/*!

* Timepicker Component for Twitter Bootstrap
*
* Copyright 2013 Joris de Wit
*
* Contributors https://github.com/jdewit/bootstrap-timepicker/graphs/contributors
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

(function($, window, document, undefined) {

'use strict';

// TIMEPICKER PUBLIC CLASS DEFINITION
var Timepicker = function(element, options) {
  this.widget = '';
  this.$element = $(element);
  this.defaultTime = options.defaultTime;
  this.disableFocus = options.disableFocus;
  this.isOpen = options.isOpen;
  this.minuteStep = options.minuteStep;
  this.modalBackdrop = options.modalBackdrop;
  this.secondStep = options.secondStep;
  this.showInputs = options.showInputs;
  this.showMeridian = options.showMeridian;
  this.showSeconds = options.showSeconds;
  this.template = options.template;
  this.appendWidgetTo = options.appendWidgetTo;

  this._init();
};

Timepicker.prototype = {

  constructor: Timepicker,

  _init: function() {
    var self = this;

    if (this.$element.parent().hasClass('input-append') || this.$element.parent().hasClass('input-prepend')) {
      this.$element.parent('.input-append, .input-prepend').find('.add-on').on({
        'click.timepicker': $.proxy(this.showWidget, this)
      });
      this.$element.on({
        'focus.timepicker': $.proxy(this.highlightUnit, this),
        'click.timepicker': $.proxy(this.highlightUnit, this),
        'keydown.timepicker': $.proxy(this.elementKeydown, this),
        'blur.timepicker': $.proxy(this.blurElement, this)
      });
    } else {
      if (this.template) {
        this.$element.on({
          'focus.timepicker': $.proxy(this.showWidget, this),
          'click.timepicker': $.proxy(this.showWidget, this),
          'blur.timepicker': $.proxy(this.blurElement, this)
        });
      } else {
        this.$element.on({
          'focus.timepicker': $.proxy(this.highlightUnit, this),
          'click.timepicker': $.proxy(this.highlightUnit, this),
          'keydown.timepicker': $.proxy(this.elementKeydown, this),
          'blur.timepicker': $.proxy(this.blurElement, this)
        });
      }
    }

    if (this.template !== false) {
      this.$widget = $(this.getTemplate()).prependTo(this.$element.parents(this.appendWidgetTo)).on('click', $.proxy(this.widgetClick, this));
    } else {
      this.$widget = false;
    }

    if (this.showInputs && this.$widget !== false) {
      this.$widget.find('input').each(function() {
        $(this).on({
          'click.timepicker': function() { $(this).select(); },
          'keydown.timepicker': $.proxy(self.widgetKeydown, self)
        });
      });
    }

    this.setDefaultTime(this.defaultTime);
  },

  blurElement: function() {
    this.highlightedUnit = undefined;
    this.updateFromElementVal();
  },

  decrementHour: function() {
    if (this.showMeridian) {
      if (this.hour === 1) {
        this.hour = 12;
      } else if (this.hour === 12) {
        this.hour--;

        return this.toggleMeridian();
      } else if (this.hour === 0) {
        this.hour = 11;

        return this.toggleMeridian();
      } else {
        this.hour--;
      }
    } else {
      if (this.hour === 0) {
        this.hour = 23;
      } else {
        this.hour--;
      }
    }
    this.update();
  },

  decrementMinute: function(step) {
    var newVal;

    if (step) {
      newVal = this.minute - step;
    } else {
      newVal = this.minute - this.minuteStep;
    }

    if (newVal < 0) {
      this.decrementHour();
      this.minute = newVal + 60;
    } else {
      this.minute = newVal;
    }
    this.update();
  },

  decrementSecond: function() {
    var newVal = this.second - this.secondStep;

    if (newVal < 0) {
      this.decrementMinute(true);
      this.second = newVal + 60;
    } else {
      this.second = newVal;
    }
    this.update();
  },

  elementKeydown: function(e) {
    switch (e.keyCode) {
    case 9: //tab
      this.updateFromElementVal();

