AyeCode /
invoicing
| Total Complexity | 53 |
| Total Lines | 427 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 1 | Features | 0 |
Complex classes like GetPaid_Paypal_Gateway_IPN_Handler 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_IPN_Handler, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class GetPaid_Paypal_Gateway_IPN_Handler { |
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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 | protected $id = 'paypal'; |
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| 21 | |||
| 22 | /** |
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| 23 | * Payment method object. |
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| 24 | * |
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| 25 | * @var GetPaid_Paypal_Gateway |
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| 26 | */ |
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| 27 | protected $gateway; |
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| 28 | |||
| 29 | /** |
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| 30 | * Class constructor. |
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| 31 | * |
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| 32 | * @param GetPaid_Paypal_Gateway $gateway |
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| 33 | */ |
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| 34 | public function __construct( $gateway ) { |
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| 35 | $this->gateway = $gateway; |
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| 36 | $this->verify_ipn(); |
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| 37 | } |
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| 38 | |||
| 39 | /** |
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| 40 | * Processes ipns and marks payments as complete. |
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| 41 | * |
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| 42 | * @return void |
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| 43 | */ |
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| 44 | public function verify_ipn() { |
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| 45 | |||
| 46 | wpinv_error_log( 'GetPaid PayPal IPN Handler' ); |
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| 47 | |||
| 48 | // Validate the IPN. |
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| 49 | if ( empty( $_POST ) || ! $this->validate_ipn() ) { |
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| 50 | wp_die( 'PayPal IPN Request Failure', 500 ); |
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| 51 | } |
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| 52 | |||
| 53 | // Process the IPN. |
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| 54 | $posted = wp_unslash( $_POST ); |
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| 55 | $invoice = $this->get_ipn_invoice( $posted ); |
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| 56 | |||
| 57 | // Abort if it was not paid by our gateway. |
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| 58 | if ( $this->id != $invoice->get_gateway() ) { |
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| 59 | wpinv_error_log( 'Aborting, Invoice was not paid via PayPal' ); |
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| 60 | wp_die( 'Invoice not paid via PayPal', 500 ); |
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| 61 | } |
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| 62 | |||
| 63 | $posted['payment_status'] = sanitize_key( strtolower( $posted['payment_status'] ) ); |
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| 64 | $posted['txn_type'] = sanitize_key( strtolower( $posted['txn_type'] ) ); |
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| 65 | |||
| 66 | wpinv_error_log( 'Payment status:' . $posted['payment_status'] ); |
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| 67 | wpinv_error_log( 'IPN Type:' . $posted['txn_type'] ); |
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| 68 | |||
| 69 | if ( $this->gateway->is_sandbox( $invoice ) ) { |
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| 70 | wpinv_error_log( $posted, 'Invoice was processed in sandbox hence logging the posted data' ); |
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| 71 | } |
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| 72 | |||
| 73 | if ( method_exists( $this, 'ipn_txn_' . $posted['txn_type'] ) ) { |
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| 74 | call_user_func( array( $this, 'ipn_txn_' . $posted['txn_type'] ), $invoice, $posted ); |
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| 75 | wpinv_error_log( 'Done processing IPN' ); |
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| 76 | wp_die( 'Processed', 200 ); |
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| 77 | } |
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| 78 | |||
| 79 | wpinv_error_log( 'Aborting, Unsupported IPN type:' . $posted['txn_type'] ); |
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| 80 | wp_die( 'Unsupported IPN type', 200 ); |
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| 81 | |||
| 82 | } |
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| 83 | |||
| 84 | /** |
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| 85 | * Retrieves IPN Invoice. |
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| 86 | * |
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| 87 | * @param array $posted |
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| 88 | * @return WPInv_Invoice |
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| 89 | */ |
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| 90 | protected function get_ipn_invoice( $posted ) { |
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| 106 | } |
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| 107 | |||
| 108 | /** |
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| 109 | * Check PayPal IPN validity. |
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| 110 | */ |
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| 111 | protected function validate_ipn() { |
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| 112 | |||
| 113 | wpinv_error_log( 'Validating PayPal IPN response' ); |
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| 114 | |||
| 115 | // Retrieve the associated invoice. |
