videoshop.controller.CatalogController.java Source code

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Here is the source code for videoshop.controller.CatalogController.java

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/*
 * Copyright 2013-2015 the original author or authors.
 *
 * 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 videoshop.controller;

import videoshop.model.Comment;
import videoshop.model.Disc;
import videoshop.model.Disc.DiscType;
import videoshop.model.VideoCatalog;

import java.util.Optional;

import org.salespointframework.inventory.Inventory;
import org.salespointframework.inventory.InventoryItem;
import org.salespointframework.quantity.Quantity;
import org.salespointframework.time.BusinessTime;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.support.MessageSourceAccessor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
class CatalogController {

    private static final Quantity NONE = Quantity.of(0);

    private final VideoCatalog videoCatalog;
    private final Inventory<InventoryItem> inventory;
    private final BusinessTime businessTime;

    // ()
    // Da wir nur ein Catalog.html-Template nutzen, aber dennoch den richtigen Titel auf der Seite haben wollen,
    // nutzen wir den MessageSourceAccessor um an die messsages.properties Werte zu kommen
    private final MessageSourceAccessor messageSourceAccessor;

    @Autowired
    public CatalogController(VideoCatalog videoCatalog, Inventory<InventoryItem> inventory,
            BusinessTime businessTime, MessageSource messageSource) {

        this.videoCatalog = videoCatalog;
        this.inventory = inventory;
        this.businessTime = businessTime;
        this.messageSourceAccessor = new MessageSourceAccessor(messageSource);
    }

    @RequestMapping("/dvdCatalog")
    public String dvdCatalog(ModelMap modelMap) {

        modelMap.addAttribute("catalog", videoCatalog.findByType(DiscType.DVD));
        modelMap.addAttribute("title", messageSourceAccessor.getMessage("catalog.dvd.title"));

        return "discCatalog";
    }

    @RequestMapping("/blurayCatalog")
    public String blurayCatalog(Model model) {

        model.addAttribute("catalog", videoCatalog.findByType(DiscType.BLURAY));
        model.addAttribute("title", messageSourceAccessor.getMessage("catalog.bluray.title"));

        return "discCatalog";
    }

    // ()
    // Befindet sich die angesurfte Url in der Form /foo/5 statt /foo?bar=5 so muss man @PathVariable benutzen
    // Lektre: http://spring.io/blog/2009/03/08/rest-in-spring-3-mvc/
    @RequestMapping("/detail/{pid}")
    public String detail(@PathVariable("pid") Disc disc, Model model) {

        Optional<InventoryItem> item = inventory.findByProductIdentifier(disc.getIdentifier());
        Quantity quantity = item.map(InventoryItem::getQuantity).orElse(NONE);

        model.addAttribute("disc", disc);
        model.addAttribute("quantity", quantity);
        model.addAttribute("orderable", quantity.isGreaterThan(NONE));

        return "detail";
    }

    // ()
    // Der Katalog bzw die Datenbank "wei" nicht, dass die Disc mit einem Kommentar versehen wurde,
    // deswegen wird die update-Methode aufgerufen
    @RequestMapping(value = "/comment", method = RequestMethod.POST)
    public String comment(@RequestParam("pid") Disc disc, @RequestParam("comment") String comment,
            @RequestParam("rating") int rating, @RequestParam("user") String user) {

        disc.addComment(new Comment(comment, rating, businessTime.getTime(), user));
        videoCatalog.save(disc);

        return "redirect:detail/" + disc.getIdentifier();
    }
}