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<?php |
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/** |
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* PayPal gateway for the native checkout. |
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* |
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* Uses the PayPal Orders v2 REST API: |
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* 1. JS Smart Buttons call our `create_payment` endpoint, which |
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* creates a PayPal order server-side and returns its id. |
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* 2. After the buyer approves in the PayPal popup, the JS layer |
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* calls our `capture_payment` endpoint, which captures the |
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* order server-side. We trust the captured status returned by |
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* PayPal — not anything the client claims. |
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* |
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* Credentials live in the existing eshb_settings option: |
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* - paypal-client-id |
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* - paypal-client-secret |
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* - paypal-mode ('sandbox' or 'live') |
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*/ |
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|
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if ( ! defined( 'ABSPATH' ) ) exit; |
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|
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class ESHB_Native_PayPal_Gateway extends ESHB_Native_Abstract_Gateway { |
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|
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protected $id = 'paypal'; |
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protected $title = 'PayPal'; |
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protected $description = ''; |
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|
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public function __construct() { |
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$this->title = __( 'PayPal', 'easy-hotel' ); |
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$this->description = __( 'Pay securely using your PayPal account or a credit card.', 'easy-hotel' ); |
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} |
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|
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private function get_settings() { |
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return [ |
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'client_id' => trim( (string) eshb_native_checkout_get_setting( 'paypal-client-id', '' ) ), |
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'client_secret' => trim( (string) eshb_native_checkout_get_setting( 'paypal-client-secret', '' ) ), |
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'mode' => ( eshb_native_checkout_get_setting( 'paypal-mode', 'sandbox' ) === 'live' ) ? 'live' : 'sandbox', |
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]; |
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} |
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|
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private function api_base() { |
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$s = $this->get_settings(); |
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return $s['mode'] === 'live' |
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? 'https://api-m.paypal.com' |
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: 'https://api-m.sandbox.paypal.com'; |
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} |
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|
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public function is_enabled() { |
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// Defaults to enabled when the switch has never been saved, so |
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// existing installs that already configured credentials keep working. |
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$switch_on = ! empty( eshb_native_checkout_get_setting( 'gateway-paypal-enable', true ) ); |
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|
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$s = $this->get_settings(); |
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return $switch_on && ! empty( $s['client_id'] ) && ! empty( $s['client_secret'] ); |
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} |
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|
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public function get_frontend_data() { |
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$s = $this->get_settings(); |
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return array_merge( parent::get_frontend_data(), [ |
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'clientId' => $s['client_id'], |
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'mode' => $s['mode'], |
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'currency' => $this->get_currency_code(), |
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] ); |
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} |
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|
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private function get_currency_code() { |
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// PayPal needs an ISO-4217 currency code. Prefer WooCommerce's |
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// configured currency (since the plugin already integrates with |
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// it for currency symbol formatting), then fall back to a guess |
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// from the symbol setting, then USD. |
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if ( function_exists( 'get_woocommerce_currency' ) ) { |
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$code = get_woocommerce_currency(); |
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if ( ! empty( $code ) ) return $code; |
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} |
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|
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$settings = get_option( 'eshb_settings', [] ); |
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$symbol = isset( $settings['currency_symbol'] ) ? trim( (string) $settings['currency_symbol'] ) : ''; |
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$map = [ |
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'$' => 'USD', |
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'€' => 'EUR', |
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'£' => 'GBP', |
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'¥' => 'JPY', |
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'A$' => 'AUD', |
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'C$' => 'CAD', |
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'₹' => 'INR', |
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'₺' => 'TRY', |
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'₽' => 'RUB', |
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]; |
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if ( ! empty( $symbol ) && isset( $map[ $symbol ] ) ) { |
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return $map[ $symbol ]; |
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} |
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|
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return apply_filters( 'eshb_native_paypal_currency', 'USD' ); |
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} |
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|
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/** |
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* Fetch an OAuth2 token from PayPal. Cached for 8 minutes since |
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* PayPal tokens last ~9 minutes. |
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*/ |
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private function get_access_token() { |
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$s = $this->get_settings(); |
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if ( empty( $s['client_id'] ) || empty( $s['client_secret'] ) ) { |
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return new WP_Error( 'paypal_not_configured', __( 'PayPal credentials are not configured.', 'easy-hotel' ) ); |
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} |
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|
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$cache_key = 'eshb_paypal_token_' . md5( $s['client_id'] . '|' . $s['mode'] ); |
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$cached = get_transient( $cache_key ); |
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if ( $cached ) return $cached; |
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|
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$response = wp_remote_post( $this->api_base() . '/v1/oauth2/token', [ |
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'timeout' => 20, |
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'headers' => [ |
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'Authorization' => 'Basic ' . base64_encode( $s['client_id'] . ':' . $s['client_secret'] ), |
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'Accept' => 'application/json', |
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'Content-Type' => 'application/x-www-form-urlencoded', |
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], |
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'body' => 'grant_type=client_credentials', |
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] ); |
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|
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if ( is_wp_error( $response ) ) return $response; |
