/**
 * WebSocket状态管理模块
 * 
 * @author kxmall
 * @date 2025-01-08
 */

import riderWebSocketManager from '@/utils/websocket.js';

const state = {
  // 连接状态
  connectionStatus: 'disconnected', // disconnected, connecting, connected, error
  // 在线状态
  isOnline: false,
  // 最后连接时间
  lastConnectedTime: null,
  // 最后断开时间
  lastDisconnectedTime: null,
  // 重连次数
  reconnectAttempts: 0,
  // 接收到的消息数量
  receivedMessageCount: 0,
  // 最后接收消息时间
  lastMessageTime: null,
  // WebSocket配置
  config: {
    enabled: true,
    autoReconnect: true,
    enableNotifications: true
  }
};

const mutations = {
  // 设置连接状态
  SET_CONNECTION_STATUS(state, status) {
    state.connectionStatus = status;
    state.isOnline = status === 'connected';
    
    if (status === 'connected') {
      state.lastConnectedTime = new Date();
      state.reconnectAttempts = 0;
    } else if (status === 'disconnected') {
      state.lastDisconnectedTime = new Date();
    }
  },

  // 增加重连次数
  INCREMENT_RECONNECT_ATTEMPTS(state) {
    state.reconnectAttempts++;
  },

  // 重置重连次数
  RESET_RECONNECT_ATTEMPTS(state) {
    state.reconnectAttempts = 0;
  },

  // 增加接收消息数量
  INCREMENT_MESSAGE_COUNT(state) {
    state.receivedMessageCount++;
    state.lastMessageTime = new Date();
  },

  // 更新WebSocket配置
  UPDATE_CONFIG(state, config) {
    state.config = { ...state.config, ...config };
  },

  // 重置状态
  RESET_STATE(state) {
    state.connectionStatus = 'disconnected';
    state.isOnline = false;
    state.reconnectAttempts = 0;
    state.receivedMessageCount = 0;
    state.lastConnectedTime = null;
    state.lastDisconnectedTime = null;
    state.lastMessageTime = null;
  }
};

const actions = {
  // 连接WebSocket
  connect({ commit, rootState }) {
    if (!rootState.userInfo || !rootState.userInfo.state) {
      console.log('用户未通过审核，无法连接WebSocket');
      return false;
    }

    commit('SET_CONNECTION_STATUS', 'connecting');
    
    try {
      riderWebSocketManager.connect(rootState.userInfo, rootState.baseUrl);
      return true;
    } catch (error) {
      console.error('连接WebSocket失败:', error);
      commit('SET_CONNECTION_STATUS', 'error');
      return false;
    }
  },

  // 断开WebSocket
  disconnect({ commit }) {
    riderWebSocketManager.disconnect();
    commit('SET_CONNECTION_STATUS', 'disconnected');
  },

  // 重连WebSocket
  reconnect({ dispatch, commit }) {
    commit('INCREMENT_RECONNECT_ATTEMPTS');
    return dispatch('connect');
  },

  // 发送消息
  sendMessage({ state }, message) {
    if (state.connectionStatus !== 'connected') {
      console.warn('WebSocket未连接，无法发送消息');
      return false;
    }

    return riderWebSocketManager.send(message);
  },

  // 更新配置
  updateConfig({ commit }, config) {
    commit('UPDATE_CONFIG', config);
  },

  // 处理连接状态变化
  handleStatusChange({ commit }, status) {
    commit('SET_CONNECTION_STATUS', status);
  },

  // 处理接收到消息
  handleMessage({ commit }, message) {
    commit('INCREMENT_MESSAGE_COUNT');
  },

  // 重置所有状态
  reset({ commit }) {
    commit('RESET_STATE');
  }
};

const getters = {
  // 是否已连接
  isConnected: state => state.connectionStatus === 'connected',
  
  // 是否正在连接
  isConnecting: state => state.connectionStatus === 'connecting',
  
  // 是否有错误
  hasError: state => state.connectionStatus === 'error',
  
  // 连接状态文本
  statusText: state => {
    switch (state.connectionStatus) {
      case 'connected': return '已连接';
      case 'connecting': return '连接中';
      case 'disconnected': return '已断开';
      case 'error': return '连接错误';
      default: return '未知状态';
    }
  },

  // 连接时长（毫秒）
  connectionDuration: state => {
    if (state.connectionStatus === 'connected' && state.lastConnectedTime) {
      return Date.now() - state.lastConnectedTime.getTime();
    }
    return 0;
  },

  // 是否需要重连
  shouldReconnect: state => {
    return state.config.autoReconnect && 
           state.connectionStatus === 'disconnected' && 
           state.reconnectAttempts < 5;
  }
};

export default {
  namespaced: true,
  state,
  mutations,
  actions,
  getters
};