<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

// NB, all PayPal supported "HTML Variables" will be passed on to the button, even if not mentioned here

function wikiplugin_paypal_info()
{

    global $prefs;

    return [
        'name' => tra('PayPal Button'),
        'documentation' => 'Payment',
        'description' => tra('Embed a PayPal button'),
        'introduced' => 11,
        'prefs' => ['wikiplugin_paypal'],       // not dependent on 'payment_feature', would be annoying if you just want one donate button for instance
        'iconname' => 'paypal',
        'format' => 'html',
        'extraparams' => true,
        'validate' => 'all',
        'params' => [
            'cmd' => [
                'required' => false,
                'name' => tra('Type'),
                'description' => tra('Type of PayPal button'),
                'since' => '11.0',
                'filter' => 'word',
                'options' => [
                    ['text' => '', 'value' => ''],
                    ['text' => tra('Shopping cart'), 'value' => '_cart'],
                    ['text' => tra('Buy Now'), 'value' => '_xclick'],
                    ['text' => tra('Donations'), 'value' => 'donations'],
//                  array('text' => tra('Gift vouchers'), 'value' => 'gift_certs'), TODO?
//                  array('text' => tra('Subscriptions'), 'value' => 'subscriptions'),
//                  array('text' => tra('Automatic Billing'), 'value' => 'auto_billing'),
//                  array('text' => tra('Instalment Plan'), 'value' => 'payment_plan'),
                ],
                'default' => '_cart',
            ],
            'cart_action' => [
                'required' => false,
                'name' => tra('Cart Action'),
                'description' => tra('Action if Shopping Cart selected for type'),
                'since' => '11.0',
                'filter' => 'word',
                'options' => [
                    ['text' => '', 'value' => ''],
                    ['text' => tra('Add to Cart'), 'value' => 'add'],
                    ['text' => tra('View Cart'), 'value' => 'display'],
                    //array('text' => tra('Cart Upload'), 'value' => 'upload'), // N/A
                ],
                'default' => 'add',
            ],
            'item_name' => [
                'required' => false,
                'name' => tra('Item Name'),
                'description' => tra('Item name or description. Required for Shopping cart'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
            ],
            'amount' => [
                'required' => false,
                'name' => tra('Price'),
                'description' => tra('Item price'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
            ],
            'paypal_button' => [
                'required' => false,
                'name' => tra('PayPal Button'),
                'description' => tra('Button appearance'),
                'since' => '11.0',
                'filter' => 'text',
                'options' => [
                    ['text' => tra('Normal'), 'value' => ''],
                    ['text' => tra('Smaller'), 'value' => 'small_button'],
                    ['text' => tra('Custom'), 'value' => 'custom'],
                ],
                'default' => '',
            ],
            'custom_image_url' => [
                'required' => false,
                'name' => tra('Custom Button'),
                'description' => tra('Custom button image URL'),
                'since' => '11.0',
                'filter' => 'url',
                'default' => '',
            ],
            'item_number' => [
                'required' => false,
                'name' => tra('Product ID'),
                'description' => tra('Optional item identifier, often a tracker itemId'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
            ],
            'quantity' => [
                'required' => false,
                'name' => tra('Quantity'),
                'description' => tra('Number of items, empty or 0 to have an input the user can fill in'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
            ],
            'shipping' => [
                'required' => false,
                'name' => tra('Shipping Cost'),
                'description' => tra('The cost of shipping this item'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'shipping2' => [
                'required' => false,
                'name' => tra('Additional Shipping Cost'),
                'description' => tra('The cost of shipping each additional unit of this item'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'weight' => [
                'required' => false,
                'name' => tra('Weight'),
                'description' => tra('Weight of item'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'weight_unit' => [
                'required' => false,
                'name' => tra('Weight Unit'),
