"use strict";

// Modules
var request = require("request");
var readline = require("readline");
var os = require("os");
var fs = require("fs-extra");
var Crawler = require("crawler");
var url = require("url");
var Promise = require("bluebird");

// Constant
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});
const redditUrl = "https://www.reddit.com/user/";

// Variables

var usernameUrl = "";
var keywords = [];

var searchedArray = [];

console.log("Reddit profile scraper... case insensitive and search is based off space delimeter (typos will not appear in filter)");

// Crawler
var c = new Crawler({
  maxConnections: 10,
  callback: function(error, result, $) {
    new Promise(function(resolve, reject) {

      $("a.title").each(function(index, a) {
        for (var i = 0; i < keywords.length; i++) {
          if ($(a).text().toLowerCase().search(new RegExp("(^| )" + keywords[i] +"(?![^\\W])")) !== -1) {
            searchedArray.push({
              "url": $(a).attr("href"),
              "matchType": "Title",
              "matchContent": $(a).text()
            });
          }
        }
      });

      $(".usertext-body").each(function(index, a) {
        for (var i = 0; i < keywords.length; i++) {
          if ($(a).text().toLowerCase().search(new RegExp("(^| )" + keywords[i] +"(?![^\\W])")) !== -1) {
        searchedArray.push({
          "url": $(a).parent().parent().parent().find(".title").attr("href"),
          "matchType": "Comment",
          "matchContent": $(a).text()
        });
      }
    }
      });

      for (var i = 0; i < searchedArray.length; i++) {
        console.log("URL: " + searchedArray[i].url);
        console.log("MatchType: " + searchedArray[i].matchType);
        console.log("Content: " + searchedArray[i].matchContent);
      }

      searchedArray = [];
      resolve($(".next-button a").attr("href"));
    }).then(function(url){
        c.queue(url);
      });
  }
});

function askQuestion() {
  searchedArray = [];
  rl.question("Search username: ", function(usernameInput) {
    if (usernameInput) {
      usernameUrl = redditUrl + usernameInput;
      rl.question("Search keywords separated by comma: ", function(keywordsInput) {
        if (keywords) {
          keywords = keywordsInput.split(",");
          console.log("Starting to search " + usernameInput + "...");
          c.queue(usernameUrl);
        } else process.exit(1);
      });
    } else process.exit(1);
  });
}

askQuestion();