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| 116 | $posted = wp_unslash( $_POST ); |
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| 117 | $invoice = $this->get_ipn_invoice( $posted ); |
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| 118 | |||
| 119 | // Validate the IPN. |
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| 120 | $posted['cmd'] = '_notify-validate'; |
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| 121 | |||
| 122 | // Send back post vars to paypal. |
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| 123 | $params = array( |
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| 124 | 'body' => $posted, |
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| 125 | 'timeout' => 60, |
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| 126 | 'httpversion' => '1.1', |
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| 127 | 'compress' => false, |
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| 128 | 'decompress' => false, |
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| 129 | 'user-agent' => 'GetPaid/' . WPINV_VERSION, |
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| 130 | ); |
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| 131 | |||
| 132 | // Post back to get a response. |
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| 133 | $response = wp_safe_remote_post( $this->gateway->is_sandbox( $invoice ) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr', $params ); |
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| 134 | |||
| 135 | // Check to see if the request was valid. |
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| 136 | if ( ! is_wp_error( $response ) && $response['response']['code'] < 300 && strstr( $response['body'], 'VERIFIED' ) ) { |
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| 137 | wpinv_error_log( $response['body'], 'Received valid response from PayPal IPN' ); |
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| 138 | return true; |
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| 139 | } |
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| 140 | |||
| 141 | if ( is_wp_error( $response ) ) { |
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| 142 | wpinv_error_log( $response->get_error_message(), 'Received invalid response from PayPal IPN' ); |
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| 143 | return false; |
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| 144 | } |
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| 145 | |||
| 146 | wpinv_error_log( $response['body'], 'Received invalid response from PayPal IPN' ); |
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| 147 | return false; |
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| 148 | |||
| 149 | } |
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| 150 | |||
| 151 | /** |
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| 152 | * Check currency from IPN matches the invoice. |
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| 153 | * |
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| 154 | * @param WPInv_Invoice $invoice Invoice object. |
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| 155 | * @param string $currency currency to validate. |
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| 156 | */ |
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| 157 | protected function validate_ipn_currency( $invoice, $currency ) { |
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| 158 | |||
| 159 | if ( strtolower( $invoice->get_currency() ) !== strtolower( $currency ) ) { |
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| 160 | |||
| 161 | /* translators: %s: currency code. */ |
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| 162 | $invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal currencies do not match (code %s).', 'invoicing' ), $currency ) ); |
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| 163 | |||
| 164 | wpinv_error_log( "Currencies do not match: {$currency} instead of {$invoice->get_currency()}", 'IPN Error', __FILE__, __LINE__, true ); |
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| 165 | } |
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| 166 | |||
| 167 | wpinv_error_log( $currency, 'Validated IPN Currency' ); |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * Check payment amount from IPN matches the invoice. |
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| 172 | * |
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| 173 | * @param WPInv_Invoice $invoice Invoice object. |
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| 174 | * @param float $amount amount to validate. |
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| 175 | */ |
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| 176 | protected function validate_ipn_amount( $invoice, $amount ) { |
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| 177 | if ( number_format( $invoice->get_total(), 2, '.', '' ) !== number_format( $amount, 2, '.', '' ) ) { |
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| 178 | |||
| 179 | /* translators: %s: Amount. */ |
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| 180 | $invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal amounts do not match (gross %s).', 'invoicing' ), $amount ) ); |
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| 181 | |||
| 182 | wpinv_error_log( "Currencies do not match: {$amount} instead of {$invoice->get_total()}", 'IPN Error', __FILE__, __LINE__, true ); |
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| 183 | } |
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| 184 | |||
| 185 | wpinv_error_log( $amount, 'Validated IPN Amount' ); |
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| 186 | } |
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| 187 | |||
| 188 | /** |
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| 189 | * Verify receiver email from PayPal. |
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| 190 | * |
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| 191 | * @param WPInv_Invoice $invoice Invoice object. |
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| 192 | * @param string $receiver_email Email to validate. |
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| 193 | */ |
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| 194 | protected function validate_ipn_receiver_email( $invoice, $receiver_email ) { |
