Copyright (c) 2008, 2012 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2008, 2012 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.osgi.internal.permadmin;

import org.osgi.service.condpermadmin.ConditionInfo;
import org.osgi.service.condpermadmin.ConditionalPermissionInfo;
import org.osgi.service.permissionadmin.PermissionInfo;

public class SecurityRowSnapShot implements ConditionalPermissionInfo {

	private final String name;
	private final ConditionInfo[] conditionInfos;
	private final PermissionInfo[] permissionInfos;
	private final String decision;

	public SecurityRowSnapShot(String name, ConditionInfo[] conditionInfos, PermissionInfo[] permissionInfos, String decision) {
		if (permissionInfos == null || permissionInfos.length == 0)
			throw new IllegalArgumentException("It is invalid to have empty permissionInfos"); //$NON-NLS-1$
		decision = decision.toLowerCase();
		boolean d = ConditionalPermissionInfo.DENY.equals(decision);
		boolean a = ConditionalPermissionInfo.ALLOW.equals(decision);
		if (!(d | a))
			throw new IllegalArgumentException("Invalid decision: " + decision); //$NON-NLS-1$
		conditionInfos = conditionInfos == null ? new ConditionInfo[0] : conditionInfos;
		this.name = name;
		// must create copies of the passed in arrays to prevent changes
		this.conditionInfos = (ConditionInfo[]) SecurityRow.cloneArray(conditionInfos);
		this.permissionInfos = (PermissionInfo[]) SecurityRow.cloneArray(permissionInfos);
		this.decision = decision;
	}

	@Override
	public ConditionInfo[] getConditionInfos() {
		return (ConditionInfo[]) SecurityRow.cloneArray(conditionInfos);
	}

	@Override
	public String getAccessDecision() {
		return decision;
	}

	@Override
	public String getName() {
		return name;
	}

	@Override
	public PermissionInfo[] getPermissionInfos() {
		return (PermissionInfo[]) SecurityRow.cloneArray(permissionInfos);
	}

	
Deprecated:
/**
	 * @deprecated
	 */
	@Override
	public void delete() {
		throw new UnsupportedOperationException();
	}

	@Override
	public String toString() {
		return getEncoded();
	}

	@Override
	public String getEncoded() {
		return SecurityRow.getEncoded(name, conditionInfos, permissionInfos, DENY.equalsIgnoreCase(decision));
	}

	@Override
	public boolean equals(Object obj) {
		// doing the simple (slow) thing for now
		if (obj == this)
			return true;
		if (!(obj instanceof ConditionalPermissionInfo))
			return false;
		// we assume the encoded string provides a canonical (comparable) form
		return getEncoded().equals(((ConditionalPermissionInfo) obj).getEncoded());
	}

	@Override
	public int hashCode() {
		return SecurityRow.getHashCode(name, conditionInfos, permissionInfos, getAccessDecision());
	}

}