                'description' => tra('The unit of measure if weight is specified'),
                'since' => '11.0',
                'filter' => 'word',
                'options' => [
                    ['text' => '', 'value' => ''],
                    ['text' => tra('Kilos'), 'value' => 'kgs'],
                    ['text' => tra('Pounds'), 'value' => 'lbs'],
                ],
                'default' => 'kgs',
                'advanced' => true,
            ],
            'business' => [
                'required' => false,
                'name' => tra('Business ID'),
                'description' => tra('PayPal business name/ID') . ' ' . tra('(Uses value in admin/payment if not set here)'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => $prefs['payment_paypal_business'],
                'advanced' => ! empty($prefs['payment_paypal_business']),   // if set in prefs shouldn't need to change it here
            ],
            'minicart' => [
                'required' => false,
                'name' => tra('Use MiniCart'),
                'description' => tra('See https://github.com/jeffharrell/MiniCart'),
                'since' => '11.0',
                'filter' => 'alpha',
                'options' => [
                    ['text' => '', 'value' => ''],
                    ['text' => tra('Yes'), 'value' => 'y'],
                    ['text' => tra('No'), 'value' => 'n'],
                ],
                'default' => 'y',
                'advanced' => true,
            ],
            'no_shipping' => [
                'required' => false,
                'name' => tra('Shipping Address Prompt'),
                'description' => tra('Indicate whether to prompt for and require an address'),
                'since' => '11.0',
                'filter' => 'digits',
                'options' => [
                    ['text' => '', 'value' => ''],
                    ['text' => tra('Prompt for address'), 'value' => 0],
                    ['text' => tra('Do not prompt for address'), 'value' => 1],
                    ['text' => tra('Prompt for and require address'), 'value' => 2],
                ],
                'default' => 2,
                'advanced' => true,
            ],
            'return' => [
                'required' => false,
                'name' => tra('Completed payment return URL'),
                'description' => tr('Empty for current page, %0n%1 to disable', '<code>', '</code>'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'shopping_url' => [
                'required' => false,
                'name' => tra('Continue Shopping URL'),
                'description' => tr('Empty for current page, %0n%1 to disable', '<code>', '</code>'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'cancel_return' => [
                'required' => false,
                'name' => tra('Cancel payment URL'),
                'description' => tr('Empty for current page, %0n%1 to disable', '<code>', '</code>'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => '',
                'advanced' => true,
            ],
            'title' => [
                'required' => false,
                'name' => tra('Form title'),
                'description' => tra('Tooltip for the form and alt attribute for the image'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => tra('PayPal — The safer, easier way to pay online.'),
                'advanced' => true,
            ],
            'stringButton' => [
                'required' => false,
                'name' => tra('Button text'),
                'description' => tra('The checkout button text'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => 'Checkout',
                'advanced' => true,
            ],
            'stringSubtotal' => [
                'required' => false,
                'name' => tra('Subtotal text'),
                'description' => tra('The subtotal text'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => 'Subtotal: ',
                'advanced' => true,
            ],
            'stringDiscount' => [
                'required' => false,
                'name' => tra('Discount text'),
                'description' => tra('The discount text'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => 'Discount: ',
                'advanced' => true,
            ],
            'stringShipping' => [
                'required' => false,
                'name' => tra('Shipping text'),
                'description' => tra('The shipping text'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => 'does not include shipping &amp; tax',
                'advanced' => true,
            ],
            'stringProcessing' => [
                'required' => false,
                'name' => tra('Processing text'),
                'description' => tra('The processing text'),
                'since' => '11.0',
                'filter' => 'text',
                'default' => 'Processing...',
                'advanced' => true,
            ],
        ],
    ];
}

