Chatto/chatto/src/main/java/org/ros/chatto/controller/ChatMessageController.java

package org.ros.chatto.controller;

import java.security.Principal;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.util.Date;
import java.util.List;

import org.ros.chatto.dto.ChatMessageDTO;
import org.ros.chatto.model.MessageCipher;
import org.ros.chatto.service.ChatService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/chat")
public class ChatMessageController {
	@Autowired
	private ChatService chatService;

	@PostMapping(value = "/post/message", consumes = { "application/json" })
	@ResponseBody
	public ResponseEntity<ChatMessageDTO> newMessage(@RequestBody ChatMessageDTO chatMessageDTO, Principal principal) {
		MessageCipher messageCipher = chatMessageDTO.getMessageCipher();
		String fromUser = principal.getName();
		String toUser = chatMessageDTO.getToUser();
		System.out.println("Message cipher = " + messageCipher);
		chatService.saveNewMessage(fromUser, toUser, messageCipher);
		return new ResponseEntity<ChatMessageDTO>(HttpStatus.OK);
	}

	@GetMapping(value = "/get/messages/{userName}")
	@ResponseBody
	public List<ChatMessageDTO> sendAllMessages(@PathVariable String userName, Principal principal) {
		List<ChatMessageDTO> chatMessageDTOs = chatService.getAllMessages(principal.getName(), userName);
 		return chatMessageDTOs;
	}
	@GetMapping(value = "/get/messages/{userName}/{lastMessageTime}")
	@ResponseBody
	public List<ChatMessageDTO> sendNewMessages(@PathVariable String userName, @PathVariable String lastMessageTime, Principal principal) {
		System.out.println("Last message time = " + lastMessageTime );
		DateTimeFormatter formatter = new DateTimeFormatterBuilder()
			    // date/time
			    .append(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
			    // offset (hh:mm - "+00:00" when it's zero)
			    .optionalStart().appendOffset("+HH:MM", "+00:00").optionalEnd()
			    // offset (hhmm - "+0000" when it's zero)
			    .optionalStart().appendOffset("+HHMM", "+0000").optionalEnd()
			    // offset (hh - "Z" when it's zero)
			    .optionalStart().appendOffset("+HH", "Z").optionalEnd()
			    // create formatter
			    .toFormatter();
		Date date = Date.from(OffsetDateTime.parse(lastMessageTime, formatter).toInstant());

		List<ChatMessageDTO> chatMessageDTOs = chatService.getNewMessages(principal.getName(), userName, date);
 		return chatMessageDTOs;
	}
}

//public ResponseEntity<List<ChatMessage>> getMessages(@PathVariable String userName, Principal principal) {
////List<ChatMessage> chatMessages = chatMessageRepository.getAllMessages(principal.getName(), userName);
//
////	return posts.stream()
////	          .map(post -> convertToDto(post))
////	          .collect(Collectors.toList());
//return new ResponseEntity<List<ChatMessage>>(chatMessages, HttpStatus.OK);
//}