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package zeroecho.pki.impl.async;

import zeroecho.pki.api.PkiId;
import zeroecho.pki.api.audit.Principal;

/**
 * PKI-specific async bus type aliases.
 *
 * <p>
 * This class exists solely to centralize the chosen type parameters used to
 * instantiate the generic async bus core.
 * </p>
 */
public final class PkiAsyncTypes {

    private PkiAsyncTypes() {
        throw new AssertionError("No instances.");
    }

    /**
     * Operation identifier type for PKI asynchronous operations.
     */
    public static final class OpId { // NOPMD
        private OpId() {
        }
    }

    /**
     * Owner type for PKI asynchronous operations.
     */
    public static final class Owner {
        private Owner() {
        }
    }

    /**
     * Endpoint identifier type for PKI asynchronous operations.
     */
    public static final class EndpointId {
        private EndpointId() {
        }
    }

    /**
     * Result type for PKI asynchronous operations.
     *
     * <p>
     * The default bus does not persist results by default. Higher layers should
     * store results (e.g., issued certificates) in PKI storage and use the bus only
     * for status + references.
     * </p>
     */
    public static final class Result {
        private Result() {
        }
    }

    /**
     * Returns the operation id type.
     *
     * @return class token
     */
    public static Class<PkiId> opIdType() {
        return PkiId.class;
    }

    /**
     * Returns the owner type.
     *
     * @return class token
     */
    public static Class<Principal> ownerType() {
        return Principal.class;
    }
}
