/*
 *Licensed to the Apache Software Foundation (ASF) under one
 *or more contributor license agreements.  See the NOTICE file
 *distributed with this work for additional information
 *regarding copyright ownership.  The ASF licenses this file
 *to you under the Apache License, Version 2.0 (the
 *"License"); you may not use this file except in compliance
 *with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0

 *Unless required by applicable law or agreed to in writing,
 *software distributed under the License is distributed on an
 *"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *KIND, either express or implied.  See the License for the
 *specific language governing permissions and limitations
 *under the License.
 */
(function() {
  var name = 'Client',
    global = this,
    overwrittenName = global[name],
    exports;
  var AUTH_ERRORS = [
    "auth_expired_session_token",
    "auth_missing_credentials",
    "auth_unverified_oath",
    "expired_token",
    "unauthorized",
    "auth_invalid"
  ];
  Usergrid.Client = function(options) {
    //usergrid endpoint
    this.URI = options.URI || 'https://api.usergrid.com';

    //Find your Orgname and Appname in the Admin portal (http://apigee.com/usergrid)
    if (options.orgName) {
      this.set('orgName', options.orgName);
    }
    if (options.appName) {
      this.set('appName', options.appName);
    }
    if (options.qs) {
      this.setObject('default_qs', options.qs);
    }
    //other options
    this.buildCurl = options.buildCurl || false;
    this.logging = options.logging || false;

    //timeout and callbacks
    // this.logoutCallback =  options.logoutCallback || null;
  };

  /*
   *  Main function for making requests to the API.  Can be called directly.
   *
   *  options object:
   *  `method` - http method (GET, POST, PUT, or DELETE), defaults to GET
   *  `qs` - object containing querystring values to be appended to the uri
   *  `body` - object containing entity body for POST and PUT requests
   *  `endpoint` - API endpoint, for example 'users/fred'
   *  `mQuery` - boolean, set to true if running management query, defaults to false
   *
   *  @method request
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.request = function(options, callback) {
    var method = options.method || 'GET';
    var endpoint = options.endpoint;
    var body = options.body || {};
    var qs = options.qs || {};
    var mQuery = options.mQuery || false; //is this a query to the management endpoint?
    var orgName = this.get('orgName');
    var appName = this.get('appName');
    var default_qs = this.getObject('default_qs');
    var uri;
    /*var logoutCallback=function(){
        if (typeof(this.logoutCallback) === 'function') {
            return this.logoutCallback(true, 'no_org_or_app_name_specified');
        }
    }.bind(this);*/
    if (!mQuery && !orgName && !appName) {
      return logoutCallback();
    }
    if (mQuery) {
      uri = this.URI + '/' + endpoint;
    } else {
      uri = this.URI + '/' + orgName + '/' + appName + '/' + endpoint;
    }
    if (this.getToken()) {
      qs.access_token = this.getToken();
      /*
       **NOTE** The token can also be passed as a header on the request

       xhr.setRequestHeader("Authorization", "Bearer " + self.getToken());
       xhr.withCredentials = true;
       */
    }
    if (default_qs) {
      qs = propCopy(qs, default_qs);
    }
    var self=this;
    var req = new Usergrid.Request(method, uri, qs, body, function(err, response) {
      /*if (AUTH_ERRORS.indexOf(response.error) !== -1) {
            return logoutCallback();
        }*/
      if(err){
        doCallback(callback, [err, response, self], self);
      }else{
        doCallback(callback, [null, response, self], self);
      }
      //p.done(err, response);
    });
  };

  /*
   *  function for building asset urls
   *
   *  @method buildAssetURL
   *  @public
   *  @params {string} uuid
   *  @return {string} assetURL
   */
  Usergrid.Client.prototype.buildAssetURL = function(uuid) {
    var self = this;
    var qs = {};
    var assetURL = this.URI + '/' + this.orgName + '/' + this.appName + '/assets/' + uuid + '/data';

    if (self.getToken()) {
      qs.access_token = self.getToken();
    }

    //append params to the path
    var encoded_params = encodeParams(qs);
    if (encoded_params) {
      assetURL += "?" + encoded_params;
    }

    return assetURL;
  };

  /*
   *  Main function for creating new groups. Call this directly.
   *
   *  @method createGroup
   *  @public
   *  @params {string} path
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.createGroup = function(options, callback) {
    var group = new Usergrid.Group({
      path: options.path,
      client: this,
      data: options
    });
    group.save(function(err, response) {
      doCallback(callback, [err, response, group], group);
    });
  };

