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✏️ Editing: get_config_for_js.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This class contains a list of webservice functions related to the PayPal payment gateway.
 *
 * @package    paygw_paypal
 * @copyright  2020 Shamim Rezaie <shamim@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

declare(strict_types=1);

namespace paygw_paypal\external;

use core_payment\helper;
use core_external\external_api;
use core_external\external_function_parameters;
use core_external\external_value;
use core_external\external_single_structure;

class get_config_for_js extends external_api {

/**
     * Returns description of method parameters.
     *
     * @return external_function_parameters
     */
    public static function execute_parameters(): external_function_parameters {
        return new external_function_parameters([
            'component' => new external_value(PARAM_COMPONENT, 'Component'),
            'paymentarea' => new external_value(PARAM_AREA, 'Payment area in the component'),
            'itemid' => new external_value(PARAM_INT, 'An identifier for payment area in the component'),
        ]);
    }

/**
     * Returns the config values required by the PayPal JavaScript SDK.
     *
     * @param string $component
     * @param string $paymentarea
     * @param int $itemid
     * @return string[]
     */
    public static function execute(string $component, string $paymentarea, int $itemid): array {
        self::validate_parameters(self::execute_parameters(), [
            'component' => $component,
            'paymentarea' => $paymentarea,
            'itemid' => $itemid,
        ]);

$config = helper::get_gateway_configuration($component, $paymentarea, $itemid, 'paypal');
        $payable = helper::get_payable($component, $paymentarea, $itemid);
        $surcharge = helper::get_gateway_surcharge('paypal');

return [
            'clientid' => $config['clientid'],
            'brandname' => $config['brandname'],
            'cost' => helper::get_rounded_cost($payable->get_amount(), $payable->get_currency(), $surcharge),
            'currency' => $payable->get_currency(),
        ];
    }

/**
     * Returns description of method result value.
     *
     * @return external_single_structure
     */
    public static function execute_returns(): external_single_structure {
        return new external_single_structure([
            'clientid' => new external_value(PARAM_TEXT, 'PayPal client ID'),
            'brandname' => new external_value(PARAM_TEXT, 'Brand name'),
            'cost' => new external_value(PARAM_FLOAT, 'Cost with gateway surcharge'),
            'currency' => new external_value(PARAM_TEXT, 'Currency'),
        ]);
    }
}

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