jQuery(function($){
  $.fn.moodular = function(options){
    var el = null;
    var opts = $.extend({}, $.fn.moodular.defaults, options);
    var ctrls = $.extend({}, $.fn.moodular.controls);
    var effects = $.extend({}, $.fn.moodular.effects);
    this.each(function(){
      el = new $moodular(this, opts, ctrls, effects);
      $(window).bind('resize', function () { el._resize(); });
    });
    return opts.api ? el : null;
  };
  $.moodular = function(e, opts, ctrls, effects){
    this.e = $(e);
    if (opts.random) {
      var elems = this.e.children($('> ' + opts.item));
      elems.sort(function() { return (Math.round(Math.random())-0.5); });
      this.e.remove($('> ' + opts.item));
      for(var i=0; i < elems.length; i++)
        this.e.append(elems[i]);
    }
    if (opts.continuous) $(e).html($(e).html() + $(e).html());
    this.aItems = null;
    this.nbItems = 0;
    this.current = 0;
    this.locked = false;
    this.dep = 0;
    this.timerMoving = null;
    this.opts = opts;
    this.controls = ctrls;
    this.effects = effects;
    this.direction = ((opts.direction == 'left') || (opts.direction == 'top') ? 'next' : 'prev');
    this.pos = ((opts.direction == 'left') || (opts.direction == 'right') ? 'left' : 'top');
    this.dir = ((opts.direction == 'right') || (opts.direction == 'bottom') ? -1 : 1);
    this.vertical = (this.pos == 'left' ? false : true);
    this._init();
  };
  var $moodular = $.moodular;
  $moodular.fn = $moodular.prototype = {
    moodular: '2.3'
  };
  $moodular.fn.extend = $moodular.extend = $.extend;
  $moodular.fn.extend({
    _init: function(){
      var self = this;
      this._resize();
      this.e.wrap('<div></div>');
      this.e.parent().css({
        'position' : 'relative',
        'overflow' : 'hidden',
        'width'  : this.e.width(),
        'height' : this.e.height()
      });
      this.e.css({
        'position' : 'absolute'
      });
      s = 0;
      $('> ' + this.opts.item, this.e).each(function() {
        if (this.vertical) {
          s += parseInt($(this).outerHeight(true));
        }
        else {
          s += parseInt($(this).outerWidth(true));
        }
      });
      this.e.css(this.vertical ? 'height' : 'width', s + 'px');
      this.aItems = $('> ' + this.opts.item, this.e);
      this.nbItems = this.aItems.length;
      if (!this.opts.continuous) this.nbItems = this.nbItems * 2;
      var control = this.opts.controls.split(' ');
      var i;
      for (i = 0; i < control.length; i++) {
        if ($.isFunction(this.controls[control[i]]))
          this.controls[control[i]](this);
      }
      var effect = this.opts.effects.split(' ');
      for (i = 0; i < effect.length; i++) {
        if ($.isFunction(this.effects.init[effect[i]]))
          this.effects.init[effect[i]](this);
      }
      if (this.opts.startOn) {
        this.speed = this.opts.speed;
        this.opts.speed = 1;
        this.moveTo(this.opts.startOn);
      }
      if (this.opts.auto) {
        setTimeout(function(){
          self._animate('next');
        }, self.opts.dispTimeout);
      }
    },
    _animate: function(dir){
      dir = (dir == undefined ? this.direction : dir);
      if (!this.locked) {
        this.locked = true;
        clearTimeout(this.timerMoving);
        this.dep = this.dep == 0 ? this.opts.scroll : this.dep;
        if (this.dir == -1) {
          if (dir == "next") {
            dir = "prev";
          }
          else if (dir == "prev") {
            dir = "next";
          }
        }
        if (dir != 'next') {
          this.dep *= -1;
        }
        var cont = true;
        if (!this.opts.continuous) {
          if (dir == 'next') {
            if (this.current >= ((this.nbItems / 2) - 1)) {
              cont = false;
              this.locked = false;
            }
          }
          else {
            if (this.current <= 0) {
              cont = false;
              this.locked = false;
            }
          }
        }
        if (cont) {
          this._beforeMoving();
        }
      }
    },
    _beforeMoving: function(){
      var effect = this.opts.effects.split(' ');
      var i;
      for (i = 0; i < effect.length; i++) {
        if ($.isFunction(this.effects.before[effect[i]]))
          this.effects.before[effect[i]](this, (this.dep < 0 ? -1 : 1));
      }
      if (this.dep < 0 && this.opts.continuous) {
        var size = 0;
        for (i = 0; i < Math.abs(this.dep); i++) {
          var item = $('> ' + this.opts.item + ':last', this.e);
          size += parseInt(item.css(this.vertical ? 'height' : 'width'));
          $('> ' + this.opts.item + ':last', this.e).remove();
          this.e.prepend(item);
        }
        this.e.css(this.pos, -size);
      }
      this._move();
    },
    _move: function(){
      var self = this;
      if ($.isFunction(this.opts.move)) {
        this.opts.move(this, function(){
          self._afterMoving();
        });
      }
      else {
        var size = 0;
        var i;
        if (this.dep > 0) {
          for (i = 0; i < this.dep; i++) {
            if (this.vertical) {
              size += parseInt(this.aItems.eq(this._realpos(this.current) + i).outerHeight(true));
            }
            else {
