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<?php |
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/** |
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* Paypal payment gateway |
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* |
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*/ |
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defined( 'ABSPATH' ) || exit; |
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/** |
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* Paypal Payment Gateway class. |
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* |
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*/ |
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class GetPaid_Paypal_Gateway extends GetPaid_Payment_Gateway { |
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/** |
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* Payment method id. |
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* |
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* @var string |
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*/ |
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public $id = 'paypal'; |
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/** |
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* An array of features that this gateway supports. |
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* |
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* @var array |
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*/ |
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protected $supports = array( 'subscription', 'sandbox' ); |
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/** |
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* Payment method order. |
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* |
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* @var int |
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*/ |
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public $order = 1; |
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/** |
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* Stores line items to send to PayPal. |
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* |
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* @var array |
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*/ |
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protected $line_items = array(); |
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/** |
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* Endpoint for requests from PayPal. |
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* |
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* @var string |
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*/ |
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protected $notify_url; |
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/** |
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* Endpoint for requests to PayPal. |
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* |
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* @var string |
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*/ |
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protected $endpoint; |
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/** |
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* Currencies this gateway is allowed for. |
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* |
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* @var array |
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*/ |
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public $currencies = array( 'AUD', 'BRL', 'CAD', 'MXN', 'NZD', 'HKD', 'SGD', 'USD', 'EUR', 'JPY', 'TRY', 'NOK', 'CZK', 'DKK', 'HUF', 'ILS', 'MYR', 'PHP', 'PLN', 'SEK', 'CHF', 'TWD', 'THB', 'GBP', 'RMB', 'RUB', 'INR' ); |
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/** |
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* URL to view a transaction. |
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* |
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* @var string |
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*/ |
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public $view_transaction_url = 'https://www.{sandbox}paypal.com/activity/payment/%s'; |
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/** |
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* URL to view a subscription. |
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* |
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* @var string |
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*/ |
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public $view_subscription_url = 'https://www.{sandbox}paypal.com/cgi-bin/webscr?cmd=_profile-recurring-payments&encrypted_profile_id=%s'; |
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/** |
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* Class constructor. |
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*/ |
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public function __construct() { |
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$this->title = __( 'PayPal Standard', 'invoicing' ); |
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$this->method_title = __( 'PayPal Standard', 'invoicing' ); |
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$this->checkout_button_text = __( 'Proceed to PayPal', 'invoicing' ); |
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$this->notify_url = wpinv_get_ipn_url( $this->id ); |
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add_filter( 'getpaid_paypal_args', array( $this, 'process_subscription' ), 10, 2 ); |
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add_filter( 'wpinv_gateway_description', array( $this, 'sandbox_notice' ), 10, 2 ); |
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parent::__construct(); |
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} |
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/** |
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* Process Payment. |
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* |
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* |
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* @param WPInv_Invoice $invoice Invoice. |
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* @param array $submission_data Posted checkout fields. |
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* @param GetPaid_Payment_Form_Submission $submission Checkout submission. |
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* @return array |
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*/ |
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public function process_payment( $invoice, $submission_data, $submission ) { |
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// Get redirect url. |
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$paypal_redirect = $this->get_request_url( $invoice ); |
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// Add a note about the request url. |
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$invoice->add_note( |
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sprintf( |
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__( 'Redirecting to PayPal: %s', 'invoicing' ), |
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esc_url( $paypal_redirect ) |
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), |
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false, |
