AyeCode /
invoicing
| Total Complexity | 52 |
| Total Lines | 476 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like GetPaid_Paypal_Gateway often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use GetPaid_Paypal_Gateway, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class GetPaid_Paypal_Gateway extends GetPaid_Payment_Gateway { |
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| 14 | |||
| 15 | /** |
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| 16 | * Payment method id. |
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| 17 | * |
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| 18 | * @var string |
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| 19 | */ |
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| 20 | public $id = 'paypal'; |
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| 21 | |||
| 22 | /** |
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| 23 | * An array of features that this gateway supports. |
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| 24 | * |
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| 25 | * @var array |
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| 26 | */ |
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| 27 | protected $supports = array( 'subscription', 'sandbox' ); |
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| 28 | |||
| 29 | /** |
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| 30 | * Payment method order. |
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| 31 | * |
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| 32 | * @var int |
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| 33 | */ |
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| 34 | public $order = 1; |
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| 35 | |||
| 36 | /** |
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| 37 | * Stores line items to send to PayPal. |
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| 38 | * |
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| 39 | * @var array |
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| 40 | */ |
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| 41 | protected $line_items = array(); |
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| 42 | |||
| 43 | /** |
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| 44 | * Endpoint for requests from PayPal. |
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| 45 | * |
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| 46 | * @var string |
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| 47 | */ |
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| 48 | protected $notify_url; |
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| 49 | |||
| 50 | /** |
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| 51 | * Endpoint for requests to PayPal. |
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| 52 | * |
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| 53 | * @var string |
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| 54 | */ |
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| 55 | protected $endpoint; |
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| 56 | |||
| 57 | /** |
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| 58 | * Currencies this gateway is allowed for. |
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| 59 | * |
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| 60 | * @var array |
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| 61 | */ |
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| 62 | 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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| 63 | |||
| 64 | /** |
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| 65 | * URL to view a transaction. |
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| 66 | * |
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| 67 | * @var string |
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| 68 | */ |
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| 69 | public $view_transaction_url = 'https://www.{sandbox}paypal.com/activity/payment/%s'; |
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| 70 | |||
| 71 | /** |
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| 72 | * URL to view a subscription. |
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| 73 | * |
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| 74 | * @var string |
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| 75 | */ |
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| 76 | public $view_subscription_url = 'https://www.{sandbox}paypal.com/cgi-bin/webscr?cmd=_profile-recurring-payments&encrypted_profile_id=%s'; |
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| 77 | |||
| 78 | /** |
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| 79 | * Class constructor. |
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| 80 | */ |
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| 81 | public function __construct() { |
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| 82 | |||
| 83 | $this->title = __( 'PayPal Standard', 'invoicing' ); |
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| 84 | $this->method_title = __( 'PayPal Standard', 'invoicing' ); |
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| 85 | $this->checkout_button_text = __( 'Proceed to PayPal', 'invoicing' ); |
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| 86 | $this->notify_url = wpinv_get_ipn_url( $this->id ); |
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| 87 | |||
| 88 | add_filter( 'getpaid_paypal_args', array( $this, 'process_subscription' ), 10, 2 ); |
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| 89 | add_filter( 'wpinv_gateway_description', array( $this, 'sandbox_notice' ), 10, 2 ); |
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| 90 | |||
| 91 | parent::__construct(); |
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| 92 | } |
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| 93 | |||
| 94 | /** |
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| 95 | * Process Payment. |
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| 96 | * |
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| 97 | * |
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| 98 | * @param WPInv_Invoice $invoice Invoice. |
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| 99 | * @param array $submission_data Posted checkout fields. |
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| 100 | * @param GetPaid_Payment_Form_Submission $submission Checkout submission. |
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| 101 | * @return array |
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| 102 | */ |
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| 103 | public function process_payment( $invoice, $submission_data, $submission ) { |
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| 104 | |||
| 105 | // Get redirect url. |
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| 106 | $paypal_redirect = $this->get_request_url( $invoice ); |
