/*

* # Semantic - Dimmer
* http://github.com/semantic-org/semantic-ui/
*
*
* Copyright 2014 Contributor
* Released under the MIT license
* http://opensource.org/licenses/MIT
*
*/

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

$.fn.dimmer = function(parameters) {

var
  $allModules     = $(this),

  time            = new Date().getTime(),
  performance     = [],

  query           = arguments[0],
  methodInvoked   = (typeof query == 'string'),
  queryArguments  = [].slice.call(arguments, 1),

  returnedValue
;

$allModules
  .each(function() {
    var
      settings        = ( $.isPlainObject(parameters) )
        ? $.extend(true, {}, $.fn.dimmer.settings, parameters)
        : $.extend({}, $.fn.dimmer.settings),

      selector        = settings.selector,
      namespace       = settings.namespace,
      className       = settings.className,
      error           = settings.error,

      eventNamespace  = '.' + namespace,
      moduleNamespace = 'module-' + namespace,
      moduleSelector  = $allModules.selector || '',

      clickEvent      = ('ontouchstart' in document.documentElement)
        ? 'touchstart'
        : 'click',

      $module = $(this),
      $dimmer,
      $dimmable,

      element   = this,
      instance  = $module.data(moduleNamespace),
      module
    ;

    module = {

      preinitialize: function() {
        if( module.is.dimmer() ) {
          $dimmable = $module.parent();
          $dimmer   = $module;
        }
        else {
          $dimmable = $module;
          if( module.has.dimmer() ) {
            if(settings.dimmerName) {
              $dimmer = $dimmable.children(selector.dimmer).filter('.' + settings.dimmerName);
            }
            else {
              $dimmer = $dimmable.children(selector.dimmer);
            }
          }
          else {
            $dimmer = module.create();
          }
        }
      },

      initialize: function() {
        module.debug('Initializing dimmer', settings);
        if(settings.on == 'hover') {
          $dimmable
            .on('mouseenter' + eventNamespace, module.show)
            .on('mouseleave' + eventNamespace, module.hide)
          ;
        }
        else if(settings.on == 'click') {
          $dimmable
            .on(clickEvent + eventNamespace, module.toggle)
          ;
        }
        if( module.is.page() ) {
          module.debug('Setting as a page dimmer', $dimmable);
          module.set.pageDimmer();
        }

        if( module.is.closable() ) {
          module.verbose('Adding dimmer close event', $dimmer);
          $dimmer
            .on(clickEvent + eventNamespace, module.event.click)
          ;
        }
        module.set.dimmable();
        module.instantiate();
      },

      instantiate: function() {
        module.verbose('Storing instance of module', module);
        instance = module;
        $module
          .data(moduleNamespace, instance)
        ;
      },

      destroy: function() {
        module.verbose('Destroying previous module', $dimmer);
        $module
          .removeData(moduleNamespace)
        ;
        $dimmable
          .off(eventNamespace)
        ;
        $dimmer
          .off(eventNamespace)
        ;
      },

      event: {
        click: function(event) {
          module.verbose('Determining if event occured on dimmer', event);
          if( $dimmer.find(event.target).size() === 0 || $(event.target).is(selector.content) ) {
            module.hide();
            event.stopImmediatePropagation();
          }
        }
      },

      addContent: function(element) {
        var
          $content = $(element)
        ;
        module.debug('Add content to dimmer', $content);
        if($content.parent()[0] !== $dimmer[0]) {
          $content.detach().appendTo($dimmer);
        }
      },

      create: function() {
        var
          $element = $( settings.template.dimmer() )
        ;
        if(settings.variation) {
          module.debug('Creating dimmer with variation', settings.variation);
          $element.addClass(className.variation);
        }
        if(settings.dimmerName) {
          module.debug('Creating named dimmer', settings.dimmerName);
          $element.addClass(settings.dimmerName);
        }
        $element
          .appendTo($dimmable)
        ;
        return $element;
      },

      show: function(callback) {
        callback = $.isFunction(callback)
          ? callback
          : function(){}
        ;
        module.debug('Showing dimmer', $dimmer, settings);
        if( (!module.is.dimmed() || module.is.animating()) && module.is.enabled() ) {
          module.animate.show(callback);
          $.proxy(settings.onShow, element)();
          $.proxy(settings.onChange, element)();
        }
        else {
          module.debug('Dimmer is already shown or disabled');
        }
      },

      hide: function(callback) {
        callback = $.isFunction(callback)
          ? callback
          : function(){}
        ;
        if( module.is.dimmed() || module.is.animating() ) {
          module.debug('Hiding dimmer', $dimmer);
          module.animate.hide(callback);
          $.proxy(settings.onHide, element)();
          $.proxy(settings.onChange, element)();
        }
        else {
          module.debug('Dimmer is not visible');
        }
      },