  /*
   *  Main function for creating new entities - should be called directly.
   *
   *  options object: options {data:{'type':'collection_type', 'key':'value'}, uuid:uuid}}
   *
   *  @method createEntity
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.createEntity = function(options, callback) {
    var entity = new Usergrid.Entity({
      client: this,
      data: options
    });
    entity.save(function(err, response) {
      doCallback(callback, [err, response, entity], entity);
    });
  };
  /*
   *  Main function for getting existing entities - should be called directly.
   *
   *  You must supply a uuid or (username or name). Username only applies to users.
   *  Name applies to all custom entities
   *
   *  options object: options {data:{'type':'collection_type', 'name':'value', 'username':'value'}, uuid:uuid}}
   *
   *  @method createEntity
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.getEntity = function(options, callback) {
    var entity = new Usergrid.Entity({
      client: this,
      data: options
    });
    entity.fetch(function(err, response) {
      doCallback(callback, [err, response, entity], entity);
    });
  };

  /*
   *  Main function for restoring an entity from serialized data.
   *
   *  serializedObject should have come from entityObject.serialize();
   *
   *  @method restoreEntity
   *  @public
   *  @param {string} serializedObject
   *  @return {object} Entity Object
   */
  Usergrid.Client.prototype.restoreEntity = function(serializedObject) {
    var data = JSON.parse(serializedObject);
    var options = {
      client: this,
      data: data
    };
    var entity = new Usergrid.Entity(options);
    return entity;
  };
  /*
   *  Main function for creating new counters - should be called directly.
   *
   *  options object: options {timestamp:0, category:'value', counters:{name : value}}
   *
   *  @method createCounter
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, response, counter)
   */
  Usergrid.Client.prototype.createCounter = function(options, callback) {
    var counter = new Usergrid.Counter({
      client: this,
      data: options
    });
    counter.save(callback);
  };
  /*
   *  Main function for creating new assets - should be called directly.
   *
   *  options object: options {name:"photo.jpg", path:"/user/uploads", "content-type":"image/jpeg", owner:"F01DE600-0000-0000-0000-000000000000", file: FileOrBlobObject }
   *
   *  @method createCounter
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, response, counter)
   */
  Usergrid.Client.prototype.createAsset = function(options, callback) {
    var file=options.file;
    if(file){
      options.name=options.name||file.name;
      options['content-type']=options['content-type']||file.type;
      options.path=options.path||'/';
      delete options.file;
    }
    var asset = new Usergrid.Asset({
      client: this,
      data: options
    });
    asset.save(function(err, response, asset){
      if(file && !err){
        asset.upload(file, callback);
      }else{
        doCallback(callback, [err, response, asset], asset);
      }
    });
  };

  /*
   *  Main function for creating new collections - should be called directly.
   *
   *  options object: options {client:client, type: type, qs:qs}
   *
   *  @method createCollection
   *  @public
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.createCollection = function (options, callback) {
    options.client = this;
    return new Usergrid.Collection(options, function(err, data, collection) {
        console.log("createCollection", arguments);
        doCallback(callback, [err, collection, data]);
    });
  };

  /*
   *  Main function for restoring a collection from serialized data.
   *
   *  serializedObject should have come from collectionObject.serialize();
   *
   *  @method restoreCollection
   *  @public
   *  @param {string} serializedObject
   *  @return {object} Collection Object
   */
  Usergrid.Client.prototype.restoreCollection = function(serializedObject) {
    var data = JSON.parse(serializedObject);
    data.client = this;
    var collection = new Usergrid.Collection(data);
    return collection;
  };

  /*
   *  Main function for retrieving a user's activity feed.
   *
   *  @method getFeedForUser
   *  @public
   *  @params {string} username
   *  @param {function} callback
   *  @return {callback} callback(err, data, activities)
   */
  Usergrid.Client.prototype.getFeedForUser = function(username, callback) {
    var options = {
      method: "GET",
      endpoint: "users/" + username + "/feed"
    };

    this.request(options, function(err, data) {
      if (err) {
        doCallback(callback, [err]);
      } else {
        doCallback(callback, [err, data, data.getEntities()]);
      }
    });
  };

