/* --------------------------------------------------------------
 amazon_checkout.js 2018-11-16
 Gambio GmbH
 http://www.gambio.de
 Copyright (c) 2016 Gambio GmbH
 Released under the GNU General Public License (Version 2)
 [http://www.gnu.org/licenses/gpl-2.0.html]
 --------------------------------------------------------------
 */

/* globals OffAmazonPayments */

/**
 * Widget that performs all actions of the amazon paymend method
 * at the checkout process
 */
gambio.widgets.module('amazon_checkout', [], function (data) {

    'use strict';

// ########## VARIABLE INITIALIZATION ##########

    var $this = $(this),
        $body = $('body'),
        $countryNotAllowed = null,
        $button = null,
        $continue = null,
        defaults = {
            // The amazon seller id
            sellerId: null,
            // The order reference id
            orderReference: null,
            // The size for the generated boxes
            size: {width: '600px', height: '400px'},
            // The size for the generated red onlay boxes
            sizeReadOnly: {width: '400px', height: '185px'},
            // Error message shown if the country isn't allowed
            countryTxt: '',
            // Text that is shown inside the signout button
            buttonTxt: '',
            // Selector for the continue button
            continueBtn: '.btn-continue',
            // Class set to error messages
            errorClass: 'amzadvpay_countrynotallowed',
            // ID set to the signout button
            buttonAClass: 'btn btn-default btn-block amazonadvpay_signout',
            // Class set to the signout button
            buttonClass: 'col-xs-6 col-sm-6 col-md-4 col-md-offset-1 amazonadvpay_signoutbutton',
            // Append the signout button after this selector
            buttonAppendAfter: '.btn-back',
            // URL the POST sends the data to
            requestURL: 'request_port.php?module=AmazonAdvPay',
            // URL the page gets redirected to after an error on signout
            signoutErrorUrl: 'shopping_cart.php?error=apa_signout'
        },
        options = $.extend(true, {}, defaults, data),
        module = {};

// ########## HELPER FUNCTIONS ##########


    /**
     * Event handler that is performed on address selection
     * or clicking on the signout button. Both actions perform
     * almost the same steps except the dataset that is deliverd
     * to the server
     * @param {object} d Contains the jQuery event object or the order reference (depending on the emitting action).
     * @private
     */
    var _onAction = function (d) {

        var dataset = (d && d.data && d.data.action) ? d.data : {
            orderrefid: options.orderReference,
            action: 'addressSelect'
        };

        $.post(options.requestURL, dataset).done(function (result) {

            // Reload page
            if (result.reload === 'true') {
                window.location.reload();
            }

            // Redirect to an other page
            if (result.redirect_url && dataset.action === 'signOut') {
                window.location = result.redirect_url;
            }

            // Show / hide the "country not allowed" error message
            if (result.country_allowed === 'false') {
                $continue.hide();
                $this.after($countryNotAllowed);
            } else if (dataset.action !== 'signOut') {
                $continue.show();
                $this
                    .next('.' + options.errorClass)
                    .remove();
            }

        }).fail(function (result) {
            // If an error occurs on signout redirect page
            if (dataset.action === 'signOut') {
                window.location = options.signoutErrorUrl;
            }
        });
    };

// ########## INITIALIZATION ##########

    /**
     * Init function of the widget
     * @constructor
     */
    module.init = function (done) {

        if (!$body.hasClass('amazon-payment-initialized')) {
            $body.addClass('amazon-payment-initialized');

            // Generate markup and select elements
            $countryNotAllowed = $('<div class="' + options.errorClass + '">' + options.countryTxt + '</div>');
            $button = $('<div class="' + options.buttonClass + '"><a class="' + options.buttonAClass + '">'
                + options.buttonTxt + '</div></div>');
            $continue = $(options.continueBtn);

            // Enable signout button
            $button.on('click', {orderrefid: 'n/a', action: 'signOut'}, _onAction);
            $(options.buttonAppendAfter).after($button);

            // Start the amazon widgets
            try {

                // default configuration for all widgets
                var settings = {
                    sellerId: options.sellerId,
                    amazonOrderReferenceId: options.orderReference,
                    design: {
                        designMode: 'responsive'
                    },
                    onAddressSelect: _onAction
                };

                if (null !== document.querySelector('#addressBookWidgetDiv')) {
                    new OffAmazonPayments.Widgets.AddressBook(settings).bind('addressBookWidgetDiv');
                }
                if (null !== document.querySelector('#walletWidgetDiv')) {
                    new OffAmazonPayments.Widgets.Wallet(settings).bind('walletWidgetDiv');
                    document.querySelector('#walletWidgetDiv').style.height = '25em';
                }

                let roAddressWidget = document.querySelector('#readOnlyAddressBookWidgetDiv'),
                    roWalletWidget = document.querySelector('#readOnlyWalletWidgetDiv');
                if (null !== roAddressWidget && null !== roWalletWidget) {
                    roAddressWidget.style.height = '12em';
                    roWalletWidget.style.height = '12em';
                    roWalletWidget.style['margin-bottom'] = '3em';
                    $.extend(settings, {displayMode: 'Read'});
                    new OffAmazonPayments.Widgets.AddressBook(settings).bind('readOnlyAddressBookWidgetDiv');
                    new OffAmazonPayments.Widgets.Wallet(settings).bind('readOnlyWalletWidgetDiv');
                }

            } catch (ignore) {
            }
        }

        done();
    };

    // Return data to widget engine
    return module;
});