webrtc.createPeerConnection(callId, peerId, () => {
      // WebRTC连接成功回调
      callStatus.value = "ongoing"
      callConnectionStatus.value = "通话中"
      clearCallTimeout()
    }, (error) => {
      // WebRTC连接失败回调
      console.error("WebRTC连接失败:", error)
      sendMessage({
        senderId: userStore.currentUser?.id,
        receiverId: peerId,
        type: type === "video" ? "video-call" : "audio-call",
        callId: callId,
        callStatus: "failed"
      })
      resetCallState()
      callConnectionStatus.value = "连接失败"
    })

    // 设置30秒超时（无人接听）
    setCallTimeout(() => {
      if (callStatus.value === "calling") {
        resetCallState()
        callConnectionStatus.value = "对方无人接听"
        console.log("呼叫超时，对方无人接听")

        // 发送无人接听信号
        sendMessage({
          senderId: userStore.currentUser?.id,
          receiverId: peerId,
          type: type === "video" ? "video-call" : "audio-call",
          callId: callId,
          callStatus: "no-answer"
        })

        // 更新好友最后消息为未接来电
        friend.lastMessage = "[未接来电]"
        chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[未接来电]", friend.unreadCount)

        // 添加通话记录
        const callMessage = {
          type: type === "video" ? "video-call" : "audio-call",
          content: "[未接来电]",
          time: new Date().toLocaleTimeString().slice(0, 5),
          senderId: userStore.currentUser?.id,
          read: true,
          timestamp: Date.now(),
          duration: 0
        }
        chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

        // 5秒后清除状态
        setTimeout(() => {
          callConnectionStatus.value = ""
        }, 5000)
      }
    }, 30000)

    // 发送通话请求
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: peerId,
      type: type === "video" ? "video-call" : "audio-call",
      callId: callId,
      callStatus: "invite"
    })

    console.log("发起通话:", currentCall.value)
  }

  // 接听来电
  const acceptCall = () => {
    if (!incomingCall.value) return

    // 发送连接中信号
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: incomingCall.value.callerId,
      type: incomingCall.value.callType === "video" ? "video-call" : "audio-call",
      callId: incomingCall.value.callId,
      callStatus: "connecting"
    })

    callStatus.value = "connecting"
    callConnectionStatus.value = "正在连接..."

    // 创建WebRTC连接
    webrtc.createPeerConnection(
        incomingCall.value.callId,
        incomingCall.value.callerId,
        () => {
          // WebRTC连接成功回调
          callStatus.value = "ongoing"
          callConnectionStatus.value = "通话中"

          // 发送接受信号
          sendMessage({
            senderId: userStore.currentUser?.id,
            receiverId: incomingCall.value.callerId,
            type: incomingCall.value.callType === "video" ? "video-call" : "audio-call",
            callId: incomingCall.value.callId,
            callStatus: "accepted"
          })

          currentCall.value = {
            callId: incomingCall.value.callId,
            peerId: incomingCall.value.callerId,
            callType: incomingCall.value.callType,
            startTime: Date.now(),
            status: 'ongoing'
          }

          incomingCall.value = null
          console.log("通话已连接")
        },
        (error) => {
          // WebRTC连接失败回调
          console.error("WebRTC连接失败:", error)
          sendMessage({
            senderId: userStore.currentUser?.id,
            receiverId: incomingCall.value.callerId,
            type: incomingCall.value.callType === "video" ? "video-call" : "audio-call",
            callId: incomingCall.value.callId,
            callStatus: "failed"
          })
          resetCallState()
          callConnectionStatus.value = "连接失败"
        }
    )

    console.log("正在连接通话...")
  }

  // 拒绝来电
  const rejectCall = (reason = "rejected") => {
    if (!incomingCall.value) return

    // 发送拒绝信号
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: incomingCall.value.callerId,
      type: incomingCall.value.callType === "video" ? "video-call" : "audio-call",
      callId: incomingCall.value.callId,
      callStatus: reason // 可以是'rejected'或'busy'
    })

    // 添加通话记录
    const friend = friends.value.find(f => f.id === incomingCall.value.callerId)
    if (friend) {
      const content = reason === "busy" ? "[对方忙线]" : "[已拒绝]"

      const callMessage = {
        type: incomingCall.value.callType === "video" ? "video-call" : "audio-call",
        content: content,
        time: new Date().toLocaleTimeString().slice(0, 5),
        senderId: userStore.currentUser?.id,
        read: true,
        timestamp: Date.now(),
        duration: 0
      }
      chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

      // 更新最后消息
      friend.lastMessage = content
      chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, content, friend.unreadCount)
    }

    resetCallState()
    callConnectionStatus.value = reason === "busy" ? "对方忙线" : "已拒绝"

    // 5秒后清除状态
    setTimeout(() => {
      callConnectionStatus.value = ""
    }, 5000)

    console.log("拒绝通话")
  }

  // 结束通话
  const endCall = (reason = "ended") => {
    const callId = currentCall.value?.callId || incomingCall.value?.callId
    const peerId = currentCall.value?.peerId || incomingCall.value?.callerId
    const callTypeVal = currentCall.value?.callType || incomingCall.value?.callType

    if (!callId || !peerId) return

    // 发送结束信号
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: peerId,
      type: callTypeVal === "video" ? "video-call" : "audio-call",
      callId: callId,
      callStatus: reason // 可以是'ended'或'no-answer'
    })

