init

wp-content/plugins/woocommerce-payments/includes/constants/class-base-constant.php

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+<?php
+/**
+ * Class Base_Constant
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+use ReflectionClass;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+
+/**
+ * Base constant class to hold common logic for all constants.
+ */
+abstract class Base_Constant implements \JsonSerializable {
+
+	/**
+	 * Enum value
+	 *
+	 * @var mixed
+	 */
+	protected $value;
+
+	/**
+	 * Static objects cache.
+	 *
+	 * @var array
+	 */
+	protected static $object_cache = [];
+
+	/**
+	 * Class constructor. Keep it private to only allow initializing from __callStatic()
+	 *
+	 * @param string $value Constant from class.
+	 * @throws \InvalidArgumentException
+	 */
+	private function __construct( string $value ) {
+		if ( $value instanceof static ) {
+			$value = $value->get_value();
+		} elseif ( ! defined( static::class . "::$value" ) ) {
+				throw new \InvalidArgumentException( "Constant with name '$value' does not exist." );
+		}
+
+		$this->value = $value;
+	}
+
+	/**
+	 * Get enum class value.
+	 *
+	 * @return mixed
+	 */
+	public function get_value() {
+		return $this->value;
+	}
+
+	/**
+	 * Compare to enums.
+	 *
+	 * @param mixed $variable Constant object to compare.
+	 *
+	 * @return bool
+	 */
+	final public function equals( $variable = null ): bool {
+		return $this === $variable;
+	}
+
+	/**
+	 * Find constant in class by value.
+	 *
+	 * @param string $value Value to find.
+	 *
+	 * @return int|string
+	 * @throws \InvalidArgumentException
+	 */
+	public static function search( string $value ) {
+		$class = new ReflectionClass( static::class );
+		$key   = array_search( $value, $class->getConstants(), true );
+		if ( false === $key ) {
+			throw new \InvalidArgumentException( "Constant with value '$value' does not exist." );
+		}
+
+		return $key;
+	}
+
+	/**
+	 * Used to created enum from constant names like CLASS::ConstantName().
+	 *
+	 * @param string $name Name of property or function.
+	 * @param array  $arguments Arguments of static call.
+	 *
+	 * @return static
+	 * @throws \InvalidArgumentException
+	 */
+	public static function __callStatic( $name, $arguments ) {
+		if ( ! isset( static::$object_cache[ $name ] ) ) {
+			// Instantiating constants by class name using the 'new static($name)' approach is integral to this method's functionality.
+			// @phpstan-ignore-next-line.
+			static::$object_cache[ $name ] = new static( $name );
+		}
+		return static::$object_cache[ $name ];
+	}
+
+	/**
+	 * Get real enum value.
+	 *
+	 * @return mixed|string
+	 */
+	public function __toString() {
+		return constant( \get_class( $this ) . '::' . $this->get_value() );
+	}
+
+	/**
+	 * Specify the value which should be serialized to JSON.
+	 *
+	 * @return mixed|string
+	 */
+	#[\ReturnTypeWillChange]
+	public function jsonSerialize() {
+		return $this->__toString();
+	}
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-country-code.php

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+<?php
+/**
+ * Class Country_Code
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Country Code constants
+ *
+ * @psalm-immutable
+ */
+class Country_Code extends Base_Constant {
+	const AFGHANISTAN                      = 'AF';
+	const ALAND_ISLANDS                    = 'AX';
+	const ALBANIA                          = 'AL';
+	const ALGERIA                          = 'DZ';
+	const AMERICAN_SAMOA                   = 'AS';
+	const ANDORRA                          = 'AD';
+	const ANGOLA                           = 'AO';
+	const ANGUILLA                         = 'AI';
+	const ANTARCTICA                       = 'AQ';
+	const ANTIGUA_AND_BARBUDA              = 'AG';
+	const ARGENTINA                        = 'AR';
+	const ARMENIA                          = 'AM';
+	const ARUBA                            = 'AW';
+	const AUSTRALIA                        = 'AU';
+	const AUSTRIA                          = 'AT';
+	const AZERBAIJAN                       = 'AZ';
+	const BAHAMAS                          = 'BS';
+	const BAHRAIN                          = 'BH';
+	const BANGLADESH                       = 'BD';
+	const BARBADOS                         = 'BB';
+	const BELARUS                          = 'BY';
+	const BELGIUM                          = 'BE';
+	const BELIZE                           = 'BZ';
+	const BENIN                            = 'BJ';
+	const BERMUDA                          = 'BM';
+	const BHUTAN                           = 'BT';
+	const BOLIVIA                          = 'BO';
+	const BOSNIA_AND_HERZEGOVINA           = 'BA';
+	const BOTSWANA                         = 'BW';
+	const BOUVET_ISLAND                    = 'BV';
+	const BRAZIL                           = 'BR';
+	const BRITISH_INDIAN_OCEAN_TERRITORY   = 'IO';
+	const BRUNEI                           = 'BN';
+	const BULGARIA                         = 'BG';
+	const BURKINA_FASO                     = 'BF';
+	const BURUNDI                          = 'BI';
+	const CABO_VERDE                       = 'CV';
+	const CAMBODIA                         = 'KH';
+	const CAMEROON                         = 'CM';
+	const CANADA                           = 'CA';
+	const CARIBBEAN_NETHERLANDS            = 'BQ';
+	const CENTRAL_AFRICAN_REPUBLIC         = 'CF';
+	const CHAD                             = 'TD';
+	const CHILE                            = 'CL';
+	const CHINA                            = 'CN';
+	const COCOS_KEELING_ISLANDS            = 'CC';
+	const COLOMBIA                         = 'CO';
+	const COOK_ISLANDS                     = 'CK';
+	const COMOROS                          = 'KM';
+	const CONGO                            = 'CG';
+	const COSTA_RICA                       = 'CR';
+	const CROATIA                          = 'HR';
+	const CUBA                             = 'CU';
+	const CYPRUS                           = 'CY';
+	const CZECHIA                          = 'CZ';
+	const DEMOCRATIC_REPUBLIC_OF_THE_CONGO = 'CD';