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| 195 | $paypal_email = wpinv_get_option( 'paypal_email' ); |
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| 196 | |||
| 197 | if ( strcasecmp( trim( $receiver_email ), trim( $paypal_email ) ) !== 0 ) { |
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|
Bug
introduced
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| 198 | wpinv_record_gateway_error( 'IPN Error', "IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}" ); |
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| 199 | |||
| 200 | /* translators: %s: email address . */ |
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| 201 | $invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal IPN response from a different email address (%s).', 'invoicing' ), $receiver_email ) ); |
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| 202 | |||
| 203 | wpinv_error_log( "IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}", 'IPN Error', __FILE__, __LINE__, true ); |
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| 204 | } |
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| 205 | |||
| 206 | wpinv_error_log( 'Validated PayPal Email' ); |
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| 207 | } |
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| 208 | |||
| 209 | /** |
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| 210 | * Handles one time payments. |
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| 211 | * |
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| 212 | * @param WPInv_Invoice $invoice Invoice object. |
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| 213 | * @param array $posted Posted data. |
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| 214 | */ |
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| 215 | protected function ipn_txn_web_accept( $invoice, $posted ) { |
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| 216 | |||
| 217 | // Collect payment details |
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| 218 | $payment_status = strtolower( $posted['payment_status'] ); |
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| 219 | $business_email = isset( $posted['business'] ) && is_email( $posted['business'] ) ? trim( $posted['business'] ) : trim( $posted['receiver_email'] ); |
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| 220 | |||
| 221 | $this->validate_ipn_receiver_email( $invoice, $business_email ); |
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| 222 | $this->validate_ipn_currency( $invoice, $posted['mc_currency'] ); |
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| 223 | |||
| 224 | // Update the transaction id. |
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| 225 | if ( ! empty( $posted['txn_id'] ) ) { |
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| 226 | $invoice->set_transaction_id( wpinv_clean( $posted['txn_id'] ) ); |
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| 227 | $invoice->save(); |
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| 228 | } |
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| 229 | |||
| 230 | // Process a refund. |
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| 231 | if ( $payment_status == 'refunded' || $payment_status == 'reversed' ) { |
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| 232 | |||
| 233 | update_post_meta( $invoice->get_id(), 'refunded_remotely', 1 ); |
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| 234 | |||
| 235 | if ( ! $invoice->is_refunded() ) { |
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| 236 | $invoice->update_status( 'wpi-refunded', $posted['reason_code'] ); |
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| 237 | } |
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| 238 | |||
| 239 | return wpinv_error_log( $posted['reason_code'] ); |
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| 240 | } |
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| 241 | |||
| 242 | // Process payments. |
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| 243 | if ( $payment_status == 'completed' ) { |
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| 244 | |||
| 245 | if ( $invoice->is_paid() && 'wpi_processing' != $invoice->get_status() ) { |
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| 246 | return wpinv_error_log( 'Aborting, Invoice #' . $invoice->get_number() . ' is already paid.' ); |
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| 247 | } |
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| 248 | |||
| 249 | $this->validate_ipn_amount( $invoice, $posted['mc_gross'] ); |
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| 250 | |||
| 251 | $note = ''; |
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| 252 | |||
| 253 | if ( ! empty( $posted['mc_fee'] ) ) { |
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| 254 | $note = sprintf( __( 'PayPal Transaction Fee %.', 'invoicing' ), sanitize_text_field( $posted['mc_fee'] ) ); |
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| 255 | } |
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| 256 | |||
| 257 | if ( ! empty( $posted['payer_status'] ) ) { |
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| 258 | $note = ' ' . sprintf( __( 'Buyer status %.', 'invoicing' ), sanitize_text_field( $posted['payer_status'] ) ); |
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| 259 | } |
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| 260 | |||
| 261 | $invoice->mark_paid( ( ! empty( $posted['txn_id'] ) ? sanitize_text_field( $posted['txn_id'] ) : '' ), trim( $note ) ); |
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| 262 | return wpinv_error_log( 'Invoice marked as paid.' ); |
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| 263 | |||
| 264 | } |
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| 265 | |||
| 266 | // Pending payments. |
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| 267 | if ( $payment_status == 'pending' ) { |
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| 268 | |||
| 269 | /* translators: %s: pending reason. */ |
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| 270 | $invoice->update_status( 'wpi-onhold', sprintf( __( 'Payment pending (%s).', 'invoicing' ), $posted['pending_reason'] ) ); |
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| 271 | |||
