import java.security.DEREncodable;
import java.security.PEM;
import java.security.PEMDecoder;
import java.security.Provider;
import java.security.Security;

/**
 * JDK 26 code for the PEM preview API. It compiles on 26 and fails on 27.
 * Three things moved between the second and third preview (JEP 524 -> JEP 538):
 *   1. DEREncodable was renamed BinaryEncodable
 *   2. PEMDecoder.withFactory(Provider) became withFactoriesOf(Provider)
 *   3. PEM was a record whose content() returned a String; it is now a class whose content() returns byte[]
 * Driven by scripts/broken-on-27.sh, which commits the compiler's own messages.
 */
public class Pem26Style {
    public static void main(String[] args) {
        String text = "-----BEGIN ANKURM DEMO-----\naGVsbG8=\n-----END ANKURM DEMO-----\n";
        DEREncodable decoded = PEMDecoder.of().decode(text);                    // 1
        Provider provider = Security.getProviders()[0];
        PEMDecoder viaProvider = PEMDecoder.of().withFactory(provider);         // 2
        if (decoded instanceof PEM pem) {
            String base64Text = pem.content();                                  // 3
            System.out.println(pem.type() + " / " + base64Text);
        }
    }
}