// ==UserScript==
// @name         Goodreads_Giveaway_Autonomous
// @namespace    https://greasyfork.org/en/scripts/431707-goodreads-giveaway-autonomous
// @version      1.0
// @description  This script will Auto-click "Enter Giveaway". Then open the entry in a
// pop-up window auto-click the entry and close when complete.  It also changes background 
// color to gray by default.  To adjust to the changes in the website there is a 1 minute
// delay before the page is reloaded to view the next set of entries.
// @author       Davinna
// @icon         https://media.tenor.com/images/e5b48218f76d06c730cae7f2928ad2c7/tenor.gif
// @include      *www.goodreads.com/giveaway*
// @require      https://code.jquery.com/jquery-3.6.0.min.js
// @license      https://opensource.org/licenses/MIT
// @copyright    2021 Davinna
//===================================================================
// TODO namespace URL

// @downloadURL none
// ==/UserScript==
$(document).ready(function () {
  //document variables
  let delayTime_ms = 2000; //delayloop 2 seconds
  var url;
  let delayTime_2_ms = 60000; //reload once a minute

  //change background color
  document.body.style.backgroundColor = "gray";
  $("div.mainContent ").css("background-color", "gray");
  $("div.mainContentFloat ").css("background-color", "gray");


  //===========Auto-click "Enter Giveaway"===========
  //create the list of "Enter Giveaway" buttons
  let $giveawayButtons = $('a.Button.Button--primary.Button--small');

  //wait for page to load
  window.addEventListener('load', function (event) {
    console.log('giveawayButtons.length: ' + $giveawayButtons.length);

    //delay loop to open Enter Giveaway window
    (function delayLoop(i) {
      setTimeout(function () {
        openWin($giveawayButtons[i - 1].href);
        //  decrement i and call delayLoop again if i > 0
        if (--i) delayLoop(i);
      }, delayTime_ms); //end of setTimeout
      //
      if (i - 1 == 0) {
        setTimeout(function () {
          confirm("Click 'OK' to reload Page").closed(location.reload());
        }, delayTime_2_ms); //end of setTimeout_2
      }//end of if
    })($giveawayButtons.length); //end of delayLoop  
  });

  //Enter giveaway actions
  giveawaySelectors('a.addressLink');
  //add a short delay in milliseconds between clicks of terms checkbox
  setInterval(function () { giveawaySelectors('#termsCheckBox'); }, 1200);
  //add a short delay in milliseconds between clicks of check box and submit button
  setInterval(function () { giveawaySelectors('#giveawaySubmitButton'); }, 1000);

  //close enty windows once completed
  url = window.location.href;
  if (url != 'https://www.goodreads.com/giveaway?sort=ending_soon&format=print' && (($(".mediumTextBottomPadded:contains('You are entered to win.')").length > 0 || $('a.gr-button').length))) {
    window.close();
  };

});//end of .ready

//search all non-zero selectors
function giveawaySelectors(selector) {
  var x = $(selector);
  if (x.length > 0) {
    x[0].click();
  }
}

//open new window
function openWin(href) {
  window.open(href, "_blank", "left=1300,top=100,width=500,height=600");
}