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false, |
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true |
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); |
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// Redirect to PayPal |
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wp_redirect( $paypal_redirect ); |
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exit; |
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} |
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/** |
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* Get the PayPal request URL for an invoice. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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* @return string |
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*/ |
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public function get_request_url( $invoice ) { |
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// Endpoint for this request |
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$this->endpoint = $this->is_sandbox( $invoice ) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr?test_ipn=1&' : 'https://www.paypal.com/cgi-bin/webscr?'; |
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// Retrieve paypal args. |
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$paypal_args = map_deep( $this->get_paypal_args( $invoice ), 'urlencode' ); |
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if ( $invoice->is_recurring() ) { |
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$paypal_args['bn'] = 'GetPaid_Subscribe_WPS_US'; |
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} else { |
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$paypal_args['bn'] = 'GetPaid_ShoppingCart_WPS_US'; |
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} |
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return add_query_arg( $paypal_args, $this->endpoint ); |
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} |
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/** |
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* Get PayPal Args for passing to PP. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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* @return array |
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*/ |
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protected function get_paypal_args( $invoice ) { |
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// Whether or not to send the line items as one item. |
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$force_one_line_item = apply_filters( 'getpaid_paypal_force_one_line_item', false, $invoice ); |
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if ( $invoice->is_recurring() || ( wpinv_use_taxes() && wpinv_prices_include_tax() ) ) { |
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$force_one_line_item = true; |
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} |
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$paypal_args = apply_filters( |
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'getpaid_paypal_args', |
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array_merge( |
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$this->get_transaction_args( $invoice ), |
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$this->get_line_item_args( $invoice, $force_one_line_item ) |
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), |
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$invoice |
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); |
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return $this->fix_request_length( $invoice, $paypal_args ); |
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} |
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/** |
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* Get transaction args for paypal request. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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* @return array |
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*/ |
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protected function get_transaction_args( $invoice ) { |
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return array( |
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'cmd' => '_cart', |
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'business' => wpinv_get_option( 'paypal_email', false ), |
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'no_shipping' => '1', |
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'shipping' => '0', |
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'no_note' => '1', |
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'charset' => 'utf-8', |
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'rm' => is_ssl() ? 2 : 1, |
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'upload' => 1, |
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'currency_code' => $invoice->get_currency(), // https://developer.paypal.com/docs/nvp-soap-api/currency-codes/#paypal |
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'return' => esc_url_raw( $this->get_return_url( $invoice ) ), |
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'cancel_return' => esc_url_raw( $invoice->get_checkout_payment_url() ), |
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'notify_url' => getpaid_limit_length( $this->notify_url, 255 ), |
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'invoice' => getpaid_limit_length( $invoice->get_number(), 127 ), |
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'custom' => $invoice->get_id(), |
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'first_name' => getpaid_limit_length( $invoice->get_first_name(), 32 ), |
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'last_name' => getpaid_limit_length( $invoice->get_last_name(), 64 ), |
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'country' => getpaid_limit_length( $invoice->get_country(), 2 ), |
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'email' => getpaid_limit_length( $invoice->get_email(), 127 ), |
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'cbt' => get_bloginfo( 'name' ) |
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); |
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} |
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/** |
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* Get line item args for paypal request. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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* @param bool $force_one_line_item Create only one item for this invoice. |
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* @return array |
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*/ |
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protected function get_line_item_args( $invoice, $force_one_line_item = false ) { |
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// Maybe send invoice as a single item. |
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if ( $force_one_line_item ) { |
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return $this->get_line_item_args_single_item( $invoice ); |
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} |
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// Send each line item individually. |
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$line_item_args = array(); |
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// Prepare line items. |
