<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * The WeChat Pay Payment Method class extending UPE base class
 */
class WC_Stripe_UPE_Payment_Method_Wechat_Pay extends WC_Stripe_UPE_Payment_Method {

	public const STRIPE_ID = WC_Stripe_Payment_Methods::WECHAT_PAY;

	/**
	 * Stripe account countries that may enable WeChat Pay.
	 *
	 * @var string[]
	 */
	protected const SUPPORTED_ACCOUNT_COUNTRIES = [
		WC_Stripe_Country_Code::AUSTRIA,
		WC_Stripe_Country_Code::AUSTRALIA,
		WC_Stripe_Country_Code::BELGIUM,
		WC_Stripe_Country_Code::CANADA,
		WC_Stripe_Country_Code::SWITZERLAND,
		WC_Stripe_Country_Code::GERMANY,
		WC_Stripe_Country_Code::DENMARK,
		WC_Stripe_Country_Code::SPAIN,
		WC_Stripe_Country_Code::FINLAND,
		WC_Stripe_Country_Code::FRANCE,
		WC_Stripe_Country_Code::HONG_KONG,
		WC_Stripe_Country_Code::IRELAND,
		WC_Stripe_Country_Code::ITALY,
		WC_Stripe_Country_Code::JAPAN,
		WC_Stripe_Country_Code::LUXEMBOURG,
		WC_Stripe_Country_Code::NETHERLANDS,
		WC_Stripe_Country_Code::NORWAY,
		WC_Stripe_Country_Code::PORTUGAL,
		WC_Stripe_Country_Code::SWEDEN,
		WC_Stripe_Country_Code::SINGAPORE,
		WC_Stripe_Country_Code::UNITED_KINGDOM,
		WC_Stripe_Country_Code::UNITED_STATES,
	];

	/**
	 * Constructor for WeChat Pay payment method
	 */
	public function __construct() {
		parent::__construct();
		$this->stripe_id            = self::STRIPE_ID;
		$this->title                = __( 'WeChat Pay', 'woocommerce-gateway-stripe' );
		$this->is_reusable          = false;
		$this->supported_currencies = [
			WC_Stripe_Currency_Code::AUSTRALIAN_DOLLAR,
			WC_Stripe_Currency_Code::CANADIAN_DOLLAR,
			WC_Stripe_Currency_Code::SWISS_FRANC,
			WC_Stripe_Currency_Code::CHINESE_YUAN,
			WC_Stripe_Currency_Code::DANISH_KRONE,
			WC_Stripe_Currency_Code::EURO,
			WC_Stripe_Currency_Code::POUND_STERLING,
			WC_Stripe_Currency_Code::HONG_KONG_DOLLAR,
			WC_Stripe_Currency_Code::JAPANESE_YEN,
			WC_Stripe_Currency_Code::NORWEGIAN_KRONE,
			WC_Stripe_Currency_Code::SWEDISH_KRONA,
			WC_Stripe_Currency_Code::SINGAPORE_DOLLAR,
			WC_Stripe_Currency_Code::UNITED_STATES_DOLLAR,
		];
		$this->label                = __( 'WeChat Pay', 'woocommerce-gateway-stripe' );
		$this->description          = __(
			'WeChat Pay is a popular mobile payment and digital wallet service by WeChat in China.',
			'woocommerce-gateway-stripe'
		);
	}

	/**
	 * Returns the currencies this UPE method supports for the Stripe account.
	 * Documentation: https://docs.stripe.com/payments/wechat-pay#supported-currencies.
	 *
	 * @return array
	 */
	public function get_supported_currencies() {
		$cached_account_data = WC_Stripe::get_instance()->account->get_cached_account_data();
		$country             = $cached_account_data['country'] ?? null;

		$currency = [];

		switch ( $country ) {
			case WC_Stripe_Country_Code::AUSTRALIA:
				$currency = [ WC_Stripe_Currency_Code::AUSTRALIAN_DOLLAR, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::CANADA:
				$currency = [ WC_Stripe_Currency_Code::CANADIAN_DOLLAR, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::SWITZERLAND:
				$currency = [ WC_Stripe_Currency_Code::SWISS_FRANC, WC_Stripe_Currency_Code::CHINESE_YUAN, WC_Stripe_Currency_Code::EURO ];
				break;
			case WC_Stripe_Country_Code::DENMARK:
				$currency = [ WC_Stripe_Currency_Code::DANISH_KRONE, WC_Stripe_Currency_Code::CHINESE_YUAN, WC_Stripe_Currency_Code::EURO ];
				break;
			case WC_Stripe_Country_Code::HONG_KONG:
				$currency = [ WC_Stripe_Currency_Code::HONG_KONG_DOLLAR, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::JAPAN:
				$currency = [ WC_Stripe_Currency_Code::JAPANESE_YEN, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::NORWAY:
				$currency = [ WC_Stripe_Currency_Code::NORWEGIAN_KRONE, WC_Stripe_Currency_Code::CHINESE_YUAN, WC_Stripe_Currency_Code::EURO ];
				break;
			case WC_Stripe_Country_Code::SWEDEN:
				$currency = [ WC_Stripe_Currency_Code::SWEDISH_KRONA, WC_Stripe_Currency_Code::CHINESE_YUAN, WC_Stripe_Currency_Code::EURO ];
				break;
			case WC_Stripe_Country_Code::SINGAPORE:
				$currency = [ WC_Stripe_Currency_Code::SINGAPORE_DOLLAR, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::UNITED_KINGDOM:
				$currency = [ WC_Stripe_Currency_Code::POUND_STERLING, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			case WC_Stripe_Country_Code::UNITED_STATES:
				$currency = [ WC_Stripe_Currency_Code::UNITED_STATES_DOLLAR, WC_Stripe_Currency_Code::CHINESE_YUAN ];
				break;
			default:
				$currency = [ WC_Stripe_Currency_Code::CHINESE_YUAN ];
		}

		$euro_supported_countries = [ WC_Stripe_Country_Code::AUSTRIA, WC_Stripe_Country_Code::BELGIUM, WC_Stripe_Country_Code::FINLAND, WC_Stripe_Country_Code::FRANCE, WC_Stripe_Country_Code::GERMANY, WC_Stripe_Country_Code::IRELAND, WC_Stripe_Country_Code::ITALY, WC_Stripe_Country_Code::LUXEMBOURG, WC_Stripe_Country_Code::NETHERLANDS, WC_Stripe_Country_Code::PORTUGAL, WC_Stripe_Country_Code::SPAIN ];
		if ( in_array( $country, $euro_supported_countries, true ) ) {
			$currency = [ WC_Stripe_Currency_Code::EURO, WC_Stripe_Currency_Code::CHINESE_YUAN ];
		}

		return $currency;
	}
}