+	const DENMARK                          = 'DK';
+	const DJIBOUTI                         = 'DJ';
+	const DOMINICA                         = 'DM';
+	const DOMINICAN_REPUBLIC               = 'DO';
+	const EAST_TIMOR                       = 'TL';
+	const ECUADOR                          = 'EC';
+	const EGYPT                            = 'EG';
+	const EL_SALVADOR                      = 'SV';
+	const EQUATORIAL_GUINEA                = 'GQ';
+	const ERITREA                          = 'ER';
+	const ESTONIA                          = 'EE';
+	const ESWATINI                         = 'SZ';
+	const ETHIOPIA                         = 'ET';
+	const FIJI                             = 'FJ';
+	const FINLAND                          = 'FI';
+	const FRANCE                           = 'FR';
+	const GABON                            = 'GA';
+	const GAMBIA                           = 'GM';
+	const GEORGIA                          = 'GE';
+	const GERMANY                          = 'DE';
+	const GIBRALTAR                        = 'GI';
+	const GHANA                            = 'GH';
+	const GREECE                           = 'GR';
+	const GRENADA                          = 'GD';
+	const GUATEMALA                        = 'GT';
+	const GUINEA                           = 'GN';
+	const GUINEA_BISSAU                    = 'GW';
+	const GUYANA                           = 'GY';
+	const HAITI                            = 'HT';
+	const HONDURAS                         = 'HN';
+	const HONG_KONG                        = 'HK';
+	const HUNGARY                          = 'HU';
+	const ICELAND                          = 'IS';
+	const INDIA                            = 'IN';
+	const INDONESIA                        = 'ID';
+	const IRAN                             = 'IR';
+	const IRAQ                             = 'IQ';
+	const IRELAND                          = 'IE';
+	const ISRAEL                           = 'IL';
+	const ITALY                            = 'IT';
+	const IVORY_COAST                      = 'CI';
+	const JAMAICA                          = 'JM';
+	const JAPAN                            = 'JP';
+	const JORDAN                           = 'JO';
+	const KAZAKHSTAN                       = 'KZ';
+	const KENYA                            = 'KE';
+	const KIRIBATI                         = 'KI';
+	const KOSOVO                           = 'XK';
+	const KUWAIT                           = 'KW';
+	const KYRGYZSTAN                       = 'KG';
+	const LAOS                             = 'LA';
+	const LATVIA                           = 'LV';
+	const LEBANON                          = 'LB';
+	const LESOTHO                          = 'LS';
+	const LIBERIA                          = 'LR';
+	const LIBYA                            = 'LY';
+	const LIECHTENSTEIN                    = 'LI';
+	const LITHUANIA                        = 'LT';
+	const LUXEMBOURG                       = 'LU';
+	const MADAGASCAR                       = 'MG';
+	const MALAWI                           = 'MW';
+	const MALAYSIA                         = 'MY';
+	const MALDIVES                         = 'MV';
+	const MALI                             = 'ML';
+	const MALTA                            = 'MT';
+	const MARSHALL_ISLANDS                 = 'MH';
+	const MAURITANIA                       = 'MR';
+	const MAURITIUS                        = 'MU';
+	const MEXICO                           = 'MX';
+	const MICRONESIA                       = 'FM';
+	const MOLDOVA                          = 'MD';
+	const MONACO                           = 'MC';
+	const MONGOLIA                         = 'MN';
+	const MONTENEGRO                       = 'ME';
+	const MOROCCO                          = 'MA';
+	const MOZAMBIQUE                       = 'MZ';
+	const MYANMAR                          = 'MM';
+	const NAMIBIA                          = 'NA';
+	const NAURU                            = 'NR';
+	const NEPAL                            = 'NP';
+	const NETHERLANDS                      = 'NL';
+	const NEW_ZEALAND                      = 'NZ';
+	const NICARAGUA                        = 'NI';
+	const NIGER                            = 'NE';
+	const NIGERIA                          = 'NG';
+	const NORTH_KOREA                      = 'KP';
+	const NORTH_MACEDONIA                  = 'MK';
+	const NORWAY                           = 'NO';
+	const OMAN                             = 'OM';
+	const PAKISTAN                         = 'PK';
+	const PALAU                            = 'PW';
+	const PALESTINE                        = 'PS';
+	const PANAMA                           = 'PA';
+	const PAPUA_NEW_GUINEA                 = 'PG';
+	const PARAGUAY                         = 'PY';
+	const PERU                             = 'PE';
+	const PHILIPPINES                      = 'PH';
+	const POLAND                           = 'PL';
+	const PORTUGAL                         = 'PT';
+	const PUERTO_RICO                      = 'PR';
+	const QATAR                            = 'QA';
+	const ROMANIA                          = 'RO';
+	const RUSSIA                           = 'RU';
+	const RWANDA                           = 'RW';
+	const SAINT_BARTHELEMY                 = 'BL';
+	const SAINT_KITTS_AND_NEVIS            = 'KN';
+	const SAINT_LUCIA                      = 'LC';
+	const SAINT_VINCENT_AND_THE_GRENADINES = 'VC';
+	const SAMOA                            = 'WS';
+	const SAN_MARINO                       = 'SM';
+	const SAO_TOME_AND_PRINCIPE            = 'ST';
+	const SAUDI_ARABIA                     = 'SA';
+	const SENEGAL                          = 'SN';
+	const SERBIA                           = 'RS';
+	const SEYCHELLES                       = 'SC';
+	const SIERRA_LEONE                     = 'SL';
+	const SINGAPORE                        = 'SG';
+	const SLOVAKIA                         = 'SK';
+	const SLOVENIA                         = 'SI';
+	const SOLOMON_ISLANDS                  = 'SB';
+	const SOMALIA                          = 'SO';
+	const SOUTH_AFRICA                     = 'ZA';
