org.hobsoft.contacts.server.controller.ContactsController.java Source code

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Here is the source code for org.hobsoft.contacts.server.controller.ContactsController.java

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/*
 * 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.hobsoft.contacts.server.controller;

import java.net.URI;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.hobsoft.contacts.server.model.Contact;
import org.hobsoft.contacts.server.repository.ContactRepository;
import org.hobsoft.contacts.server.support.spring.hateoas.Relation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.hateoas.Link;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
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.servlet.ModelAndView;
import org.springframework.web.util.UriComponentsBuilder;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Spring MVC controller for contacts.
 */
@Controller
public class ContactsController {
    // ----------------------------------------------------------------------------------------------------------------
    // fields
    // ----------------------------------------------------------------------------------------------------------------

    private final ContactRepository contactRepository;

    private final ContactResourceAssembler contactResourceAssembler;

    // ----------------------------------------------------------------------------------------------------------------
    // constructors
    // ----------------------------------------------------------------------------------------------------------------

    @Autowired
    public ContactsController(ContactRepository contactRepository,
            ContactResourceAssembler contactResourceAssembler) {
        this.contactRepository = checkNotNull(contactRepository, "contactRepository");
        this.contactResourceAssembler = checkNotNull(contactResourceAssembler, "contactResourceAssembler");
    }

    // ----------------------------------------------------------------------------------------------------------------
    // public methods
    // ----------------------------------------------------------------------------------------------------------------

    @RequestMapping(value = "/contacts/create", method = RequestMethod.GET, produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView createForm() {
        return new ModelAndView("contact/contactCreate");
    }

    @RequestMapping(value = "/contacts", method = RequestMethod.POST, consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
    public ResponseEntity<Object> create(Contact contact) {
        contactRepository.create(contact);

        Link link = contactResourceAssembler.toResource(contact).getId();
        URI location = UriComponentsBuilder.fromUriString(link.getHref()).build().toUri();

        HttpHeaders headers = new HttpHeaders();
        headers.setLocation(location);
        return new ResponseEntity<>(headers, HttpStatus.SEE_OTHER);
    }

    @RequestMapping(value = "/contacts", method = RequestMethod.GET, produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView getAll() {
        List<Contact> contacts = contactRepository.getAll();

        Map<String, Object> model = new HashMap<>();
        model.put("contacts", contactResourceAssembler.toResources(contacts));

        return new ModelAndView("contact/contactsView", model);
    }

    @RequestMapping(value = "/contact/{id}", method = RequestMethod.GET, produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView get(@PathVariable long id) {
        Contact contact = contactRepository.get(id);

        Map<String, Object> model = new HashMap<>();
        model.put("contact", contactResourceAssembler.toResource(contact));

        return new ModelAndView("contact/contactView", model);
    }

    @RequestMapping(value = "/contact/{id}/delete", method = RequestMethod.GET, produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView deleteForm(@PathVariable long id) {
        Contact contact = contactRepository.get(id);

        Map<String, Object> model = new HashMap<>();
        model.put("contact", contactResourceAssembler.toResource(contact));

        return new ModelAndView("contact/contactDelete", model);
    }

    @RequestMapping(value = "/contact/{id}", method = RequestMethod.DELETE)
    public ResponseEntity<Object> delete(@PathVariable long id) {
        Contact contact = contactRepository.get(id);

        contactRepository.delete(contact);

        Link link = contactResourceAssembler.toResource(contact).getLink(Relation.COLLECTION.rel());
        URI location = UriComponentsBuilder.fromUriString(link.getHref()).build().toUri();

        HttpHeaders headers = new HttpHeaders();
        headers.setLocation(location);
        return new ResponseEntity<>(headers, HttpStatus.SEE_OTHER);
    }
}