Controller.java

package hu.pazmany.controller;

import com.fasterxml.jackson.databind.ObjectMapper;
import hu.pazmany.dto.DetailedDogDTO;
import hu.pazmany.dto.DogDTO;
import hu.pazmany.dto.UserDTO;
import hu.pazmany.security.JwtTokenProvider;
import hu.pazmany.service.DogService;
import hu.pazmany.service.UserService;
import jakarta.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.List;
import java.util.Optional;
import java.util.regex.Pattern;

@RestController
@RequestMapping("/api")
public class Controller {
	private final DogService dogService;
	private final UserService userService;
	private static final JwtTokenProvider jwtTokenProvider = JwtTokenProvider.getInstance();

	@Autowired
	public Controller(DogService dogService, UserService userService) {
		this.dogService = dogService;
		this.userService = userService;
	}


	@GetMapping("/dogs")
	public List<DogDTO> getAllDogs(){
		return dogService.getAllDogs();
	}

	@GetMapping("/dogs/{id}")
	public ResponseEntity<?> getDogById(@PathVariable Integer id) {
		return dogService.get(id)
				.map(dogEntity -> ResponseEntity.ok(new DetailedDogDTO(
						dogEntity.getId(),
						dogEntity.getName(),
						dogEntity.getPicture(),
						dogEntity.getAge(),
						dogEntity.getBreed())))
				.orElse(ResponseEntity.notFound().build());
	}

	@PostMapping("/newdog")
	public ResponseEntity<?> addNewDog(@RequestBody DetailedDogDTO dto, @RequestHeader("Authorization") String token) {
		System.out.println(token);
		if(!isValidToken(token)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();

		// Save the dog and picture
        try {
            dogService.addNewDog(dto);
        } catch (IOException e) {
            return ResponseEntity.status(HttpStatus.NO_CONTENT).body("Wrong picture format, vagy nem tudom én ide csak feljárok");
        }
        return ResponseEntity.status(HttpStatus.CREATED).body("Dog created successfully");
	}

	@PostMapping(value = "/dogs/{id}/edit",  consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
	public ResponseEntity<?> editDog(@PathVariable Integer id, @RequestHeader("Authorization") String token, @RequestParam("dog") String stringDogDTO, @RequestParam("picture") MultipartFile mpf) {
		if (!isValidToken(token)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();