/*
    * 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.scheduler;
  
  import static org.codelibs.fess.app.web.admin.scheduler.AdminSchedulerAction.getScheduledJob;
  
  import java.util.List;
  import java.util.Map;
  import java.util.UUID;
  import java.util.stream.Collectors;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.codelibs.fess.Constants;
  import org.codelibs.fess.app.pager.SchedulerPager;
  import org.codelibs.fess.app.service.ScheduledJobService;
  import org.codelibs.fess.app.web.CrudMode;
  import org.codelibs.fess.app.web.api.ApiResult;
  import org.codelibs.fess.app.web.api.ApiResult.ApiResponse;
  import org.codelibs.fess.app.web.api.ApiResult.Status;
  import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
  import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;
  import org.lastaflute.web.Execute;
  import org.lastaflute.web.response.HtmlResponse;
  import org.lastaflute.web.response.JsonResponse;
  
  import jakarta.annotation.Resource;
  
  /**
   * API action for admin scheduler management.
   */
  public class ApiAdminSchedulerAction extends FessApiAdminAction {
  
      /** The logger for this class. */
      private static final Logger logger = LogManager.getLogger(ApiAdminSchedulerAction.class);
  
      // ===================================================================================
      //                                                                         Constructor
      //                                                                         ===========
      /**
       * Default constructor.
       */
      public ApiAdminSchedulerAction() {
          super();
      }
  
      // ===================================================================================
      //                                                                           Attribute
      //                                                                           =========
  
      /** The scheduled job service for managing scheduler settings. */
      @Resource
      private ScheduledJobService scheduledJobService;
  
      /**
       * Index page (not supported for API).
       *
       * @return throws UnsupportedOperationException
       */
      @Execute
      public HtmlResponse index() {
          throw new UnsupportedOperationException("index() is not supported in API. Use the admin UI instead.");
      }
  
      /**
       * Starts a scheduled job by ID.
       * When job logging is enabled, a pre-generated job log ID is returned in the response
       * as {@code jobLogId}. When job logging is disabled, {@code jobLogId} is {@code null}.
       *
       * @param id the ID of the scheduled job to start
       * @return JSON response with {@code jobLogId} (nullable) and status
       */
      // PUT /api/admin/scheduler/{id}/start
      @Execute(urlPattern = "{}/@word")
      public JsonResponse<ApiResult> put$start(final String id) {
          final String[] jobLogId = { null };
          scheduledJobService.getScheduledJob(id).ifPresent(entity -> {
              if (!entity.isEnabled() || entity.isRunning()) {
                  throwValidationErrorApi(messages -> {
                      messages.addErrorsFailedToStartJob(GLOBAL, entity.getName());
                  });
              }
              try {
                  if (entity.isLoggingEnabled()) {
                      jobLogId[0] = UUID.randomUUID().toString().replace("-", "");
                      entity.start(Map.of(Constants.JOB_LOG_ID, jobLogId[0]));
                 } else {
                     entity.start();
                 }
             } catch (final Exception e) {
                 throwValidationErrorApi(messages -> {
                     messages.addErrorsFailedToStartJob(GLOBAL, entity.getName());
                 });
             }
         }).orElse(() -> {
             throwValidationErrorApi(messages -> {
                 messages.addErrorsFailedToStartJob(GLOBAL, id);
             });
         });
         return asJson(new ApiResult.ApiStartJobResponse().jobLogId(jobLogId[0]).status(Status.OK).result());
     }
 
     /**
      * Stops a scheduled job by ID.
      *
      * @param id the ID of the scheduled job to stop
      * @return JSON response indicating success or failure
      */
     // PUT /api/admin/scheduler/{id}/stop
     @Execute(urlPattern = "{}/@word")
     public JsonResponse<ApiResult> put$stop(final String id) {
         scheduledJobService.getScheduledJob(id).ifPresent(entity -> {
             try {
                 entity.stop();
             } catch (final Exception e) {
                 logger.warn("Failed to process a request.", e);
                 throwValidationErrorApi(messages -> {
                     messages.addErrorsFailedToStopJob(GLOBAL, entity.getName());
                 });
             }
         }).orElse(() -> {
             throwValidationErrorApi(messages -> {
                 messages.addErrorsFailedToStartJob(GLOBAL, id);
             });
         });
         return asJson(new ApiResponse().status(Status.OK).result());
     }
 