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| 107 | |||
| 108 | // Add a note about the request url. |
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| 109 | $invoice->add_note( |
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| 110 | sprintf( |
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| 111 | __( 'Redirecting to PayPal: %s', 'invoicing' ), |
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| 112 | esc_url( $paypal_redirect ) |
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| 113 | ), |
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| 114 | false, |
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| 115 | false, |
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| 116 | true |
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| 117 | ); |
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| 118 | |||
| 119 | // Redirect to PayPal |
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| 120 | wp_redirect( $paypal_redirect ); |
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| 121 | exit; |
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| 122 | |||
| 123 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * Get the PayPal request URL for an invoice. |
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| 127 | * |
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| 128 | * @param WPInv_Invoice $invoice Invoice object. |
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| 129 | * @return string |
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| 130 | */ |
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| 131 | public function get_request_url( $invoice ) { |
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| 132 | |||
| 133 | // Endpoint for this request |
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| 134 | $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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| 135 | |||
| 136 | // Retrieve paypal args. |
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| 137 | $paypal_args = map_deep( $this->get_paypal_args( $invoice ), 'urlencode' ); |
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| 138 | |||
| 139 | if ( $invoice->is_recurring() ) { |
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| 140 | $paypal_args['bn'] = 'GetPaid_Subscribe_WPS_US'; |
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| 141 | } else { |
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| 142 | $paypal_args['bn'] = 'GetPaid_ShoppingCart_WPS_US'; |
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| 143 | } |
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| 144 | |||
| 145 | return add_query_arg( $paypal_args, $this->endpoint ); |
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| 146 | |||
| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * Get PayPal Args for passing to PP. |
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| 151 | * |
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| 152 | * @param WPInv_Invoice $invoice Invoice object. |
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| 153 | * @return array |
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| 154 | */ |
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| 155 | protected function get_paypal_args( $invoice ) { |
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| 156 | |||
| 157 | // Whether or not to send the line items as one item. |
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| 158 | $force_one_line_item = apply_filters( 'getpaid_paypal_force_one_line_item', false, $invoice ); |
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| 159 | |||
| 160 | if ( $invoice->is_recurring() || ( wpinv_use_taxes() && wpinv_prices_include_tax() ) ) { |
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| 161 | $force_one_line_item = true; |
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| 162 | } |
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| 163 | |||
| 164 | $paypal_args = apply_filters( |
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| 165 | 'getpaid_paypal_args', |
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| 166 | array_merge( |
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| 167 | $this->get_transaction_args( $invoice ), |
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| 168 | $this->get_line_item_args( $invoice, $force_one_line_item ) |
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| 169 | ), |
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| 170 | $invoice |
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| 171 | ); |
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| 172 | |||
| 173 | return $this->fix_request_length( $invoice, $paypal_args ); |
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| 174 | } |
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| 175 | |||
| 176 | /** |
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| 177 | * Get transaction args for paypal request. |
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| 178 | * |
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| 179 | * @param WPInv_Invoice $invoice Invoice object. |
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| 180 | * @return array |
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| 181 | */ |
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| 182 | protected function get_transaction_args( $invoice ) { |
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| 183 | |||
| 184 | return array( |
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| 185 | 'cmd' => '_cart', |
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| 186 | 'business' => wpinv_get_option( 'paypal_email', false ), |
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| 187 | 'no_shipping' => '1', |
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| 188 | 'shipping' => '0', |
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| 189 | 'no_note' => '1', |
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| 190 | 'charset' => 'utf-8', |
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| 191 | 'rm' => is_ssl() ? 2 : 1, |
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| 192 | 'upload' => 1, |
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| 193 | 'currency_code' => $invoice->get_currency(), // https://developer.paypal.com/docs/nvp-soap-api/currency-codes/#paypal |
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| 194 | 'return' => esc_url_raw( $this->get_return_url( $invoice ) ), |
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| 195 | 'cancel_return' => esc_url_raw( $invoice->get_checkout_payment_url() ), |
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| 196 | 'notify_url' => getpaid_limit_length( $this->notify_url, 255 ), |
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| 197 | 'invoice' => getpaid_limit_length( $invoice->get_number(), 127 ), |
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| 198 | 'custom' => $invoice->get_id(), |
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| 199 | 'first_name' => getpaid_limit_length( $invoice->get_first_name(), 32 ), |