  /*
   *  Function for creating new activities for the current user - should be called directly.
   *
   *  //user can be any of the following: "me", a uuid, a username
   *  Note: the "me" alias will reference the currently logged in user (e.g. 'users/me/activties')
   *
   *  //build a json object that looks like this:
   *  var options =
   *  {
   *    "actor" : {
   *      "displayName" :"myusername",
   *      "uuid" : "myuserid",
   *      "username" : "myusername",
   *      "email" : "myemail",
   *      "picture": "http://path/to/picture",
   *      "image" : {
   *          "duration" : 0,
   *          "height" : 80,
   *          "url" : "http://www.gravatar.com/avatar/",
   *          "width" : 80
   *      },
   *    },
   *    "verb" : "post",
   *    "content" : "My cool message",
   *    "lat" : 48.856614,
   *    "lon" : 2.352222
   *  }
   *
   *  @method createEntity
   *  @public
   *  @params {string} user // "me", a uuid, or a username
   *  @params {object} options
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.createUserActivity = function(user, options, callback) {
    options.type = 'users/' + user + '/activities';
    options = {
      client: this,
      data: options
    };
    var entity = new Usergrid.Entity(options);
    entity.save(function(err, data) {
      doCallback(callback, [err, data, entity]);
    });
  };

  /*
   *  Function for creating user activities with an associated user entity.
   *
   *  user object:
   *  The user object passed into this function is an instance of Usergrid.Entity.
   *
   *  @method createUserActivityWithEntity
   *  @public
   *  @params {object} user
   *  @params {string} content
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.createUserActivityWithEntity = function(user, content, callback) {
    var username = user.get("username");
    var options = {
      actor: {
        "displayName": username,
        "uuid": user.get("uuid"),
        "username": username,
        "email": user.get("email"),
        "picture": user.get("picture"),
        "image": {
          "duration": 0,
          "height": 80,
          "url": user.get("picture"),
          "width": 80
        }
      },
      "verb": "post",
      "content": content
    };

    this.createUserActivity(username, options, callback);

  };

  /*
   *  A private method to get call timing of last call
   */
  Usergrid.Client.prototype.calcTimeDiff = function() {
    var seconds = 0;
    var time = this._end - this._start;
    try {
      seconds = ((time / 10) / 60).toFixed(2);
    } catch (e) {
      return 0;
    }
    return seconds;
  };

  /*
   *  A public method to store the OAuth token for later use - uses localstorage if available
   *
   *  @method setToken
   *  @public
   *  @params {string} token
   *  @return none
   */
  Usergrid.Client.prototype.setToken = function(token) {
    this.set('token', token);
  };

  /*
   *  A public method to get the OAuth token
   *
   *  @method getToken
   *  @public
   *  @return {string} token
   */
  Usergrid.Client.prototype.getToken = function() {
    return this.get('token');
  };

  Usergrid.Client.prototype.setObject = function(key, value) {
    if (value) {
      value = JSON.stringify(value);
    }
    this.set(key, value);
  };

  Usergrid.Client.prototype.set = function(key, value) {
    var keyStore = 'apigee_' + key;
    this[key] = value;
    if (typeof(Storage) !== "undefined") {
      if (value) {
        localStorage.setItem(keyStore, value);
      } else {
        localStorage.removeItem(keyStore);
      }
    }
  };

  Usergrid.Client.prototype.getObject = function(key) {
    return JSON.parse(this.get(key));
  };

  Usergrid.Client.prototype.get = function(key) {
    var keyStore = 'apigee_' + key;
    var value = null;
    if (this[key]) {
      value = this[key];
    } else if (typeof(Storage) !== "undefined") {
      value = localStorage.getItem(keyStore);
    }
    return value;
  };

  /*
   * A public facing helper method for signing up users
   *
   * @method signup
   * @public
   * @params {string} username
   * @params {string} password
   * @params {string} email
   * @params {string} name
   * @param {function} callback
   * @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.signup = function(username, password, email, name, callback) {
    var self = this;
    var options = {
      type: "users",
      username: username,
      password: password,
      email: email,
      name: name
    };

    this.createEntity(options, callback);
  };

  /*
   *
   *  A public method to log in an app user - stores the token for later use
   *
   *  @method login
   *  @public
   *  @params {string} username
   *  @params {string} password
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.login = function(username, password, callback) {
    var self = this;
    var options = {
      method: 'POST',
      endpoint: 'token',
      body: {
        username: username,
        password: password,
        grant_type: 'password'
      }
    };
    self.request(options, function(err, response) {
      var user = {};
      if (err) {
        if (self.logging) console.log('error trying to log user in');
      } else {
        var options = {
          client: self,
          data: response.user
        };
        user = new Usergrid.Entity(options);
        self.setToken(response.access_token);
      }
      doCallback(callback, [err, response, user]);
    });
  };
  
