/*
    * 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.admin.webconfig;
  
  import static org.codelibs.core.stream.StreamUtil.split;
  import static org.codelibs.core.stream.StreamUtil.stream;
  
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  
  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.annotation.Secured;
  import org.codelibs.fess.app.pager.WebConfigPager;
  import org.codelibs.fess.app.service.LabelTypeService;
  import org.codelibs.fess.app.service.RoleTypeService;
  import org.codelibs.fess.app.service.ScheduledJobService;
  import org.codelibs.fess.app.service.WebConfigService;
  import org.codelibs.fess.app.web.CrudMode;
  import org.codelibs.fess.app.web.base.FessAdminAction;
  import org.codelibs.fess.helper.PermissionHelper;
  import org.codelibs.fess.helper.SystemHelper;
  import org.codelibs.fess.opensearch.config.exentity.CrawlingConfig.ConfigType;
  import org.codelibs.fess.opensearch.config.exentity.WebConfig;
  import org.codelibs.fess.util.ComponentUtil;
  import org.codelibs.fess.util.RenderDataUtil;
  import org.dbflute.optional.OptionalEntity;
  import org.dbflute.optional.OptionalThing;
  import org.lastaflute.web.Execute;
  import org.lastaflute.web.response.HtmlResponse;
  import org.lastaflute.web.response.render.RenderData;
  import org.lastaflute.web.ruts.process.ActionRuntime;
  
  import jakarta.annotation.Resource;
  
  /**
   * Admin action for Web Config management.
   *
   */
  public class AdminWebconfigAction extends FessAdminAction {
  
      /**
       * Default constructor.
       */
      public AdminWebconfigAction() {
          super();
      }
  
      /** Role name for admin web config operations */
      public static final String ROLE = "admin-webconfig";
  
      private static final Logger logger = LogManager.getLogger(AdminWebconfigAction.class);
  
      // ===================================================================================
      //                                                                           Attribute
      //                                                                           =========
      @Resource
      private WebConfigService webConfigService;
      @Resource
      private ScheduledJobService scheduledJobService;
      @Resource
      private WebConfigPager webConfigPager;
      @Resource
      private RoleTypeService roleTypeService;
      @Resource
      private LabelTypeService labelTypeService;
  
      // ===================================================================================
      //                                                                               Hook
      //                                                                              ======
      @Override
      protected void setupHtmlData(final ActionRuntime runtime) {
          super.setupHtmlData(runtime);
          runtime.registerData("helpLink", systemHelper.getHelpLink(fessConfig.getOnlineHelpNameWebconfig()));
      }
  
      @Override
      protected String getActionRole() {
          return ROLE;
      }
  
      // ===================================================================================
      //                                                                      Search Execute
      //                                                                      ==============
     /**
      * Displays the web config management index page.
      *
      * @param form the search form for filtering
      * @return HTML response for the web config list page
      */
     @Execute
     @Secured({ ROLE, ROLE + VIEW })
     public HtmlResponse index(final SearchForm form) {
         return asListHtml();
     }
 
     /**
      * Displays a paginated list of web crawler configurations.
      *
      * @param pageNumber the page number to display (optional)
      * @param form the search form containing filter criteria
      * @return HTML response with the web config list
      */
     @Execute
     @Secured({ ROLE, ROLE + VIEW })
     public HtmlResponse list(final OptionalThing<Integer> pageNumber, final SearchForm form) {
         pageNumber.ifPresent(num -> {
             webConfigPager.setCurrentPageNumber(pageNumber.get());
         }).orElse(() -> {
             webConfigPager.setCurrentPageNumber(0);
         });
         return asHtml(path_AdminWebconfig_AdminWebconfigJsp).renderWith(data -> {
             searchPaging(data, form);
         });
     }
 
     /**
      * Searches for web crawler configurations based on the provided search criteria.
      *
      * @param form the search form containing search criteria
      * @return HTML response with filtered web config results
      */
     @Execute
     @Secured({ ROLE, ROLE + VIEW })
     public HtmlResponse search(final SearchForm form) {
         copyBeanToBean(form, webConfigPager, op -> op.exclude(Constants.PAGER_CONVERSION_RULE));
         return asHtml(path_AdminWebconfig_AdminWebconfigJsp).renderWith(data -> {
             searchPaging(data, form);
         });
     }
 
