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// The MIT License (MIT)
// Copyright © 2015 AppsLandia. All rights reserved.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package com.appslandia.plum.base;

import javax.security.enterprise.credential.Credential;
import javax.security.enterprise.identitystore.CredentialValidationResult;
import javax.security.enterprise.identitystore.IdentityStore;

import com.appslandia.common.base.Out;

/**
 *
 * @author Loc Ha
 *
 */
public abstract class IdentityStoreBase implements IdentityStore {

	public abstract Class getCredentialType();

	@Override
	public CredentialValidationResult validate(Credential credential) {
		// Not AuthCredential
		if (!(credential instanceof AuthCredential)) {
			return CredentialValidationResult.NOT_VALIDATED_RESULT;
		}
		AuthCredential authCredential = (AuthCredential) credential;

		// Check credential type
		if (getCredentialType() != authCredential.getCredential().getClass()) {
			return CredentialValidationResult.NOT_VALIDATED_RESULT;
		}

		// Validate credential
		Out invalidCode = new Out<>();
		PrincipalGroups principalGroups = doValidate(authCredential.getCredential(), invalidCode);

		if (principalGroups == null) {
			return CredentialInvalidResult.valueOf(invalidCode.get());
		}
		return new CredentialValidationResult(principalGroups.getPrincipal(), principalGroups.getGroups());
	}

	protected abstract PrincipalGroups doValidate(Credential credential, Out invalidCode);
}