      toggle: function() {
        module.verbose('Toggling dimmer visibility', $dimmer);
        if( !module.is.dimmed() ) {
          module.show();
        }
        else {
          module.hide();
        }
      },

      animate: {
        show: function(callback) {
          callback = $.isFunction(callback)
            ? callback
            : function(){}
          ;
          if(settings.useCSS && $.fn.transition !== undefined && $dimmer.transition('is supported')) {
            $dimmer
              .transition({
                animation : settings.transition + ' in',
                queue       : false,
                duration  : module.get.duration(),
                onStart   : function() {
                  module.set.dimmed();
                },
                onComplete : function() {
                  module.set.active();
                  callback();
                }
              })
            ;
          }
          else {
            module.verbose('Showing dimmer animation with javascript');
            module.set.dimmed();
            $dimmer
              .stop()
              .css({
                opacity : 0,
                width   : '100%',
                height  : '100%'
              })
              .fadeTo(module.get.duration(), 1, function() {
                $dimmer.removeAttr('style');
                module.set.active();
                callback();
              })
            ;
          }
        },
        hide: function(callback) {
          callback = $.isFunction(callback)
            ? callback
            : function(){}
          ;
          if(settings.useCSS && $.fn.transition !== undefined && $dimmer.transition('is supported')) {
            module.verbose('Hiding dimmer with css');
            $dimmer
              .transition({
                animation  : settings.transition + ' out',
                queue      : false,
                duration   : module.get.duration(),
                onStart    : function() {
                  module.remove.dimmed();
                },
                onComplete : function() {
                  module.remove.active();
                  callback();
                }
              })
            ;
          }
          else {
            module.verbose('Hiding dimmer with javascript');
            module.remove.dimmed();
            $dimmer
              .stop()
              .fadeOut(module.get.duration(), function() {
                module.remove.active();
                $dimmer.removeAttr('style');
                callback();
              })
            ;
          }
        }
      },

      get: {
        dimmer: function() {
          return $dimmer;
        },
        duration: function() {
          if(typeof settings.duration == 'object') {
            if( module.is.active() ) {
              return settings.duration.hide;
            }
            else {
              return settings.duration.show;
            }
          }
          return settings.duration;
        }
      },

      has: {
        dimmer: function() {
          if(settings.dimmerName) {
            return ($module.children(selector.dimmer).filter('.' + settings.dimmerName).size() > 0);
          }
          else {
            return ( $module.children(selector.dimmer).size() > 0 );
          }
        }
      },

      is: {
        active: function() {
          return $dimmer.hasClass(className.active);
        },
        animating: function() {
          return ( $dimmer.is(':animated') || $dimmer.hasClass(className.animating) );
        },
        closable: function() {
          if(settings.closable == 'auto') {
            if(settings.on == 'hover') {
              return false;
            }
            return true;
          }
          return settings.closable;
        },
        dimmer: function() {
          return $module.is(selector.dimmer);
        },
        dimmable: function() {
          return $module.is(selector.dimmable);
        },
        dimmed: function() {
          return $dimmable.hasClass(className.dimmed);
        },
        disabled: function() {
          return $dimmable.hasClass(className.disabled);
        },
        enabled: function() {
          return !module.is.disabled();
        },
        page: function () {
          return $dimmable.is('body');
        },
        pageDimmer: function() {
          return $dimmer.hasClass(className.pageDimmer);
        }
      },

      can: {
        show: function() {
          return !$dimmer.hasClass(className.disabled);
        }
      },

      set: {
        active: function() {
          $dimmer.addClass(className.active);
        },
        dimmable: function() {
          $dimmable.addClass(className.dimmable);
        },
        dimmed: function() {
          $dimmable.addClass(className.dimmed);
        },
        pageDimmer: function() {
          $dimmer.addClass(className.pageDimmer);
        },
        disabled: function() {
          $dimmer.addClass(className.disabled);
        }
      },

      remove: {
        active: function() {
          $dimmer
            .removeClass(className.active)
          ;
        },
        dimmed: function() {
          $dimmable.removeClass(className.dimmed);
        },
        disabled: function() {
          $dimmer.removeClass(className.disabled);
        }
      },

