Ext.namespace('Zarafa.plugins.origrcv');

/**
 * @class Zarafa.plugins.origrcv.OrigRcvPlugin
 * @extends Zarafa.core.Plugin
 */
Zarafa.plugins.origrcv.OrigRcvPlugin = Ext.extend(Zarafa.core.Plugin, {
    /*
     * Called after constructor.
     * Registers insertion points.
     * @protected
     */
    initPlugin: function() {
        Zarafa.plugins.origrcv.OrigRcvPlugin.superclass.initPlugin.apply(this, arguments);

        // Insertion point which shows the original to header
        this.registerInsertionPoint('previewpanel.toolbar.detaillinks', this.showOriginalReceiver, this);
    },
    /**
     * Displays Original To: header information in the previewpanel  
     *
     * @return {Object} a box which on record update displays to header
     */
    showOriginalReceiver: function() {
        return {
            xtype: 'container',
            autoEl: 'div',
            style: 'margin-top: 6px;',
            cls: 'preview-header-recipientbox',
            plugins: ['zarafa.recordcomponentupdaterplugin'],
            scope: this,
            update: this.onMailDataOpen,
        };
    },

    /**
     * Function which displays information in the previewpanel.
     *
     * @param {Zarafa.core.data.IPMRecord} record record which is displayed
     * @param {Boolean} contentReset force the component to perform a full update of the data.
     */
    onMailDataOpen: function(record, resetContent) {
        var label = this.getEl();
        // Set label to empty value by default, to override previous S/MIME message text
        label.update(""); // empty div
        label.hide();

        if (record.opened) {
            var toRegex = /^To\s*:\s*(.*)$/igm; // parse "to" header
            var headers = record.get('transport_message_headers');
            var toMatches = toRegex.exec(headers);

            if (toMatches.length == 2 && toMatches[1] != "") {
                var addrListRegex = /\b[A-Z0-9._%+-]+@(?:[A-Z0-9-]+\.)+[A-Z]{2,6}\b/ig; // split email address list

                var emailAddresses = [];
                var emailAddress;
                while ((emailAddress = addrListRegex.exec(toMatches[1])) != null) {
                    if (emailAddresses.indexOf(emailAddress[0]) == -1) {
                        emailAddresses.push(emailAddress[0]);
                    }
                }

                // only display if receiver addresses differ
                if (emailAddresses.length == 1 && !(emailAddresses[0] == record.get('display_to') || emailAddresses[0] == record.get('received_by_email_address'))) {
                    label.update("Original To: " + emailAddresses[0]);
                    label.show();
                } else if (emailAddresses.length > 1) {
                    var addressList = "";
                    for (var i = 0; i < emailAddresses.length; i++) {
                        if (i != 0) addressList += ", ";
                        addressList += emailAddresses[i];
                    }
                    label.update("Original To: " + addressList);
                    label.show();
                }
            }
        }
    },
});

// PLUGIN ENTRY POINT
Zarafa.onReady(function() {
    container.registerPlugin(new Zarafa.core.PluginMetaData({
        name: 'origrcv',
        displayName: _('Original Receiver Plugin'),
        pluginConstructor: Zarafa.plugins.origrcv.OrigRcvPlugin
    }));
});