/*!
 * The Final Countdown for jQuery v2.2.0 (http://hilios.github.io/jQuery.countdown/)
 * Copyright (c) 2016 Edson Hilios
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
(function(factory) {
  'use strict';
  if (typeof define === 'function' && define.amd) {
    define(['jquery'], factory);
  } else {
    factory(jQuery);
  }
})(function($) {
  'use strict';
  var instances = [], matchers = [], defaultOptions = {
    precision: 100,
    elapse: false,
    defer: false,
  };
  matchers.push(/^[0-9]*$/.source);
  matchers.push(/([0-9]{1,2}\/){2}[0-9]{4}( [0-9]{1,2}(:[0-9]{2}){2})?/.source);
  matchers.push(
      /[0-9]{4}([\/\-][0-9]{1,2}){2}( [0-9]{1,2}(:[0-9]{2}){2})?/.source);
  matchers = new RegExp(matchers.join('|'));

  function parseDateString(dateString) {
    if (dateString instanceof Date) {
      return dateString;
    }
    if (String(dateString).match(matchers)) {
      if (String(dateString).match(/^[0-9]*$/)) {
        dateString = Number(dateString);
      }
      if (String(dateString).match(/\-/)) {
        dateString = String(dateString).replace(/\-/g, '/');
      }
      return new Date(dateString);
    } else {
      throw new Error('Couldn\'t cast `' + dateString + '` to a date object.');
    }
  }

  var DIRECTIVE_KEY_MAP = {
    Y: 'years',
    m: 'months',
    n: 'daysToMonth',
    d: 'daysToWeek',
    w: 'weeks',
    W: 'weeksToMonth',
    H: 'hours',
    M: 'minutes',
    S: 'seconds',
    D: 'totalDays',
    I: 'totalHours',
    N: 'totalMinutes',
    T: 'totalSeconds',
  };

  function escapedRegExp(str) {
    var sanitize = str.toString().replace(/([.?*+^$[\]\\(){}|-])/g, '\\$1');
    return new RegExp(sanitize);
  }

  function strftime(offsetObject) {
    return function(format) {
      var directives = format.match(/%(-|!)?[A-Z]{1}(:[^;]+;)?/gi);
      if (directives) {
        for (var i = 0, len = directives.length; i < len; ++i) {
          var directive = directives[i].match(/%(-|!)?([a-zA-Z]{1})(:[^;]+;)?/),
              regexp = escapedRegExp(directive[0]),
              modifier = directive[1] || '', plural = directive[3] || '',
              value = null;
          directive = directive[2];
          if (DIRECTIVE_KEY_MAP.hasOwnProperty(directive)) {
            value = DIRECTIVE_KEY_MAP[directive];
            value = Number(offsetObject[value]);
          }
          if (value !== null) {
            if (modifier === '!') {
              value = pluralize(plural, value);
            }
            if (modifier === '') {
              if (value < 10) {
                value = '0' + value.toString();
              }
            }
            format = format.replace(regexp, value.toString());
          }
        }
      }
      format = format.replace(/%%/, '%');
      return format;
    };
  }

  function pluralize(format, count) {
    var plural = 's', singular = '';
    if (format) {
      format = format.replace(/(:|;|\s)/gi, '').split(/\,/);
      if (format.length === 1) {
        plural = format[0];
      } else {
        singular = format[0];
        plural = format[1];
      }
    }
    if (count === 1) {
      return singular;
    } else {
      return plural;
    }
  }