| 272 | return wpinv_error_log( 'Invoice marked as "payment held".' ); |
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| 273 | } |
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| 274 | |||
| 275 | /* translators: %s: payment status. */ |
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| 276 | $invoice->update_status( 'wpi-failed', sprintf( __( 'Payment %s via IPN.', 'invoicing' ), sanitize_text_field( $posted['payment_status'] ) ) ); |
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| 277 | |||
| 278 | } |
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| 279 | |||
| 280 | /** |
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| 281 | * Handles one time payments. |
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| 282 | * |
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| 283 | * @param WPInv_Invoice $invoice Invoice object. |
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| 284 | * @param array $posted Posted data. |
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| 285 | */ |
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| 286 | protected function ipn_txn_cart( $invoice, $posted ) { |
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| 288 | } |
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| 289 | |||
| 290 | /** |
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| 291 | * Handles subscription sign ups. |
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| 292 | * |
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| 293 | * @param WPInv_Invoice $invoice Invoice object. |
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| 294 | * @param array $posted Posted data. |
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| 295 | */ |
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| 296 | protected function ipn_txn_subscr_signup( $invoice, $posted ) { |
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| 297 | |||
| 298 | wpinv_error_log( $posted, 'Processing subscription signup' ); |
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| 299 | |||
| 300 | // Make sure the invoice has a subscription. |
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| 301 | $subscription = getpaid_get_invoice_subscription( $invoice ); |
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| 302 | |||
| 303 | if ( empty( $subscription ) ) { |
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| 304 | return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found' ); |
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| 305 | } |
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| 306 | |||
| 307 | // Validate the IPN. |
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| 308 | $business_email = isset( $posted['business'] ) && is_email( $posted['business'] ) ? trim( $posted['business'] ) : trim( $posted['receiver_email'] ); |
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| 309 | $this->validate_ipn_receiver_email( $invoice, $business_email ); |
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| 310 | $this->validate_ipn_currency( $invoice, $posted['mc_currency'] ); |
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| 311 | $this->validate_ipn_amount( $invoice, $posted['mc_gross'] ); |
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| 312 | |||
| 313 | // Activate the subscription. |
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| 314 | $duration = strtotime( $subscription->get_expiration() ) - strtotime( $subscription->get_date_created() ); |
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| 315 | $subscription->set_date_created( current_time( 'mysql' ) ); |
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| 316 | $subscription->set_expiration( date( 'Y-m-d H:i:s', ( current_time( 'timestamp' ) + $duration ) ) ); |
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| 317 | $subscription->set_profile_id( sanitize_text_field( $posted['subscr_id'] ) ); |
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| 318 | $subscription->activate(); |
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| 319 | |||
| 320 | // Set the transaction id. |
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| 321 | if ( ! empty( $posted['txn_id'] ) ) { |
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| 322 | $invoice->set_transaction_id( $posted['txn_id'] ); |
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| 323 | } |
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| 324 | |||
| 325 | // Update the payment status. |
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| 326 | $invoice->mark_paid(); |
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| 327 | |||
| 328 | $invoice->add_note( sprintf( __( 'PayPal Subscription ID: %s', 'invoicing' ) , $posted['subscr_id'] ), false, false, true ); |
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| 329 | |||
| 330 | wpinv_error_log( 'Subscription started.' ); |
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| 331 | } |
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| 332 | |||
| 333 | /** |
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| 334 | * Handles subscription renewals. |
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| 335 | * |
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| 336 | * @param WPInv_Invoice $invoice Invoice object. |
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| 337 | * @param array $posted Posted data. |
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| 338 | */ |
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| 339 | protected function ipn_txn_subscr_payment( $invoice, $posted ) { |
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| 340 | |||
| 341 | // Make sure the invoice has a subscription. |
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| 342 | $subscription = wpinv_get_subscription( $invoice ); |
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| 343 | |||
| 344 | if ( empty( $subscription ) ) { |
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| 345 | return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found' ); |
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| 346 | } |
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| 347 | |||
| 348 | // Abort if this is the first payment. |
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| 349 | if ( date( 'Ynd', $subscription->get_date_created() ) == date( 'Ynd', strtotime( $posted['payment_date'] ) ) ) { |