     /**
      * Resets the search criteria and displays all web crawler configurations.
      *
      * @param form the search form to reset
      * @return HTML response with the reset web config list
      */
     @Execute
     @Secured({ ROLE, ROLE + VIEW })
     public HtmlResponse reset(final SearchForm form) {
         webConfigPager.clear();
         return asHtml(path_AdminWebconfig_AdminWebconfigJsp).renderWith(data -> {
             searchPaging(data, form);
         });
     }
 
     /**
      * Sets up pagination data for the web config search results.
      * Registers web config items and restores search criteria from the pager.
      *
      * @param data the render data to populate with search results
      * @param form the search form containing filter criteria
      */
     protected void searchPaging(final RenderData data, final SearchForm form) {
         RenderDataUtil.register(data, "webConfigItems", webConfigService.getWebConfigList(webConfigPager)); // page navi
 
         // restore from webConfigPager
         copyBeanToBean(webConfigPager, form, op -> op.include("id", "name", "urls", "description"));
     }
 
     // ===================================================================================
     //                                                                        Edit Execute
     //                                                                        ============
     // -----------------------------------------------------
     //                                            Entry Page
     //                                            ----------
     /**
      * Displays the form for creating a new web crawler configuration.
      *
      * @return HTML response for the web config creation form
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse createnew() {
         saveToken();
         return asEditHtml().useForm(CreateForm.class, op -> {
             op.setup(form -> {
                 form.initialize();
                 ComponentUtil.getCrawlingConfigHelper().getDefaultConfig(ConfigType.WEB).ifPresent(entity -> {
                     copyBeanToBean(entity, form, copyOp -> {
                         copyOp.excludeNull();
                         copyOp.exclude(Stream.concat(Stream.of(Constants.COMMON_CONVERSION_RULE),
                                 Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS)).toArray(n -> new String[n]));
                     });
                     final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
                     form.permissions = stream(entity.getPermissions()).get(stream -> stream.map(s -> permissionHelper.decode(s))
                             .filter(StringUtil::isNotBlank)
                             .distinct()
                             .collect(Collectors.joining("\n")));
                     form.virtualHosts = stream(entity.getVirtualHosts())
                             .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));
                     form.name = null;
                 });
                 form.crudMode = CrudMode.CREATE;
             });
         });
     }
 
     /**
      * Displays the form for duplicating an existing web crawler configuration.
      *
      * @param id the ID of the web config to duplicate
      * @return HTML response for the web config creation form pre-populated with duplicated values
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse duplicate(final String id) {
         saveToken();
         return asEditHtml().useForm(CreateForm.class, op -> {
             op.setup(form -> {
                 form.initialize();
                 webConfigService.getWebConfig(id).ifPresent(entity -> {
                     copyBeanToBean(entity, form, copyOp -> {
                         copyOp.excludeNull();
                         copyOp.exclude(Stream.concat(Stream.of(Constants.COMMON_CONVERSION_RULE),
                                 Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS)).toArray(n -> new String[n]));
                     });
                     final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
                     form.permissions = stream(entity.getPermissions()).get(stream -> stream.map(s -> permissionHelper.decode(s))
                             .filter(StringUtil::isNotBlank)
                             .distinct()
                             .collect(Collectors.joining("\n")));
                     form.virtualHosts = stream(entity.getVirtualHosts())
                             .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));
                     form.name = null;
                 }).orElse(() -> {
                     throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
                 });
                 form.crudMode = CrudMode.CREATE;
             });
         });
     }
 
     /**
      * Displays the form for editing an existing web crawler configuration.
      *
      * @param form the edit form containing web config ID
      * @return HTML response for the web config edit form
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse edit(final EditForm form) {
         validate(form, messages -> {}, this::asListHtml);
         final String id = form.id;
         webConfigService.getWebConfig(id).ifPresent(entity -> {
             copyBeanToBean(entity, form, copyOp -> {
                 copyOp.excludeNull();
                 copyOp.exclude(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS);
             });
             final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
             form.permissions = stream(entity.getPermissions()).get(stream -> stream.map(s -> permissionHelper.decode(s))
                     .filter(StringUtil::isNotBlank)
                     .distinct()
                     .collect(Collectors.joining("\n")));
             form.virtualHosts = stream(entity.getVirtualHosts())
                     .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));
         }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
         });
         saveToken();
         if (form.crudMode.intValue() == CrudMode.EDIT) {
             // back
             form.crudMode = CrudMode.DETAILS;
             return asDetailsHtml();
         }
         form.crudMode = CrudMode.EDIT;
         return asEditHtml();
     }
 
