/*-
 * ============LICENSE_START=======================================================
 * ONAP Policy Engine
 * ================================================================================
 * Copyright (C) 2017, 2019 AT&T Intellectual Property. All rights reserved.
 * Modified Copyright (C) 2018 Samsung Electronics Co., Ltd.
 * Modifications Copyright (C) 2019 Bell Canada
 * ================================================================================
 * Licensed 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.policy.admin;

import com.att.research.xacml.util.XACMLProperties;

import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.controller.ActionPolicyController;
import org.onap.policy.controller.CreateBRMSParamController;
import org.onap.policy.controller.CreateBRMSRawController;
import org.onap.policy.controller.CreateClosedLoopFaultController;
import org.onap.policy.controller.CreateClosedLoopPMController;
import org.onap.policy.controller.CreateDcaeMicroServiceController;
import org.onap.policy.controller.CreateFirewallController;
import org.onap.policy.controller.CreateOptimizationController;
import org.onap.policy.controller.CreatePolicyController;
import org.onap.policy.controller.DecisionPolicyController;
import org.onap.policy.rest.adapter.PolicyRestAdapter;
import org.onap.policy.rest.jpa.PolicyEntity;

public class PolicyAdapter {

    private static final Logger LOGGER = FlexLogger.getLogger(PolicyAdapter.class);

    public void configure(PolicyRestAdapter policyAdapter, PolicyEntity entity) {
        String policyNameValue = policyAdapter.getPolicyName().substring(0, policyAdapter.getPolicyName().indexOf('_'));
        String configPolicyName = getConfigPolicyName(policyAdapter);
        policyAdapter.setPolicyType(policyNameValue);

        if (configPolicyName != null) {
            policyAdapter.setConfigPolicyType(configPolicyName);
        }
        if ("Action".equalsIgnoreCase(policyAdapter.getPolicyType())) {
            new ActionPolicyController().prePopulateActionPolicyData(policyAdapter);
        }
        if ("Decision".equalsIgnoreCase(policyAdapter.getPolicyType())) {
            new DecisionPolicyController().prePopulateDecisionPolicyData(policyAdapter, entity);
        }
        if ("Config".equalsIgnoreCase(policyAdapter.getPolicyType())) {
            prePopulatePolicyData(policyAdapter, entity);
        }
    }

    private String getConfigPolicyName(PolicyRestAdapter policyAdapter) {
        String configPolicyName = null;
        if (policyAdapter.getPolicyName().startsWith("Config_PM")) {
            configPolicyName = "ClosedLoop_PM";
        } else if (policyAdapter.getPolicyName().startsWith("Config_Fault")) {
            configPolicyName = "ClosedLoop_Fault";
        } else if (policyAdapter.getPolicyName().startsWith("Config_FW")) {
            configPolicyName = "Firewall Config";
        } else if (policyAdapter.getPolicyName().startsWith("Config_BRMS_Raw")) {
            configPolicyName = "BRMS_Raw";
        } else if (policyAdapter.getPolicyName().startsWith("Config_BRMS_Param")) {
            configPolicyName = "BRMS_Param";
        } else if (policyAdapter.getPolicyName().startsWith("Config_MS")) {
            configPolicyName = "Micro Service";
        } else if (policyAdapter.getPolicyName().startsWith("Config_OOF")) {
            configPolicyName = "Optimization";
        } else if (policyAdapter.getPolicyName().startsWith("Action")
                || policyAdapter.getPolicyName().startsWith("Decision")) {
            // No configPolicyName is applicable
        } else {
            configPolicyName = "Base";
        }
        return configPolicyName;
    }

    private void prePopulatePolicyData(PolicyRestAdapter policyAdapter, PolicyEntity entity) {
        if ("Base".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreatePolicyController().prePopulateBaseConfigPolicyData(policyAdapter, entity);
        } else if ("BRMS_Raw".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateBRMSRawController().prePopulateBRMSRawPolicyData(policyAdapter, entity);
        } else if ("BRMS_Param".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateBRMSParamController().prePopulateBRMSParamPolicyData(policyAdapter, entity);
        } else if ("ClosedLoop_Fault".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateClosedLoopFaultController().prePopulateClosedLoopFaultPolicyData(policyAdapter, entity);
        } else if ("ClosedLoop_PM".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateClosedLoopPMController().prePopulateClosedLoopPMPolicyData(policyAdapter, entity);
        } else if ("Micro Service".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateDcaeMicroServiceController().prePopulateDCAEMSPolicyData(policyAdapter, entity);
        } else if ("Optimization".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateOptimizationController().prePopulatePolicyData(policyAdapter, entity);
        } else if ("Firewall Config".equalsIgnoreCase(policyAdapter.getConfigPolicyType())) {
            new CreateFirewallController().prePopulateFWPolicyData(policyAdapter, entity);
        }
    }

    public static PolicyAdapter getInstance() {
        try {
            Class<?> policyAdapter = Class.forName(
                    XACMLProperties.getProperty("policyAdapter.impl.className", PolicyAdapter.class.getName()));
            return (PolicyAdapter) policyAdapter.newInstance();
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException
                | IllegalArgumentException e) {
            LOGGER.error("Exception Occurred" + e);
        }
        return null;
    }
}