/**
 * Plugin boilerplate
 */
module.exports = (function() {

  var AP = Array.prototype;

  return function(plugin) {

    plugin = $.extend(true, {
      name: 'plugin',
      defaults: {
        disabledExtensions: 'none'
      },
      methods: {},
      global: {},
    }, plugin);

    $[plugin.name] = $.extend({

      addExtension: function(extension) {
        plugin.global.extensions.push(extension);
      }
    }, plugin.global);

    function Plugin(element, options) {

      this.opts = $.extend({}, plugin.defaults, options);
      this.el = element;

      this._name = plugin.name;

      this._init();
    }

    Plugin._extended = {};

    Plugin.prototype._hasExtension = function(extension) {

      var self = this;

      return plugin.global.extensions.filter(function(ext) {
        return ext.name == extension && self.opts.disabledExtensions.indexOf(ext.name) < 0;
      }).length;
    };

    Plugin.prototype._extend = function(extensions) {

      var self = this;

      $.each(extensions, function(i, extension) {

        $.extend(self.opts, $.extend(true, extension.options, self.opts));

        $.each(extension.methods, function(method, fn) {

          if (self.opts.disabledExtensions.indexOf(extension.name) > -1) {
            return;
          }

          if (Plugin.prototype[method.split(':')[0]]) {
            Plugin._extended[method] = Plugin._extended[method] || [];
            Plugin._extended[method].push({ name: extension.name, fn: fn });
          } else {
            Plugin.prototype[method] = fn;
          }
        });

      });
    };

    Plugin.prototype._inject = function(method) {

      var args = [].slice.call(arguments, 1);

      if (typeof method == 'function') return method.call(this);

      var self = this;

      if (Plugin._extended[method]) {
        $.each(Plugin._extended[method], function(i, plugin) {
          plugin.fn.apply(self, args);
        });
      }
    };

    Plugin.prototype._init = $.noop;

    Plugin.prototype[plugin.name] = function(method) {
      if (!method) return this;
      try { return this[method].apply(this, AP.slice.call(arguments, 1)); }
      catch(e) {}
    };

    $.extend(Plugin.prototype, plugin.methods);

    $.fn[plugin.name] = function() {

      var args = AP.slice.call(arguments)
        , methodArray = typeof args[0] == 'string' && args[0].split(':')
        , method = methodArray[methodArray.length > 1 ? 1 : 0]
        , prefix = methodArray.length > 1 && methodArray[0]
        , opts = typeof args[0] == 'object' && args[0]
        , params = args.slice(1)
        , ret;

      if (prefix) {
        method = prefix + method.substr(0,1).toUpperCase() + method.substr(1,method.length-1);
      }

      this.each(function() {

        var instance = $.data(this, plugin.name);

        // Method
        if (instance) {
          return ret = instance[plugin.name].apply(instance, [method].concat(params));
        }

        // Init
        return $.data(this, plugin.name, new Plugin(this, opts));
      });

      return prefix ? ret : this;
    };
  };

}());