+	const SOUTH_KOREA                      = 'KR';
+	const SOUTH_SUDAN                      = 'SS';
+	const SPAIN                            = 'ES';
+	const SRI_LANKA                        = 'LK';
+	const SUDAN                            = 'SD';
+	const SURINAME                         = 'SR';
+	const SWEDEN                           = 'SE';
+	const SWITZERLAND                      = 'CH';
+	const SYRIA                            = 'SY';
+	const TAIWAN                           = 'TW';
+	const TAJIKISTAN                       = 'TJ';
+	const TANZANIA                         = 'TZ';
+	const THAILAND                         = 'TH';
+	const TOGO                             = 'TG';
+	const TONGA                            = 'TO';
+	const TRINIDAD_AND_TOBAGO              = 'TT';
+	const TUNISIA                          = 'TN';
+	const TURKEY                           = 'TR';
+	const TURKMENISTAN                     = 'TM';
+	const TUVALU                           = 'TV';
+	const UGANDA                           = 'UG';
+	const UKRAINE                          = 'UA';
+	const UNITED_ARAB_EMIRATES             = 'AE';
+	const UNITED_KINGDOM                   = 'GB';
+	const UNITED_STATES                    = 'US';
+	const URUGUAY                          = 'UY';
+	const UZBEKISTAN                       = 'UZ';
+	const VANUATU                          = 'VU';
+	const VATICAN_CITY                     = 'VA';
+	const VENEZUELA                        = 'VE';
+	const VIETNAM                          = 'VN';
+	const YEMEN                            = 'YE';
+	const ZAMBIA                           = 'ZM';
+	const ZIMBABWE                         = 'ZW';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-country-test-cards.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Class Country_Test_Cards
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+
+/**
+ * Class handling country-specific test card numbers for WooPayments
+ */
+class Country_Test_Cards extends Base_Constant {
+	/**
+	 * Map of country codes to their test card numbers
+	 * Source: https://docs.stripe.com/testing?testing-method=card-numbers#international-cards
+	 *
+	 * @var array
+	 */
+	private static $country_test_cards = [
+		Country_Code::UNITED_STATES        => '4242 4242 4242 4242',
+		Country_Code::ARGENTINA            => '4000 0003 2000 0021',
+		Country_Code::BRAZIL               => '4000 0007 6000 0002',
+		Country_Code::CANADA               => '4000 0012 4000 0000',
+		Country_Code::CHILE                => '4000 0015 2000 0001',
+		Country_Code::COLOMBIA             => '4000 0017 0000 0003',
+		Country_Code::COSTA_RICA           => '4000 0018 8000 0005',
+		Country_Code::ECUADOR              => '4000 0021 8000 0000',
+		Country_Code::MEXICO               => '4000 0048 4000 8001',
+		Country_Code::PANAMA               => '4000 0059 1000 0000',
+		Country_Code::PARAGUAY             => '4000 0060 0000 0066',
+		Country_Code::PERU                 => '4000 0060 4000 0068',
+		Country_Code::URUGUAY              => '4000 0085 8000 0003',
+		Country_Code::UNITED_ARAB_EMIRATES => '4000 0078 4000 0001',
+		Country_Code::AUSTRIA              => '4000 0004 0000 0008',
+		Country_Code::BELGIUM              => '4000 0005 6000 0004',
+		Country_Code::BULGARIA             => '4000 0010 0000 0000',
+		Country_Code::BELARUS              => '4000 0011 2000 0005',
+		Country_Code::CROATIA              => '4000 0019 1000 0009',
+		Country_Code::CYPRUS               => '4000 0019 6000 0008',
+		Country_Code::CZECHIA              => '4000 0020 3000 0002',
+		Country_Code::DENMARK              => '4000 0020 8000 0001',
+		Country_Code::ESTONIA              => '4000 0023 3000 0009',
+		Country_Code::FINLAND              => '4000 0024 6000 0001',
+		Country_Code::FRANCE               => '4000 0025 0000 0003',
+		Country_Code::GERMANY              => '4000 0027 6000 0016',
+		Country_Code::GIBRALTAR            => '4000 0029 2000 0005',
+		Country_Code::GREECE               => '4000 0030 0000 0030',
+		Country_Code::HUNGARY              => '4000 0034 8000 0005',
+		Country_Code::IRELAND              => '4000 0037 2000 0005',
+		Country_Code::ITALY                => '4000 0038 0000 0008',
+		Country_Code::LATVIA               => '4000 0042 8000 0005',
+		Country_Code::LIECHTENSTEIN        => '4000 0043 8000 0004',
+		Country_Code::LITHUANIA            => '4000 0044 0000 0000',
+		Country_Code::LUXEMBOURG           => '4000 0044 2000 0006',
+		Country_Code::MALTA                => '4000 0047 0000 0007',
+		Country_Code::NETHERLANDS          => '4000 0052 8000 0002',
+		Country_Code::NORWAY               => '4000 0057 8000 0007',
+		Country_Code::POLAND               => '4000 0061 6000 0005',
+		Country_Code::PORTUGAL             => '4000 0062 0000 0007',
+		Country_Code::ROMANIA              => '4000 0064 2000 0001',
+		Country_Code::SAUDI_ARABIA         => '4000 0068 2000 0007',
+		Country_Code::SLOVENIA             => '4000 0070 5000 0006',
+		Country_Code::SLOVAKIA             => '4000 0070 3000 0001',
+		Country_Code::SPAIN                => '4000 0072 4000 0007',
+		Country_Code::SWEDEN               => '4000 0075 2000 0008',
+		Country_Code::SWITZERLAND          => '4000 0075 6000 0009',
+		Country_Code::UNITED_KINGDOM       => '4000 0082 6000 0000',
+		Country_Code::AUSTRALIA            => '4000 0003 6000 0006',
+		Country_Code::CHINA                => '4000 0015 6000 0002',
+		Country_Code::HONG_KONG            => '4000 0034 4000 0004',
+		Country_Code::INDIA                => '4000 0035 6000 0008',
+		Country_Code::JAPAN                => '4000 0039 2000 0003',
+		Country_Code::MALAYSIA             => '4000 0045 8000 0002',
+		Country_Code::NEW_ZEALAND          => '4000 0055 4000 0008',
+		Country_Code::SINGAPORE            => '4000 0070 2000 0003',
+		Country_Code::TAIWAN               => '4000 0015 8000 0008',
+		Country_Code::THAILAND             => '4000 0076 4000 0003',
+	];
+
+	/**
+	 * Get test card number for a specific country.
