How to do e-commerce with JReviews and Stripe https://www.jreviews.com/blog/ecommerce-with-jreviews-and-stripe

developer_controller_macros.php

<?php
defined('MVC_FRAMEWORK') or die;

require dirname(dirname(__FILE__)).DS.'filters/stripe_config.php';

DeveloperController::macro('stripe_checkout', function() use ($stripe_config) 
{
    $config = $stripe_config;

    $client = new \GuzzleHttp\Client();

    if ( !($listingId = $this->params['id']) )
    {
        return $this->reponse->json()->not_found();
    }

    S2App::import('Component','listings_repository','jreviews');

    $listingRepo = (new ListingsRepositoryComponent())->startup($this);

    $listing = $listingRepo->whereListingId($listingId)->one();

    $price = S2Array::get($listing,'Field.pairs.'.$config['price_field'].'.value.0',null);

    if ( !$price ) 
    {
        return $this->response->json()->not_found();
    }

    $image = S2Array::get($listing,'MainMedia.media_info.image.url');

    $data = [
        'payment_method_types' => $config['payment_method_types'],
        'line_items' => [
            [
                'name' => $listing['Listing']['title'],
                'amount' => $price * 100, // Stripe works in cents
                'currency' => $config['currency'],
                'quantity' => 1,
                'images' => $image ? [$image] : [],
            ]
        ],
        'payment_intent_data' => [
            'description' => $config['statement_descriptor'], // Statement Descriptor
            'metadata' => [
               'listing_id' => $listing['Listing']['listing_id'],
               'title' => $listing['Listing']['title'],
               'user_id' => $this->auth->id,
               'name' => $this->auth->name
            ]
        ],
        // ,'customer' => '' // This needs to be a Stripe customer object
        'client_reference_id' => $this->auth->id,
        'success_url' => $config['success_url'],
        'cancel_url' => $config['cancel_url'] ?? cmsFramework::makeAbsUrl(cmsFramework::getCurrentUrl()),
    ];

    $response = $client->post('https://api.stripe.com/v1/checkout/sessions', [
        'auth' => [$config['stripe_sk'],''],
        'form_params'   => $data,
        'http_errors'   => false,
    ]);

    if ( $response->getStatusCode() == 200 )
    {
        $checkoutSession = json_decode((string) $response->getBody(),true);

        return $this->response->json()->array(['success'=>true,'session_id'=>$checkoutSession['id']]);
    }
});

filter_functions.php

<?php
defined('MVC_FRAMEWORK') or die;

require 'stripe_checkout.php';

stripe_checkout.php

<?php
defined('MVC_FRAMEWORK') or die;

require_once 'stripe_config.php';

$jreviewsCheckout = new JReviewsCheckout($stripe_config);

Clickfwd\Hook\Filter::add('post_get_listing_detailpage_query', [$jreviewsCheckout, 'store_add_buy_button'], 10); 

Clickfwd\Hook\Filter::add('before_theme_render_viewvars_com_content_com_content_view', [$jreviewsCheckout, 'stripe_bootstrap'], 10); 

class JReviewsCheckout {

    protected $config;

    public function __construct($config)
    {
        $this->config = $config;
    }

    public function store_add_buy_button($listing, $params) 
    {
        // Only process if the listing has a price set
        if( !S2Array::get($listing,'Field.pairs.'.$this->config['price_field'].'.value.0',null) )
        {
            return $listing;
        }

    	$auth = S2Object::make('auth');

        $field = ['jr_store_buy'=>[
                'field_id' => 99999,
                'group_id' => 'store',
                'name' => 'jr_store_buy',
                'type' => 'banner',
                'title' => '',
                'value' => ['banner'],
                'text' => ['banner'],
                // We pass the listing ID as a data attribute so it can be sent to the server
                // where we read the price and generate the Stripe checkout session ID
                'description' => sprintf('%s', $this->config['buy_button_css'], $listing['Listing']['listing_id'], $this->config['buy_button_text']),
                'image' => [],
                'properties' => [
                        'show_title' => 0,
                        'location' => 'content',
                        'contentview' => 1,
                        'listview' => 0,
                        'listsort' => 0,
                        'search' => 0,
                        'access' => $auth->getAllAccessGroupId(),
                        'access_view' => $auth->getAllAccessGroupId(),
                        'output_format' => '{fieldtext}',
                    ],
            ]
        ];

