(function (window) {
  'use strict';

  /**
   * ColorMapRun JSBridge SDK (Compatible Version)
   * 用于 H5 页面与 Flutter App 进行交互
   * 兼容性说明:
   * - 优先检测 uni.webView 标准通道
   * - 降级适配旧版 App 的 action:// 协议拦截和 window.share_wx 注入对象
   */

  var Bridge = {
    version: '1.0.2',
    
    /**
     * 内部核心发送方法
     */
    _post: function (action, data) {
      data = data || {};
      console.log('[Bridge] Call:', action, data);

      // 1. 优先尝试标准 uni 通道 (新版 App)
      if (window.uni && window.uni.postMessage) {
        window.uni.postMessage({
          data: {
            action: action,
            data: data
          }
        });
        return;
      }

      // 2. 降级适配 (旧版 App)
      this._fallback(action, data);
    },

    /**
     * 旧版 App 适配逻辑
     */
    _fallback: function (action, data) {
      var url = '';

      switch (action) {
        case 'back':
          // 尝试关闭页面或返回
          window.history.back();
          break;
          
        case 'toHome':
          // 协议: action://to_home/
          url = 'action://to_home/';
          break;

        case 'toLogin':
          // 协议: action://to_login/
          url = 'action://to_login/';
          break;

        case 'openMap':
          // 协议: action://to_map_app?title=xxx&latitude=xxx&longitude=xxx
          url = 'action://to_map_app?title=' + encodeURIComponent(data.name || '') +
                '&latitude=' + data.latitude +
                '&longitude=' + data.longitude;
          break;

        case 'openMatch':
          // 协议: action://to_detail/?id=xxx&matchType=xxx
          url = 'action://to_detail/?id=' + data.id +
                '&matchType=' + (data.type || 1);
          break;
          
        case 'openActivityList':
           // 协议: action://to_activity_list/?id=xxx&mapName=xxx
           url = 'action://to_activity_list/?id=' + data.id +
                 '&mapName=' + encodeURIComponent(data.mapName || '');
           break;

        case 'shareWx':
          // 旧版使用注入对象 share_wx
          if (window.share_wx && window.share_wx.postMessage) {
             window.share_wx.postMessage(JSON.stringify(data));
          } else {
             console.error('[Bridge] share_wx injection not found');
             alert('微信分享功能不可用(环境不支持)');
          }
          return; // shareWx 不需要走 URL 拦截

        case 'launchWxMini':
           // 旧版使用注入对象 wx_launch_mini
           if (window.wx_launch_mini && window.wx_launch_mini.postMessage) {
               window.wx_launch_mini.postMessage(JSON.stringify(data));
           } else {
               console.error('[Bridge] wx_launch_mini injection not found');
           }
           return;

        case 'saveImage':
           // 旧版使用注入对象 save_base64
           if (window.save_base64 && window.save_base64.postMessage) {
               window.save_base64.postMessage(data.base64);
           } else {
               console.error('[Bridge] save_base64 injection not found');
           }
           return;

        default:
          console.warn('[Bridge] No legacy fallback for action:', action);
      }

      if (url) {
        console.log('[Bridge] Legacy URL jump:', url);
        // 触发 URL 拦截
        window.location.href = url;
      }
    },

    // ==============================
    // 公开 API
    // ==============================

    back: function () {
      this._post('back');
    },
    
    toHome: function() {
        this._post('toHome');
    },
    
    toLogin: function() {
        this._post('toLogin');
    },

    setTitle: function (title) {
      this._post('setTitle', { title: title });
    },

    openMap: function (latitude, longitude, name) {
      this._post('openMap', {
        latitude: latitude,
        longitude: longitude,
        name: name
      });
    },

    openMatch: function (id, type) {
      this._post('openMatch', {
        id: id,
        type: type
      });
    },
    
    openActivityList: function(id, mapName) {
        this._post('openActivityList', {
            id: id,
            mapName: mapName
        });
    },

    shareWx: function (options) {
      this._post('shareWx', options);
    },

    launchWxMini: function (username, path) {
      this._post('launchWxMini', { username: username, path: path });
    },
    
    saveImage: function (base64Str) {
       this._post('saveImage', { base64: base64Str });
    },
    
    getToken: function () {
        this._post('getToken');
    },
    
    _tokenCallback: null,
    onToken: function(callback) {
        this._tokenCallback = callback;
    },
    receiveToken: function(token) {
        console.log('[Bridge] Received token:', token);
        if (this._tokenCallback) {
            this._tokenCallback(token);
        }
    }
  };

  window.Bridge = Bridge;

})(window);