Help bot

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Help bot
In Bots.Business chat we have many generic questions. This bot can answer for thems.
Bot have only one command. This command is Master command - *.
Code description
Bot receive all messages from chat with Master command.
So we do not need any notifications about new chat members and etc:
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if(!message){ return }
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Do you have big case for command execution? You can use return.  
Bot have keywords for searching in user's messages. Bot show answer and url on keywoard in message:
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list = [
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   { url: "status.bots.business", keywords: [ 'status' ],
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       answer: 'Seems do you need to know uptime status?' },
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   { keywords: [ '/start' ], answer: 'Please do not touch it here' },
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   { keywords: [ 'php ', ' php' ], answer: 'PHP? Really? I love BJS only' },
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   { keywords: [ 'hi!', 'hello' ], answer: 'Hey!' }
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]
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Also admin can write anything and do not need any help. So we have key - answerToAdmin:
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let admin_tg_id = 519829299;
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...
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{ url: "status.bots.business", keywords: [ 'status' ], answerToAdmin: true }
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Sometimes we need exact searhing:
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{ url: "help.bots.business", keywords: [ 'help' ], exact:true}
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Message can be in aNyCAse. We need it only in lowercase:
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let stext = message.toLowerCase();
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We use functions in the code. So code more simple:
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// search keyword in the message (stext)
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function haveAnyKeyword(item){
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  for(var ind in item.keywords){
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    // exact searhing
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    if(item.exact){
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      // exact searching
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      if(stext==item.keywords[ind]){ return true }
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      continue;
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    }
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​
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    if(stext.indexOf(item.keywords[ind])>-1){ return true }
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  }
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}
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​
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// build answer
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function getAnswerFor(item){
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  if((user.telegramid==admin_tg_id)&&(!item.answerToAdmin)){
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     // no any answer for admin
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     return;
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  }
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  let answer = item.answer;
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  if(!answer){ answer = "" }
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​
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  if(item.url){
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    answer = answer + "\nhttp://" + item.url
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  }
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  return answer;
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}
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​
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// just bust all keywords list 
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function doSearch(){
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  let item;
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  let answer;
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​
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  for(var ind in list){
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    item = list[ind];
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    if(haveAnyKeyword(item.keywords)){
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      return getAnswerFor(item);
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    }
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  }
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}
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Functions create your code more simple. It is good for it rewriting and improvement.
Perform searching. And if we get answer - send message:
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​
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let answer = doSearch();
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if(answer){
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  Bot.sendMessage(answer, {is_reply: true});
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}
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​
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In this command - we have only one Bot.sendMessage function!
It is good - code more simple.
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