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| 350 | $invoice->set_transaction_id( sanitize_text_field( $posted['txn_id'] ) ); |
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| 351 | $invoice->save(); |
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| 352 | return; |
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| 353 | } |
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| 354 | |||
| 355 | wpinv_error_log( 'Processing subscription renewal payment for the invoice ' . $invoice->get_id() ); |
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| 356 | |||
| 357 | // Abort if the payment is already recorded. |
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| 358 | if ( wpinv_get_id_by_transaction_id( $posted['txn_id'] ) ) { |
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| 359 | return wpinv_error_log( 'Aborting, Transaction ' . $posted['txn_id'] .' has already been processed' ); |
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| 360 | } |
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| 361 | |||
| 362 | $args = array( |
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| 363 | 'transaction_id' => $posted['txn_id'], |
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| 364 | 'gateway' => $this->id, |
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| 365 | ); |
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| 366 | |||
| 367 | $invoice = wpinv_get_invoice( $subscription->add_payment( $args ) ); |
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| 368 | |||
| 369 | if ( empty( $invoice ) ) { |
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| 370 | return; |
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| 371 | } |
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| 372 | |||
| 373 | $invoice->add_note( wp_sprintf( __( 'PayPal Transaction ID: %s', 'invoicing' ) , $posted['txn_id'] ), false, false, true ); |
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| 374 | $invoice->add_note( wp_sprintf( __( 'PayPal Subscription ID: %s', 'invoicing' ) , $posted['subscr_id'] ), false, false, true ); |
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| 375 | |||
| 376 | $subscription->renew(); |
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| 377 | wpinv_error_log( 'Subscription renewed.' ); |
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| 378 | |||
| 379 | } |
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| 380 | |||
| 381 | /** |
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| 382 | * Handles subscription cancelations. |
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| 383 | * |
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| 384 | * @param WPInv_Invoice $invoice Invoice object. |
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| 385 | */ |
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| 386 | protected function ipn_txn_subscr_cancel( $invoice ) { |
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| 387 | |||
| 388 | // Make sure the invoice has a subscription. |
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| 389 | $subscription = wpinv_get_subscription( $invoice ); |
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| 390 | |||
| 391 | if ( empty( $subscription ) ) { |
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| 392 | return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found' ); |
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| 393 | } |
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| 394 | |||
| 395 | wpinv_error_log( 'Processing subscription cancellation for the invoice ' . $invoice->get_id() ); |
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| 396 | $subscription->cancel(); |
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| 397 | wpinv_error_log( 'Subscription cancelled.' ); |
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| 398 | |||
| 399 | } |
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| 400 | |||
| 401 | /** |
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| 402 | * Handles subscription completions. |
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| 403 | * |
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| 404 | * @param WPInv_Invoice $invoice Invoice object. |
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| 405 | * @param array $posted Posted data. |
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| 406 | */ |
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| 407 | protected function ipn_txn_subscr_eot( $invoice ) { |
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| 408 | |||
| 409 | // Make sure the invoice has a subscription. |
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| 410 | $subscription = wpinv_get_subscription( $invoice ); |
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| 411 | |||
| 412 | if ( empty( $subscription ) ) { |
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| 413 | return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found' ); |
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| 414 | } |
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| 415 | |||
| 416 | wpinv_error_log( 'Processing subscription end of life for the invoice ' . $invoice->get_id() ); |
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| 417 | $subscription->complete(); |
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| 418 | wpinv_error_log( 'Subscription completed.' ); |
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| 419 | |||
| 420 | } |
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| 421 | |||
| 422 | /** |
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| 423 | * Handles subscription fails. |
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| 424 | * |
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| 425 | * @param WPInv_Invoice $invoice Invoice object. |
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| 426 | * @param array $posted Posted data. |
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| 427 | */ |
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| 428 | protected function ipn_txn_subscr_failed( $invoice ) { |
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| 440 | |||
| 441 | } |
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| 442 | |||
| 443 | } |
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| 444 |
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