+	 *
+	 * @param string $country_code Two-letter country code.
+	 * @return string Test card number
+	 */
+	public static function get_test_card_for_country( string $country_code ) {
+		return self::$country_test_cards[ $country_code ] ?? self::$country_test_cards[ Country_Code::UNITED_STATES ];
+	}
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-currency-code.php

@@ -0,0 +1,157 @@
+<?php
+/**
+ * Class Currency_Code
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Currency Code constants
+ *
+ * @psalm-immutale
+ */
+class Currency_Code extends Base_Constant {
+	const UNITED_STATES_DOLLAR                    = 'USD'; // United States Dollar.
+	const UNITED_ARAB_EMIRATES_DIRHAM             = 'AED'; // United Arab Emirates dirham.
+	const AFGHAN_AFGHANI                          = 'AFN'; // Afghan afghani.
+	const ALBANIAN_LEK                            = 'ALL'; // Albanian lek.
+	const ARMENIAN_DRAM                           = 'AMD'; // Armenian dram.
+	const NETHERLANDS_ANTILLEAN_GUILDER           = 'ANG'; // Netherlands Antillean guilder.
+	const ANGOLAN_KWANZA                          = 'AOA'; // Angolan kwanza.
+	const ARGENTINE_PESO                          = 'ARS'; // Argentine peso.
+	const AUSTRALIAN_DOLLAR                       = 'AUD'; // Australian dollar.
+	const ARUBAN_FLORIN                           = 'AWG'; // Aruban florin.
+	const AZERBAIJANI_MANAT                       = 'AZN'; // Azerbaijani manat.
+	const BOSNIA_AND_HERZEGOVINA_CONVERTIBLE_MARK = 'BAM'; // Bosnia and Herzegovina convertible mark.
+	const BARBADOS_DOLLAR                         = 'BBD'; // Barbados dollar.
+	const BANGLADESHI_TAKA                        = 'BDT'; // Bangladeshi taka.
+	const BULGARIAN_LEV                           = 'BGN'; // Bulgarian lev.
+	const BURUNDIAN_FRANC                         = 'BIF'; // Burundian franc.
+	const BERMUDIAN_DOLLAR                        = 'BMD'; // Bermudian dollar.
+	const BRUNEI_DOLLAR                           = 'BND'; // Brunei dollar.
+	const BOLIVIANO                               = 'BOB'; // Boliviano.
+	const BRAZILIAN_REAL                          = 'BRL'; // Brazilian real.
+	const BAHAMIAN_DOLLAR                         = 'BSD'; // Bahamian dollar.
+	const BOTSWANA_PULA                           = 'BWP'; // Botswana pula.
+	const NEW_BELARUSIAN_RUBLE                    = 'BYN'; // New Belarusian ruble.
+	const BELIZE_DOLLAR                           = 'BZD'; // Belize dollar.
+	const CANADIAN_DOLLAR                         = 'CAD'; // Canadian dollar.
+	const CONGOLESE_FRANC                         = 'CDF'; // Congolese franc.
+	const SWISS_FRANC                             = 'CHF'; // Swiss franc.
+	const CHILEAN_PESO                            = 'CLP'; // Chilean peso.
+	const CHINESE_YUAN                            = 'CNY'; // Renminbi (Chinese yuan).
+	const COLOMBIAN_PESO                          = 'COP'; // Colombian peso.
+	const COSTA_RICAN_COLON                       = 'CRC'; // Costa Rican colon.
+	const CAPE_VERDE_ESCUDO                       = 'CVE'; // Cape Verde escudo.
+	const CZECH_KORUNA                            = 'CZK'; // Czech koruna.
+	const DJIBOUTIAN_FRANC                        = 'DJF'; // Djiboutian franc.
+	const DANISH_KRONE                            = 'DKK'; // Danish krone.
+	const DOMINICAN_PESO                          = 'DOP'; // Dominican peso.
+	const ALGERIAN_DINAR                          = 'DZD'; // Algerian dinar.
+	const EGYPTIAN_POUND                          = 'EGP'; // Egyptian pound.
+	const ETHIOPIAN_BIRR                          = 'ETB'; // Ethiopian birr.
+	const EURO                                    = 'EUR'; // Euro.
+	const FIJI_DOLLAR                             = 'FJD'; // Fiji dollar.
+	const FALKLAND_ISLANDS_POUND                  = 'FKP'; // Falkland Islands pound.
+	const POUND_STERLING                          = 'GBP'; // Pound sterling.
+	const GEORGIAN_LARI                           = 'GEL'; // Georgian lari.
+	const GIBRALTAR_POUND                         = 'GIP'; // Gibraltar pound.
+	const GAMBIAN_DALASI                          = 'GMD'; // Gambian dalasi.
+	const GUINEAN_FRANC                           = 'GNF'; // Guinean franc.