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| 200 | 'last_name' => getpaid_limit_length( $invoice->get_last_name(), 64 ), |
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| 201 | 'country' => getpaid_limit_length( $invoice->get_country(), 2 ), |
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| 202 | 'email' => getpaid_limit_length( $invoice->get_email(), 127 ), |
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| 203 | 'cbt' => get_bloginfo( 'name' ) |
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| 204 | ); |
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| 205 | |||
| 206 | } |
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| 207 | |||
| 208 | /** |
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| 209 | * Get line item args for paypal request. |
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| 210 | * |
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| 211 | * @param WPInv_Invoice $invoice Invoice object. |
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| 212 | * @param bool $force_one_line_item Create only one item for this invoice. |
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| 213 | * @return array |
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| 214 | */ |
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| 215 | protected function get_line_item_args( $invoice, $force_one_line_item = false ) { |
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| 216 | |||
| 217 | // Maybe send invoice as a single item. |
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| 218 | if ( $force_one_line_item ) { |
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| 219 | return $this->get_line_item_args_single_item( $invoice ); |
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| 220 | } |
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| 221 | |||
| 222 | // Send each line item individually. |
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| 223 | $line_item_args = array(); |
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| 224 | |||
| 225 | // Prepare line items. |
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| 226 | $this->prepare_line_items( $invoice ); |
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| 227 | |||
| 228 | // Add taxes to the cart |
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| 229 | if ( wpinv_use_taxes() && $invoice->is_taxable() ) { |
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| 230 | $line_item_args['tax_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_tax(), 2 ); |
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| 231 | } |
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| 232 | |||
| 233 | // Add discount. |
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| 234 | if ( $invoice->get_total_discount() > 0 ) { |
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| 235 | $line_item_args['discount_amount_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_discount(), 2 ); |
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| 236 | } |
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| 237 | |||
| 238 | return array_merge( $line_item_args, $this->get_line_items() ); |
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| 239 | |||
| 240 | } |
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| 241 | |||
| 242 | /** |
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| 243 | * Get line item args for paypal request as a single line item. |
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| 244 | * |
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| 245 | * @param WPInv_Invoice $invoice Invoice object. |
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| 246 | * @return array |
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| 247 | */ |
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| 248 | protected function get_line_item_args_single_item( $invoice ) { |
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| 249 | $this->delete_line_items(); |
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| 250 | |||
| 251 | $item_name = sprintf( __( 'Invoice #%s', 'invoicing' ), $invoice->get_number() ); |
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| 252 | $this->add_line_item( $item_name, 1, wpinv_sanitize_amount( (float) $invoice->get_total(), 2 ), $invoice->get_id() ); |
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| 253 | |||
| 254 | return $this->get_line_items(); |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Return all line items. |
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| 259 | */ |
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| 260 | protected function get_line_items() { |
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| 262 | } |
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| 263 | |||
| 264 | /** |
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| 265 | * Remove all line items. |
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| 266 | */ |
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| 267 | protected function delete_line_items() { |
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| 268 | $this->line_items = array(); |
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| 269 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * Prepare line items to send to paypal. |
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| 273 | * |
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| 274 | * @param WPInv_Invoice $invoice Invoice object. |
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| 275 | */ |
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| 276 | protected function prepare_line_items( $invoice ) { |
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| 277 | $this->delete_line_items(); |
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| 278 | |||
| 279 | // Items. |
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| 280 | foreach ( $invoice->get_items() as $item ) { |
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| 281 | $amount = $invoice->get_template() == 'amount' ? $item->get_price() : $item->get_sub_total(); |
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| 282 | $quantity = $invoice->get_template() == 'amount' ? 1 : $item->get_quantity(); |
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| 283 | $this->add_line_item( $item->get_raw_name(), $quantity, $amount, $item->get_id() ); |
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| 284 | } |
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| 285 | |||
| 286 | // Fees. |
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| 287 | foreach ( $invoice->get_fees() as $fee => $data ) { |
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| 288 | $this->add_line_item( $fee, 1, wpinv_sanitize_amount( $data['initial_fee'] ) ); |
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| 289 | } |
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| 290 | |||
| 291 | } |
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| 292 | |||
| 293 | /** |
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| 294 | * Add PayPal Line Item. |