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$this->prepare_line_items( $invoice ); |
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// Add taxes to the cart |
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if ( wpinv_use_taxes() && $invoice->is_taxable() ) { |
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$line_item_args['tax_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_tax(), 2 ); |
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} |
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// Add discount. |
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if ( $invoice->get_total_discount() > 0 ) { |
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$line_item_args['discount_amount_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_discount(), 2 ); |
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} |
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return array_merge( $line_item_args, $this->get_line_items() ); |
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} |
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/** |
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* Get line item args for paypal request as a single line item. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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* @return array |
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*/ |
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protected function get_line_item_args_single_item( $invoice ) { |
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$this->delete_line_items(); |
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$item_name = sprintf( __( 'Invoice #%s', 'invoicing' ), $invoice->get_number() ); |
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$this->add_line_item( $item_name, 1, wpinv_sanitize_amount( (float) $invoice->get_total(), 2 ), $invoice->get_id() ); |
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return $this->get_line_items(); |
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} |
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/** |
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* Return all line items. |
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*/ |
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protected function get_line_items() { |
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return $this->line_items; |
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} |
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/** |
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* Remove all line items. |
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*/ |
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protected function delete_line_items() { |
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$this->line_items = array(); |
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} |
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/** |
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* Prepare line items to send to paypal. |
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* |
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* @param WPInv_Invoice $invoice Invoice object. |
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*/ |
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protected function prepare_line_items( $invoice ) { |
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$this->delete_line_items(); |
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// Items. |
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foreach ( $invoice->get_items() as $item ) { |
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$amount = $invoice->get_template() == 'amount' ? $item->get_price() : $item->get_sub_total(); |
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$quantity = $invoice->get_template() == 'amount' ? 1 : $item->get_quantity(); |
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$this->add_line_item( $item->get_raw_name(), $quantity, $amount, $item->get_id() ); |
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} |
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// Fees. |
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foreach ( $invoice->get_fees() as $fee => $data ) { |
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$this->add_line_item( $fee, 1, wpinv_sanitize_amount( $data['initial_fee'] ) ); |
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} |
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} |
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/** |
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* Add PayPal Line Item. |
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* |
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* @param string $item_name Item name. |
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* @param int $quantity Item quantity. |
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* @param float $amount Amount. |
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* @param string $item_number Item number. |
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*/ |
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protected function add_line_item( $item_name, $quantity = 1, $amount = 0.0, $item_number = '' ) { |
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$index = ( count( $this->line_items ) / 4 ) + 1; |
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$item = apply_filters( |
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'getpaid_paypal_line_item', |
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array( |
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'item_name' => html_entity_decode( getpaid_limit_length( $item_name ? wp_strip_all_tags( $item_name ) : __( 'Item', 'invoicing' ), 127 ), ENT_NOQUOTES, 'UTF-8' ), |
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'quantity' => (int) $quantity, |
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'amount' => wpinv_sanitize_amount( (float) $amount, 2 ), |
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'item_number' => $item_number, |
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), |
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$item_name, |
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$quantity, |
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$amount, |
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$item_number |
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); |
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$this->line_items[ 'item_name_' . $index ] = getpaid_limit_length( $item['item_name'], 127 ); |
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$this->line_items[ 'quantity_' . $index ] = $item['quantity']; |
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// The price or amount of the product, service, or contribution, not including shipping, handling, or tax. |
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$this->line_items[ 'amount_' . $index ] = $item['amount']; |
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$this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 ); |
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} |
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/** |
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* If the default request with line items is too long, generate a new one with only one line item. |
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* |
