(function($) {

  // Set objects
  var $generator = $('.generator');
      $complicate = $('.complicate', $generator),
      $generate = $('.generate', $generator),
      $passwordFinnal = $('#passwordFinnal', $generator),
      $passwordPlain = $('#passwordPlain', $generator),
      $copy = $('.input--wrap-icon', $generator),
      $indicator = $('.generator-indicator span', $generator);

  // Show copy
  var showCopy = function(val) {

    // Show
    if(val) {
      $copy.show();
    }

    // Hide
    else {
      $copy.hide();
    }

  }

  // Change indicator
  var changeIndicator = function(password) {

    // Set strength
    var strength = 0;

    // Length 5 characters or more
    if(password.length >= 7) {
      strength++;
    }

    // Contains lowercase characters
    if(password.match(/[a-z]+/)) {
      strength++;
    }

    // Contains digits
    if(password.match(/[0-9]+/)) {
      strength++;
    }

    // Contains uppercase characters
    if(password.match(/[A-Z]+/)) {
      strength++;
    }

    // Contains special characters
    if(password.match(/[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]+/)) {
      strength++;
    }

    // Set indicator width
    $indicator.css('width', (strength * 20) + '%');

  }

  // Show generator
  $generator.show();

  // Hide complicate button and copy
  $('.complicate', $generator).add($copy).hide();

  // Generate and complicate
  $generate.add($complicate).on('click', function() {

    // Save self
    var $self = $(this);

    // Create ajax request
    $.get('http://leximo.criticalworks.cz/projects/inste.cz/generator-hesel/?password=' + $passwordPlain.val() + '&complicate=' + $self.hasClass('complicate'), function(data, status, response){

      // Error happened
      if(status == 'error') {

        // Throw errior into console
        console.log(response);

      // All is fine
      } else {

        // Check data
        if(data) {

          // Append password
          $passwordFinnal.val(data);

          // Change indicator
          changeIndicator(data);

          // Show copy
          showCopy(data.length > 0);

          // Keep plain passqword
          if(!$self.hasClass('complicate')) {
            $passwordPlain.val(data);
          }

          // Show complicate button
          $complicate.show();

        }

        // Data are empty
        else {
          console.log('retrieved password is empty')
        }

      }

    });

  });

  // Show complicate button
  $passwordFinnal.on('keyup change', function() {

    // Set val
    var val = $(this).val();

    // Change indicator
    changeIndicator(val);

    // Show copy
    showCopy(val.length > 0);

    // Show
    if(val.length >= 10) {
      $complicate.show();
    }

    // Hide
    else {
      $complicate.hide();
    }

  });

  // Copy to clipboard
  $copy.on('click', function() {

    // Create temp
    var $temp = $('<input>');

    // Append tempt to body
    $('body').append($temp);

    // Select text
    $temp.val($passwordFinnal.val()).select();

    // Copy
    document.execCommand('copy');

    // Remove temp
    $temp.remove();

    // Alert
    alert("Heslo bylo zkopírováno");

  });

})($);