/*
 * Copyright 2021 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 * 
 * 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.
 */
package org.keycloak.testsuite.model.storage.tree.sample;

import org.keycloak.models.KeycloakSession;
import org.keycloak.models.map.common.AbstractEntity;
import org.keycloak.models.map.common.DeepCloner;
import org.keycloak.models.map.storage.MapKeycloakTransaction;
import org.keycloak.models.map.storage.MapStorage;
import org.keycloak.models.map.storage.QueryParameters;
import java.util.List;
import java.util.Objects;
import java.util.stream.Stream;

/**
 *
 * @author hmlnarik
 */
public class DictStorage<V extends AbstractEntity, M> implements MapStorage<V, M> {

    private final DeepCloner cloner;

    private final List<V> store;

     public DictStorage(DeepCloner cloner, List<V> store) {
        this.cloner = cloner;
        this.store = store;
    }

    List<V> getStore() {
        return store;
    }

    private final class Transaction implements MapKeycloakTransaction<V, M> {

        @Override
        public V create(V value) {
            V res = cloner.from(value);
            store.add(res);
            return res;
        }

        @Override
        public V read(String key) {
            return store.stream()
              .filter(e -> Objects.equals(e.getId(), key))
              .findFirst()
              .orElse(null);
        }

        @Override
        public Stream<V> read(QueryParameters<M> queryParameters) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public long getCount(QueryParameters<M> queryParameters) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public boolean delete(String key) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public long delete(QueryParameters<M> queryParameters) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public void begin() {
        }

        @Override
        public void commit() {
        }

        @Override
        public void rollback() {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public void setRollbackOnly() {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

        @Override
        public boolean getRollbackOnly() {
            return false;
        }

        @Override
        public boolean isActive() {
            return true;
        }

    }

    @Override
    public MapKeycloakTransaction<V, M> createTransaction(KeycloakSession session) {
        return new Transaction();
    }

}
