MessagesController.java

/**
 * TFG 75.678 - TFG Desarrollo web 2020 e-Learning for Schools
 * Copyright (C) 2020  Eduardo Rodriguez Carro
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.uoc.tfg.sel.web;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.core.Authentication;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.uoc.tfg.sel.repository.model.Message;
import org.uoc.tfg.sel.repository.model.MessageRecipient;
import org.uoc.tfg.sel.repository.model.User;
import org.uoc.tfg.sel.service.MessagingService;
import org.uoc.tfg.sel.service.UserService;

/**
 * The Class MessagesController.
 *
 * @author Eduardo Rodriguez Carro
 */
@RestController
@CrossOrigin
@RequestMapping("/messages")
public class MessagesController {

	/** The messaging service. */
	@Autowired
	private MessagingService messagingService;

	/** The user service. */
	@Autowired
	private UserService userService;
	
	/**
	 * Listado de usuarios por tipo.
	 *
	 * @param authentication the authentication
	 * @return the users all
	 * @throws Exception the exception
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/all", method = RequestMethod.GET)
	public ResponseEntity<List<Message>> getAllRootMessages(Authentication authentication) throws Exception {
		User user = ControllerUtils.getUser(authentication);
		List<Message> messages = messagingService.getAllRootMessages(user);
		if(messages == null || messages.isEmpty()) {
			return ResponseEntity.noContent().build();	
		}
		return ResponseEntity.ok(messages);
	}
		
	/**
	 * Listado de usuarios por tipo.
	 *
	 * @param id the id
	 * @param authentication the authentication
	 * @return the users all
	 * @throws Exception the exception
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/item/{id}/thread", method = RequestMethod.GET)
	public ResponseEntity<List<Message>> getAllChildMessages(@PathVariable("id") Integer id,Authentication authentication) throws Exception {
		User user = ControllerUtils.getUser(authentication);
		List<Message> messages = messagingService.getChildMessages(user, id);
		if(messages == null || messages.isEmpty()) {
			return ResponseEntity.noContent().build();
		}
		return ResponseEntity.ok(messages);
	}	
	
	
	/**
	 * Gets the users available to send.
	 *
	 * @param authentication the authentication
	 * @return the users available to send
	 * @throws Exception the exception
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/recipients", method = RequestMethod.GET)
	public ResponseEntity<List<User>> getUsersAvailableToSend(Authentication authentication) throws Exception {
		User user = ControllerUtils.getUser(authentication);
		List<User> users = userService.getRecipients(user);
		return ResponseEntity.ok(users);
	}
	

	/**
	 * Checks if is user in message to.
	 *
	 * @param message the message
	 * @param id the id
	 * @return true, if is user in message to
	 */
	private boolean isUserInMessageTo(Message message,Integer id) {
		for (MessageRecipient recipient : message.getTo()) {
			if (recipient.getId().getUser().getId() == id) {
				return true;
			}
		}
		return false;
	} 

	/**
	 * Gets the message.
	 *
	 * @param id the id
	 * @param authentication the authentication
	 * @return the message
	 * @throws Exception the exception
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/item/{id}", method = RequestMethod.GET)
	public ResponseEntity<Message> getMessage(@PathVariable("id") Integer id,Authentication authentication) throws Exception {
		User user = ControllerUtils.getUser(authentication);
		Message message = messagingService.getMessage(user, id);
		if (message != null && (message.getFrom().getId() == user.getId() || isUserInMessageTo(message,user.getId()))) {
			return ResponseEntity.ok(message);
		}
		return ResponseEntity.notFound().build();
	}
	
	
	/**
	 * Save message.
	 *
	 * @param message        the message
	 * @param authentication the authentication
	 * @return the response entity
	 * @throws Exception the exception
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/send", method = RequestMethod.POST)
	public ResponseEntity<Message> saveMessage(@RequestBody Message message,Authentication authentication) throws Exception {
		//TODO limitar a quien puede enviar mensajes segun los accesos por clases y alumnos
		User user = ControllerUtils.getUser(authentication);
		messagingService.save(user, message);
		return ResponseEntity.accepted().build();
	}
	
	/**
	 * Sets the readed.
	 *
	 * @param id             the id
	 * @param authentication the authentication
	 * @return the response entity
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/readed/{id}", method = RequestMethod.POST)
	public ResponseEntity<Boolean> setReaded(@PathVariable("id") Integer id, Authentication authentication) {
		//TODO limitar a quien puede enviar mensajes segun los accesos por clases y alumnos
		User user = ControllerUtils.getUser(authentication);
		messagingService.setReaded(id, user);
		return ResponseEntity.ok(true);
	}
	
	
	/**
	 * Sets the readed.
	 *
	 * @param id             the id
	 * @param authentication the authentication
	 * @return the response entity
	 */
	@PreAuthorize("hasRole('ROLE_API_MESSAGES')")
	@RequestMapping(value = "/pending", method = RequestMethod.GET)
	public ResponseEntity<Integer> getPendingMessages(Authentication authentication) {
		User user = ControllerUtils.getUser(authentication);
		Integer messages = messagingService.getPendingMessages(user);
		return ResponseEntity.ok(messages);
	}
}