      switch (this.highlightedUnit) {
      case 'hour':
        e.preventDefault();
        this.highlightNextUnit();
        break;
      case 'minute':
        if (this.showMeridian || this.showSeconds) {
          e.preventDefault();
          this.highlightNextUnit();
        }
        break;
      case 'second':
        if (this.showMeridian) {
          e.preventDefault();
          this.highlightNextUnit();
        }
        break;
      }
      break;
    case 27: // escape
      this.updateFromElementVal();
      break;
    case 37: // left arrow
      e.preventDefault();
      this.highlightPrevUnit();
      this.updateFromElementVal();
      break;
    case 38: // up arrow
      e.preventDefault();
      switch (this.highlightedUnit) {
      case 'hour':
        this.incrementHour();
        this.highlightHour();
        break;
      case 'minute':
        this.incrementMinute();
        this.highlightMinute();
        break;
      case 'second':
        this.incrementSecond();
        this.highlightSecond();
        break;
      case 'meridian':
        this.toggleMeridian();
        this.highlightMeridian();
        break;
      }
      break;
    case 39: // right arrow
      e.preventDefault();
      this.updateFromElementVal();
      this.highlightNextUnit();
      break;
    case 40: // down arrow
      e.preventDefault();
      switch (this.highlightedUnit) {
      case 'hour':
        this.decrementHour();
        this.highlightHour();
        break;
      case 'minute':
        this.decrementMinute();
        this.highlightMinute();
        break;
      case 'second':
        this.decrementSecond();
        this.highlightSecond();
        break;
      case 'meridian':
        this.toggleMeridian();
        this.highlightMeridian();
        break;
      }
      break;
    }
  },

  formatTime: function(hour, minute, second, meridian) {
    hour = hour < 10 ? '0' + hour : hour;
    minute = minute < 10 ? '0' + minute : minute;
    second = second < 10 ? '0' + second : second;

    return hour + ':' + minute + (this.showSeconds ? ':' + second : '') + (this.showMeridian ? ' ' + meridian : '');
  },

  getCursorPosition: function() {
    var input = this.$element.get(0);

    if ('selectionStart' in input) {// Standard-compliant browsers

      return input.selectionStart;
    } else if (document.selection) {// IE fix
      input.focus();
      var sel = document.selection.createRange(),
        selLen = document.selection.createRange().text.length;

      sel.moveStart('character', - input.value.length);

      return sel.text.length - selLen;
    }
  },

  getTemplate: function() {
    var template,
      hourTemplate,
      minuteTemplate,
      secondTemplate,
      meridianTemplate,
      templateContent;

    if (this.showInputs) {
      hourTemplate = '<input type="text" name="hour" class="bootstrap-timepicker-hour" maxlength="2"/>';
      minuteTemplate = '<input type="text" name="minute" class="bootstrap-timepicker-minute" maxlength="2"/>';
      secondTemplate = '<input type="text" name="second" class="bootstrap-timepicker-second" maxlength="2"/>';
      meridianTemplate = '<input type="text" name="meridian" class="bootstrap-timepicker-meridian" maxlength="2"/>';
    } else {
      hourTemplate = '<span class="bootstrap-timepicker-hour"></span>';
      minuteTemplate = '<span class="bootstrap-timepicker-minute"></span>';
      secondTemplate = '<span class="bootstrap-timepicker-second"></span>';
      meridianTemplate = '<span class="bootstrap-timepicker-meridian"></span>';
    }

    templateContent = '<table>'+
       '<tr>'+
         '<td><a href="#" data-action="incrementHour"><i class="icon-chevron-up"></i></a></td>'+
         '<td class="separator">&nbsp;</td>'+
         '<td><a href="#" data-action="incrementMinute"><i class="icon-chevron-up"></i></a></td>'+
         (this.showSeconds ?
           '<td class="separator">&nbsp;</td>'+
           '<td><a href="#" data-action="incrementSecond"><i class="icon-chevron-up"></i></a></td>'
         : '') +
         (this.showMeridian ?
           '<td class="separator">&nbsp;</td>'+
           '<td class="meridian-column"><a href="#" data-action="toggleMeridian"><i class="icon-chevron-up"></i></a></td>'
         : '') +
       '</tr>'+
       '<tr>'+
         '<td>'+ hourTemplate +'</td> '+
         '<td class="separator">:</td>'+
         '<td>'+ minuteTemplate +'</td> '+
         (this.showSeconds ?
          '<td class="separator">:</td>'+
          '<td>'+ secondTemplate +'</td>'
         : '') +
         (this.showMeridian ?
          '<td class="separator">&nbsp;</td>'+
          '<td>'+ meridianTemplate +'</td>'
         : '') +
       '</tr>'+
       '<tr>'+
         '<td><a href="#" data-action="decrementHour"><i class="icon-chevron-down"></i></a></td>'+
         '<td class="separator"></td>'+
         '<td><a href="#" data-action="decrementMinute"><i class="icon-chevron-down"></i></a></td>'+
         (this.showSeconds ?
          '<td class="separator">&nbsp;</td>'+
          '<td><a href="#" data-action="decrementSecond"><i class="icon-chevron-down"></i></a></td>'
         : '') +
         (this.showMeridian ?
          '<td class="separator">&nbsp;</td>'+
          '<td><a href="#" data-action="toggleMeridian"><i class="icon-chevron-down"></i></a></td>'
         : '') +
       '</tr>'+
     '</table>';

