/*
 * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
 * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the European
 * Commission - subsequent versions of the EUPL (the "Licence"); You may not use this work except in
 * compliance with the Licence. You may obtain a copy of the Licence at:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence
 * is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the Licence for the specific language governing permissions and limitations under
 * the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text file for details on the
 * various modules and licenses. The "NOTICE" text file is part of the distribution. Any derivative
 * works that you distribute must include a readable copy of the "NOTICE" text file.
*/

package at.gv.egiz.eaaf.core.impl.idp.process.spring.test;

import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import javax.sql.DataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.gv.egiz.eaaf.core.api.storage.ITransactionStorage;
import at.gv.egiz.eaaf.core.exceptions.EaafException;

/**
 * Dummy DataSource implementation for convenience in test cases where a
 * database connection will never actually be acquired.
 *
 * @see DataSource
 * @author Chris Beams
 */
public class DummyTransactionStorage implements ITransactionStorage {

  private static final Logger log = LoggerFactory.getLogger(DummyTransactionStorage.class);

  public class DummyDbEntry {
    public DummyDbEntry(final String key, final Object value) {
      this.obj = value;
      this.key = key;
    }

    public String getKey() {
      return key;
    }

    public void setKey(final String key) {
      this.key = key;
    }

    public Object getObj() {
      return obj;
    }

    public void setObj(final Object obj) {
      this.obj = obj;
    }

    private String key;
    private Object obj;
  }

  private final ArrayList<DummyDbEntry> ds = new ArrayList<>();

  @Override
  public boolean containsKey(final String key) {
    // TODO Auto-generated method stub
    final Iterator<DummyDbEntry> it = ds.iterator();
    while (it.hasNext()) {
      final DummyDbEntry t = it.next();
      if (t.getKey().equals(key)) {
        return true;
      }
    }
    return false;
  }

  @Override
  public void put(final String key, final Object value, final int timeout) throws EaafException {
    // TODO Auto-generated method stub
    this.remove(key);
    this.ds.add(new DummyDbEntry(key, value));

  }

  @Override
  public Object get(final String key) throws EaafException {
    // TODO Auto-generated method stub
    final Iterator<DummyDbEntry> it = ds.iterator();
    while (it.hasNext()) {
      final DummyDbEntry t = it.next();
      if (t.getKey().equals(key)) {
        return t;
      }
    }
    return null;
  }

  @Override
  public <T> T get(final String key, final Class<T> clazz) throws EaafException {

    final DummyDbEntry o = (DummyDbEntry) get(key);
    if (o == null) {
      return null;
    }
    try {
      @SuppressWarnings("unchecked")
      final T test = clazz.cast(o.getObj());
      return test;

    } catch (final Exception e) {
      log.warn("Sessioninformation Cast-Exception by using Artifact=" + key);
      throw new EaafException("Sessioninformation Cast-Exception");

    }
  }

  @Override
  public <T> T get(final String key, final Class<T> clazz, final long dataTimeOut)
      throws EaafException {
    // TODO Auto-generated method stub
    return get(key, clazz);
  }

  @Override
  public void changeKey(final String oldKey, final String newKey, final Object value)
      throws EaafException {
    this.remove(oldKey);
    this.put(newKey, value, -1);

  }

  @Override
  public void remove(final String key) {
    final Iterator<DummyDbEntry> it = ds.iterator();
    while (it.hasNext()) {
      final DummyDbEntry t = it.next();
      if (t.getKey().equals(key)) {
        this.ds.remove(t);
        return;
      }
    }

  }

  @Override
  public List<String> clean(final Date now, final long dataTimeOut) {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public Object getRaw(final String key) throws EaafException {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public void putRaw(final String key, final Object element) throws EaafException {
    // TODO Auto-generated method stub

  }

  // @Override
  // public Object getAssertionStore(String key) throwsEAAFException {
  // // TODO Auto-generated method stub
  // return null;
  // }
  //
  // @Override
  // public void putAssertionStore(Object element) throws EAAFException {
  // // TODO Auto-generated method stub
  //
  // }

}