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|
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$body = json_decode( wp_remote_retrieve_body( $response ), true ); |
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if ( empty( $body['access_token'] ) ) { |
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return new WP_Error( 'paypal_token_failed', $body['error_description'] ?? __( 'Unable to authenticate with PayPal.', 'easy-hotel' ) ); |
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} |
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|
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set_transient( $cache_key, $body['access_token'], 8 * MINUTE_IN_SECONDS ); |
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return $body['access_token']; |
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} |
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|
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public function create_payment( array $reservation, array $customer, array $pricing ) { |
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|
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$token = $this->get_access_token(); |
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if ( is_wp_error( $token ) ) { |
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return [ 'success' => false, 'message' => $token->get_error_message() ]; |
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} |
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|
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$amount = number_format( (float) ( $pricing['grandTotal'] ?? $pricing['totalPrice'] ?? 0 ), 2, '.', '' ); |
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$currency = $this->get_currency_code(); |
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|
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$payload = [ |
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'intent' => 'CAPTURE', |
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'purchase_units' => [ |
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[ |
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'amount' => [ |
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'currency_code' => $currency, |
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'value' => $amount, |
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], |
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'description' => sprintf( |
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/* translators: %s: accommodation title */ |
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__( 'Booking for %s', 'easy-hotel' ), |
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get_the_title( (int) ( $reservation['accomodation_id'] ?? 0 ) ) |
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), |
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], |
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], |
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'application_context' => [ |
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'brand_name' => get_bloginfo( 'name' ), |
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'user_action' => 'PAY_NOW', |
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'shipping_preference' => 'NO_SHIPPING', |
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], |
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]; |
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|
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$response = wp_remote_post( $this->api_base() . '/v2/checkout/orders', [ |
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'timeout' => 30, |
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'headers' => [ |
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'Authorization' => 'Bearer ' . $token, |
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'Content-Type' => 'application/json', |
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], |
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'body' => wp_json_encode( $payload ), |
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] ); |
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|
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if ( is_wp_error( $response ) ) { |
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return [ 'success' => false, 'message' => $response->get_error_message() ]; |
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} |
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|
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$body = json_decode( wp_remote_retrieve_body( $response ), true ); |
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if ( empty( $body['id'] ) ) { |
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$msg = $body['message'] ?? __( 'Failed to create PayPal order.', 'easy-hotel' ); |
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return [ 'success' => false, 'message' => $msg ]; |
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} |
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|
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return [ |
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'success' => true, |
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'data' => [ |
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'order_id' => $body['id'], |
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], |
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]; |
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} |
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|
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public function capture_payment( array $params ) { |
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$order_id = sanitize_text_field( $params['order_id'] ?? '' ); |
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if ( empty( $order_id ) ) { |
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return [ 'success' => false, 'message' => __( 'Missing PayPal order id.', 'easy-hotel' ) ]; |
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} |
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|
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$token = $this->get_access_token(); |
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if ( is_wp_error( $token ) ) { |
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return [ 'success' => false, 'message' => $token->get_error_message() ]; |
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} |
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|
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$response = wp_remote_post( $this->api_base() . '/v2/checkout/orders/' . rawurlencode( $order_id ) . '/capture', [ |
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'timeout' => 30, |
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'headers' => [ |
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'Authorization' => 'Bearer ' . $token, |
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'Content-Type' => 'application/json', |
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// Idempotency key prevents accidental double-capture if the JS layer retries. |
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'PayPal-Request-Id' => 'eshb-' . $order_id, |
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], |
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'body' => '{}', |
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] ); |
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|
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if ( is_wp_error( $response ) ) { |
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return [ 'success' => false, 'message' => $response->get_error_message() ]; |
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} |
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|
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$body = json_decode( wp_remote_retrieve_body( $response ), true ); |
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$status = $body['status'] ?? ''; |
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|
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if ( $status !== 'COMPLETED' ) { |
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$msg = $body['message'] ?? sprintf( |
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/* translators: %s: PayPal capture status code returned by the Orders v2 API */ |
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__( 'PayPal capture failed (%s).', 'easy-hotel' ), |
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$status |
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); |
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return [ 'success' => false, 'message' => $msg, 'raw' => $body ]; |
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} |
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|
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$capture = $body['purchase_units'][0]['payments']['captures'][0] ?? []; |
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$amount = (float) ( $capture['amount']['value'] ?? 0 ); |
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$currency = $capture['amount']['currency_code'] ?? $this->get_currency_code(); |
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$txn_id = $capture['id'] ?? $order_id; |
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|
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return [ |
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'success' => true, |
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'transaction_id' => $txn_id, |
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'amount' => $amount, |
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'currency' => $currency, |
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'mode' => $this->get_settings()['mode'], |
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'raw' => $body, |
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]; |
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} |
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} |
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|