    switch(this.template) {
    case 'modal':
      template = '<div class="bootstrap-timepicker-widget modal hide fade in" data-backdrop="'+ (this.modalBackdrop ? 'true' : 'false') +'">'+
        '<div class="modal-header">'+
          '<a href="#" class="close" data-dismiss="modal">×</a>'+
          '<h3>Pick a Time</h3>'+
        '</div>'+
        '<div class="modal-content">'+
          templateContent +
        '</div>'+
        '<div class="modal-footer">'+
          '<a href="#" class="btn btn-primary" data-dismiss="modal">OK</a>'+
        '</div>'+
      '</div>';
      break;
    case 'dropdown':
      template = '<div class="bootstrap-timepicker-widget dropdown-menu">'+ templateContent +'</div>';
      break;
    }

    return template;
  },

  getTime: function() {
    return this.formatTime(this.hour, this.minute, this.second, this.meridian);
  },

  hideWidget: function() {
    if (this.isOpen === false) {
      return;
    }

    if (this.showInputs) {
      this.updateFromWidgetInputs();
    }

    this.$element.trigger({
      'type': 'hide.timepicker',
      'time': {
        'value': this.getTime(),
        'hours': this.hour,
        'minutes': this.minute,
        'seconds': this.second,
        'meridian': this.meridian
      }
    });

    if (this.template === 'modal') {
      this.$widget.modal('hide');
    } else {
      this.$widget.removeClass('open');
    }

    $(document).off('mousedown.timepicker');

    this.isOpen = false;
  },

  highlightUnit: function() {
    this.position = this.getCursorPosition();
    if (this.position >= 0 && this.position <= 2) {
      this.highlightHour();
    } else if (this.position >= 3 && this.position <= 5) {
      this.highlightMinute();
    } else if (this.position >= 6 && this.position <= 8) {
      if (this.showSeconds) {
        this.highlightSecond();
      } else {
        this.highlightMeridian();
      }
    } else if (this.position >= 9 && this.position <= 11) {
      this.highlightMeridian();
    }
  },

  highlightNextUnit: function() {
    switch (this.highlightedUnit) {
    case 'hour':
      this.highlightMinute();
      break;
    case 'minute':
      if (this.showSeconds) {
        this.highlightSecond();
      } else if (this.showMeridian){
        this.highlightMeridian();
      } else {
        this.highlightHour();
      }
      break;
    case 'second':
      if (this.showMeridian) {
        this.highlightMeridian();
      } else {
        this.highlightHour();
      }
      break;
    case 'meridian':
      this.highlightHour();
      break;
    }
  },

  highlightPrevUnit: function() {
    switch (this.highlightedUnit) {
    case 'hour':
      this.highlightMeridian();
      break;
    case 'minute':
      this.highlightHour();
      break;
    case 'second':
      this.highlightMinute();
      break;
    case 'meridian':
      if (this.showSeconds) {
        this.highlightSecond();
      } else {
        this.highlightMinute();
      }
      break;
    }
  },

  highlightHour: function() {
    var $element = this.$element.get(0);

    this.highlightedUnit = 'hour';

    if ($element.setSelectionRange) {
      setTimeout(function() {
        $element.setSelectionRange(0,2);
      }, 0);
    }
  },

  highlightMinute: function() {
    var $element = this.$element.get(0);

    this.highlightedUnit = 'minute';

    if ($element.setSelectionRange) {
      setTimeout(function() {
        $element.setSelectionRange(3,5);
      }, 0);
    }
  },

  highlightSecond: function() {
    var $element = this.$element.get(0);

    this.highlightedUnit = 'second';

    if ($element.setSelectionRange) {
      setTimeout(function() {
        $element.setSelectionRange(6,8);
      }, 0);
    }
  },

  highlightMeridian: function() {
    var $element = this.$element.get(0);

    this.highlightedUnit = 'meridian';

    if ($element.setSelectionRange) {
      if (this.showSeconds) {
        setTimeout(function() {
          $element.setSelectionRange(9,11);
        }, 0);
      } else {
        setTimeout(function() {
          $element.setSelectionRange(6,8);
        }, 0);
      }
    }
  },

  incrementHour: function() {
    if (this.showMeridian) {
      if (this.hour === 11) {
        this.hour++;
        return this.toggleMeridian();
      } else if (this.hour === 12) {
        this.hour = 0;
      }
    }
    if (this.hour === 23) {
      this.hour = 0;