              size += parseInt(this.aItems.eq(this._realpos(this.current) + i).outerWidth(true));
            }
          }
        }
        else {
          if (!this.opts.continuous && this.current <=0) {}
          else {
            for (i = 0; i < Math.abs(this.dep); i++) {
              if (this.vertical) {
                size += parseInt(this.aItems.eq(this._realpos(this.current) - i).outerHeight(true));
              }
              else {
                size += parseInt(this.aItems.eq(this._realpos(this.current) - i).outerWidth(true));
              }
            }
          }
        }
        if (this.e.css(this.pos) == 'auto') this.e.css(this.pos, 0);
        var dest = parseInt(this.e.css(this.pos)) + (this.dep > 0 ? -1 : 1) * size;
        if (!this.opts.continuous) {
          if (dest > 0) dest = 0;
          if (this.vertical) {
            if ((parseInt(this.e.height()) + dest) < parseInt(this.e.parent().height())) {
              dest = parseInt(this.e.parent().height()) - parseInt(this.e.height());
            }
          }
          else {
            if ((parseInt(this.e.width()) + dest) < parseInt(this.e.parent().width())) {
              dest = parseInt(this.e.parent().width()) - parseInt(this.e.width()) ;
            }
          }
        }
        if (this.vertical) {
          this.e.stop(true, true).animate({
            top: parseInt(dest) + 'px'
          }, this.opts.speed, this.opts.easing, function(){
            self._afterMoving();
          });
        }
        else {
          this.e.stop(true, true).animate({
            left: parseInt(dest) + 'px'
          }, this.opts.speed, this.opts.easing, function(){
            self._afterMoving();
          });
        }
      }
    },
    _afterMoving: function(){
      var i;
      if (this.dep > 0 && this.opts.continuous) {
        for (i = 0; i < this.dep; i++) {
          var item = $('> ' + this.opts.item + ':first', this.e);
          $('> ' + this.opts.item + ':first', this.e).remove();
          this.e.append(item);
        }
        this.e.css(this.pos, 0);
      }
      var self = this;
      this.current = this.current + this.dep;
      if (this.current == -1) {
        if (this.opts.continuous)
          this.current = this.nbItems - 1;
        else
          this.current = 0;
      }
      else {
        if (this.current == this.nbItems) {
          this.current = 0;
        }
        else {
          this.current = this._realpos(this.current);
        }
      }
      this.dep = 0;
      this.locked = false;
      var effect = this.opts.effects.split(' ');
      for (i = 0; i < effect.length; i++) {
        if ($.isFunction(this.effects.after[effect[i]]))
          this.effects.after[effect[i]](this);
      }
      for (i = 0; i < this.opts.callbacks.length; i++) {
        this.opts.callbacks[i](this);
      }
      var control = this.opts.controls.split(' ');
      for (i = 0; i < control.length; i++) {
        if ($.isFunction(this.controls.callback[control[i]]))
          this.controls.callback[control[i]](this);
      }
      if (this.opts.startOn) {
        this.opts.speed = this.speed;
      }
      if (this.opts.auto) {
        this.timerMoving = setTimeout(function(){
          self._animate('next');
        }, this.opts.dispTimeout);
      }
    },
    _realpos: function(i){
      if (i < 0) i = (this.nbItems / 2) - i;
      return (i < (this.nbItems / 2) ? i : (i - (this.nbItems / 2)));
    },
    _resize: function () {
      var s = $('> ' + this.opts.item, this.e).css(this.vertical ? 'height' : 'width');
      $('> ' + this.opts.item, this.e).each(function() {
        if (this.vertical) {
          $(this).height($(this).height());
        }
        else {
          $(this).width($(this).width());
        }
      });
    },
    reanimate: function() {
      if (!this.opts.auto) {
        this.locked = false;
        this.opts.auto = true;
        var self = this;
        this.timerMoving = setTimeout(function(){
          self._animate('next');
        }, this.opts.dispTimeout);
      }
    },
    start: function(){
      if (!this.opts.auto) {
        this.locked = false;
        this.opts.auto = true;
        this._animate('next');
      }
      return false;
    },
    stop: function(){
      clearTimeout(this.timerMoving);
      this.opts.auto = false;
      return false;
    },
    next: function(){
      this._animate('next');
      return false;
    },
    prev: function(){
      this._animate('prev');
      return false;
    },
    getCurrent: function(){
      return this._realpos(this.current);
    },
    moveTo: function(i){
      if (i > (this.nbItems / 2)) {
        i = (this.nbItems / 2) - 1;
      }
      this.dep = parseInt(i) - parseInt(this.current);
      if (this.dep != 0) {
        this._animate('next');
      }
      return false;
    }
  });
  $.fn.moodular.defaults = {
    item: 'li',
    controls: '',
    effects: '',
    easing: '',
    auto: true,
    continuous: true,
    speed: 2000,
    direction: 'left',
    scroll: 1,
    startOn: 0,
    dispTimeout: 1000,
    callbacks: [],
    random: false,
    api: false
  };
  $.fn.moodular.controls = {
    callback: {}
  };
  $.fn.moodular.effects = {
    init: {},
    before: {},
    after: {}
  };
});