/*-
 * ============LICENSE_START=======================================================
 *  Copyright (C) 2019-2020 Nordix Foundation.
 * ================================================================================
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * ============LICENSE_END=========================================================
 */

package org.onap.policy.models.provider;

import java.util.Date;
import java.util.List;
import java.util.Map;
import lombok.NonNull;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.pdp.concepts.Pdp;
import org.onap.policy.models.pdp.concepts.PdpGroup;
import org.onap.policy.models.pdp.concepts.PdpGroupFilter;
import org.onap.policy.models.pdp.concepts.PdpStatistics;
import org.onap.policy.models.pdp.concepts.PdpSubGroup;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyFilter;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyType;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeFilter;
import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
import org.onap.policy.models.tosca.legacy.concepts.LegacyGuardPolicyInput;
import org.onap.policy.models.tosca.legacy.concepts.LegacyGuardPolicyOutput;
import org.onap.policy.models.tosca.legacy.concepts.LegacyOperationalPolicy;

/**
 * This interface describes the operations that are provided to users and components for reading objects from and
 * writing objects to the database.
 *
 * @author Liam Fallon (liam.fallon@est.tech)
 */
public interface PolicyModelsProvider extends AutoCloseable {
    /**
     * Open the policy model provider initializing whatever internal handling it needs.
     *
     * @throws PfModelException on errors opening the models provider
     */
    public void init() throws PfModelException;

    @Override
    public void close() throws PfModelException;

    /**
     * Get policy types.
     *
     * @param name the name of the policy type to get, set to null to get all policy types
     * @param version the version of the policy type to get, set to null to get all versions
     * @return the policy types found
     * @throws PfModelException on errors getting policy types
     */
    public ToscaServiceTemplate getPolicyTypes(final String name, final String version) throws PfModelException;

    /**
     * Get policy types.
     *
     * @param name the name of the policy type to get, set to null to get all policy types
     * @param version the version of the policy type to get, set to null to get all versions
     * @return the policy types found
     * @throws PfModelException on errors getting policy types
     */
    public List<ToscaPolicyType> getPolicyTypeList(final String name, final String version) throws PfModelException;

    /**
     * Get filtered policy types.
     *
     * @param filter the filter for the policy types to get
     * @return the policy types found
     * @throws PfModelException on errors getting policy types
     */
    public ToscaServiceTemplate getFilteredPolicyTypes(@NonNull final ToscaPolicyTypeFilter filter)
            throws PfModelException;

    /**
     * Get filtered policy types.
     *
     * @param filter the filter for the policy types to get
     * @return the policy types found
     * @throws PfModelException on errors getting policy types
     */
    public List<ToscaPolicyType> getFilteredPolicyTypeList(@NonNull final ToscaPolicyTypeFilter filter)
            throws PfModelException;

    /**
     * Create policy types.
     *
     * @param serviceTemplate the service template containing the definition of the policy types to be created
     * @return the TOSCA service template containing the created policy types
     * @throws PfModelException on errors creating policy types
     */
    public ToscaServiceTemplate createPolicyTypes(@NonNull final ToscaServiceTemplate serviceTemplate)
            throws PfModelException;

    /**
     * Create policy types.
     *
     * @param serviceTemplate the service template containing the definition of the policy types to be modified
     * @return the TOSCA service template containing the modified policy types
     * @throws PfModelException on errors updating policy types
     */
    public ToscaServiceTemplate updatePolicyTypes(@NonNull final ToscaServiceTemplate serviceTemplate)
            throws PfModelException;

    /**
     * Delete policy type.
     *
     * @param name the name of the policy type to delete.
     * @param version the version of the policy type to delete.
     * @return the TOSCA service template containing the policy type that was deleted
     * @throws PfModelException on errors deleting policy types
     */
    public ToscaServiceTemplate deletePolicyType(@NonNull final String name, @NonNull final String version)
            throws PfModelException;

    /**
     * Get policies.
     *
     * @param name the name of the policy to get, null to get all policies
     * @param version the version of the policy to get, null to get all versions of a policy
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public ToscaServiceTemplate getPolicies(final String name, final String version) throws PfModelException;

    /**
     * Get policies.
     *
     * @param name the name of the policy to get, null to get all policies
     * @param version the version of the policy to get, null to get all versions of a policy
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public List<ToscaPolicy> getPolicyList(final String name, final String version) throws PfModelException;