     /**
      * Retrieves scheduler settings with pagination.
      *
      * @param body the search parameters for filtering and pagination
      * @return JSON response containing scheduler settings list
      */
     // GET /api/admin/scheduler
     // PUT /api/admin/scheduler
     @Execute
     public JsonResponse<ApiResult> settings(final SearchBody body) {
         validateApi(body, messages -> {});
         final SchedulerPager pager = copyBeanToNewBean(body, SchedulerPager.class);
         final List<ScheduledJob> list = scheduledJobService.getScheduledJobList(pager);
         return asJson(
                 new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                         .total(pager.getAllRecordCount())
                         .status(ApiResult.Status.OK)
                         .result());
     }
 
     /**
      * Retrieves a specific scheduler setting by ID.
      *
      * @param id the ID of the scheduler setting to retrieve
      * @return JSON response containing the scheduler setting
      */
     // GET /api/admin/scheduler/setting/{id}
     @Execute
     public JsonResponse<ApiResult> get$setting(final String id) {
         return asJson(new ApiResult.ApiConfigResponse()
                 .setting(scheduledJobService.getScheduledJob(id).map(this::createEditBody).orElseGet(() -> {
                     throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
                     return null;
                 }))
                 .status(ApiResult.Status.OK)
                 .result());
     }
 
     /**
      * Creates a new scheduler setting.
      *
      * @param body the scheduler data to create
      * @return JSON response containing the created scheduler setting ID
      */
     // POST /api/admin/scheduler/setting
     @Execute
     public JsonResponse<ApiResult> post$setting(final CreateBody body) {
         validateApi(body, messages -> {});
         body.crudMode = CrudMode.CREATE;
         final ScheduledJob entity = getScheduledJob(body).orElseGet(() -> {
             throwValidationErrorApi(messages -> {
                 messages.addErrorsCrudFailedToCreateInstance(GLOBAL);
             });
             return null;
         });
         try {
             scheduledJobService.store(entity);
             saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
         } catch (final Exception e) {
             logger.warn("Failed to process a request.", e);
             throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)));
         }
         return asJson(new ApiResult.ApiUpdateResponse().id(entity.getId()).created(true).status(ApiResult.Status.OK).result());
     }
 
     /**
      * Updates an existing scheduler setting.
      *
      * @param body the scheduler data to update
      * @return JSON response containing the updated scheduler setting ID
      */
     // PUT /api/admin/scheduler/setting
     @Execute
     public JsonResponse<ApiResult> put$setting(final EditBody body) {
         validateApi(body, messages -> {});
         body.crudMode = CrudMode.EDIT;
         final ScheduledJob entity = getScheduledJob(body).orElseGet(() -> {
             throwValidationErrorApi(messages -> {
                 messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, body.id);
             });
             return null;
         });
         try {
             scheduledJobService.store(entity);
         } catch (final Exception e) {
             logger.warn("Failed to process a request.", e);
             throwValidationErrorApi(messages -> messages.addErrorsCrudFailedToUpdateCrudTable(GLOBAL, buildThrowableMessage(e)));
         }
         return asJson(new ApiResult.ApiUpdateResponse().id(entity.getId()).created(false).status(ApiResult.Status.OK).result());
     }
 
     /**
      * Deletes a scheduler setting by ID.
      *
      * @param id the ID of the scheduler setting to delete
      * @return JSON response indicating success or failure
      */
     // DELETE /api/admin/scheduler/setting/{id}
     @Execute
     public JsonResponse<ApiResult> delete$setting(final String id) {
         final ScheduledJob entity = scheduledJobService.getScheduledJob(id).orElseGet(() -> {
             throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
             return null;
         });
         try {
             scheduledJobService.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)));
         }
         return asJson(new ApiResult.ApiUpdateResponse().id(id).created(false).status(ApiResult.Status.OK).result());
     }
 
     /**
      * Creates an EditBody from a ScheduledJob entity.
      *
      * @param entity the scheduled job entity to convert
      * @return the converted EditBody
      */
     protected EditBody createEditBody(final ScheduledJob entity) {
         final EditBody body = new EditBody();
         copyBeanToBean(entity, body, op -> op.exclude(Constants.COMMON_CONVERSION_RULE));
         body.running = entity.isRunning();
         return body;
     }
 
 }