/* --------------------------------------------------------------
 emails_paginator.js 2018-06-07
 Gambio GmbH
 http://www.gambio.de
 Copyright (c) 2018 Gambio GmbH
 Released under the GNU General Public License (Version 2)
 [http://www.gnu.org/licenses/gpl-2.0.html]
 --------------------------------------------------------------
 */

/**
 * ## Emails Paginator Controller
 *
 * This controller will handle the main table paginator operations of the admin/emails page.
 *
 * @module Controllers/emails_paginator
 */
gx.controllers.module(
    'emails_paginator',

    [
        gx.source + '/libs/emails',
        gx.source + '/libs/button_dropdown',
        'loading_spinner',
        'modal'
    ],

    /** @lends module:Controllers/emails_paginator */

    function (data) {

        'use strict';

        // ------------------------------------------------------------------------
        // VARIABLE DEFINITION
        // ------------------------------------------------------------------------

        var
            /**
             * Module Reference
             *
             * @type {object}
             */
            $this = $(this),

            /**
             * Table Selector
             *
             * @type {object}
             */
            $table = $('#emails-table'),

            /**
             * Attachments Size Selector
             *
             * @type {object}
             */
            $attachmentsSize = $('#attachments-size'),

            /**
             * Default Module Options
             *
             * @type {object}
             */
            defaults = {},

            /**
             * Final Module Options
             *
             * @type {object}
             */
            options = $.extend(true, {}, defaults, data),

            /**
             * Module Object
             *
             * @type {object}
             */
            module = {};

        // ------------------------------------------------------------------------
        // EVENT HANDLERS
        // ------------------------------------------------------------------------

        /**
         * Refresh page data.
         *
         * @param {object} event Contains event information.
         */
        var _onRefreshData = function (event) {
            $table.DataTable().ajax.reload();
            jse.libs.emails.getAttachmentsSize($attachmentsSize);
        };

        /**
         * Change current page length.
         *
         * @param {object} event Contains the event data.
         */
        var _onTableLengthChange = function (event) {
            var length = $this.find('#display-records').val();
            $table.DataTable().page.len(length).draw();
        };

        /**
         * Open handle attachments modal window.
         *
         * @param {object} event Contains event information.
         */
        var _onHandleAttachments = function (event) {
            var $attachmentsModal = $('#attachments-modal');

            // Reset modal state.
            $attachmentsModal.find('#removal-date').val('').datepicker({
                maxDate: new Date()
            });
            $(document).find('.ui-datepicker').not('.gx-container').addClass('gx-container');

            // Display modal to the user.
            $attachmentsModal.dialog({
                title: jse.core.lang.translate('handle_attachments', 'emails'),
                width: 400,
                modal: true,
                dialogClass: 'gx-container',
                closeOnEscape: true
            });

            $('#close-modal').on('click', function () {
                $($attachmentsModal).dialog('close');
            });
        };

        /**
         * Open handle attachments modal window.
         *
         * @param {object} event Contains event information.
         */
        const _onHandleOldEmails = function (event) {
            const $deleteOldEmailsModal = $('#delete-old-emails-modal');

            // Reset modal state.
            $deleteOldEmailsModal.find('#email-removal-date').val('').datepicker({
                maxDate: new Date()
            });
            $(document).find('.ui-datepicker').not('.gx-container').addClass('gx-container');

            // Display modal to the user.
            $deleteOldEmailsModal.dialog({
                title: jse.core.lang.translate('handle_old_emails', 'emails'),
                width: 400,
                modal: true,
                dialogClass: 'gx-container',
                closeOnEscape: true
            });

            $('#close-old-email-modal').on('click', function () {
                $($deleteOldEmailsModal).dialog('close');
            });
        };

        /**
         * Execute the delete operation for the selected email records.
         *
         * @param {object} event Contains the event information.
         */
        var _onBulkDelete = function (event) {
            // Check if there are table rows selected.
            if ($table.find('tr td input:checked').length === 0 || $('#bulk-action').val() === '') {
                return; // No selected records, exit method.
            }

            // Get selected rows data - create a new email collection.
            var collection = jse.libs.emails.getSelectedEmails($table);

            // Display confirmation modal to the user.
            jse.libs.modal.message({
                title: jse.core.lang.translate('bulk_action', 'admin_labels'),
                content: jse.core.lang.translate('prompt_delete_collection', 'emails'),
                buttons: [
                    {
                        text: jse.core.lang.translate('no', 'lightbox_buttons'),
                        click: function () {
                            $(this).dialog('close');
                        }
                    },
                    {
                        text: jse.core.lang.translate('yes', 'lightbox_buttons'),
                        click: function () {
                            jse.libs.emails.deleteCollection(collection)
                                .done(function (response) {
                                    $table.DataTable().ajax.reload();
                                    jse.libs.emails.getAttachmentsSize($attachmentsSize);
                                })
                                .fail(function (response) {
                                    var title = jse.core.lang.translate('error', 'messages');

                                    jse.libs.modal.message({
                                        title: title,
                                        content: response.message
                                    });
                                });

                            $(this).dialog('close');
                            $table.find('input[type=checkbox]').prop('checked', false);
                        }
                    }
                ]
            });
        };

        /**
         * Execute the send operation for the selected email records.
         *
         * @param {object} event Contains the event information.
         */
        var _onBulkSend = function (event) {
            // Check if there are table rows selected.
            if ($table.find('tr td input:checked').length === 0 || $('#bulk-action').val() === '') {
                return; // No selected records, exit method.
            }

            // Get selected rows data - create a new email collection.
            var collection = jse.libs.emails.getSelectedEmails($table);

            // Display confirmation modal to the user.
            jse.libs.modal.message({
                title: jse.core.lang.translate('bulk_action', 'admin_labels'),
                content: jse.core.lang.translate('prompt_send_collection', 'emails'),
                buttons: [
                    {
                        text: jse.core.lang.translate('no', 'lightbox_buttons'),
                        click: function () {
                            $(this).dialog('close');
                        }
                    },
                    {
                        text: jse.core.lang.translate('yes', 'lightbox_buttons'),
                        click: function () {
                            jse.libs.emails.sendCollection(collection)
                                .done(function (response) {
                                    $table.DataTable().ajax.reload();
                                    jse.libs.emails.getAttachmentsSize($attachmentsSize);
                                })
                                .fail(function (response) {
                                    var title = jse.core.lang.translate('error', 'messages');

                                    jse.libs.modal.message({
                                        title: title,
                                        content: response.message
                                    });
                                });

                            $(this).dialog('close');
                            $table.find('input[type=checkbox]').prop('checked', false);
                        }
                    }
                ]
            });
        };

        // ------------------------------------------------------------------------
        // INITIALIZATION
        // ------------------------------------------------------------------------

        /**
         * Initialize method of the module, called by the engine.
         */
        module.init = function (done) {
            // Bind paginator event handlers.
            $this
                .on('click', '#refresh-table', _onRefreshData)
                .on('change', '#display-records', _onTableLengthChange);
            $('body')
                .on('click', '#handle-attachments', _onHandleAttachments);
            $('body')
                .on('click', '#handle-old-emails', _onHandleOldEmails);

            var $dropdown = $this.find('.bulk-action');
            jse.libs.button_dropdown.mapAction($dropdown, 'bulk_send_selected', 'emails', _onBulkSend);
            jse.libs.button_dropdown.mapAction($dropdown, 'bulk_delete_selected', 'emails', _onBulkDelete);

            // Get current attachments size.
            jse.libs.emails.getAttachmentsSize($attachmentsSize);

            done();
        };

        // Return module object to module engine.
        return module;
    });