    /**
     * Get filtered policies.
     *
     * @param filter the filter for the policies to get
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public ToscaServiceTemplate getFilteredPolicies(@NonNull final ToscaPolicyFilter filter) throws PfModelException;

    /**
     * Get filtered policies.
     *
     * @param filter the filter for the policies to get
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public List<ToscaPolicy> getFilteredPolicyList(@NonNull final ToscaPolicyFilter filter) throws PfModelException;

    /**
     * Create policies.
     *
     * @param serviceTemplate the service template containing the definitions of the new policies to be created.
     * @return the TOSCA service template containing the policy types that were created
     * @throws PfModelException on errors creating policies
     */
    public ToscaServiceTemplate createPolicies(@NonNull final ToscaServiceTemplate serviceTemplate)
            throws PfModelException;

    /**
     * Update policies.
     *
     * @param serviceTemplate the service template containing the definitions of the policies to be updated.
     * @return the TOSCA service template containing the policies that were updated
     * @throws PfModelException on errors updating policies
     */
    public ToscaServiceTemplate updatePolicies(@NonNull final ToscaServiceTemplate serviceTemplate)
            throws PfModelException;

    /**
     * Delete policy.
     *
     * @param name the name of the policy to delete.
     * @param version the version of the policy to delete.
     * @return the TOSCA service template containing the policy that was deleted
     * @throws PfModelException on errors deleting a policy
     */
    public ToscaServiceTemplate deletePolicy(@NonNull final String name, @NonNull final String version)
            throws PfModelException;

    /**
     * Get legacy operational policy.
     *
     * @param policyId ID of the policy
     * @param policyVersion version of the policy, set to null to get the latest policy
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public LegacyOperationalPolicy getOperationalPolicy(@NonNull final String policyId, final String policyVersion)
            throws PfModelException;

    /**
     * Create legacy operational policy.
     *
     * @param legacyOperationalPolicy the definition of the policy to be created.
     * @return the created policy
     * @throws PfModelException on errors creating policies
     */
    public LegacyOperationalPolicy createOperationalPolicy(
            @NonNull final LegacyOperationalPolicy legacyOperationalPolicy) throws PfModelException;

    /**
     * Update legacy operational policy.
     *
     * @param legacyOperationalPolicy the definition of the policy to be updated
     * @return the updated policy
     * @throws PfModelException on errors updating policies
     */
    public LegacyOperationalPolicy updateOperationalPolicy(
            @NonNull final LegacyOperationalPolicy legacyOperationalPolicy) throws PfModelException;

    /**
     * Delete legacy operational policy.
     *
     * @param policyId ID of the policy.
     * @param policyVersion version of the policy
     * @return the deleted policy
     * @throws PfModelException on errors deleting policies
     */
    public LegacyOperationalPolicy deleteOperationalPolicy(@NonNull final String policyId,
            @NonNull final String policyVersion) throws PfModelException;

    /**
     * Get legacy guard policy.
     *
     * @param policyId ID of the policy
     * @param policyVersion version of the policy, set to null to get the latest policy
     * @return the policies found
     * @throws PfModelException on errors getting policies
     */
    public Map<String, LegacyGuardPolicyOutput> getGuardPolicy(@NonNull final String policyId,
            final String policyVersion) throws PfModelException;

    /**
     * Create legacy guard policy.
     *
     * @param legacyGuardPolicy the definition of the policy to be created.
     * @return the created policy
     * @throws PfModelException on errors creating policies
     */
    public Map<String, LegacyGuardPolicyOutput> createGuardPolicy(
            @NonNull final LegacyGuardPolicyInput legacyGuardPolicy) throws PfModelException;

    /**
     * Update legacy guard policy.
     *
     * @param legacyGuardPolicy the definition of the policy to be updated
     * @return the updated policy
     * @throws PfModelException on errors updating policies
     */
    public Map<String, LegacyGuardPolicyOutput> updateGuardPolicy(
            @NonNull final LegacyGuardPolicyInput legacyGuardPolicy) throws PfModelException;

    /**
     * Delete legacy guard policy.
     *
     * @param policyId ID of the policy.
     * @param policyVersion version of the policy
     * @return the deleted policy
     * @throws PfModelException on errors deleting policies
     */
    public Map<String, LegacyGuardPolicyOutput> deleteGuardPolicy(@NonNull final String policyId,
            @NonNull final String policyVersion) throws PfModelException;

    /**
     * Get PDP groups.
     *
     * @param name the name of the policy to get, null to get all PDP groups
     * @return the PDP groups found
     * @throws PfModelException on errors getting PDP groups
     */
    public List<PdpGroup> getPdpGroups(final String name) throws PfModelException;