  Usergrid.Client.prototype.adminlogin = function(username, password, callback) {
    var self = this;
    var options = {
        method: "POST",
        endpoint:'management/token',
        body: {
            username: username,
            password: password,
            grant_type: "password"
        },
        mQuery:true
    };
    self.request(options, function(err, response) {
        var user = {};
        if (err) {
            if (self.logging) console.log("error trying to log adminuser in");
        } else {
            var options = {
                client: self,
                data: response.user
            };
            user = new Usergrid.Entity(options);
            self.setToken(response.access_token);
        }
        doCallback(callback, [ err, response, user ]);
    });
  };

  Usergrid.Client.prototype.reAuthenticateLite = function(callback) {
    var self = this;
    var options = {
      method: 'GET',
      endpoint: 'management/me',
      mQuery: true
    };
    this.request(options, function(err, response) {
      if (err && self.logging) {
        console.log('error trying to re-authenticate user');
      } else {

        //save the re-authed token and current email/username
        self.setToken(response.data.access_token);

      }
      doCallback(callback, [err]);

    });
  };


  Usergrid.Client.prototype.reAuthenticate = function(email, callback) {
    var self = this;
    var options = {
      method: 'GET',
      endpoint: 'management/users/' + email,
      mQuery: true
    };
    this.request(options, function(err, response) {
      var organizations = {};
      var applications = {};
      var user = {};
      var data;
      if (err && self.logging) {
        console.log('error trying to full authenticate user');
      } else {
        data = response.data;
        self.setToken(data.token);
        self.set('email', data.email);

        //delete next block and corresponding function when iframes are refactored
        localStorage.setItem('accessToken', data.token);
        localStorage.setItem('userUUID', data.uuid);
        localStorage.setItem('userEmail', data.email);
        //end delete block


        var userData = {
          "username": data.username,
          "email": data.email,
          "name": data.name,
          "uuid": data.uuid
        };
        var options = {
          client: self,
          data: userData
        };
        user = new Usergrid.Entity(options);

        organizations = data.organizations;
        var org = '';
        try {
          //if we have an org stored, then use that one. Otherwise, use the first one.
          var existingOrg = self.get('orgName');
          org = (organizations[existingOrg]) ? organizations[existingOrg] : organizations[Object.keys(organizations)[0]];
          self.set('orgName', org.name);
        } catch (e) {
          err = true;
          if (self.logging) {
            console.log('error selecting org');
          }
        } //should always be an org

        applications = self.parseApplicationsArray(org);
        self.selectFirstApp(applications);

        self.setObject('organizations', organizations);
        self.setObject('applications', applications);

      }
      doCallback(callback, [err, data, user, organizations, applications], self);
    });
  };

  /*
   *  A public method to log in an app user with facebook - stores the token for later use
   *
   *  @method loginFacebook
   *  @public
   *  @params {string} username
   *  @params {string} password
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.loginFacebook = function(facebookToken, callback) {
    var self = this;
    var options = {
      method: 'GET',
      endpoint: 'auth/facebook',
      qs: {
        fb_access_token: facebookToken
      }
    };
    this.request(options, function(err, data) {
      var user = {};
      if (err && self.logging) {
        console.log('error trying to log user in');
      } else {
        var options = {
          client: self,
          data: data.user
        };
        user = new Usergrid.Entity(options);
        self.setToken(data.access_token);
      }
      doCallback(callback, [err, data, user], self);
    });
  };

  /*
   *  A public method to get the currently logged in user entity
   *
   *  @method getLoggedInUser
   *  @public
   *  @param {function} callback
   *  @return {callback} callback(err, data)
   */
  Usergrid.Client.prototype.getLoggedInUser = function(callback) {
    var self = this;
    if (!this.getToken()) {
        doCallback(callback, [new UsergridError("Access Token not set"), null, self], self);
    } else {
      var options = {
        method: 'GET',
        endpoint: 'users/me'
      };
      this.request(options, function(err, response) {
        if (err) {
          if (self.logging) {
            console.log('error trying to log user in');
          }
          console.error(err, response);
          doCallback(callback, [err, response, self], self);
        } else {
          var options = {
            client: self,
            data: response.getEntity()
          };
          var user = new Usergrid.Entity(options);
          doCallback(callback, [null, response, user], self);
        }
      });
    }
  };