      return;
    }
    this.hour++;
    this.update();
  },

  incrementMinute: function(step) {
    var newVal;

    if (step) {
      newVal = this.minute + step;
    } else {
      newVal = this.minute + this.minuteStep - (this.minute % this.minuteStep);
    }

    if (newVal > 59) {
      this.incrementHour();
      this.minute = newVal - 60;
    } else {
      this.minute = newVal;
    }
    this.update();
  },

  incrementSecond: function() {
    var newVal = this.second + this.secondStep - (this.second % this.secondStep);

    if (newVal > 59) {
      this.incrementMinute(true);
      this.second = newVal - 60;
    } else {
      this.second = newVal;
    }
    this.update();
  },

  remove: function() {
    $('document').off('.timepicker');
    if (this.$widget) {
      this.$widget.remove();
    }
    delete this.$element.data().timepicker;
  },

  setDefaultTime: function(defaultTime){
    if (!this.$element.val()) {
      if (defaultTime === 'current') {
        var dTime = new Date(),
          hours = dTime.getHours(),
          minutes = Math.floor(dTime.getMinutes() / this.minuteStep) * this.minuteStep,
          seconds = Math.floor(dTime.getSeconds() / this.secondStep) * this.secondStep,
          meridian = 'AM';

        if (this.showMeridian) {
          if (hours === 0) {
            hours = 12;
          } else if (hours >= 12) {
            if (hours > 12) {
              hours = hours - 12;
            }
            meridian = 'PM';
          } else {
            meridian = 'AM';
          }
        }

        this.hour = hours;
        this.minute = minutes;
        this.second = seconds;
        this.meridian = meridian;

        this.update();

      } else if (defaultTime === false) {
        this.hour = 0;
        this.minute = 0;
        this.second = 0;
        this.meridian = 'AM';
      } else {
        this.setTime(defaultTime);
      }
    } else {
      this.updateFromElementVal();
    }
  },

  setTime: function(time) {
    var arr,
      timeArray;

    if (this.showMeridian) {
      arr = time.split(' ');
      timeArray = arr[0].split(':');
      this.meridian = arr[1];
    } else {
      timeArray = time.split(':');
    }

    this.hour = parseInt(timeArray[0], 10);
    this.minute = parseInt(timeArray[1], 10);
    this.second = parseInt(timeArray[2], 10);

    if (isNaN(this.hour)) {
      this.hour = 0;
    }
    if (isNaN(this.minute)) {
      this.minute = 0;
    }

    if (this.showMeridian) {
      if (this.hour > 12) {
        this.hour = 12;
      } else if (this.hour < 1) {
        this.hour = 12;
      }

      if (this.meridian === 'am' || this.meridian === 'a') {
        this.meridian = 'AM';
      } else if (this.meridian === 'pm' || this.meridian === 'p') {
        this.meridian = 'PM';
      }

      if (this.meridian !== 'AM' && this.meridian !== 'PM') {
        this.meridian = 'AM';
      }
    } else {
      if (this.hour >= 24) {
        this.hour = 23;
      } else if (this.hour < 0) {
        this.hour = 0;
      }
    }

    if (this.minute < 0) {
      this.minute = 0;
    } else if (this.minute >= 60) {
      this.minute = 59;
    }

    if (this.showSeconds) {
      if (isNaN(this.second)) {
        this.second = 0;
      } else if (this.second < 0) {
        this.second = 0;
      } else if (this.second >= 60) {
        this.second = 59;
      }
    }

    this.update();
  },

  showWidget: function() {
    if (this.isOpen) {
      return;
    }

    if (this.$element.is(':disabled')) {
      return;
    }

    var self = this;
    $(document).on('mousedown.timepicker', function (e) {
      // Clicked outside the timepicker, hide it
      if ($(e.target).closest('.bootstrap-timepicker-widget').length === 0) {
        self.hideWidget();
      }
    });

    this.$element.trigger({
      'type': 'show.timepicker',
      'time': {
        'value': this.getTime(),
        'hours': this.hour,
        'minutes': this.minute,
        'seconds': this.second,
        'meridian': this.meridian
      }
    });

    if (this.disableFocus) {
      this.$element.blur();
    }

    this.updateFromElementVal();

    if (this.template === 'modal') {
      this.$widget.modal('show').on('hidden', $.proxy(this.hideWidget, this));
    } else {
      if (this.isOpen === false) {
        this.$widget.addClass('open');
      }
    }

    this.isOpen = true;
  },

  toggleMeridian: function() {
    this.meridian = this.meridian === 'AM' ? 'PM' : 'AM';
    this.update();
  },