     // -----------------------------------------------------
     //                                               Details
     //                                               -------
     /**
      * Displays the details of a web crawler configuration.
      *
      * @param crudMode the CRUD mode for the operation
      * @param id the ID of the web config to display
      * @return HTML response for the web config details page
      */
     @Execute
     @Secured({ ROLE, ROLE + VIEW })
     public HtmlResponse details(final int crudMode, final String id) {
         verifyCrudMode(crudMode, CrudMode.DETAILS, this::asListHtml);
         saveToken();
         return asDetailsHtml().useForm(EditForm.class, op -> {
             op.setup(form -> {
                 webConfigService.getWebConfig(id).ifPresent(entity -> {
                     copyBeanToBean(entity, form, copyOp -> {
                         copyOp.excludeNull();
                         copyOp.exclude(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS);
                     });
                     final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
                     form.permissions = stream(entity.getPermissions()).get(stream -> stream.map(s -> permissionHelper.decode(s))
                             .filter(StringUtil::isNotBlank)
                             .distinct()
                             .collect(Collectors.joining("\n")));
                     form.virtualHosts = stream(entity.getVirtualHosts())
                             .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));
                     form.crudMode = crudMode;
                 }).orElse(() -> {
                     throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
                 });
             });
         });
     }
 
     // -----------------------------------------------------
     //                                         Actually Crud
     //                                         -------------
     /**
      * Creates a new web crawler configuration.
      *
      * @param form the create form containing the new web config data
      * @return HTML response redirecting to the list page after creation
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse create(final CreateForm form) {
         verifyCrudMode(form.crudMode, CrudMode.CREATE, this::asListHtml);
         validate(form, messages -> {}, this::asEditHtml);
         verifyToken(this::asEditHtml);
         getWebConfig(form).ifPresent(entity -> {
             try {
                 webConfigService.store(entity);
                 saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
                 logger.info("Created web config: {}", entity.getName());
             } catch (final Exception e) {
                 logger.warn("Failed to create web config: {}", form.name, e);
                 throwValidationError(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)),
                         this::asEditHtml);
             }
         }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL), this::asEditHtml);
         });
         return redirect(getClass());
     }
 
     /**
      * Updates an existing web crawler configuration.
      *
      * @param form the edit form containing the updated web config data
      * @return HTML response redirecting to the list page after update
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse update(final EditForm form) {
         verifyCrudMode(form.crudMode, CrudMode.EDIT, this::asListHtml);
         validate(form, messages -> {}, this::asEditHtml);
         verifyToken(this::asEditHtml);
         getWebConfig(form).ifPresent(entity -> {
             try {
                 webConfigService.store(entity);
                 saveInfo(messages -> messages.addSuccessCrudUpdateCrudTable(GLOBAL));
                 logger.info("Updated web config: {}", entity.getName());
             } catch (final Exception e) {
                 logger.warn("Failed to update web config: {}", form.name, e);
                 throwValidationError(messages -> messages.addErrorsCrudFailedToUpdateCrudTable(GLOBAL, buildThrowableMessage(e)),
                         this::asEditHtml);
             }
         }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, form.id), this::asEditHtml);
         });
         return redirect(getClass());
     }
 
     /**
      * Deletes a web crawler configuration.
      *
      * @param form the edit form containing the ID of the web config to delete
      * @return HTML response redirecting to the list page after deletion
      */
     @Execute
     @Secured({ ROLE })
     public HtmlResponse delete(final EditForm form) {
         verifyCrudMode(form.crudMode, CrudMode.DETAILS, this::asListHtml);
         validate(form, messages -> {}, this::asDetailsHtml);
         verifyToken(this::asDetailsHtml);
         final String id = form.id;
         webConfigService.getWebConfig(id).ifPresent(entity -> {
             try {
                 webConfigService.delete(entity);
                 saveInfo(messages -> messages.addSuccessCrudDeleteCrudTable(GLOBAL));
                 logger.info("Deleted web config: {}", entity.getName());
             } catch (final Exception e) {
                 logger.warn("Failed to delete web config: {}", form.name, e);
                 throwValidationError(messages -> messages.addErrorsCrudFailedToDeleteCrudTable(GLOBAL, buildThrowableMessage(e)),
                         this::asEditHtml);
             }
         }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asDetailsHtml);
         });
         return redirect(getClass());
     }
 