  var Countdown = function(el, finalDate, options) {
    this.el = el;
    this.$el = $(el);
    this.interval = null;
    this.offset = {};
    this.options = $.extend({}, defaultOptions);
    this.instanceNumber = instances.length;
    instances.push(this);
    this.$el.data('countdown-instance', this.instanceNumber);
    if (options) {
      if (typeof options === 'function') {
        this.$el.on('update.countdown', options);
        this.$el.on('stoped.countdown', options);
        this.$el.on('finish.countdown', options);
      } else {
        this.options = $.extend({}, defaultOptions, options);
      }
    }
    this.setFinalDate(finalDate);
    if (this.options.defer === false) {
      this.start();
    }
  };
  $.extend(Countdown.prototype, {
    start: function() {
      if (this.interval !== null) {
        clearInterval(this.interval);
      }
      var self = this;
      this.update();
      this.interval = setInterval(function() {
        self.update.call(self);
      }, this.options.precision);
    },
    stop: function() {
      clearInterval(this.interval);
      this.interval = null;
      this.dispatchEvent('stoped');
    },
    toggle: function() {
      if (this.interval) {
        this.stop();
      } else {
        this.start();
      }
    },
    pause: function() {
      this.stop();
    },
    resume: function() {
      this.start();
    },
    remove: function() {
      this.stop.call(this);
      instances[this.instanceNumber] = null;
      delete this.$el.data().countdownInstance;
    },
    setFinalDate: function(value) {
      this.finalDate = parseDateString(value);
    },
    update: function() {
      if (this.$el.closest('html').length === 0) {
        this.remove();
        return;
      }
      var hasEventsAttached = $._data(this.el, 'events') !== undefined,
          now = new Date(), newTotalSecsLeft;
      newTotalSecsLeft = this.finalDate.getTime() - now.getTime();
      newTotalSecsLeft = Math.ceil(newTotalSecsLeft / 1e3);
      newTotalSecsLeft = !this.options.elapse && newTotalSecsLeft < 0
          ? 0
          : Math.abs(newTotalSecsLeft);
      if (this.totalSecsLeft === newTotalSecsLeft || !hasEventsAttached) {
        return;
      } else {
        this.totalSecsLeft = newTotalSecsLeft;
      }
      this.elapsed = now >= this.finalDate;
      this.offset = {
        seconds: this.totalSecsLeft % 60,
        minutes: Math.floor(this.totalSecsLeft / 60) % 60,
        hours: Math.floor(this.totalSecsLeft / 60 / 60) % 24,
        days: Math.floor(this.totalSecsLeft / 60 / 60 / 24) % 7,
        daysToWeek: Math.floor(this.totalSecsLeft / 60 / 60 / 24) % 7,
        daysToMonth: Math.floor(this.totalSecsLeft / 60 / 60 / 24 % 30.4368),
        weeks: Math.floor(this.totalSecsLeft / 60 / 60 / 24 / 7),
        weeksToMonth: Math.floor(this.totalSecsLeft / 60 / 60 / 24 / 7) % 4,
        months: Math.floor(this.totalSecsLeft / 60 / 60 / 24 / 30.4368),
        years: Math.abs(this.finalDate.getFullYear() - now.getFullYear()),
        totalDays: Math.floor(this.totalSecsLeft / 60 / 60 / 24),
        totalHours: Math.floor(this.totalSecsLeft / 60 / 60),
        totalMinutes: Math.floor(this.totalSecsLeft / 60),
        totalSeconds: this.totalSecsLeft,
      };
      if (!this.options.elapse && this.totalSecsLeft === 0) {
        this.stop();
        this.dispatchEvent('finish');
      } else {
        this.dispatchEvent('update');
      }
    },
    dispatchEvent: function(eventName) {
      var event = $.Event(eventName + '.countdown');
      event.finalDate = this.finalDate;
      event.elapsed = this.elapsed;
      event.offset = $.extend({}, this.offset);
      event.strftime = strftime(this.offset);
      this.$el.trigger(event);
    },
  });
  $.fn.countdown = function() {
    var argumentsArray = Array.prototype.slice.call(arguments, 0);
    return this.each(function() {
      var instanceNumber = $(this).data('countdown-instance');
      if (instanceNumber !== undefined) {
        var instance = instances[instanceNumber], method = argumentsArray[0];
        if (Countdown.prototype.hasOwnProperty(method)) {
          instance[method].apply(instance, argumentsArray.slice(1));
        } else if (String(method).match(/^[$A-Z_][0-9A-Z_$]*$/i) === null) {
          instance.setFinalDate.call(instance, method);
          instance.start();
        } else {
          $.error(
              'Method %s does not exist on jQuery.countdown'.replace(/\%s/gi,
                  method));
        }
      } else {
        new Countdown(this, argumentsArray[0], argumentsArray[1]);
      }
    });
  };
});