  update: function() {
    this.$element.trigger({
      'type': 'changeTime.timepicker',
      'time': {
        'value': this.getTime(),
        'hours': this.hour,
        'minutes': this.minute,
        'seconds': this.second,
        'meridian': this.meridian
      }
    });

    this.updateElement();
    this.updateWidget();
  },

  updateElement: function() {
    this.$element.val(this.getTime()).change();
  },

  updateFromElementVal: function() {
    var val = this.$element.val();

    if (val) {
      this.setTime(val);
    }
  },

  updateWidget: function() {
    if (this.$widget === false) {
      return;
    }

    var hour = this.hour < 10 ? '0' + this.hour : this.hour,
        minute = this.minute < 10 ? '0' + this.minute : this.minute,
        second = this.second < 10 ? '0' + this.second : this.second;

    if (this.showInputs) {
      this.$widget.find('input.bootstrap-timepicker-hour').val(hour);
      this.$widget.find('input.bootstrap-timepicker-minute').val(minute);

      if (this.showSeconds) {
        this.$widget.find('input.bootstrap-timepicker-second').val(second);
      }
      if (this.showMeridian) {
        this.$widget.find('input.bootstrap-timepicker-meridian').val(this.meridian);
      }
    } else {
      this.$widget.find('span.bootstrap-timepicker-hour').text(hour);
      this.$widget.find('span.bootstrap-timepicker-minute').text(minute);

      if (this.showSeconds) {
        this.$widget.find('span.bootstrap-timepicker-second').text(second);
      }
      if (this.showMeridian) {
        this.$widget.find('span.bootstrap-timepicker-meridian').text(this.meridian);
      }
    }
  },

  updateFromWidgetInputs: function() {
    if (this.$widget === false) {
      return;
    }
    var time = $('input.bootstrap-timepicker-hour', this.$widget).val() + ':' +
      $('input.bootstrap-timepicker-minute', this.$widget).val() +
      (this.showSeconds ? ':' + $('input.bootstrap-timepicker-second', this.$widget).val() : '') +
      (this.showMeridian ? ' ' + $('input.bootstrap-timepicker-meridian', this.$widget).val() : '');

    this.setTime(time);
  },

  widgetClick: function(e) {
    e.stopPropagation();
    e.preventDefault();

    var action = $(e.target).closest('a').data('action');
    if (action) {
      this[action]();
    }
  },

  widgetKeydown: function(e) {
    var $input = $(e.target).closest('input'),
        name = $input.attr('name');

    switch (e.keyCode) {
    case 9: //tab
      if (this.showMeridian) {
        if (name === 'meridian') {
          return this.hideWidget();
        }
      } else {
        if (this.showSeconds) {
          if (name === 'second') {
            return this.hideWidget();
          }
        } else {
          if (name === 'minute') {
            return this.hideWidget();
          }
        }
      }

      this.updateFromWidgetInputs();
      break;
    case 27: // escape
      this.hideWidget();
      break;
    case 38: // up arrow
      e.preventDefault();
      switch (name) {
      case 'hour':
        this.incrementHour();
        break;
      case 'minute':
        this.incrementMinute();
        break;
      case 'second':
        this.incrementSecond();
        break;
      case 'meridian':
        this.toggleMeridian();
        break;
      }
      break;
    case 40: // down arrow
      e.preventDefault();
      switch (name) {
      case 'hour':
        this.decrementHour();
        break;
      case 'minute':
        this.decrementMinute();
        break;
      case 'second':
        this.decrementSecond();
        break;
      case 'meridian':
        this.toggleMeridian();
        break;
      }
      break;
    }
  }
};

//TIMEPICKER PLUGIN DEFINITION
$.fn.timepicker = function(option) {
  var args = Array.apply(null, arguments);
  args.shift();
  return this.each(function() {
    var $this = $(this),
      data = $this.data('timepicker'),
      options = typeof option === 'object' && option;

    if (!data) {
      $this.data('timepicker', (data = new Timepicker(this, $.extend({}, $.fn.timepicker.defaults, options, $(this).data()))));
    }

    if (typeof option === 'string') {
      data[option].apply(data, args);
    }
  });
};

$.fn.timepicker.defaults = {
  defaultTime: 'current',
  disableFocus: false,
  isOpen: false,
  minuteStep: 15,
  modalBackdrop: false,
  secondStep: 15,
  showSeconds: false,
  showInputs: true,
  showMeridian: true,
  template: 'dropdown',
  appendWidgetTo: '.bootstrap-timepicker'
};

$.fn.timepicker.Constructor = Timepicker;

})(jQuery, window, document);