    // 添加通话记录
    const friend = friends.value.find(f => f.id === peerId)
    if (friend) {
      const duration = callStatus.value === "ongoing" ?
          Math.floor((Date.now() - (currentCall.value?.startTime || incomingCall.value?.startTime)) / 1000) : 0

      let content = ""
      if (reason === "no-answer") {
        content = "[未接来电]"
      } else if (duration > 0) {
        content = `[${callTypeVal === "视频" ? "视频" : "语音"}通话] ${Math.floor(duration/60)}分${duration%60}秒`
      } else {
        content = "[通话结束]"
      }

      const callMessage = {
        type: callTypeVal === "video" ? "video-call" : "audio-call",
        content: content,
        time: new Date().toLocaleTimeString().slice(0, 5),
        senderId: userStore.currentUser?.id,
        read: true,
        timestamp: Date.now(),
        duration: duration
      }
      chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

      // 更新最后消息
      friend.lastMessage = content
      chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, content, friend.unreadCount)
    }

    resetCallState()
    callConnectionStatus.value = reason === "no-answer" ? "对方无人接听" : "通话结束"

    // 5秒后清除状态
    setTimeout(() => {
      callConnectionStatus.value = ""
    }, 5000)

    console.log("结束通话")
  }

  // 主动挂断通话（用户点击挂断按钮）
  const hangupCall = () => {
    const callId = currentCall.value?.callId || incomingCall.value?.callId
    const peerId = currentCall.value?.peerId || incomingCall.value?.callerId
    const callTypeVal = currentCall.value?.callType || incomingCall.value?.callType

    if (!callId || !peerId) return

    // 发送挂断信号
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: peerId,
      type: callTypeVal === "video" ? "video-call" : "audio-call",
      callId: callId,
      callStatus: "hangup"
    })

    // 添加通话记录
    const friend = friends.value.find(f => f.id === peerId)
    if (friend) {
      const duration = callStatus.value === "ongoing" ?
          Math.floor((Date.now() - (currentCall.value?.startTime || incomingCall.value?.startTime)) / 1000) : 0

      const callMessage = {
        type: callTypeVal === "video" ? "video-call" : "audio-call",
        content: `[已挂断] ${Math.floor(duration/60)}分${duration%60}秒`,
        time: new Date().toLocaleTimeString().slice(0, 5),
        senderId: userStore.currentUser?.id,
        read: true,
        timestamp: Date.now(),
        duration: duration
      }
      chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

      // 更新最后消息
      friend.lastMessage = `[已挂断] ${Math.floor(duration/60)}分${duration%60}秒`
      chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, friend.lastMessage, friend.unreadCount)
    }

    resetCallState()
    callConnectionStatus.value = "已挂断"

    // 5秒后清除状态
    setTimeout(() => {
      callConnectionStatus.value = ""
    }, 5000)

    console.log("主动挂断通话")
  }

  // 终止呼叫（在对方接听前取消）
  const terminateCall = () => {
    if (!currentCall.value) return

    // 发送终止信号
    sendMessage({
      senderId: userStore.currentUser?.id,
      receiverId: currentCall.value.peerId,
      type: currentCall.value.callType === "video" ? "video-call" : "audio-call",
      callId: currentCall.value.callId,
      callStatus: "terminated"
    })

    // 添加通话记录
    const friend = friends.value.find(f => f.id === currentCall.value.peerId)
    if (friend) {
      const callMessage = {
        type: currentCall.value.callType === "video" ? "video-call" : "audio-call",
        content: "[已取消]",
        time: new Date().toLocaleTimeString().slice(0, 5),
        senderId: userStore.currentUser?.id,
        read: true,
        timestamp: Date.now(),
        duration: 0
      }
      chatDB.saveMessage(callMessage, userStore.currentUser.id, friend.id)

      // 更新最后消息
      friend.lastMessage = "[已取消]"
      chatDB.updateFriendLastMessage(friend.id, userStore.currentUser.id, "[已取消]", friend.unreadCount)
    }

    resetCallState()
    callConnectionStatus.value = "已取消呼叫"

    // 5秒后清除状态
    setTimeout(() => {
      callConnectionStatus.value = ""
    }, 5000)

    console.log("终止呼叫")
  }

  return {
    friends,
    currentFriend,
    messages,
    connectionStatus,
    socket,
    currentCall,
    incomingCall,
    callStatus,
    callError,
    callConnectionStatus,
    isConnected,
    isInCall,
    isCalling,
    isRinging,
    isConnecting,
    isOngoingCall,
    isDisconnected,
    isHangup,
    initDB,
    loadFriends,
    setCurrentFriend,
    switchFriend,
    addMessage,
    handleIncomingMessage,
    handleCallSignal,
    startCall,
    acceptCall,
    rejectCall,
    endCall,
    hangupCall,
    terminateCall,
    resetCallState,
    sendCallSignal,
    clearCallTimeout
  }
})