+	const GUATEMALAN_QUETZAL                      = 'GTQ'; // Guatemalan quetzal.
+	const GUYANESE_DOLLAR                         = 'GYD'; // Guyanese dollar.
+	const HONG_KONG_DOLLAR                        = 'HKD'; // Hong Kong dollar.
+	const HONDURAN_LEMPIRA                        = 'HNL'; // Honduran lempira.
+	const HAITIAN_GOURDE                          = 'HTG'; // Haitian gourde.
+	const HUNGARIAN_FORINT                        = 'HUF'; // Hungarian forint.
+	const INDONESIAN_RUPIAH                       = 'IDR'; // Indonesian rupiah.
+	const ISRAELI_NEW_SHEKEL                      = 'ILS'; // Israeli new shekel.
+	const INDIAN_RUPEE                            = 'INR'; // Indian rupee.
+	const ICELANDIC_KRONA                         = 'ISK'; // Icelandic króna.
+	const JAMAICAN_DOLLAR                         = 'JMD'; // Jamaican dollar.
+	const JAPANESE_YEN                            = 'JPY'; // Japanese yen.
+	const KENYAN_SHILLING                         = 'KES'; // Kenyan shilling.
+	const KYRGYZSTANI_SOM                         = 'KGS'; // Kyrgyzstani som.
+	const CAMBODIAN_RIEL                          = 'KHR'; // Cambodian riel.
+	const COMORIAN_FRANC                          = 'KMF'; // Comorian franc.
+	const SOUTH_KOREAN_WON                        = 'KRW'; // South Korean won.
+	const CAYMAN_ISLANDS_DOLLAR                   = 'KYD'; // Cayman Islands dollar.
+	const KAZAKHSTANI_TENGE                       = 'KZT'; // Kazakhstani tenge.
+	const LAO_KIP                                 = 'LAK'; // Lao kip.
+	const LEBANESE_POUND                          = 'LBP'; // Lebanese pound.
+	const SRI_LANKAN_RUPEE                        = 'LKR'; // Sri Lankan rupee.
+	const LIBERIAN_DOLLAR                         = 'LRD'; // Liberian dollar.
+	const LESOTHO_LOTI                            = 'LSL'; // Lesotho loti.
+	const MOROCCAN_DIRHAM                         = 'MAD'; // Moroccan dirham.
+	const MOLDOVAN_LEU                            = 'MDL'; // Moldovan leu.
+	const MALAGASY_ARIARY                         = 'MGA'; // Malagasy ariary.
+	const MACEDONIAN_DENAR                        = 'MKD'; // Macedonian denar.
+	const MYANMAR_KYAT                            = 'MMK'; // Myanmar kyat.
+	const MONGOLIAN_TOGROG                        = 'MNT'; // Mongolian tögrög.
+	const MACANESE_PATACA                         = 'MOP'; // Macanese pataca.
+	const MAURITIAN_RUPEE                         = 'MUR'; // Mauritian rupee.
+	const MALDIVIAN_RUFIYAA                       = 'MVR'; // Maldivian rufiyaa.
+	const MALAWIAN_KWACHA                         = 'MWK'; // Malawian kwacha.
+	const MEXICAN_PESO                            = 'MXN'; // Mexican peso.
+	const MALAYSIAN_RINGGIT                       = 'MYR'; // Malaysian ringgit.
+	const MOZAMBICAN_METICAL                      = 'MZN'; // Mozambican metical.
+	const NAMIBIAN_DOLLAR                         = 'NAD'; // Namibian dollar.
+	const NIGERIAN_NAIRA                          = 'NGN'; // Nigerian naira.
+	const NICARAGUAN_CORDOBA                      = 'NIO'; // Nicaraguan córdoba.
+	const NORWEGIAN_KRONE                         = 'NOK'; // Norwegian krone.
+	const NEPALESE_RUPEE                          = 'NPR'; // Nepalese rupee.
+	const NEW_ZEALAND_DOLLAR                      = 'NZD'; // New Zealand dollar.
+	const PANAMANIAN_BALBOA                       = 'PAB'; // Panamanian balboa.
+	const PERUVIAN_SOL                            = 'PEN'; // Peruvian sol.
+	const PAPUA_NEW_GUINEAN_KINA                  = 'PGK'; // Papua New Guinean kina.
+	const PHILIPPINE_PESO                         = 'PHP'; // Philippine peso.
+	const PAKISTANI_RUPEE                         = 'PKR'; // Pakistani rupee.
+	const POLISH_ZLOTY                            = 'PLN'; // Polish złoty.
+	const PARAGUAYAN_GUARANI                      = 'PYG'; // Paraguayan guaraní.
+	const QATARI_RIYAL                            = 'QAR'; // Qatari riyal.
+	const ROMANIAN_LEU                            = 'RON'; // Romanian leu.
+	const SERBIAN_DINAR                           = 'RSD'; // Serbian dinar.
+	const RUSSIAN_RUBLE                           = 'RUB'; // Russian ruble.
+	const RWANDAN_FRANC                           = 'RWF'; // Rwandan franc.
+	const SAUDI_RIYAL                             = 'SAR'; // Saudi riyal.
+	const SOLOMON_ISLANDS_DOLLAR                  = 'SBD'; // Solomon Islands dollar.
+	const SEYCHELLOIS_RUPEE                       = 'SCR'; // Seychellois rupee.
+	const SWEDISH_KRONA                           = 'SEK'; // Swedish krona.
+	const SINGAPORE_DOLLAR                        = 'SGD'; // Singapore dollar.
+	const SAINT_HELENA_POUND                      = 'SHP'; // Saint Helena pound.
+	const SIERRA_LEONEAN_LEONE                    = 'SLE'; // Sierra Leonean leone.
+	const SOMALI_SHILLING                         = 'SOS'; // Somali shilling.
