/*
 * *****************************************************************************
 *      Cloud Foundry
 *      Copyright (c) [2009-2015] Pivotal Software, Inc. All Rights Reserved.
 *
 *      This product is licensed to you under the Apache License, Version 2.0 (the "License").
 *      You may not use this product except in compliance with the License.
 *
 *      This product includes a number of subcomponents with
 *      separate copyright notices and license terms. Your use of these
 *      subcomponents is subject to the terms and conditions of the
 *      subcomponent's license, as noted in the LICENSE file.
 * *****************************************************************************
 */

package org.cloudfoundry.identity.uaa.audit.event;

import org.cloudfoundry.identity.uaa.audit.AuditEvent;
import org.cloudfoundry.identity.uaa.audit.AuditEventType;
import org.springframework.security.core.Authentication;
import org.springframework.util.ReflectionUtils;

import java.lang.reflect.Method;

import static java.util.Optional.ofNullable;

public class EntityDeletedEvent<T> extends AbstractUaaEvent {

    protected static final String dataFormat = "Class:%s; ID:%s";

    public EntityDeletedEvent(T deleted, Authentication authentication) {
        super(deleted, authentication);
    }

    public T getDeleted() {
        return (T) source;
    }

    @Override
    public AuditEvent getAuditEvent() {
        return createAuditRecord(
            getAuthentication().getName(),
            AuditEventType.EntityDeletedEvent,
            getOrigin(getAuthentication()),
            String.format(dataFormat, source.getClass().getName(), getObjectId())
        );
    }

    public String getObjectId() {
        Method m = ofNullable(ReflectionUtils.findMethod(source.getClass(), "getId"))
            .orElseGet(() -> ReflectionUtils.findMethod(source.getClass(), "getClientId"));
        return m!=null ? (String)ReflectionUtils.invokeMethod(m, source) : String.valueOf(System.identityHashCode(source));
    }
}