window.ckeditor_configuration = {

    default: {
        language: 'en',
        entities_latin: false,
        forcePasteAsPlainText: true,
        height: '400px',
        allowedContent: true,
        format_tags: 'p;h2;h3',
        toolbar: [
            ['Bold', 'Italic'],
            ['Format'],
            ['JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock'],
            ['Subscript', 'Superscript'],
            ['NumberedList', 'BulletedList'],
            ['Link', 'Unlink', 'Anchor', 'Image', 'MediaEmbed' ],
            ['Source', 'Maximize', 'ShowBlocks']],
        extraPlugins: 'mediaembed'
    }

};

/* global CKEDITOR */
jQuery(function()
{
    var body = jQuery('body');

    CKEDITOR.on('instanceReady', function(e) {
      jQuery(e.editor.element.$).addClass("ckeditor-initialized");
    });

    var remove_array_value = function(arr, value) {
        var b = '';
        for (b in arr)
        {
            if (arr[b] === value)
            {
                arr.splice(b, 1);
                break;
            }
        }
    };

    var remove_toolbar_item = function(toolbar_config, removable_item) {
        for(var i = 0; i < toolbar_config.length; i++)
        {
            remove_array_value(toolbar_config[i], removable_item);
        }
    };

    body.on( 'richtextinit', 'textarea.richtext', function( event, extra_config )
    {
        var textarea = jQuery(this);

        var type = textarea.data('type');
        if (!type)
        {
            type = 'default';
        }

        if (typeof window.ckeditor_configuration[type] === 'undefined')
        {
            return;
        }

        var config = jQuery.extend(true, {}, window.ckeditor_configuration[type]);

        textarea.closest("form").on( 'beforevalidation', function()
        {
            for ( var instance in CKEDITOR.instances )
            {
                if (CKEDITOR.instances.hasOwnProperty(instance))
                {
                    CKEDITOR.instances[instance].updateElement();
                }
            }
        });

        config.width = '100%';
        config.height = textarea.outerHeight();
        config.filebrowserUploadMethod = 'form';

        if( !textarea.attr( 'id' ) )
        {
            textarea.attr( 'id', 'richtext_' + String((new Date()).getTime()).replace(/\D/gi,'') );
        }

        if (textarea.data('attachment-upload-url') || textarea.data('attachment-browse-url'))
        {
            if (textarea.data('attachment-browse-url'))
            {
                config.filebrowserBrowseUrl = textarea.data('attachment-browse-url');
            }

            if (textarea.data('attachment-upload-url'))
            {
                config.filebrowserUploadUrl = textarea.data('attachment-upload-url');
            }
        }
        else
        {
            remove_toolbar_item(config.toolbar, 'Image');
        }

        if (textarea.data('external-stylesheet'))
        {
            config.contentsCss = textarea.data('external-stylesheet');
        }

        if (extra_config)
        {
            jQuery.each(extra_config, function(index, value){
                config[index] = value;
            });
        }

        textarea.ckeditor(config);

        textarea.on('richtextsuspend', function()
        {
            if (textarea.data('richtext-suspended'))
            {
                return;
            }

            CKEDITOR.instances[ textarea.attr('id') ].destroy();
            textarea.hide();
            textarea.data('richtext-suspended', true);
        });

        textarea.on('richtextresume', function()
        {
            if (!textarea.data('richtext-suspended'))
            {
                return;
            }

            textarea.show();
            textarea.trigger('richtextinit');
            textarea.data('richtext-suspended', false);
        });

        textarea.on('focusprepare', function()
        {
            if (textarea.data('richtext-suspended'))
            {
                return;
            }

            CKEDITOR.instances[ textarea.attr('id') ].focus();
        });
    });

    // initialize richtext editor for any new richtext textarea after any content load
    body.on('contentloaded', function(e)
    {
        var block = jQuery(e.target);
        var textareas = block.is('textarea.richtext') ? block : block.find( 'textarea.richtext' );

        // remove textareas that need not be initialized automatically
        textareas = textareas.not('.template textarea, textarea.manual-init');

        textareas.trigger('richtextinit');

    });

    body.on('contentbeforeremove', function(e)
    {
        // remove ckeditor instances when removing fields

        var removable_item = jQuery(e.target);
        var textareas = removable_item.is('textarea.richtext') ? removable_item : removable_item.find( 'textarea.richtext' );

        textareas.each(function()
        {
            jQuery(this).trigger('richtextsuspend');
        });

    });


    // to avoid losing content ckeditor needs to be disabled and reenabled when used inside a sortable list
    body.on('sortablestart', function( event )
    {
        jQuery(event.target).find('textarea.richtext').each(function()
        {
            jQuery(this).trigger('richtextsuspend');
        });
    });

    body.on('sortablestop sortableupdate', function( event )
    {
        // restore ckeditor on either sortablestop or sortableupdate, whichever comes first
        // (sortable plugin actually calls update before stop)
        jQuery(event.target).find('textarea.richtext').each(function()
        {
            jQuery(this).trigger('richtextresume');
        });
    });

    // if id of the textarea gets changed, ckeditor needs to be reinitialized
    body.on('beforeattributechange', 'textarea.richtext', function(event, event_params)
    {
        if (event_params.attribute !== 'id')
        {
            return;
        }
        jQuery(this).trigger('richtextsuspend');
    });

    body.on('attributechanged', 'textarea.richtext', function(event, event_params)
    {
        if (event_params.attribute !== 'id')
        {
            return;
        }
        jQuery(this).trigger('richtextresume');
    });
});