+	const SURINAMESE_DOLLAR                       = 'SRD'; // Surinamese dollar.
+	const SAO_TOME_AND_PRINCIPE_DOBRA             = 'STD'; // São Tomé and Príncipe dobra.
+	const SWAZI_LILANGENI                         = 'SZL'; // Swazi lilangeni.
+	const THAI_BAHT                               = 'THB'; // Thai baht.
+	const TAJIKISTANI_SOMONI                      = 'TJS'; // Tajikistani somoni.
+	const TONGAN_PAANGA                           = 'TOP'; // Tongan paʻanga.
+	const TURKISH_LIRA                            = 'TRY'; // Turkish lira.
+	const TRINIDAD_AND_TOBAGO_DOLLAR              = 'TTD'; // Trinidad and Tobago dollar.
+	const NEW_TAIWAN_DOLLAR                       = 'TWD'; // New Taiwan dollar.
+	const TANZANIAN_SHILLING                      = 'TZS'; // Tanzanian shilling.
+	const UKRAINIAN_HRYVNIA                       = 'UAH'; // Ukrainian hryvnia.
+	const UGANDAN_SHILLING                        = 'UGX'; // Ugandan shilling.
+	const URUGUAYAN_PESO                          = 'UYU'; // Uruguayan peso.
+	const UZBEKISTANI_SOM                         = 'UZS'; // Uzbekistani som.
+	const VIETNAMESE_DONG                         = 'VND'; // Vietnamese đồng.
+	const VANUATU_VATU                            = 'VUV'; // Vanuatu vatu.
+	const SAMOAN_TALA                             = 'WST'; // Samoan tala.
+	const CENTRAL_AFRICAN_CFA_FRANC               = 'XAF'; // Central African CFA franc.
+	const EAST_CARIBBEAN_DOLLAR                   = 'XCD'; // East Caribbean dollar.
+	const WEST_AFRICAN_CFA_FRANC                  = 'XOF'; // West African CFA franc.
+	const CFP_FRANC                               = 'XPF'; // CFP franc.
+	const YEMENI_RIAL                             = 'YER'; // Yemeni rial.
+	const SOUTH_AFRICAN_RAND                      = 'ZAR'; // South African rand.
+	const ZAMBIAN_KWACHA                          = 'ZMW'; // Zambian kwacha.
+	// ... add more currencies as needed.
+	// crypto currencies.
+	const BITCOIN = 'BTC'; // Bitcoin.
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-express-checkout-hong-kong-states.php

@@ -0,0 +1,360 @@
+<?php
+/**
+ * Class Express_Checkout_Hong_Kong_States
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Class Express_Checkout_Hong_Kong_States
+ *
+ * Contains a list of districts (equivalent to WC states) in Hong Kong used for normalization and validation purposes.
+ * This is necessary due to a bug in Apple Pay that's currently being worked on. Until
+ * that bug is fixed this workaround will be necessary.
+ *
+ * More info in pc4etw-bY-p2.
+ *
+ * Note: The following code has been kindly sourced from the WooCommerce Stripe Payment Gateway implementation,
+ * which addresses the same issue in that plugin. See https://github.com/woocommerce/woocommerce-gateway-stripe/pull/1593.
+ *
+ * @since x.x.x
+ */
+class Express_Checkout_Hong_Kong_States {
+	// Source: https://www.rvd.gov.hk/doc/tc/hkpr13/06.pdf.
+	const STATES = [
+		'hong kong',
+		'hong kong island',
+		'港島',
+
+		'central and western',
+		'中西區',
+
+		'kennedy town',
+		'shek tong tsui',
+		'sai ying pun',
+		'sheung wan',
+		'central',
+		'admiralty',
+		'mid-levels',
+		'peak',
+		'堅尼地城',
+		'石塘咀',
+		'西營盤',
+		'上環',
+		'中環',
+		'金鐘',
+		'半山區',
+		'山頂',
+
+		'wan chai',
+		'灣仔',
+
+		'causeway bay',
+		'happy valley',
+		'tai hang',
+		'so kon po',
+		"jardine's lookout",
+		'灣仔',
+		'銅鑼灣',
+		'跑馬地',
+		'大坑',
+		'掃桿埔',
+		'渣甸山',
+
+		'eastern',
+		'東區',
+
+		'tin hau',
+		'braemar hill',
+		'north point',
+		'quarry bay',
+		'sai wan ho',
+		'shau kei wan',
+		'chai wan',
+		'siu sai wan',
+		'天后',
+		'寶馬山',
+		'北角',
+		'鰂魚涌',
+		'西灣河',
+		'筲箕灣',
+		'柴灣',
+		'小西灣',
+
+		'southern',
+		'南區',
+
+		'pok fu lam',
+		'aberdeen',
+		'ap lei chau',
+		'wong chuk hang',
+		'shouson hill',
+		'repulse bay',
+		'chung hom kok',
+		'stanley',
+		'tai tam',
+		'shek o',
+		'薄扶林',
+		'香港仔',
+		'鴨脷洲',
+		'黃竹坑',
+		'壽臣山',
+		'淺水灣',
+		'舂磡角',
+		'赤柱',
+		'大潭',
+		'石澳',
+
+		'kowloon',
+		'九龍',
+
+		'yau tsim mong',
+		'油尖旺',
+
+		'tsim sha tsui',
+		'yau ma tei',
+		'west kowloon reclamation',
+		"king's park, mong kok",
+		'tai kok tsui',
+		'尖沙咀',