    /**
     * Get filtered PDP groups.
     *
     * @param filter the filter for the PDP groups to get
     * @return the PDP groups found
     * @throws PfModelException on errors getting policies
     */
    public List<PdpGroup> getFilteredPdpGroups(@NonNull final PdpGroupFilter filter) throws PfModelException;

    /**
     * Creates PDP groups.
     *
     * @param pdpGroups a specification of the PDP groups to create
     * @return the PDP groups created
     * @throws PfModelException on errors creating PDP groups
     */
    public List<PdpGroup> createPdpGroups(@NonNull final List<PdpGroup> pdpGroups) throws PfModelException;

    /**
     * Updates PDP groups.
     *
     * @param pdpGroups a specification of the PDP groups to update
     * @return the PDP groups updated
     * @throws PfModelException on errors updating PDP groups
     */
    public List<PdpGroup> updatePdpGroups(@NonNull final List<PdpGroup> pdpGroups) throws PfModelException;

    /**
     * Update a PDP subgroup.
     *
     * @param pdpGroupName the name of the PDP group of the PDP subgroup
     * @param pdpSubGroup the PDP subgroup to be updated
     * @throws PfModelException on errors updating PDP subgroups
     */
    public void updatePdpSubGroup(@NonNull final String pdpGroupName, @NonNull final PdpSubGroup pdpSubGroup)
            throws PfModelException;

    /**
     * Update a PDP.
     *
     * @param pdpGroupName the name of the PDP group of the PDP subgroup
     * @param pdpSubGroup the PDP subgroup to be updated
     * @param pdp the PDP to be updated
     * @throws PfModelException on errors updating PDP subgroups
     */
    public void updatePdp(@NonNull final String pdpGroupName, @NonNull final String pdpSubGroup, @NonNull final Pdp pdp)
            throws PfModelException;

    /**
     * Delete a PDP group.
     *
     * @param name the name of the policy to get, null to get all PDP groups
     * @return the PDP group deleted
     * @throws PfModelException on errors deleting PDP groups
     */
    public PdpGroup deletePdpGroup(@NonNull final String name) throws PfModelException;

    /**
     * Get PDP statistics.
     *
     * @param name the name of the PDP group to get statistics for, null to get all PDP groups
     * @return the statistics found
     * @throws PfModelException on errors getting statistics
     */
    public List<PdpStatistics> getPdpStatistics(final String name, final Date timestamp) throws PfModelException;


    /**
     * Get filtered PdpStatistics.
     *
     * @param name the pdpInstance name for the PDP statistics to get
     * @param pdpGroupName pdpGroupName to filter statistics
     * @param pdpSubGroup pdpSubGroupType name to filter statistics
     * @param startTimeStamp startTimeStamp to filter statistics
     * @param endTimeStamp endTimeStamp to filter statistics
     * @param sortOrder sortOrder to query database
     * @param getRecordNum Total query count from database
     * @return the PDP statistics found
     * @throws PfModelException on errors getting policies
     */
    public List<PdpStatistics> getFilteredPdpStatistics(String name, @NonNull String pdpGroupName, String pdpSubGroup,
            Date startTimeStamp, Date endTimeStamp, String sortOrder, int getRecordNum) throws PfModelException;

    /**
     * Creates PDP statistics.
     *
     * @param pdpStatisticsList a specification of the PDP statistics to create
     * @return the PDP statistics created
     * @throws PfModelException on errors creating PDP statistics
     */
    public List<PdpStatistics> createPdpStatistics(@NonNull List<PdpStatistics> pdpStatisticsList)
            throws PfModelException;

    /**
     * Updates PDP statistics.
     *
     * @param pdpStatisticsList a specification of the PDP statistics to update
     * @return the PDP statistics updated
     * @throws PfModelException on errors updating PDP statistics
     */
    public List<PdpStatistics> updatePdpStatistics(@NonNull List<PdpStatistics> pdpStatisticsList)
            throws PfModelException;

    /**
     * Delete a PDP statistics.
     *
     * @param name the name of the policy to get, null to get all PDP statistics
     * @param timestamp the timestamp of statistics to delete, null to delete all statistics record of given pdp
     * @return the PDP statistics deleted
     * @throws PfModelException on errors deleting PDP statistics
     */
    public List<PdpStatistics> deletePdpStatistics(@NonNull String name, Date timestamp) throws PfModelException;
}