/*
 * 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.conf;

import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

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

import at.gv.egiz.eaaf.core.api.data.EaafConfigConstants;
import at.gv.egiz.eaaf.core.api.data.EaafConstants;
import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
import at.gv.egiz.eaaf.core.api.idp.ISpConfiguration;
import at.gv.egiz.eaaf.core.impl.utils.KeyValueUtils;

public class SpConfigurationImpl implements ISpConfiguration {
  private static final long serialVersionUID = 688541755446463453L;

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

  private final Map<String, String> spConfiguration;
  private final Set<String> targetAreasWithNoInteralBaseIdRestriction;
  private final Set<String> targetAreasWithNoBaseIdTransmissionRestriction;

  /**
   * Service-provider configuration holder.
   *
   * @param spConfig   Key/value based configuration
   * @param authConfig Basic application configuration
   */
  public SpConfigurationImpl(final Map<String, String> spConfig, final IConfiguration authConfig) {
    this.spConfiguration = spConfig;

    // set oa specific restrictions
    targetAreasWithNoInteralBaseIdRestriction = Collections
        .unmodifiableSet(new HashSet<String>(KeyValueUtils.getListOfCsvValues(authConfig.getBasicConfiguration(
            CONFIG_KEY_RESTRICTIONS_BASEID_INTERNAL, EaafConstants.URN_PREFIX_CDID))));

    targetAreasWithNoBaseIdTransmissionRestriction = Collections
        .unmodifiableSet(new HashSet<String>(KeyValueUtils.getListOfCsvValues(authConfig.getBasicConfiguration(
            CONFIG_KEY_RESTRICTIONS_BASEID_TRANSMISSION, EaafConstants.URN_PREFIX_CDID))));

    if (log.isTraceEnabled()) {
      log.trace("Internal policy for OA: " + getUniqueIdentifier());
      targetAreasWithNoInteralBaseIdRestriction.stream()
          .forEach(el -> log.trace(" Allow baseID processing for prefix " + el));
      targetAreasWithNoBaseIdTransmissionRestriction.stream()
          .forEach(el -> log.trace(" Allow baseID transfer for prefix " + el));

    }
  }

  @Override
  public final Map<String, String> getFullConfiguration() {
    return this.spConfiguration;

  }

  @Override
  public final String getConfigurationValue(final String key) {
    if (key == null) {
      return null;
    } else {
      return this.spConfiguration.get(key);
    }

  }

  @Override
  public final String getConfigurationValue(final String key, final String defaultValue) {
    final String value = getConfigurationValue(key);
    if (value == null) {
      return defaultValue;
    } else {
      return value;
    }
  }

  @Override
  public final boolean isConfigurationValue(final String key) {
    return isConfigurationValue(key, false);

  }

  @Override
  public final boolean isConfigurationValue(final String key, final boolean defaultValue) {
    final String value = getConfigurationValue(key);
    if (value != null) {
      return Boolean.parseBoolean(value);

    }

    return defaultValue;
  }

  @Override
  public final boolean containsConfigurationKey(final String key) {
    if (key == null) {
      return false;
    } else {
      return this.spConfiguration.containsKey(key);
    }

  }

  @Override
  public String getUniqueIdentifier() {
    return getConfigurationValue(EaafConfigConstants.SERVICE_UNIQUEIDENTIFIER);

  }

  @Override
  public boolean hasBaseIdInternalProcessingRestriction() {
    return false;

  }

  @Override
  public boolean hasBaseIdTransferRestriction() {
    return true;

  }

  @Override
  public final Set<String> getTargetsWithNoBaseIdInternalProcessingRestriction() {
    return this.targetAreasWithNoInteralBaseIdRestriction;
  }

  @Override
  public final Set<String> getTargetsWithNoBaseIdTransferRestriction() {
    return this.targetAreasWithNoBaseIdTransmissionRestriction;
  }

  @Override
  public List<String> getRequiredLoA() {
    log.warn(
        "Method not implemented: " + SpConfigurationImpl.class.getName() + " 'getRequiredLoA()'");
    return null;
  }

  @Override
  public String getLoAMatchingMode() {
    log.warn("Method not implemented: " + SpConfigurationImpl.class.getName()
        + " 'getLoAMatchingMode()'");
    return null;
  }

  @Override
  public String getAreaSpecificTargetIdentifier() {
    log.warn("Method not implemented: " + SpConfigurationImpl.class.getName()
        + " 'getAreaSpecificTargetIdentifier()'");
    return null;
  }

  @Override
  public String getFriendlyName() {
    log.warn(
        "Method not implemented: " + SpConfigurationImpl.class.getName() + " 'getFriendlyName()'");
    return null;
  }

}