      setting: function(name, value) {
        module.debug('Changing setting', name, value);
        if( $.isPlainObject(name) ) {
          $.extend(true, settings, name);
        }
        else if(value !== undefined) {
          settings[name] = value;
        }
        else {
          return settings[name];
        }
      },
      internal: function(name, value) {
        if( $.isPlainObject(name) ) {
          $.extend(true, module, name);
        }
        else if(value !== undefined) {
          module[name] = value;
        }
        else {
          return module[name];
        }
      },
      debug: function() {
        if(settings.debug) {
          if(settings.performance) {
            module.performance.log(arguments);
          }
          else {
            module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
            module.debug.apply(console, arguments);
          }
        }
      },
      verbose: function() {
        if(settings.verbose && settings.debug) {
          if(settings.performance) {
            module.performance.log(arguments);
          }
          else {
            module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
            module.verbose.apply(console, arguments);
          }
        }
      },
      error: function() {
        module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
        module.error.apply(console, arguments);
      },
      performance: {
        log: function(message) {
          var
            currentTime,
            executionTime,
            previousTime
          ;
          if(settings.performance) {
            currentTime   = new Date().getTime();
            previousTime  = time || currentTime;
            executionTime = currentTime - previousTime;
            time          = currentTime;
            performance.push({
              'Name'           : message[0],
              'Arguments'      : [].slice.call(message, 1) || '',
              'Element'        : element,
              'Execution Time' : executionTime
            });
          }
          clearTimeout(module.performance.timer);
          module.performance.timer = setTimeout(module.performance.display, 100);
        },
        display: function() {
          var
            title = settings.name + ':',
            totalTime = 0
          ;
          time = false;
          clearTimeout(module.performance.timer);
          $.each(performance, function(index, data) {
            totalTime += data['Execution Time'];
          });
          title += ' ' + totalTime + 'ms';
          if(moduleSelector) {
            title += ' \'' + moduleSelector + '\'';
          }
          if($allModules.size() > 1) {
            title += ' ' + '(' + $allModules.size() + ')';
          }
          if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
            console.groupCollapsed(title);
            if(console.table) {
              console.table(performance);
            }
            else {
              $.each(performance, function(index, data) {
                console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
              });
            }
            console.groupEnd();
          }
          performance = [];
        }
      },
      invoke: function(query, passedArguments, context) {
        var
          object = instance,
          maxDepth,
          found,
          response
        ;
        passedArguments = passedArguments || queryArguments;
        context         = element         || context;
        if(typeof query == 'string' && object !== undefined) {
          query    = query.split(/[\. ]/);
          maxDepth = query.length - 1;
          $.each(query, function(depth, value) {
            var camelCaseValue = (depth != maxDepth)
              ? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
              : query
            ;
            if( $.isPlainObject( object[camelCaseValue] ) && (depth != maxDepth) ) {
              object = object[camelCaseValue];
            }
            else if( object[camelCaseValue] !== undefined ) {
              found = object[camelCaseValue];
              return false;
            }
            else if( $.isPlainObject( object[value] ) && (depth != maxDepth) ) {
              object = object[value];
            }
            else if( object[value] !== undefined ) {
              found = object[value];
              return false;
            }
            else {
              module.error(error.method, query);
              return false;
            }
          });
        }
        if ( $.isFunction( found ) ) {
          response = found.apply(context, passedArguments);
        }
        else if(found !== undefined) {
          response = found;
        }
        if($.isArray(returnedValue)) {
          returnedValue.push(response);
        }
        else if(returnedValue !== undefined) {
          returnedValue = [returnedValue, response];
        }
        else if(response !== undefined) {
          returnedValue = response;
        }
        return found;
      }
    };

    module.preinitialize();

    if(methodInvoked) {
      if(instance === undefined) {
        module.initialize();
      }
      module.invoke(query);
    }
    else {
      if(instance !== undefined) {
        module.destroy();
      }
      module.initialize();
    }
  })
;

return (returnedValue !== undefined)
  ? returnedValue
  : this
;

};

$.fn.dimmer.settings = {

name        : 'Dimmer',
namespace   : 'dimmer',

debug       : false,
verbose     : true,
performance : true,

dimmerName  : false,
variation   : false,
closable    : 'auto',
transition  : 'fade',
useCSS      : true,
on          : false,

duration    : {
  show : 500,
  hide : 500
},

onChange    : function(){},
onShow      : function(){},
onHide      : function(){},

error   : {
  method   : 'The method you called is not defined.'
},

selector: {
  dimmable : '.dimmable',
  dimmer   : '.ui.dimmer',
  content  : '.ui.dimmer > .content, .ui.dimmer > .content > .center'
},

template: {
  dimmer: function() {
   return $('<div />').attr('class', 'ui dimmer');
  }
},

className : {
  active     : 'active',
  animating  : 'animating',
  dimmable   : 'dimmable',
  dimmed     : 'dimmed',
  disabled   : 'disabled',
  hide       : 'hide',
  pageDimmer : 'page',
  show       : 'show'
}

};

})( jQuery, window , document );