+		'油麻地',
+		'西九龍填海區',
+		'京士柏',
+		'旺角',
+		'大角咀',
+
+		'sham shui po',
+		'深水埗',
+
+		'mei foo',
+		'lai chi kok',
+		'cheung sha wan',
+		'shek kip mei',
+		'yau yat tsuen',
+		'tai wo ping',
+		'stonecutters island',
+		'美孚',
+		'荔枝角',
+		'長沙灣',
+		'石硤尾',
+		'又一村',
+		'大窩坪',
+		'昂船洲',
+
+		'kowloon city',
+		'九龍城',
+
+		'hung hom',
+		'to kwa wan',
+		'ma tau kok',
+		'ma tau wai',
+		'kai tak',
+		'ho man tin',
+		'kowloon tong',
+		'beacon hill',
+		'紅磡',
+		'土瓜灣',
+		'馬頭角',
+		'馬頭圍',
+		'啟德',
+		'何文田',
+		'九龍塘',
+		'筆架山',
+
+		'wong tai sin',
+		'黃大仙',
+
+		'san po kong',
+		'tung tau',
+		'wang tau hom',
+		'lok fu',
+		'diamond hill',
+		'tsz wan shan',
+		'ngau chi wan',
+		'新蒲崗',
+		'東頭',
+		'橫頭磡',
+		'樂富',
+		'鑽石山',
+		'慈雲山',
+		'牛池灣',
+
+		'kwun tong',
+		'觀塘',
+
+		'ping shek',
+		'kowloon bay',
+		'ngau tau kok',
+		'jordan valley',
+		'kwun tong',
+		'sau mau ping',
+		'lam tin',
+		'yau tong',
+		'lei yue mun',
+		'坪石',
+		'九龍灣',
+		'牛頭角',
+		'佐敦谷',
+		'觀塘',
+		'秀茂坪',
+		'藍田',
+		'油塘',
+		'鯉魚門',
+
+		'new territories',
+		'新界',
+
+		'kwai tsing',
+		'葵青',
+
+		'kwai chung',
+		'tsing yi',
+		'葵涌',
+		'青衣',
+
+		'tsuen wan',
+		'荃灣',
+
+		'lei muk shue',
+		'ting kau',
+		'sham tseng',
+		'tsing lung tau',
+		'ma wan',
+		'sunny bay',
+		'梨木樹',
+		'汀九',
+		'深井',
+		'青龍頭',
+		'馬灣',
+		'欣澳',
+
+		'tuen mun',
+		'屯門',
+
+		'tai lam chung',
+		'so kwun wat',
+		'tuen mun',
+		'lam tei',
+		'大欖涌',
+		'掃管笏',
+		'屯門',
+		'藍地',
+
+		'yuen long',
+		'元朗',
+
+		'hung shui kiu',
+		'ha tsuen',
+		'lau fau shan',
+		'tin shui wai',
+		'yuen long',
+		'san tin',
+		'lok ma chau',
+		'kam tin',
+		'shek kong',
+		'pat heung',
+		'洪水橋',
+		'廈村',
+		'流浮山',
+		'天水圍',
+		'元朗',
+		'新田',
+		'落馬洲',
+		'錦田',
+		'石崗',
+		'八鄉',
+
+		'north',
+		'北區',
+
+		'fanling',
+		'luen wo hui',
+		'sheung shui',
+		'shek wu hui',
+		'sha tau kok',
+		'luk keng',
+		'wu kau tang',
+		'粉嶺',
+		'聯和墟',
+		'上水',
+		'石湖墟',
+		'沙頭角',
+		'鹿頸',
+		'烏蛟騰',
+
+		'tai po',
+		'大埔',
+
+		'tai po market',
+		'tai po kau',
+		'tai mei tuk',
+		'shuen wan',
+		'cheung muk tau',
+		'kei ling ha',
+		'大埔墟',
+		'大埔',
+		'大埔滘',
+		'大尾篤',
+		'船灣',
+		'樟木頭',
+		'企嶺下',
+
+		'sha tin',
+		'沙田',
+
+		'tai wai',
+		'fo tan',
+		'ma liu shui',
+		'wu kai sha',
+		'ma on shan',
+		'大圍',
+		'火炭',
+		'馬料水',
+		'烏溪沙',
+		'馬鞍山',
+
+		'sai kung',
+		'西貢',
+
+		'clear water bay',
+		'tai mong tsai',
+		'tseung kwan o',
+		'hang hau',
+		'tiu keng leng',
+		'ma yau tong',
+		'清水灣',
+		'大網仔',
+		'將軍澳',
+		'坑口',
+		'調景嶺',
+		'馬游塘',
+
+		'islands',
+		'離島',
+
+		'cheung chau',
+		'peng chau',
+		'lantau island (including tung chung)',
+		'lamma island',
+		'長洲',
+		'坪洲',
+		'大嶼山(包括東涌)',
+		'南丫島',
+	];
+
+	/**
+	 * Checks if the given state is a valid region (equivalent to WC state) in Hong Kong.
+	 *
+	 * @param string $state  The state to be evaluated.
+	 * @return bool  True if the provided state is valid, false otherwise.
+	 */
+	public static function is_valid_state( $state ) {
+		return in_array( $state, self::STATES, true );
+	}
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-fraud-meta-box-type.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Class Fraud_Meta_Box_Type
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * This class gives a list of all the possible fraud meta box type constants.
+ *
+ * @psalm-immutable
+ */
+class Fraud_Meta_Box_Type extends Base_Constant {
+	const ALLOW            = 'allow';
+	const BLOCK            = 'block';
+	const NOT_CARD         = 'not_card';
+	const NOT_WCPAY        = 'not_wcpay';
+	const PAYMENT_STARTED  = 'payment_started';
+	const REVIEW           = 'review';
+	const REVIEW_ALLOWED   = 'review_allowed';
+	const REVIEW_BLOCKED   = 'review_blocked';
+	const REVIEW_EXPIRED   = 'review_expired';
+	const REVIEW_FAILED    = 'review_failed';
+	const TERMINAL_PAYMENT = 'terminal_payment';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-intent-status.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Class Intent_Status
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * This class gives a list of all Payment and Setup Intent status name constants.
