ru.mystamps.web.controller.CategoryController.java Source code

Introduction

Here is the source code for ru.mystamps.web.controller.CategoryController.java

Source

/*
 * Copyright (C) 2009-2017 Slava Semushin <slava.semushin@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package ru.mystamps.web.controller;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;

import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import org.springframework.web.servlet.view.RedirectView;

import lombok.RequiredArgsConstructor;

import ru.mystamps.web.Url;
import ru.mystamps.web.controller.converter.annotation.Category;
import ru.mystamps.web.controller.converter.annotation.CurrentUser;
import ru.mystamps.web.controller.editor.ReplaceRepeatingSpacesEditor;
import ru.mystamps.web.dao.dto.LinkEntityDto;
import ru.mystamps.web.dao.dto.SeriesInfoDto;
import ru.mystamps.web.model.AddCategoryForm;
import ru.mystamps.web.service.CategoryService;
import ru.mystamps.web.service.SeriesService;
import ru.mystamps.web.util.LocaleUtils;

import static ru.mystamps.web.controller.ControllerUtils.redirectTo;

@Controller
@RequiredArgsConstructor
public class CategoryController {

    private final CategoryService categoryService;
    private final SeriesService seriesService;

    @InitBinder("addCategoryForm")
    protected void initBinder(WebDataBinder binder) {
        // We can't use StringTrimmerEditor here because "only one single registered custom
        // editor per property path is supported".
        ReplaceRepeatingSpacesEditor editor = new ReplaceRepeatingSpacesEditor(true);
        binder.registerCustomEditor(String.class, "name", editor);
        binder.registerCustomEditor(String.class, "nameRu", editor);
    }

    @GetMapping(Url.ADD_CATEGORY_PAGE)
    public AddCategoryForm showForm() {
        return new AddCategoryForm();
    }

    @PostMapping(Url.ADD_CATEGORY_PAGE)
    public String processInput(@Valid AddCategoryForm form, BindingResult result,
            @CurrentUser Integer currentUserId, RedirectAttributes redirectAttributes) {

        if (result.hasErrors()) {
            return null;
        }

        String slug = categoryService.add(form, currentUserId);

        redirectAttributes.addFlashAttribute("justAddedCategory", true);

        return redirectTo(Url.INFO_CATEGORY_PAGE, slug);
    }

    @GetMapping(Url.INFO_CATEGORY_PAGE)
    public String showInfoBySlug(@Category @PathVariable("slug") LinkEntityDto category, Model model,
            Locale userLocale, HttpServletResponse response) throws IOException {

        if (category == null) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return null;
        }

        String slug = category.getSlug();
        String name = category.getName();

        String lang = LocaleUtils.getLanguageOrNull(userLocale);
        List<SeriesInfoDto> series = seriesService.findByCategorySlug(slug, lang);

        model.addAttribute("categorySlug", slug);
        model.addAttribute("categoryName", name);
        model.addAttribute("seriesOfCategory", series);

        return "category/info";
    }

    @GetMapping(Url.INFO_CATEGORY_BY_ID_PAGE)
    public View showInfoById(@Category @PathVariable("slug") LinkEntityDto country, HttpServletResponse response)
            throws IOException {

        if (country == null) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return null;
        }

        RedirectView view = new RedirectView();
        view.setStatusCode(HttpStatus.MOVED_PERMANENTLY);
        view.setUrl(Url.INFO_CATEGORY_PAGE);

        return view;
    }

    @GetMapping(Url.LIST_CATEGORIES_PAGE)
    public void list(Model model, Locale userLocale) {
        String lang = LocaleUtils.getLanguageOrNull(userLocale);
        List<LinkEntityDto> categories = categoryService.findAllAsLinkEntities(lang);

        model.addAttribute("categories", categories);
    }

}