/*
    * Copyright 2012-2017 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.role;
  
  import java.util.Base64;
  
  import javax.annotation.Resource;
  
  import org.codelibs.fess.Constants;
  import org.codelibs.fess.app.pager.RolePager;
  import org.codelibs.fess.app.service.RoleService;
  import org.codelibs.fess.app.web.CrudMode;
  import org.codelibs.fess.app.web.base.FessAdminAction;
  import org.codelibs.fess.es.user.exentity.Role;
  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 org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * @author shinsuke
   * @author Keiichi Watanabe
   */
  public class AdminRoleAction extends FessAdminAction {
  
      private static final Logger logger = LoggerFactory.getLogger(AdminRoleAction.class);
  
      // ===================================================================================
      //                                                                           Attribute
      //                                                                           =========
      @Resource
      private RoleService roleService;
      @Resource
      private RolePager rolePager;
  
      // ===================================================================================
      //                                                                               Hook
      //                                                                              ======
      @Override
      protected void setupHtmlData(final ActionRuntime runtime) {
          super.setupHtmlData(runtime);
          runtime.registerData("helpLink", systemHelper.getHelpLink(fessConfig.getOnlineHelpNameRole()));
      }
  
      // ===================================================================================
      //                                                                      Search Execute
      //                                                                      ==============
      @Execute
      public HtmlResponse index(final SearchForm form) {
          return asListHtml();
      }
  
      @Execute
      public HtmlResponse list(final OptionalThing<Integer> pageNumber, final SearchForm form) {
          pageNumber.ifPresent(num -> {
              rolePager.setCurrentPageNumber(pageNumber.get());
          }).orElse(() -> {
              rolePager.setCurrentPageNumber(0);
          });
          return asHtml(path_AdminRole_AdminRoleJsp).renderWith(data -> {
              searchPaging(data, form);
          });
      }
  
      @Execute
      public HtmlResponse search(final SearchForm form) {
          copyBeanToBean(form, rolePager, op -> op.exclude(Constants.PAGER_CONVERSION_RULE));
          return asHtml(path_AdminRole_AdminRoleJsp).renderWith(data -> {
              searchPaging(data, form);
          });
      }
  
      @Execute
      public HtmlResponse reset(final SearchForm form) {
          rolePager.clear();
          return asHtml(path_AdminRole_AdminRoleJsp).renderWith(data -> {
              searchPaging(data, form);
          });
      }
  
     protected void searchPaging(final RenderData data, final SearchForm form) {
         RenderDataUtil.register(data, "roleItems", roleService.getRoleList(rolePager)); // page navi
 
         // restore from pager
         copyBeanToBean(rolePager, form, op -> op.include("id"));
     }
 
     // ===================================================================================
     //                                                                        Edit Execute
     //                                                                        ============
     // -----------------------------------------------------
     //                                            Entry Page
     //                                            ----------
     @Execute
     public HtmlResponse createnew() {
         saveToken();
         return asHtml(path_AdminRole_AdminRoleEditJsp).useForm(CreateForm.class, op -> {
             op.setup(form -> {
                 form.initialize();
                 form.crudMode = CrudMode.CREATE;
             });
         });
     }
 
     // -----------------------------------------------------
     //                                               Details
     //                                               -------
     @Execute
     public HtmlResponse details(final int crudMode, final String id) {
         verifyCrudMode(crudMode, CrudMode.DETAILS);
         saveToken();
         return asHtml(path_AdminRole_AdminRoleDetailsJsp).useForm(EditForm.class, op -> {
             op.setup(form -> {
                 roleService.getRole(id).ifPresent(entity -> {
                     copyBeanToBean(entity, form, copyOp -> {
                         copyOp.excludeNull();
                     });
                     form.crudMode = crudMode;
                 }).orElse(() -> {
                     throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), () -> asListHtml());
                 });
             });
         });
     }
 
     // -----------------------------------------------------
     //                                         Actually Crud
     //                                         -------------
     @Execute
     public HtmlResponse create(final CreateForm form) {
         verifyCrudMode(form.crudMode, CrudMode.CREATE);
         validate(form, messages -> {}, () -> asEditHtml());
         verifyToken(() -> asEditHtml());
         getRole(form).ifPresent(
                 entity -> {
                     try {
                         roleService.store(entity);
                         saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
                     } catch (final Exception e) {
                         logger.error("Failed to add " + entity, e);
                         throwValidationError(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)),
                                 () -> asEditHtml());
                     }
                 }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudFailedToCreateInstance(GLOBAL), () -> asEditHtml());
         });
         return redirect(getClass());
     }
 
     @Execute
     public HtmlResponse delete(final EditForm form) {
         verifyCrudMode(form.crudMode, CrudMode.DETAILS);
         validate(form, messages -> {}, () -> asDetailsHtml());
         verifyToken(() -> asDetailsHtml());
         final String id = form.id;
         roleService.getRole(id).ifPresent(entity -> {
             try {
                 roleService.delete(entity);
                 saveInfo(messages -> messages.addSuccessCrudDeleteCrudTable(GLOBAL));
             } catch (final Exception e) {
                 logger.error("Failed to delete " + entity, e);
                 throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), () -> asDetailsHtml());
             }
         }).orElse(() -> {
             throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), () -> asDetailsHtml());
         });
         return redirect(getClass());
     }
 
     // ===================================================================================
     //                                                                        Assist Logic
     //                                                                        ============
     private static OptionalEntity<Role> getEntity(final CreateForm form) {
         switch (form.crudMode) {
         case CrudMode.CREATE:
             return OptionalEntity.of(new Role()).map(entity -> {
                 entity.setId(Base64.getUrlEncoder().encodeToString(form.name.getBytes(Constants.CHARSET_UTF_8)));
                 return entity;
             });
         case CrudMode.EDIT:
             if (form instanceof EditForm) {
                 return ComponentUtil.getComponent(RoleService.class).getRole(((EditForm) form).id);
             }
             break;
         default:
             break;
         }
         return OptionalEntity.empty();
     }
 
     public static OptionalEntity<Role> getRole(final CreateForm form) {
         return getEntity(form).map(entity -> {
             copyBeanToBean(form, entity, op -> op.exclude(Constants.COMMON_CONVERSION_RULE));
             return entity;
         });
     }
 
     // ===================================================================================
     //                                                                        Small Helper
     //                                                                        ============
     protected void verifyCrudMode(final int crudMode, final int expectedMode) {
         if (crudMode != expectedMode) {
             throwValidationError(messages -> {
                 messages.addErrorsCrudInvalidMode(GLOBAL, String.valueOf(expectedMode), String.valueOf(crudMode));
             }, () -> asListHtml());
         }
     }
 
     // ===================================================================================
     //                                                                              JSP
     //                                                                           =========
 
     private HtmlResponse asListHtml() {
         return asHtml(path_AdminRole_AdminRoleJsp).renderWith(data -> {
             RenderDataUtil.register(data, "roleItems", roleService.getRoleList(rolePager)); // page navi
             }).useForm(SearchForm.class, setup -> {
             setup.setup(form -> {
                 copyBeanToBean(rolePager, form, op -> op.include("id"));
             });
         });
     }
 
     private HtmlResponse asEditHtml() {
         return asHtml(path_AdminRole_AdminRoleEditJsp);
     }
 
     private HtmlResponse asDetailsHtml() {
         return asHtml(path_AdminRole_AdminRoleDetailsJsp);
     }
 }