/*******************************************************************************
 * Copyright (C) 2026, Leo Galambos
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this
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 * 3. All advertising materials mentioning features or use of this software must
 *    display the following acknowledgement:
 *    This product includes software developed by the Egothor project.
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package zeroecho.pki.api;

/**
 * Immutable container for an encoded artifact.
 *
 * <p>
 * This type intentionally carries only the {@link Encoding} and raw bytes. It
 * does not carry a media type, because DER/PEM/BINARY do not uniquely determine
 * the semantic meaning (a DER payload may represent a certificate, CSR, CRL,
 * etc.). The semantic meaning is carried by the surrounding API context.
 * </p>
 *
 * <p>
 * Security note: implementations must never log the raw bytes in full.
 * </p>
 *
 * @param encoding encoding kind
 * @param bytes    non-empty payload bytes
 */
public record EncodedObject(Encoding encoding, byte[] bytes) {

    /**
     * Creates an encoded object.
     *
     * @param encoding encoding kind
     * @param bytes    non-empty payload bytes
     * @throws IllegalArgumentException if {@code encoding} is null or {@code bytes}
     *                                  is null/empty
     */
    public EncodedObject {
        if (encoding == null) {
            throw new IllegalArgumentException("encoding must not be null");
        }
        if (bytes == null || bytes.length == 0) {
            throw new IllegalArgumentException("bytes must not be null/empty");
        }
        bytes = bytes.clone();
    }

    /**
     * Returns a defensive copy of the encoded payload.
     *
     * @return newly allocated payload copy
     */
    @Override
    public byte[] bytes() {
        return bytes.clone();
    }
}