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| 295 | * |
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| 296 | * @param string $item_name Item name. |
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| 297 | * @param int $quantity Item quantity. |
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| 298 | * @param float $amount Amount. |
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| 299 | * @param string $item_number Item number. |
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| 300 | */ |
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| 301 | protected function add_line_item( $item_name, $quantity = 1, $amount = 0.0, $item_number = '' ) { |
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| 302 | $index = ( count( $this->line_items ) / 4 ) + 1; |
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| 303 | |||
| 304 | $item = apply_filters( |
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| 305 | 'getpaid_paypal_line_item', |
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| 306 | array( |
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| 307 | '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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| 308 | 'quantity' => (int) $quantity, |
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| 309 | 'amount' => wpinv_sanitize_amount( (float) $amount, 2 ), |
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| 310 | 'item_number' => $item_number, |
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| 311 | ), |
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| 312 | $item_name, |
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| 313 | $quantity, |
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| 314 | $amount, |
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| 315 | $item_number |
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| 316 | ); |
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| 317 | |||
| 318 | $this->line_items[ 'item_name_' . $index ] = getpaid_limit_length( $item['item_name'], 127 ); |
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| 319 | $this->line_items[ 'quantity_' . $index ] = $item['quantity']; |
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| 320 | |||
| 321 | // The price or amount of the product, service, or contribution, not including shipping, handling, or tax. |
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| 322 | $this->line_items[ 'amount_' . $index ] = $item['amount']; |
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| 323 | $this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 ); |
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| 324 | } |
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| 325 | |||
| 326 | /** |
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| 327 | * If the default request with line items is too long, generate a new one with only one line item. |
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| 328 | * |
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| 329 | * https://support.microsoft.com/en-us/help/208427/maximum-url-length-is-2-083-characters-in-internet-explorer. |
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| 330 | * |
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| 331 | * @param WPInv_Invoice $invoice Invoice to be sent to Paypal. |
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| 332 | * @param array $paypal_args Arguments sent to Paypal in the request. |
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| 333 | * @return array |
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| 334 | */ |
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| 335 | protected function fix_request_length( $invoice, $paypal_args ) { |
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| 336 | $max_paypal_length = 2083; |
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| 337 | $query_candidate = http_build_query( $paypal_args, '', '&' ); |
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| 338 | |||
| 339 | if ( strlen( $this->endpoint . $query_candidate ) <= $max_paypal_length ) { |
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| 340 | return $paypal_args; |
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| 341 | } |
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| 342 | |||
| 343 | return apply_filters( |
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| 344 | 'getpaid_paypal_args', |
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| 345 | array_merge( |
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| 346 | $this->get_transaction_args( $invoice ), |
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| 347 | $this->get_line_item_args( $invoice, true ) |
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| 348 | ), |
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| 349 | $invoice |
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| 350 | ); |
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| 351 | |||
| 352 | } |
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| 353 | |||
| 354 | /** |
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| 355 | * Processes recurring invoices. |
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| 356 | * |
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| 357 | * @param array $paypal_args PayPal args. |
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| 358 | * @param WPInv_Invoice $invoice Invoice object. |
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| 359 | */ |
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| 360 | public function process_subscription( $paypal_args, $invoice ) { |
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| 464 | ); |
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| 465 | |||
| 466 | } |
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| 467 | |||
| 468 | /** |
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| 469 | * Processes ipns and marks payments as complete. |
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| 470 | * |
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| 471 | * @return void |
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| 472 | */ |
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| 473 | public function verify_ipn() { |
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| 474 | new GetPaid_Paypal_Gateway_IPN_Handler( $this ); |
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| 475 | } |
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| 476 | |||
| 477 | /** |
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| 478 | * Displays a notice on the checkout page if sandbox is enabled. |
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| 479 | */ |
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| 480 | public function sandbox_notice( $description, $gateway ) { |
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| 489 | |||
| 490 | } |
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| 493 |
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In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.