/*
 * Copyright 2021 A-SIT Plus GmbH
 * AT-specific eIDAS Connector has been developed in a cooperation between EGIZ,
 * A-SIT Plus GmbH, 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 "License");
 * You may not use this work except in compliance with the License.
 * You may obtain a copy of the License at:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * 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.
 *
 * 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.asitplus.eidas.specific.modules.auth.eidas.v2.tasks;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import at.asitplus.eidas.specific.core.MsEidasNodeConstants;
import at.asitplus.eidas.specific.core.gui.StaticGuiBuilderConfiguration;
import at.asitplus.eidas.specific.modules.auth.eidas.v2.Constants;
import at.asitplus.eidas.specific.modules.auth.eidas.v2.utils.MatchingTaskUtils;
import at.gv.egiz.eaaf.core.api.gui.ISpringMvcGuiFormBuilder;
import at.gv.egiz.eaaf.core.api.idp.IConfiguration;
import at.gv.egiz.eaaf.core.api.idp.process.ExecutionContext;
import at.gv.egiz.eaaf.core.exceptions.TaskExecutionException;
import at.gv.egiz.eaaf.core.impl.gui.AbstractGuiFormBuilderConfiguration;
import at.gv.egiz.eaaf.core.impl.idp.controller.tasks.AbstractLocaleAuthServletTask;
import lombok.extern.slf4j.Slf4j;

/**
 * Task that provides GUI for user to select an alternative login method.
 * This page is shown when the matching of the eIDAS data to ZMR/ERnP data is ambiguous.
 * This corresponds to Steps 10, 14, 16 in the eIDAS Matching Concept.
 * The response is handled in {@link ReceiveOtherLoginMethodGuiResponseTask}
 *
 * @author amarsalek
 * @author ckollmann
 */
@Slf4j
@Component("GenerateOtherLoginMethodGuiTask")
public class GenerateOtherLoginMethodGuiTask extends AbstractLocaleAuthServletTask {

  @Autowired
  private ISpringMvcGuiFormBuilder guiBuilder;

  @Autowired
  private IConfiguration basicConfig;

  @Override
  public void executeWithLocale(ExecutionContext executionContext, 
      HttpServletRequest request, HttpServletResponse response) throws TaskExecutionException {
    try {
      final StaticGuiBuilderConfiguration config = new StaticGuiBuilderConfiguration(
          basicConfig,
          pendingReq,
          basicConfig.getBasicConfiguration(
              MsEidasNodeConstants.PROP_CONFIG_WEBCONTENT_TEMPLATES_OTHER_LOGIN_METHOD_SELECTION,
              MsEidasNodeConstants.TEMPLATE_HTML_OTHERLOGINMETHODS),
          MsEidasNodeConstants.ENDPOINT_OTHER_LOGIN_METHOD_SELECTION,
          resourceLoader);

      // inject flag to indicate advanced matching error
      if (MatchingTaskUtils.getExecutionContextFlag(
          executionContext, Constants.CONTEXT_FLAG_ADVANCED_MATCHING_FAILED)) {
        config.putCustomParameter(AbstractGuiFormBuilderConfiguration.PARAM_GROUP_UIOPTIONS,
            Constants.HTML_FORM_ADVANCED_MATCHING_FAILED, String.valueOf(true));
        
        //set detailed error-code
        if (executionContext.get(Constants.CONTEXT_FLAG_ADVANCED_MATCHING_FAILED_REASON) != null) {
          config.putCustomParameter(AbstractGuiFormBuilderConfiguration.PARAM_GROUP_UIOPTIONS,
              Constants.HTML_FORM_ADVANCED_MATCHING_FAILED_REASON, 
              executionContext.get(Constants.CONTEXT_FLAG_ADVANCED_MATCHING_FAILED_REASON).toString());
        }       
      }
      
      // inject flag for matching-by-address allowed 
      config.putCustomParameter(AbstractGuiFormBuilderConfiguration.PARAM_GROUP_UIOPTIONS,
          Constants.HTML_FORM_ENABLE_MATCHING_BY_ADDRESS_SEARCH, 
          String.valueOf(basicConfig.getBasicConfigurationBoolean(Constants.CONFIG_PROP_MATCHING_BY_ADDRESS)));
                        
      // inject flag to show screen for last manual matching step
      config.putCustomParameter(AbstractGuiFormBuilderConfiguration.PARAM_GROUP_UIOPTIONS,
          Constants.HTML_FORM_WITH_CREATE_NEW_ERNP_ENTRY_OPTION, 
          String.valueOf(
              MatchingTaskUtils.getExecutionContextFlag(
                  executionContext,Constants.TRANSITION_TO_REQUESTING_NEW_ERNP_ENTRY_TASK)));
                          
      // inject flag to disallow new ERnP entry in case of 
      config.putCustomParameter(AbstractGuiFormBuilderConfiguration.PARAM_GROUP_UIOPTIONS,
          Constants.HTML_FORM_DISALLOW_CREATENEW_ERNP_ENTRY, 
          String.valueOf(!MatchingTaskUtils.getIntermediateMatchingResult(pendingReq)
              .getOperationStatus().isAllowErnpEntryByUser()));
      
      
      // reset executionContext parameters
      ReceiveOtherLoginMethodGuiResponseTask.ALL_EXECUTIONCONTEXT_PARAMETERS.forEach(
          el -> executionContext.remove(el));
                  
      // store pending request before next step
      requestStoreage.storePendingRequest(pendingReq);
      
      log.info("Show manual GUI matching {} option to add ERnP entry",
          MatchingTaskUtils.getExecutionContextFlag(
              executionContext,Constants.TRANSITION_TO_REQUESTING_NEW_ERNP_ENTRY_TASK)
          ? "with" : "without");
      
      guiBuilder.build(request, response, config, "Other login methods selection form");

    } catch (final Exception e) {
      log.error("Initial search FAILED.", e);
      throw new TaskExecutionException(pendingReq, "Gui creation FAILED.", e);
    }
  }

}