Add edition of user name or user email

src/main/java/org/codiki/account/AccountService.java

@@ -140,4 +140,32 @@ public class AccountService {
 		
 		return new UserDTO(user);
 	}
+	
+	public void updateUser(final UserDTO pUser, final HttpServletRequest pRequest,
+			final HttpServletResponse pResponse) throws IOException {
+		final Optional<User> connectedUserOpt = tokenService.getAuthenticatedUserByToken(pRequest);
+		if(connectedUserOpt.isPresent()) {
+			final User connectedUser = connectedUserOpt.get();
+			
+			final Optional<User> userFromDb = userRepository.findByEmail(pUser.getEmail());
+			
+			/*
+			 * If a user is returned by the repository, that's the email adress is used, but
+			 * if it is not the same as the connected user, that's the email adress
+			 * corresponds to another user. So a 409 error is sent. Otherwise, if no user is
+			 * returned by the repository, that's the email adress is free to be used. So,
+			 * user can change him email adress.
+			 */
+			if(userFromDb.isPresent() && !connectedUser.getEmail().equals(userFromDb.get().getEmail())) {
+				pResponse.sendError(HttpServletResponse.SC_CONFLICT);
+			} else {
+				connectedUser.setName(pUser.getName());
+				connectedUser.setEmail(pUser.getEmail());
+				
+				userRepository.save(connectedUser);
+			}
+		} else {
+			pResponse.sendError(HttpServletResponse.SC_UNAUTHORIZED);
+		}
+	}
 }