function wikiplugin_paypal($data, $params)
{
    global $prefs, $language, $base_uri, $base_host;
    static $id = 0;

    $unique = 'wppaypal-' . ++$id;
    $smarty = TikiLib::lib('smarty');

    // process default
    $plugininfo = wikiplugin_paypal_info();
    foreach ($plugininfo['params'] as $key => $p) {
        $default[$key] = $p['default'];
    }
    $params = array_merge($default, $params);

    // check required params
    if (empty($params['business'])) {
        $access = TikiLib::lib('access');
        $access->check_feature('payment_paypal_business');
    }

    if ($params['cmd'] === '_cart') {
        if (empty($params['item_name'])) {
            return '<span class="alert-warning">' . tra('PayPal button:') . ' ' . tra('Item name (item_name) required') . '</span>';
        }
        if (empty($params['amount'])) {
            return '<span class="alert-warning">' . tra('PayPal button:') . ' ' . tra('Price (amount) required') . '</span>';
        }

        $params[$params['cart_action']] = 1;
        unset($params['cart_action']);
    }

    // process others
    if ($prefs['payment_feature'] === 'y' && ! empty($prefs['payment_currency'])) {
        $params['currency_code'] = $prefs['payment_currency'];
    }

    if (empty($params['weight'])) {
        unset($params['weight_unit']);
    }

    // logic handled in the tpl
    $smarty->assign('wppaypal_quantity', $params['quantity']);
    unset($params['quantity']);
    $smarty->assign('wppaypal_title', $params['title']);
    unset($params['title']);

    global $paypallib;
    include_once('lib/payment/paypallib.php');
    $locale = $paypallib->localeMap($language);     // 'lc' locale param TODO maybe

    // button image
    if (! empty($params['custom_image_url']) && $params['paypal_button'] === 'custom') {
        $button_url = $params['custom_image_url'];
    } else {
        switch ($params['cmd']) {
            case '_cart':
                if (isset($params['add'])) {
                    $button_type = 'cart';
                } elseif (isset($params['display'])) {
                    $button_type = 'viewcart';
                }
                break;
            case '_xclick':
                $button_type = 'buynow';
                break;
            case 'donations':
                $button_type = 'donate';
                break;
            default:
                $button_type = 'paynow';
        }
        $size = $params['paypal_button'] === 'small_button' ? 'SM' : 'LG';
        $button_url = "https://www.paypalobjects.com/{$locale}/i/btn/btn_{$button_type}_{$size}.gif";
    }
    $pixel_url = "https://www.paypalobjects.com/{$locale}/i/scr/pixel.gif";

    $smarty->assign('wppaypal_button', $button_url);
    $smarty->assign('wppaypal_pixel', $pixel_url);
    unset($params['custom_image_url']);
    unset($params['paypal_button']);

    // return params
    if (! empty($_SERVER['REQUEST_URI'])) {
        $returnUrl = $base_host . $_SERVER['REQUEST_URI'];
    } else {
        $returnUrl = $base_uri;
    }
    if (
        strpos($returnUrl, 'tiki-ajax_services.php') !== false ||
            (isset($_REQUEST['controller']) && $_REQUEST['controller'] === 'search_customsearch')
    ) {
        $csearchEvent = 'pageSearchReady';
        if (! empty($_SERVER['HTTP_REFERER'])) {
            $returnUrl = $_SERVER['HTTP_REFERER'];
        }
        $csearchInit = 'paypal = {}; $("#PPMiniCart").fadeOut().remove();';
    } else {
        $csearchEvent = 'ready';
        $csearchInit = '';
    }
    foreach (['return', 'shopping_url', 'cancel_return'] as $ret) {
        if (empty($params[$ret])) {
            $params[$ret] = $returnUrl;
        } elseif ($params[$ret] === 'n') {
            unset($params[$ret]);
        }
    }

    // just add javascript?
    $jsfile = 'vendor_bundled/vendor/jquery/minicart/dist/minicart' . ($prefs['tiki_minify_javascript'] === 'y' ? '.min' : '') . '.js';
    if ($params['minicart'] === 'y' && file_exists($jsfile)) {
        // it appears currently if you set any of these all must be set
        $miniParams = ['strings' => []];
        $miniParams['strings']['button']     = tra($params['stringButton']);
        $miniParams['strings']['subtotal']   = tra($params['stringSubtotal']);
        $miniParams['strings']['discount']   = tra($params['stringDiscount']);
        $miniParams['strings']['shipping']   = tra($params['stringShipping']);
        $miniParams['strings']['processing'] = tra($params['stringProcessing']);
        // this seems to be the only secure URL for these assets, minicart.com uses github's SSL certificate
        $miniParams['assetURL'] = 'https://github.com/jeffharrell/minicart/raw/3.0.6/';
        $miniParamStr = json_encode($miniParams);

        TikiLib::lib('header')->add_js(
            '
$(document).on("' . $csearchEvent . '", function () {
    ' . $csearchInit . ' $.getScript("' . $jsfile . '", function() {
            paypal.minicart.render(' . $miniParamStr . ');
        });
});'
        )->add_css('#PPMiniCart {z-index: 1040;}'); // make sure it clears the fixed page-header
    }
    unset($params['minicart']);


    //$params['item_name'] = htmlentities($params['item_name']);    // FIXME encoding problems!

    // all remaining non-empty params get turned into hidden form inputs
    $params = array_filter($params);
    $smarty->assign_by_ref('wppaypal_hiddens', $params);

    return $smarty->fetch('wiki-plugins/wikiplugin_paypal.tpl');
}