+ * - https://stripe.com/docs/api/payment_intents/object#payment_intent_object-status
+ * - https://stripe.com/docs/api/setup_intents/object#setup_intent_object-status
+ *
+ * @psalm-immutable
+ */
+class Intent_Status extends Base_Constant {
+	const REQUIRES_PAYMENT_METHOD = 'requires_payment_method';
+	const REQUIRES_CONFIRMATION   = 'requires_confirmation';
+	const REQUIRES_ACTION         = 'requires_action';
+	const PROCESSING              = 'processing';
+	const REQUIRES_CAPTURE        = 'requires_capture';
+	const CANCELED                = 'canceled';
+	const SUCCEEDED               = 'succeeded';
+
+	/**
+	 * Stripe intents that are treated as successfully created, i.e. authorized.
+	 *
+	 * @type array
+	 */
+	const AUTHORIZED_STATUSES = [
+		self::SUCCEEDED,
+		self::REQUIRES_CAPTURE,
+		self::PROCESSING,
+	];
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-order-mode.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Class Order_Mode
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Enum saved in the order meta for the mode that the payment was processed in.
+ *
+ * @psalm-immutable
+ */
+class Order_Mode extends Base_Constant {
+	const TEST       = 'test';
+	const PRODUCTION = 'prod';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-order-status.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Class Order_Status
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * This class gives a list of all the possible order status constants.
+ *
+ * @psalm-immutable
+ */
+class Order_Status extends Base_Constant {
+	const CANCELLED  = 'cancelled';
+	const COMPLETED  = 'completed';
+	const FAILED     = 'failed';
+	const ON_HOLD    = 'on-hold';
+	const PENDING    = 'pending';
+	const PROCESSING = 'processing';
+	const REFUNDED   = 'refunded';
+	const TRASH      = 'trash';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-payment-capture-type.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Class Capture_Type
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Enum used in WCPay\Payment_Information to determine whether a payment was
+ * initated by a merchant or a customer.
+ *
+ * @psalm-immutable
+ */
+class Payment_Capture_Type extends Base_Constant {
+	const AUTOMATIC = 'automatic_capture';
+	const MANUAL    = 'manual_capture';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-payment-initiated-by.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Class Payment_Information
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Enum used in WCPay\Payment_Information to determine whether a payment was
+ * initated by a merchant or a customer.
+ *
+ * @psalm-immutable
+ */
+class Payment_Initiated_By extends Base_Constant {
+	const MERCHANT = 'initiated_by_merchant';
+	const CUSTOMER = 'initiated_by_customer';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-payment-intent-status.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Class Payment_Intent_Status
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Payment_Intent_Status was deprecated in favor of Intent_Status.
+ *
+ * @deprecated 6.4.0
+ * @see Intent_Status
+ *
+ * @psalm-immutable
+ */
+class Payment_Intent_Status extends Intent_Status {
+
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-payment-method.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * Class Payment_Method
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Possible enum values for the type of the PaymentMethod.
+ * https://stripe.com/docs/api/payment_methods/object#payment_method_object-type
+ *
+ * @psalm-immutable
+ */
+class Payment_Method extends Base_Constant {
+	const BANCONTACT      = 'bancontact';
+	const BASC            = 'bacs_debit';
+	const BECS            = 'au_becs_debit';
+	const CARD            = 'card';
+	const CARD_PRESENT    = 'card_present';
+	const EPS             = 'eps';
+	const GIROPAY         = 'giropay';
+	const IDEAL           = 'ideal';
+	const INTERAC_PRESENT = 'interac_present';
+	const LINK            = 'link';
+	const P24             = 'p24';
+	const SEPA            = 'sepa_debit';
+	const SOFORT          = 'sofort';
+	const US_BANK_ACCOUNT = 'us_bank_account';
+	const AFFIRM          = 'affirm';
+	const AFTERPAY        = 'afterpay_clearpay';
+	const KLARNA          = 'klarna';
+
+	const IPP_ALLOWED_PAYMENT_METHODS = [
+		self::CARD_PRESENT,
+		self::INTERAC_PRESENT,
+	];
+
+	const BNPL_PAYMENT_METHODS = [
+		self::AFFIRM,
+		self::AFTERPAY,
+		self::KLARNA,
+	];
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-payment-type.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Class Payment_Type
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Enum used in WCPay\Payment_Information to determine whether a payment
+ * is a single payment or a part of a recurring series.
+ *
+ * @psalm-immutable
+ */
+class Payment_Type extends Base_Constant {
+	const SINGLE    = 'single';
+	const RECURRING = 'recurring';
+}

wp-content/plugins/woocommerce-payments/includes/constants/class-track-events.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Class Track_Events
+ *
+ * @package WooCommerce\Payments
+ */
+
+namespace WCPay\Constants;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+/**
+ * Event names for WooCommerce Analytics.
+ *
+ * @psalm-immutable
+ */
+class Track_Events extends Base_Constant {
+	// UPE toggle events.
+	public const UPE_ENABLED                  = 'wcpay_upe_enabled';
+	public const UPE_DISABLED                 = 'wcpay_upe_disabled';
+	public const SPLIT_UPE_ENABLED            = 'wcpay_split_upe_enabled';
+	public const SPLIT_UPE_DISABLED           = 'wcpay_split_upe_disabled';
+	public const DEFERRED_INTENT_UPE_ENABLED  = 'wcpay_deferred_intent_upe_enabled';
+	public const DEFERRED_INTENT_UPE_DISABLED = 'wcpay_deferred_intent_upe_disabled';
+
+	// Payment method events.
+	public const PAYMENT_METHOD_ENABLED  = 'wcpay_payment_method_enabled';
+	public const PAYMENT_METHOD_DISABLED = 'wcpay_payment_method_disabled';
+}