     // ===================================================================================
     //                                                                        Assist Logic
     //                                                                        ============
     /**
      * Retrieves or creates a WebConfig entity based on the form's CRUD mode.
      *
      * @param form the form containing the web config data
      * @param username the username of the current user
      * @param currentTime the current timestamp
      * @return an optional WebConfig entity
      */
     public static OptionalEntity<WebConfig> getEntity(final CreateForm form, final String username, final long currentTime) {
         switch (form.crudMode) {
         case CrudMode.CREATE:
             return OptionalEntity.of(new WebConfig()).map(entity -> {
                 entity.setCreatedBy(username);
                 entity.setCreatedTime(currentTime);
                 return entity;
             });
         case CrudMode.EDIT:
             if (form instanceof EditForm) {
                 return ComponentUtil.getComponent(WebConfigService.class).getWebConfig(((EditForm) form).id);
             }
             break;
         default:
             break;
         }
         return OptionalEntity.empty();
     }
 
     /**
      * Converts a form to a WebConfig entity with proper user and timestamp information.
      * Also processes permissions and virtual hosts from form fields.
      *
      * @param form the form containing the web config data
      * @return an optional WebConfig entity with updated metadata
      */
     public static OptionalEntity<WebConfig> getWebConfig(final CreateForm form) {
         final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
         final String username = systemHelper.getUsername();
         final long currentTime = systemHelper.getCurrentTimeAsLong();
         return getEntity(form, username, currentTime).map(entity -> {
             entity.setUpdatedBy(username);
             entity.setUpdatedTime(currentTime);
             copyBeanToBean(form, entity,
                     op -> op.exclude(Stream
                             .concat(Stream.of(Constants.COMMON_CONVERSION_RULE), Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS))
                             .toArray(n -> new String[n])));
             entity.setPermissions(encodePermissions(form.permissions));
             entity.setVirtualHosts(split(form.virtualHosts, "\n")
                     .get(stream -> stream.filter(StringUtil::isNotBlank).distinct().map(String::trim).toArray(n -> new String[n])));
             return entity;
         });
     }
 
     /**
      * Registers available roles and labels for use in web config forms.
      * Includes role types, label types, and label setting configuration.
      *
      * @param data the render data to register the roles and labels with
      */
     protected void registerRolesAndLabels(final RenderData data) {
         RenderDataUtil.register(data, "labelSettingEnabled", fessConfig.isFormAdminLabelInConfigEnabled());
         RenderDataUtil.register(data, "roleTypeItems", roleTypeService.getRoleTypeList());
         RenderDataUtil.register(data, "labelTypeItems", labelTypeService.getLabelTypeList());
     }
 
     // ===================================================================================
     //                                                                        Small Helper
     //                                                                        ============
     //                                                                              JSP
     //                                                                           =========
 
     private HtmlResponse asListHtml() {
         return asHtml(path_AdminWebconfig_AdminWebconfigJsp).renderWith(data -> {
             RenderDataUtil.register(data, "webConfigItems", webConfigService.getWebConfigList(webConfigPager)); // page navi
         }).useForm(SearchForm.class, setup -> {
             setup.setup(form -> {
                 copyBeanToBean(webConfigPager, form, op -> op.include("id", "name", "urls", "description"));
             });
         });
     }
 
     private HtmlResponse asEditHtml() {
         return asHtml(path_AdminWebconfig_AdminWebconfigEditJsp).renderWith(data -> {
             registerRolesAndLabels(data);
         });
     }
 
     private HtmlResponse asDetailsHtml() {
         return asHtml(path_AdminWebconfig_AdminWebconfigDetailsJsp).renderWith(data -> {
             registerRolesAndLabels(data);
         });
     }
 }