  /*
   *  A public method to test if a user is logged in - does not guarantee that the token is still valid,
   *  but rather that one exists
   *
   *  @method isLoggedIn
   *  @public
   *  @return {boolean} Returns true the user is logged in (has token and uuid), false if not
   */
  Usergrid.Client.prototype.isLoggedIn = function() {
    var token = this.getToken();
    return "undefined" !== typeof token && token !== null;
  };

  /*
   *  A public method to log out an app user - clears all user fields from client
   *
   *  @method logout
   *  @public
   *  @return none
   */
  Usergrid.Client.prototype.logout = function() {
    this.setToken();
  };

  /*
   *  A public method to destroy access tokens on the server
   *
   *  @method logout
   *  @public
   *  @param {string} username	the user associated with the token to revoke
   *  @param {string} token set to 'null' to revoke the token of the currently logged in user
   *    or set to token value to revoke a specific token
   *  @param {string} revokeAll set to 'true' to revoke all tokens for the user
   *  @return none
   */
  Usergrid.Client.prototype.destroyToken = function(username, token, revokeAll, callback) {
    var options = {
      client: self,
      method: 'PUT',
    };

    if (revokeAll === true) {
      options.endpoint = 'users/' + username + '/revoketokens';
    } else if (token === null) {
      options.endpoint = 'users/' + username + '/revoketoken?token=' + this.getToken();
    } else {
      options.endpoint = 'users/' + username + '/revoketoken?token=' + token;
    }
    this.request(options, function(err, data) {
      if (err) {
        if (self.logging) {
          console.log('error destroying access token');
        }
        doCallback(callback, [err, data, null], self);
      } else {
        if (revokeAll === true) {
          console.log('all user tokens invalidated');
        } else {
          console.log('token invalidated');
        }
        doCallback(callback, [err, data, null], self);
      }
    });
  };

  /*
   *  A public method to log out an app user - clears all user fields from client
   *  and destroys the access token on the server.
   *
   *  @method logout
   *  @public
   *  @param {string} username the user associated with the token to revoke
   *  @param {string} token set to 'null' to revoke the token of the currently logged in user
   *   or set to token value to revoke a specific token
   *  @param {string} revokeAll set to 'true' to revoke all tokens for the user
   *  @return none
   */
  Usergrid.Client.prototype.logoutAndDestroyToken = function(username, token, revokeAll, callback) {
    if (username === null) {
      console.log('username required to revoke tokens');
    } else {
      this.destroyToken(username, token, revokeAll, callback);
      if (revokeAll === true || token === this.getToken() || token === null) {
        this.setToken(null);
      }
    }
  };

  /*
   *  A private method to build the curl call to display on the command line
   *
   *  @method buildCurlCall
   *  @private
   *  @param {object} options
   *  @return {string} curl
   */
  Usergrid.Client.prototype.buildCurlCall = function(options) {
    var curl = ['curl'];
    var method = (options.method || 'GET').toUpperCase();
    var body = options.body;
    var uri = options.uri;

    //curl - add the method to the command (no need to add anything for GET)
    curl.push('-X');
    curl.push((['POST', 'PUT', 'DELETE'].indexOf(method) >= 0) ? method : 'GET');

    //curl - append the path
    curl.push(uri);

    if ("object" === typeof body && Object.keys(body).length > 0 && ['POST', 'PUT'].indexOf(method) !== -1) {
      curl.push('-d');
      curl.push("'" + JSON.stringify(body) + "'");
    }
    curl = curl.join(' ');
    //log the curl command to the console
    console.log(curl);

    return curl;
  };

  Usergrid.Client.prototype.getDisplayImage = function(email, picture, size) {
    size = size || 50;
    var image = 'https://apigee.com/usergrid/images/user_profile.png';
    try {
      if (picture) {
        image = picture;
      } else if (email.length) {
        image = 'https://secure.gravatar.com/avatar/' + MD5(email) + '?s=' + size + encodeURI("&d=https://apigee.com/usergrid/images/user_profile.png");
      }
    } catch (e) {
      //TODO do something with this error?
    } finally {
      return image;
    }
  };
  global[name] = Usergrid.Client;
  global[name].noConflict = function() {
    if (overwrittenName) {
      global[name] = overwrittenName;
    }
    return exports;
  };
  return global[name];
}());