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<?php |
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|
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namespace Templately\API; |
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|
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/** |
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* Plugin-initiated checkout. |
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* |
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* Asks the backend for a frontend checkout URL carrying a short-lived login |
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* token bound to the connected api_key account (no front-end re-login), and |
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* hands it back to the React app, which redirects the buyer to it. After |
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* payment the frontend returns the buyer to `return_url` with |
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* `templately_purchase`. |
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*/ |
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class Checkout extends API { |
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|
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public function register_routes() { |
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$this->post( 'checkout', [ $this, 'checkout' ] ); |
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} |
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|
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public function checkout() { |
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$purchase_type = $this->get_param( 'purchase_type', 'template' ); |
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|
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/** |
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* Buying a template is a content decision any contributor may make, but a |
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* subscription is bought *for the account* and changes what everyone on it |
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* pays. The base gate is `delete_posts`, so without this a Contributor |
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* could start a plan purchase against the site owner's account. |
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*/ |
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if ( 'subscription' === $purchase_type && ! current_user_can( 'manage_options' ) ) { |
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return $this->error( |
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'insufficient_permission', |
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__( 'Only administrators can change the subscription.', 'templately' ), |
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'checkout', |
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rest_authorization_required_code() |
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); |
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} |
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$id = $this->get_param( 'id', 0, 'intval' ); |
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$return_url = $this->get_param( 'return_url', admin_url( 'admin.php?page=templately' ), 'esc_url_raw' ); |
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|
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if ( empty( $id ) ) { |
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return $this->error( 'invalid_checkout_item', __( 'No item selected for purchase.', 'templately' ), 'checkout', 422 ); |
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} |
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|
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$funcArgs = [ |
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'api_key' => $this->api_key, |
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'purchase_type' => $purchase_type, |
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'id' => $id, |
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'return_url' => $return_url, |
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]; |
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|
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foreach ( [ 'item_type', 'billing_interval', 'coupon' ] as $optional ) { |
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$value = $this->get_param( $optional, '' ); |
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if ( ! empty( $value ) ) { |
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$funcArgs[ $optional ] = $value; |
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} |
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} |
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|
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$response = $this->http()->mutation( 'pluginCheckout', 'status, message, data', $funcArgs )->post(); |
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|
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if ( is_wp_error( $response ) ) { |
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return $this->error( 'invalid_checkout_response', $response->get_error_message(), 'checkout' ); |
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} |
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|
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$data = ! empty( $response['data'] ) ? json_decode( $response['data'], true ) : []; |
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|
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// Frontend checkout URL created — the app redirects the buyer to it. |
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if ( ! empty( $data['url'] ) ) { |
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/** |
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* The client assigns this straight to `window.location.href`, so verify |
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* it is an https URL on a Templately host before handing it over. The |
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* response is our own API's, but a redirect target that arrives over the |
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* wire and is followed unchecked is an open redirect waiting to happen. |
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*/ |
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$url = esc_url_raw( $data['url'] ); |
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$host = wp_parse_url( $url, PHP_URL_HOST ); |
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|
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$allowed = $host && ( 'templately.com' === $host || 'templately.dev' === $host || str_ends_with( $host, '.templately.com' ) || str_ends_with( $host, '.templately.dev' ) ); |
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|
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if ( ! $allowed || 'https' !== wp_parse_url( $url, PHP_URL_SCHEME ) ) { |
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return $this->error( 'invalid_checkout_url', __( 'The checkout could not be verified. Please try again.', 'templately' ), 'checkout' ); |
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} |
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|
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return $this->success( [ 'url' => $url ] ); |
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} |
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|
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$message = ! empty( $response['message'] ) ? $response['message'] : __( 'Could not start the checkout. Please try again.', 'templately' ); |
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|
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return $this->error( 'checkout_failed', $message, 'checkout' ); |
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} |
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} |
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|
