hrdk108 / hsbot

'use strict';

var ChatDB = require('../db/chatdb');

var analysis = new(require('../analysis'))();

var userDB = new (require('../db/userdb'))();

var common = require('../util/common');

/**

 * A collection of `HSBOT` functions for talk with bot and analyze data.

 * Supply template and your bot is ready.

 * @name HSBOT

 * @constructor

 * @param {Array} topicList - A collection of JSON object.

 * @param {Array} topics - A collection of JSON object.

 * @example

 * 

 * var topicList = require('../db/data/topicList.json'); // Your file path as per defined template.

 * var topics = require('../db/data/topics.json'); // Your file path as per defined template.

 * const HSBot = require('hsbot');

 * const hsBot = new HSBot(topicList, topics);

 */

function HSBot(topicList, topics) {

  this.topicList = topicList;

  this.topics = topics;

}

/**

 * This method is responsible to reply.

 * @name transformAndReply

 * @method

 * @param {String} userId - User's ID.

 * @param {String} userName - User name.

 * @param {String} pattern - A human text or user query.

 * @return {callback} error-first callback, bot result based on user query.

 * @example

 * var topicList = require('../db/data/topicList.json'); // Your file path as per defined template.

 * var topics = require('../db/data/topics.json'); // Your file path as per defined template.

 * const HSBot = require('hsbot');

 * const hsBot = new HSBot(topicList, topics);

 * var userId = "aQ11zyTr4u7I";

 * var userName;

 *

 * hsBot.transformAndReply(userId, userName, human_text, function(err, data){

 *   console.log("HSBot:", data);

 * });

 */

HSBot.prototype.transformAndReply = function(userId, userName, pattern, cb) {

  var topicList = this.topicList;

  var topics = this.topics;

  var chatDB = new ChatDB(topicList, topics);

  pattern = common.string2literal(pattern);

  if(!userId){

    cb("UserId is not defined.");

  } else {

    var user = userDB._findUser(userId);

    var response;

    if(!user){

      response = welcomeUser();

      cb(null, response);

    } else {

      response = transform();

      cb(null, response);

    }

  }

  function welcomeUser() {

    var template = createUser();

    var postStringDict = {

      template: template,

      userName: userName

    };

    return _postTransform(postStringDict);

  }

  function createUser(){

    var topicName = chatDB._findDefaultTopic();

    var topicFlow  = chatDB.getTopicFlow(topicName);

    var templateObj  = chatDB.getTemplateObj(userName, topicFlow);

    userDB._insertUser(userId, userName, templateObj.pattern, templateObj.template, topicName);

    return templateObj.template;

  }

  function transform() {

    var lastIndex = user.activities.length -1;

    var preQ = user.activities[lastIndex].preQ;

    var topicName = pattern? (chatDB._findTopicByCommand(pattern) || user.activities[lastIndex].topic) : chatDB._findDefaultTopic();

    var topicFlow = chatDB.getTopicFlow(topicName);

    var templateObj = chatDB.getTemplateObj(user.userName, topicFlow, pattern, preQ);

    if(templateObj){

      userDB._updateUser(userId, user.userName || pattern, templateObj.pattern, templateObj.template, topicName);

    } else{

      templateObj = { template: chatDB.getDefaultMessage() };

    }

    var postStringDict = {

      template: templateObj.template,

      query: pattern,

      userName: user.userName || pattern

    };

    return _postTransform(postStringDict);

  }

  function _postTransform(resObj) {

    var s = resObj.template;

    s = s.replace(/[*]/g, resObj.query).replace("<userName>", resObj.userName);

    return s;

  }

};

/**

 * This method will generate user analysis based on him activities.

 * @name getUserAnalysis

 * @method

 * @param {String} userId - User's ID.

 * @returns {JSON} Analysis of aggregate of user activities

 * @example

 * var topicList = require('../db/data/topicList.json'); // Your file path as per defined template.

 * var topics = require('../db/data/topics.json'); // Your file path as per defined template.

 * const HSBot = require('hsbot');

 * const hsBot = new HSBot(topicList, topics);

 * var userId = "aQ11zyTr4u7I";

 *

 * hsBot.getUserAnalysis(userId);

 * 

 * @example

 * {

 *  "timeSpent": "100261",

 *  "frequentBotText": "Thank you for contacting us. you can call me by typing @hs anytime for further help.",

 *  "frequentUserText": "@hs"

 * }

 */

HSBot.prototype.getUserAnalysis = function(userId) {

  var user = userDB._findUser(userId);

  var analysisData = analysis._analyzed(user);

  return analysisData;

};

/**

 * This method is responsible to get user details based on userId.

 * @name getChatHistory

 * @method

 * @param {String} userId - User's ID.

 * @example

 * var topicList = require('../db/data/topicList.json'); // Your file path as per defined template.

 * var topics = require('../db/data/topics.json'); // Your file path as per defined template.

 * const HSBot = require('hsbot');

 * const hsBot = new HSBot(topicList, topics);

 * var userId = "aQ11zyTr4u7I";

 *

 * hsBot.getChatHistory(userId);

 * 

 * @returns {JSON} user object.

 * @example

 * {

 *   userName: "Hardik Shah",

 *   userId: "aQ11zyTr4u7I",

 *   loggedIn: 1235637,

 *   activities: [

 *    {

 *      pattern: null,

 *      preQ: "What is your name?",

 *      ut: 12345688,

 *      topic: "call1"

 *    },

 *    {

 *     pattern: "Hardik Shah",

 *     preQ: "Welcome Hardik Shah, How can I assist you?",

 *     ut: 12345999,

 *     topic: "call1"

 *   }

 *  ]

 * }

 */

HSBot.prototype.getChatHistory = function(userId) {

  var user = userDB._findUser(userId);

  return user;

};

/**

 * This method is responsible to get all user details.

 * @name getAllUserChatHistory

 * @method

 * @example

 * var topicList = require('../db/data/topicList.json'); // Your file path as per defined template.

 * var topics = require('../db/data/topics.json'); // Your file path as per defined template.

 * const HSBot = require('hsbot');

 * const hsBot = new HSBot(topicList, topics);

 * var userId = "aQ11zyTr4u7I";

 *

 * hsBot.getChatHistory(userId);

 * 

 * @returns {Array} Array of all user details.

 * 

 * @example

 * [

 *   {

 *     userName: "Hardik Shah",

 *     userId: "aQ11zyTr4u7I",

 *     loggedIn: 1235637,

 *     activities: [

 *      {

 *        pattern: null,

 *        preQ: "What is your name?",

 *        ut: 12345688,

 *        topic: "call1"

 *      },

 *      {

 *        pattern: "Hardik Shah",

 *        preQ: "Welcome Hardik Shah, How can I assist you?",

 *        ut: 12345999,

 *        topic: "call1"

 *      }

 *     ]

 *   },

 *   {

 *     userName: "Kartik Shah",

 *     userId: "aQ11zyTr4u22",

 *     loggedIn: 1235637,

 *     activities: [

 *      {

 *        pattern: null,

 *        preQ: "What is your name?",

 *        ut: 12345688,

 *        topic: "call1"

 *      },

 *      {

 *        pattern: "Kartik Shah",

 *        preQ: "Welcome Kartik Shah, How can I assist you?",

 *        ut: 12345999,

 *        topic: "call1"

 *      }

 *     ]

 *   }

 * ]

 */

HSBot.prototype.getAllUserChatHistory = function() {

  var userList = userDB.mem;

  return userList;

};

module.exports = HSBot;

module.exports.version = require('../package.json').version;