/*
 * Copyright (c) 2026 Contributors to the Eclipse Foundation.
 * Copyright (c) 2017, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package ee.jakarta.tck.security.test;

import static ee.jakarta.tck.security.test.Utils.notNull;
import static jakarta.security.enterprise.identitystore.CredentialValidationResult.Status.VALID;

import java.io.IOException;

import jakarta.enterprise.context.RequestScoped;
import jakarta.inject.Inject;
import jakarta.security.enterprise.AuthenticationException;
import jakarta.security.enterprise.AuthenticationStatus;
import jakarta.security.enterprise.authentication.mechanism.http.HttpAuthenticationMechanism;
import jakarta.security.enterprise.authentication.mechanism.http.HttpMessageContext;
import jakarta.security.enterprise.credential.Password;
import jakarta.security.enterprise.credential.UsernamePasswordCredential;
import jakarta.security.enterprise.identitystore.CredentialValidationResult;
import jakarta.security.enterprise.identitystore.IdentityStoreHandler;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@RequestScoped
public class TestAuthenticationMechanism implements HttpAuthenticationMechanism {

    @Inject
    private IdentityStoreHandler identityStoreHandler;

    @Override
    public AuthenticationStatus validateRequest(HttpServletRequest request, HttpServletResponse response, HttpMessageContext httpMessageContext) throws AuthenticationException {

        String name = request.getParameter("name");
        String password = request.getParameter("password");

        if (notNull(name, password)) {
            CredentialValidationResult result = identityStoreHandler.validate(
                    new UsernamePasswordCredential(name, new Password(password)));

            if (result.getStatus() == VALID) {
                return httpMessageContext.notifyContainerAboutLogin(
                        result.getCallerPrincipal(), result.getCallerGroups());
            }

            return httpMessageContext.responseUnauthorized();
        }

        return httpMessageContext.doNothing();
    }

    @Override
    public AuthenticationStatus secureResponse(HttpServletRequest request, HttpServletResponse response, HttpMessageContext httpMessageContext) {
        try {
            response.getWriter().write("This is in HAM secureResponse mthod.\n");
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
        return AuthenticationStatus.SUCCESS;
    }

}
