/*
    * Copyright 2012-2025 CodeLibs Project and the Others.
    *
    * 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.codelibs.fess.app.web.api.admin.fileconfig;
  
  import static org.codelibs.core.stream.StreamUtil.stream;
  import static org.codelibs.fess.app.web.admin.fileconfig.AdminFileconfigAction.getFileConfig;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.codelibs.core.lang.StringUtil;
  import org.codelibs.fess.Constants;
  import org.codelibs.fess.app.pager.FileConfigPager;
  import org.codelibs.fess.app.service.FileConfigService;
  import org.codelibs.fess.app.web.CrudMode;
  import org.codelibs.fess.app.web.api.ApiResult;
  import org.codelibs.fess.app.web.api.ApiResult.ApiConfigResponse;
  import org.codelibs.fess.app.web.api.ApiResult.ApiResponse;
  import org.codelibs.fess.app.web.api.ApiResult.ApiUpdateResponse;
  import org.codelibs.fess.app.web.api.ApiResult.Status;
  import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
  import org.codelibs.fess.helper.PermissionHelper;
  import org.codelibs.fess.opensearch.config.exentity.FileConfig;
  import org.codelibs.fess.util.ComponentUtil;
  import org.lastaflute.web.Execute;
  import org.lastaflute.web.response.JsonResponse;
  
  import jakarta.annotation.Resource;
  
  /**
   * API action for admin file configuration management.
   * Provides RESTful API endpoints for managing file crawling configuration settings in the Fess search engine.
   * File configurations define settings for crawling file systems, FTP servers, and other file-based data sources.
   *
   */
  public class ApiAdminFileconfigAction extends FessApiAdminAction {
  
      private static final Logger logger = LogManager.getLogger(ApiAdminFileconfigAction.class);
  
      // ===================================================================================
      //                                                                         Constructor
      //                                                                         ===========
      /**
       * Default constructor.
       */
      public ApiAdminFileconfigAction() {
          super();
      }
  
      // ===================================================================================
      //                                                                           Attribute
      //                                                                           =========
      /** Service for managing file configuration settings */
      @Resource
      private FileConfigService fileConfigService;
  
      // ===================================================================================
      //                                                                      Search Execute
      //                                                                      ==============
  
      // GET /api/admin/fileconfig/settings
      // PUT /api/admin/fileconfig/settings
      /**
       * Returns list of file configuration settings.
       * Supports both GET and PUT requests for retrieving paginated file configuration settings.
       *
       * @param body search parameters for filtering and pagination
       * @return JSON response containing file configuration settings list with pagination info
       */
      @Execute
      public JsonResponse<ApiResult> settings(final SearchBody body) {
          validateApi(body, messages -> {});
          final FileConfigPager pager = copyBeanToNewBean(body, FileConfigPager.class);
          final List<FileConfig> list = fileConfigService.getFileConfigList(pager);
          return asJson(
                  new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                          .total(pager.getAllRecordCount())
                          .status(ApiResult.Status.OK)
                          .result());
      }
  
      // GET /api/admin/fileconfig/setting/{id}
      /**
       * Returns specific file configuration setting by ID.
      *
      * @param id the file configuration setting ID
      * @return JSON response containing the file configuration setting details
      */
     @Execute
     public JsonResponse<ApiResult> get$setting(final String id) {
         return asJson(new ApiConfigResponse().setting(fileConfigService.getFileConfig(id).map(this::createEditBody).orElseGet(() -> {
             throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
             return null;
         })).status(Status.OK).result());
     }
 
     // POST /api/admin/fileconfig/setting
     /**
      * Creates a new file configuration setting.
      *
      * @param body file configuration setting data to create
      * @return JSON response with created setting ID and status
      */
     @Execute
     public JsonResponse<ApiResult> post$setting(final CreateBody body) {
         validateApi(body, messages -> {});
         body.crudMode = CrudMode.CREATE;
         final FileConfig fileConfig = getFileConfig(body).map(entity -> {
             try {
                 fileConfigService.store(entity);
             } catch (final Exception e) {
                 logger.warn("Failed to process a request.", e);
                 throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
             }
             return entity;
         }).orElseGet(() -> {
             throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL));
             return null;
         });
 
         return asJson(new ApiUpdateResponse().id(fileConfig.getId()).created(true).status(Status.OK).result());
     }
 
     // PUT /api/admin/fileconfig/setting
     /**
      * Updates an existing file configuration setting.
      *
      * @param body file configuration setting data to update
      * @return JSON response with updated setting ID and status
      */
     @Execute
     public JsonResponse<ApiResult> put$setting(final EditBody body) {
         validateApi(body, messages -> {});
         body.crudMode = CrudMode.EDIT;
         final FileConfig fileConfig = getFileConfig(body).map(entity -> {
             try {
                 fileConfigService.store(entity);
             } catch (final Exception e) {
                 logger.warn("Failed to process a request.", e);
                 throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToUpdateCrudTable(GLOBAL, buildThrowableMessage(e)));
             }
             return entity;
         }).orElseGet(() -> {
             throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, body.id));
             return null;
         });
         return asJson(new ApiUpdateResponse().id(fileConfig.getId()).created(false).status(Status.OK).result());
     }
 
     // DELETE /api/admin/fileconfig/setting/{id}
     /**
      * Deletes a specific file configuration setting.
      *
      * @param id the file configuration setting ID to delete
      * @return JSON response with deletion status
      */
     @Execute
     public JsonResponse<ApiResult> delete$setting(final String id) {
         fileConfigService.getFileConfig(id).ifPresent(entity -> {
             try {
                 fileConfigService.delete(entity);
                 saveInfo(messages -> messages.addSuccessCrudDeleteCrudTable(GLOBAL));
             } catch (final Exception e) {
                 logger.warn("Failed to process a request.", e);
                 throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToDeleteCrudTable(GLOBAL, buildThrowableMessage(e)));
             }
         }).orElse(() -> {
             throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
         });
         return asJson(new ApiResponse().status(Status.OK).result());
     }
 
     /**
      * Creates an edit body from a file configuration entity for API responses.
      * Processes permissions and virtual hosts for proper display formatting.
      *
      * @param entity the file configuration entity to convert
      * @return edit body containing the entity data
      */
     protected EditBody createEditBody(final FileConfig entity) {
         final EditBody body = new EditBody();
         copyBeanToBean(entity, body, copyOp -> {
             copyOp.excludeNull();
             copyOp.exclude(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS);
         });
         final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
         body.permissions = stream(entity.getPermissions()).get(stream -> stream.map(s -> permissionHelper.decode(s))
                 .filter(StringUtil::isNotBlank)
                 .distinct()
                 .collect(Collectors.joining("\n")));
         body.virtualHosts = stream(entity.getVirtualHosts())
                 .get(stream -> stream.filter(StringUtil::isNotBlank).distinct().map(String::trim).collect(Collectors.joining("\n")));
         return body;
     }
 }