var Nightmare = require('nightmare');
var nightmare = Nightmare({ show: true })

var options = {
  marginsType: 1,
  printBackground: false,
  printSelectionOnly: false,
  landscape: false,
  pageSize: "A4"
}

var start_link = process.argv[2];
var start_page = parseInt(process.argv[3]);
var wait_time = parseInt(process.argv[4]);

if(start_link){
  if(!start_page){
    start_page = 1
  }
  if(!wait_time){
    wait_time = 2000
  }
  nightmare
    .viewport(1200, 800)
    .goto('https://www.safaribooksonline.com/accounts/login/')
    .type('form[action*="/accounts/login/"] [name=email]', 'james.peret@gmail.com')
    .type('form[action*="/accounts/login/"] [name=password1]', 'woodstock512')
    .click('form[action*="/accounts/login/"] [type=submit]')
    .wait(1000)
    .then(function (result) {
      var getPage = function(i, link){
        console.log("Capturing page " + i + ":")
        nightmare.viewport(1200, 800)
        .goto(link)
        .wait(1000)
        .evaluate(function (i) {
          var link = $(".next.nav-link").attr('href');
          var title = $('h1.title').text();
          var $content = $('#sbo-rt-content').clone();
          $('body').html($content);
          $('head').append('<style type="text/css" media="print"><!-- @page { size: auto; margin: 25mm;} @media print { body {margin: 25mm;} } body { margin: 0px; padding: 0px;} #sbo-rt-content { max-width: 90%;} --></style>');
          return [i, title, link]
        }, i)
        .then(function (result) {
          var i = result[0]
          var title = result[1]
          var link = result[2]
          var options2 = {
            marginsType: 1,
            printBackground: false,
            printSelectionOnly: false,
            landscape: false,
            pageSize: "A4"
          }
          console.log("> title: " + title);
          console.log("> next: " + link);
          nightmare.wait(wait_time)
          .pdf("book/" + i + "- " + title + ".pdf", options2)
          if(link != null){
            getPage(i + 1, "https://www.safaribooksonline.com" + link)
          } else {
            nightmare.end();
          }

        });
      }
      getPage(start_page, start_link);
      //console.log("Found " + result.length + " links")
    })
} else {
  console.log("Please provide a link for the scraping starting point.")
}