        $group = ['store'=>[
            'Group'=>[
                'group_id'=> 'store',
                'title'=> 'Store',
                'name'=> 'store',
                'show_title'=>0 
            ],
            'Fields'=>$field
        ]];

        if ( !empty($listing['Field']['groups']) )
        {
            $listing['Field']['groups'] = array_merge($group,$listing['Field']['groups']);
        }

        if ( !empty($listing['Field']['pairs']) )
        {
            $listing['Field']['pairs'] = array_merge($field,$listing['Field']['pairs']);
        }

        return $listing;
    }

    public function stripe_bootstrap($viewVars, $params)
    {   
        // Only process if the listing has a price set
        if( !S2Array::get($viewVars,'listing.Field.pairs.'.$this->config['price_field'].'.value.0',null) )
        {
            return $viewVars;
        }

        cmsFramework::addScript('https://js.stripe.com/v3/', 'stripe-api');

        $asset_manager = S2Object::make('asset_manager');

        // The script below makes a request to DeveloperController::stripe_checkout, which is a custom
        // method that we will add using a controller macro. We send the listing ID with this request.
        $script = "
            var stripe = Stripe('".$this->config['stripe_pk']."');
            jreviews.stripeStore = {
                bootstrap: function() {
                    jQuery('body').on('click','.jr-stripe-buy',function(e) {
                        e.preventDefault();
                        jreviews.dispatch({
                            method:'post',
                            type:'json',
                            controller:'developer',
                            action:'stripe_checkout',
                            data:{ id: jQuery(this).data('id') }
                        }).then( res => {
                            if ( res && res.success ) {
                                stripe.redirectToCheckout({ sessionId: res.session_id }).then(handleResult);
                            }
                        })
                    });
                    var handleResult = function(result) {
                      if (result.error) {
                        console.log(result.error);
                      }
                    };
                }
            };
            if ( typeof head == 'function' ) {
                head.ready(function() {
                    jreviews.addOnload('stripe-bootstrap',jreviews.stripeStore.bootstrap);
                });
            } else {
                jreviews.addOnload('stripe-bootstrap',jreviews.stripeStore.bootstrap);
            }
        ";

        $asset_manager->addScript($script,'jreviews-stripe-checkout','addon'); 

        return $viewVars;
    }    
}

stripe_config.php

<?php
defined('MVC_FRAMEWORK') or die;

$stripe_config = [
    // Name of custom field you want to use for price information
    'price_field'           => 'jr_productprice',
    // Get the private and secret keys from your Stripe dashboard and add them below.
    'stripe_pk'             => 'pk_live_........................',
    'stripe_sk'             => 'sk_live_........................',
    // This appears in the client's credit card statement for the transaction
    'statement_descriptor'  => 'Statement Descriptor',
    'currency'              => 'usd',
    // Include 'ideal' in the array below if you enable iDEAL payments in the Stripe dashboard, 
    // and set the currency to EUR which is required for iDEAL payments
    'payment_method_types'  => ['card'],
    // Set 'billing_address_collection' to 'required' to always collect customer billing info
    'billing_address_collection' => 'auto',
    // Can use stripe template var {CHECKOUT_SESSION_ID}
    // Create a success page on your site and update the URL below
    'success_url'           => 'https://your-domain/success-page',
    // Create a cancel page on your site and update the URL below. Leave null to go back to referrer page.
    'cancel_url'            => null,
    'buy_button_text'       => 'Buy now',
    'buy_button_css'		=> 'jrButton jrBlue',
];

To use these files, follow the instructions in the How to do e-commerce with JReviews and Stripe blog post.