package adapter;
/**
 * The Adapter — bridges StripeClient to PaymentGateway.
 *
 * Object Adapter variant: holds a StripeClient instance via composition.
 * This means it can wrap any StripeClient including subclasses.
 */
public class StripePaymentAdapter implements PaymentGateway {
    private final StripeClient stripe;
    public StripePaymentAdapter(StripeClient stripe) {
        this.stripe = stripe;
    }
    @Override
    public boolean charge(String customerId, double amount, String currency) {
        // Translation 1: dollars → cents
        long amountInCents = Math.round(amount * 100);
        // Translation 2: charge() → createCharge(), lowercase currency
        StripeClient.StripeChargeResult result =
                stripe.createCharge(customerId, amountInCents, currency.toLowerCase());
        // Translation 3: StripeChargeResult → boolean
        return result.success;
    }
    @Override
    public boolean refund(String transactionId, double amount) {
        long amountInCents = Math.round(amount * 100);
        // Translation: refund() → issueRefund(), your "transactionId" is Stripe's "chargeId"
        return stripe.issueRefund(transactionId, amountInCents);
    }
    @Override
    public String getStatus(String transactionId) {
        // Translation: getStatus() → retrieveCharge(), StripeChargeResult → String
        StripeClient.StripeChargeResult result = stripe.retrieveCharge(transactionId);
        if (!result.success) return "FAILED";
        return result.status != null ? result.status.toUpperCase() : "UNKNOWN";
    }
}