/*
 * Copyright (c) 2024, WSO2 LLC. (http://www.wso2.com).
 *
 * WSO2 LLC. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.wso2.carbon.identity.api.server.configs.common.factory;

import org.springframework.beans.factory.config.AbstractFactoryBean;
import org.wso2.carbon.context.PrivilegedCarbonContext;
import org.wso2.carbon.identity.oauth2.impersonation.services.ImpersonationConfigMgtService;

/**
 * Factory bean for creating instances of ImpersonationConfigMgtService.
 */
public class ImpersonationMgtOGSiServiceFactory extends AbstractFactoryBean<ImpersonationConfigMgtService> {

    private ImpersonationConfigMgtService impersonationConfigMgtService;

    /**
     * Specifies the type of object that this FactoryBean creates.
     *
     * @return The type of object created by this FactoryBean.
     */
    @Override
    public Class<?> getObjectType() {

        return Object.class;
    }

    /**
     * Creates an instance of ImpersonationConfigMgtService.
     *
     * @return The created ImpersonationConfigMgtService instance.
     * @throws Exception If there is an error while creating the instance.
     */
    @Override
    protected ImpersonationConfigMgtService createInstance() throws Exception {
        // Check if the service instance has already been created.
        if (this.impersonationConfigMgtService == null) {
            // Attempt to retrieve the ImpersonationConfigMgtService instance from OSGi services.
            ImpersonationConfigMgtService taskOperationService =
                    (ImpersonationConfigMgtService) PrivilegedCarbonContext.getThreadLocalCarbonContext()
                            .getOSGiService(ImpersonationConfigMgtService.class, null);
            // If the service instance is retrieved successfully, store it in the instance variable.
            if (taskOperationService != null) {
                this.impersonationConfigMgtService = taskOperationService;
            } else {
                // If the service instance cannot be retrieved, throw an exception.
                throw new Exception("Unable to retrieve ImpersonationConfigMgtService service.");
            }
        }
        // Return the stored ImpersonationConfigMgtService instance.
        return this.impersonationConfigMgtService;
    }
}
