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<?php |
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// Exit if accessed directly. |
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defined( 'ABSPATH' ) || exit; |
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/** |
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* PayPal API handler. |
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* |
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* @since 1.0.0 |
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*/ |
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class GetPaid_PayPal_API { |
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/** |
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* Retrieves the bearer token. |
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* |
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* @return string|\WP_Error |
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*/ |
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public static function get_token( $mode = 'live' ) { |
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$token = get_transient( 'getpaid_paypal_' . $mode . '_token' ); |
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if ( $token ) { |
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return $token; |
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} |
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$client_id = 'live' === $mode ? wpinv_get_option( 'paypal_client_id' ) : wpinv_get_option( 'paypal_sandbox_client_id' ); |
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$secret_key = 'live' === $mode ? wpinv_get_option( 'paypal_secret_key' ) : wpinv_get_option( 'paypal_sandbox_secret_key' ); |
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$url = self::get_api_url( 'v1/oauth2/token?grant_type=client_credentials', $mode ); |
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if ( empty( $client_id ) || empty( $secret_key ) ) { |
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return new \WP_Error( 'invalid_request', 'Missing client id or secret key.', array( 'status' => 400 ) ); |
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} |
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$args = array( |
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'method' => 'POST', |
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'timeout' => 30, |
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'headers' => array( |
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'Authorization' => 'Basic ' . base64_encode( $client_id . ':' . $secret_key ), // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode |
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'Accept' => 'application/json', |
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'Content-Type' => 'application/x-www-form-urlencoded', |
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), |
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); |
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$response = self::response_or_error( wp_remote_post( $url, $args ) ); |
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if ( is_wp_error( $response ) ) { |
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return $response; |
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} |
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if ( ! isset( $response->access_token ) ) { |
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return new \WP_Error( 'invalid_request', 'Could not create token.', array( 'status' => 400 ) ); |
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} |
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set_transient( 'getpaid_paypal_' . $mode . '_token', $response->access_token, $response->expires_in - 600 ); |
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return $response->access_token; |
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} |
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/** |
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* Retrieves the PayPal API URL. |
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* |
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* @param string $endpoint |
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* @return string |
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*/ |
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public static function get_api_url( $endpoint = '', $mode = 'live' ) { |
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$endpoint = ltrim( $endpoint, '/' ); |
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return 'live' === $mode ? 'https://api-m.paypal.com/' . $endpoint : 'https://api-m.sandbox.paypal.com/' . $endpoint; |
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} |
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/** |
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* Handles a post request. |
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* |
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* @param string $path The path to the endpoint. |
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* @param mixed $data The data to send. |
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* @param string $method The method to use. |
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* |
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* @return true|\WP_Error |
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*/ |
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public static function post( $path, $data, $mode = 'live', $method = 'POST' ) { |
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$access_token = self::get_token( $mode ); |
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if ( is_wp_error( $access_token ) ) { |
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return $access_token; |
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} |
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$url = self::get_api_url( $path, $mode ); |
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$args = array( |
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'method' => $method, |
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'headers' => array( |
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'Authorization' => 'Bearer ' . $access_token, |
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'Content-Type' => 'application/json', |
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), |
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'body' => wp_json_encode( $data ), |
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); |
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return self::response_or_error( wp_remote_post( $url, $args ) ); |
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} |
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/** |
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* Handles a get request. |
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* |
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* @param string $path The path to the endpoint. |
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* @param string $method |
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* @return object|\WP_Error |
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*/ |
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public static function get( $path, $mode = 'live', $method = 'GET' ) { |
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$access_token = self::get_token( $mode ); |
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if ( is_wp_error( $access_token ) ) { |
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return $access_token; |
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} |
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$url = self::get_api_url( $path, $mode ); |
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$args = array( |
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'method' => $method, |
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'headers' => array( |
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'Authorization' => 'Bearer ' . $access_token, |
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), |
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); |
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return self::response_or_error( wp_remote_get( $url, $args ) ); |
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} |
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/** |
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* Returns the response body |
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* |
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* @since 1.0.0 |
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* @version 1.0.0 |
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* @param \WP_Error|array $response |
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* @return \WP_Error|object |
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*/ |
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public static function response_or_error( $response ) { |
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if ( is_wp_error( $response ) ) { |
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return new \WP_Error( 'paypal_error', __( 'There was a problem connecting to the PayPal API endpoint.', 'invoicing' ) ); |
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} |
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if ( empty( $response['body'] ) ) { |
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return true; |
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} |
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$response_body = json_decode( wp_remote_retrieve_body( $response ) ); |
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if ( wp_remote_retrieve_response_code( $response ) > 299 ) { |
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// Normal errors. |
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if ( $response_body && isset( $response_body->message ) ) { |
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$error_message = $response_body->message; |
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// Identity errors. |
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} elseif ( $response_body && isset( $response_body->error_description ) ) { |
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$error_message = $response_body->error_description; |
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return new \WP_Error( 'paypal_error', wp_kses_post( $response_body->error_description ) ); |
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} else { |
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$error_message = __( 'There was an error connecting to the PayPal API endpoint.', 'invoicing' ); |
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} |
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return new \WP_Error( 'paypal_error', $error_message ); |
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} |
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return $response_body; |
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} |
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/** |
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* Fetches an order. |
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* |
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* @since 1.0.0 |
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* @version 1.0.0 |
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* @param string $order_id |
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* @link https://developer.paypal.com/docs/api/orders/v2/#orders_get |
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* @return \WP_Error|object |
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*/ |
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public static function get_order( $order_id, $mode = 'live' ) { |
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return self::get( '/v2/checkout/orders/' . $order_id, $mode ); |
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} |
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/** |
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* Fetches a subscription. |
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* |
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* @since 1.0.0 |
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* @version 1.0.0 |
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* @param string $subscription_id |
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* @link https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_get |
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* @return \WP_Error|object |
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*/ |
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public static function get_subscription( $subscription_id, $mode = 'live' ) { |
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return self::get( '/v1/billing/subscriptions/' . $subscription_id, $mode ); |
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} |
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/** |
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* Fetches a subscription's latest transactions (limits search to last one day). |
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* |
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* @since 1.0.0 |
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* @version 1.0.0 |
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* @param string $subscription_id |
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* @link https://developer.paypal.com/docs/api/subscriptions/v1/#subscriptions_transactions |
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* @return \WP_Error|object |
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*/ |
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public static function get_subscription_transaction( $subscription_id, $mode = 'live' ) { |
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$start_time = gmdate( 'Y-m-d\TH:i:s\Z', strtotime( '-1 day' ) ); |
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$end_time = gmdate( 'Y-m-d\TH:i:s\Z' ); |
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return self::get( "/v1/billing/subscriptions/$subscription_id/transactions?start_time=$start_time&end_time=$end_time", $mode ); |
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} |
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/** |
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* Refunds a capture. |
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* |
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* @since 1.0.0 |
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* @version 1.0.0 |
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* @param string $capture_id |
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* @param array $args |
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* @link https://developer.paypal.com/docs/api/payments/v2/#captures_refund |
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* @return \WP_Error|object |
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*/ |
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public static function refund_capture( $capture_id, $args = array(), $mode = 'live' ) { |
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return self::post( '/v2/payments/captures/' . $capture_id . '/refund', $args, $mode ); |
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} |
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} |
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AyeCode /
invoicing
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