var Backbone = require('backbone');
var Marionette = require('marionette');
var _ = require('underscore');
var CommandController = require('../../../Commands/CommandController');

module.exports = Marionette.ItemView.extend({
    template  : 'Shared/Toolbar/ButtonTemplate',
    className : 'btn btn-default btn-icon-only-xs',

    ui : {
        icon : 'i'
    },

    events : {
        'click' : 'onClick'
    },

    initialize : function() {
        this.storageKey = this.model.get('menuKey') + ':' + this.model.get('key');
    },

    onRender : function() {
        if (this.model.get('active')) {
            this.$el.addClass('active');
            this.invokeCallback();
        }

        if (!this.model.get('title')) {
            this.$el.addClass('btn-icon-only');
        }

        if (this.model.get('className')) {
            this.$el.addClass(this.model.get('className'));
        }

        var command = this.model.get('command');
        if (command) {
            var properties = _.extend({ name : command }, this.model.get('properties'));

            CommandController.bindToCommand({
                command : properties,
                element : this.$el
            });
        }
    },

    onClick : function() {
        if (this.$el.hasClass('disabled')) {
            return;
        }

        this.invokeCallback();
        this.invokeRoute();
        this.invokeCommand();
    },

    invokeCommand : function() {
        var command = this.model.get('command');
        if (command) {
            CommandController.Execute(command, this.model.get('properties'));
        }
    },

    invokeRoute : function() {
        var route = this.model.get('route');
        if (route) {
            Backbone.history.navigate(route, { trigger : true });
        }
    },

    invokeCallback : function() {
        if (!this.model.ownerContext) {
            throw 'ownerContext must be set.';
        }

        var callback = this.model.get('callback');
        if (callback) {
            callback.call(this.model.ownerContext, this);
        }
    }
});