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* https://support.microsoft.com/en-us/help/208427/maximum-url-length-is-2-083-characters-in-internet-explorer. |
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* |
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* @param WPInv_Invoice $invoice Invoice to be sent to Paypal. |
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* @param array $paypal_args Arguments sent to Paypal in the request. |
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* @return array |
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*/ |
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protected function fix_request_length( $invoice, $paypal_args ) { |
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$max_paypal_length = 2083; |
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$query_candidate = http_build_query( $paypal_args, '', '&' ); |
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if ( strlen( $this->endpoint . $query_candidate ) <= $max_paypal_length ) { |
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return $paypal_args; |
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} |
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return apply_filters( |
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'getpaid_paypal_args', |
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array_merge( |
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$this->get_transaction_args( $invoice ), |
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$this->get_line_item_args( $invoice, true ) |
348
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), |
349
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$invoice |
350
|
|
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); |
351
|
|
|
|
352
|
|
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} |
353
|
|
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|
354
|
|
|
/** |
355
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|
|
* Processes recurring invoices. |
356
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|
|
* |
357
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|
|
* @param array $paypal_args PayPal args. |
358
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|
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* @param WPInv_Invoice $invoice Invoice object. |
359
|
|
|
*/ |
360
|
|
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public function process_subscription( $paypal_args, $invoice ) { |
361
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|
|
|
362
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|
|
// Make sure this is a subscription. |
363
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|
|
if ( ! $invoice->is_recurring() || ! $subscription = wpinv_get_subscription( $invoice ) ) { |
364
|
|
|
return $paypal_args; |
365
|
|
|
} |
366
|
|
|
|
367
|
|
|
// It's a subscription |
368
|
|
|
$paypal_args['cmd'] = '_xclick-subscriptions'; |
369
|
|
|
|
370
|
|
|
// Subscription name. |
371
|
|
|
$paypal_args['item_name'] = sprintf( __( 'Invoice #%s', 'invoicing' ), $invoice->get_number() ); |
372
|
|
|
|
373
|
|
|
// Get subscription args. |
374
|
|
|
$period = strtoupper( substr( $subscription->get_period(), 0, 1) ); |
375
|
|
|
$interval = (int) $subscription->get_frequency(); |
376
|
|
|
$bill_times = (int) $subscription->get_bill_times(); |
377
|
|
|
$initial_amount = (float) wpinv_sanitize_amount( $invoice->get_initial_total(), 2 ); |
|
|
|
|
378
|
|
|
$recurring_amount = (float) wpinv_sanitize_amount( $invoice->get_recurring_total(), 2 ); |
379
|
|
|
$subscription_item = $invoice->get_recurring( true ); |
380
|
|
|
|
381
|
|
|
if ( $subscription_item->has_free_trial() ) { |
382
|
|
|
|
383
|
|
|
$paypal_args['a1'] = 0 == $initial_amount ? 0 : $initial_amount; |
384
|
|
|
|
385
|
|
|
// Trial period length. |
386
|
|
|
$paypal_args['p1'] = $subscription_item->get_trial_interval(); |
387
|
|
|
|
388
|
|
|
// Trial period. |
389
|
|
|
$paypal_args['t1'] = $subscription_item->get_trial_period(); |
390
|
|
|
|
391
|
|
|
} else if ( $initial_amount != $recurring_amount ) { |
392
|
|
|
|
393
|
|
|
// No trial period, but initial amount includes a sign-up fee and/or other items, so charge it as a separate period. |
394
|
|
|
|
395
|
|
|
if ( 1 == $bill_times ) { |
396
|
|
|
$param_number = 3; |
397
|
|
|
} else { |
398
|
|
|
$param_number = 1; |
399
|
|
|
} |
400
|
|
|
|
401
|
|
|
$paypal_args[ 'a' . $param_number ] = $initial_amount ? 0 : $initial_amount; |
402
|
|
|
|
403
|
|
|
// Sign Up interval |
404
|
|
|
$paypal_args[ 'p' . $param_number ] = $interval; |
405
|
|
|
|
406
|
|
|
// Sign Up unit of duration |
407
|
|
|
$paypal_args[ 't' . $param_number ] = $period; |
408
|
|
|
|
409
|
|
|
} |
410
|
|
|
|
411
|
|
|
// We have a recurring payment |
412
|
|
|
if ( ! isset( $param_number ) || 1 == $param_number ) { |
413
|
|
|
|
414
|
|
|
// Subscription price |
415
|
|
|
$paypal_args['a3'] = $recurring_amount; |
416
|
|
|
|
417
|
|
|
// Subscription duration |
418
|
|
|
$paypal_args['p3'] = $interval; |
419
|
|
|
|
420
|
|
|
// Subscription period |
421
|
|
|
$paypal_args['t3'] = $period; |
422
|
|
|
|
423
|
|
|
} |
424
|
|
|
|
425
|
|
|
// Recurring payments |
426
|
|
|
if ( 1 == $bill_times || ( $initial_amount != $recurring_amount && ! $subscription_item->has_free_trial() && 2 == $bill_times ) ) { |
427
|
|
|
|
428
|
|
|
// Non-recurring payments |
429
|
|
|
$paypal_args['src'] = 0; |
430
|
|
|
|
431
|
|
|
} else { |
432
|
|
|
|
433
|
|
|
$paypal_args['src'] = 1; |
434
|
|
|
|
435
|
|
|
if ( $bill_times > 0 ) { |
436
|
|
|
|
437
|
|
|
// An initial period is being used to charge a sign-up fee |
438
|
|
|
if ( $initial_amount != $recurring_amount && ! $subscription_item->has_free_trial() ) { |
439
|
|
|
$bill_times--; |
440
|
|
|
} |
441
|
|
|
|
442
|
|
|
// Make sure it's not over the max of 52 |
443
|
|
|
$paypal_args['srt'] = ( $bill_times <= 52 ? absint( $bill_times ) : 52 ); |
444
|
|
|
|
445
|
|
|
} |
446
|
|
|
} |
447
|
|
|
|
448
|
|
|
// Force return URL so that order description & instructions display |
449
|
|
|
$paypal_args['rm'] = 2; |
450
|
|
|
|
451
|
|
|
// Get rid of redudant items. |
452
|
|
|
foreach ( array( 'item_name_1', 'quantity_1', 'amount_1', 'item_number_1' ) as $arg ) { |
453
|
|
|
|
454
|
|
|
if ( isset( $paypal_args[ $arg ] ) ) { |
455
|
|
|
unset( $paypal_args[ $arg ] ); |
456
|
|
|
} |
457
|
|
|
|
458
|
|
|
} |
459
|
|
|
|
460
|
|
|
return apply_filters( |
461
|
|
|
'getpaid_paypal_subscription_args', |
462
|
|
|
$paypal_args, |
463
|
|
|
$invoice |
464
|
|
|
); |
465
|
|
|
|
466
|
|
|
} |
467
|
|
|
|
468
|
|
|
/** |
469
|
|
|
* Processes ipns and marks payments as complete. |
470
|
|
|
* |
471
|
|
|
* @return void |
472
|
|
|
*/ |
473
|
|
|
public function verify_ipn() { |
474
|
|
|
new GetPaid_Paypal_Gateway_IPN_Handler( $this ); |
475
|
|
|
} |
476
|
|
|
|
477
|
|
|
/** |
478
|
|
|
* Displays a notice on the checkout page if sandbox is enabled. |
479
|
|
|
*/ |
480
|
|
|
public function sandbox_notice( $description, $gateway ) { |
481
|
|
|
if ( 'paypal' == $gateway && wpinv_is_test_mode( 'paypal' ) ) { |
482
|
|
|
$description .= '<br> <br>' . sprintf( |
483
|
|
|
__( 'SANDBOX ENABLED. You can use sandbox testing accounts only. See the %sPayPal Sandbox Testing Guide%s for more details.', 'invoicing' ), |
484
|
|
|
'<a href="https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/">', |
485
|
|
|
'</a>' |
486
|
|
|
); |
487
|
|
|
} |
488
|
|
|
return $description; |
489
|
|
|
|
490
|
|
|
} |
491
|
|
|
|
492
|
|
|
} |
493
|
|
|
|
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.