RestTemplate

package com.dojo.springboot.rest.template.controllers;

import java.util.Arrays;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import com.dojo.springboot.rest.template.entity.Musica;
import com.dojo.springboot.rest.template.entity.Playlist;
import com.dojo.springboot.rest.template.entity.Usuario;

@RestController
@CrossOrigin
@RequestMapping("/api/playlists")
public class PlaylistController {

	@Value("${rest.musica.endpoint}")
	private String endpoint;

	@Autowired
	private RestTemplate restTemplate;

	@GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
	public ResponseEntity<Playlist> getByUser(@RequestParam("user") String user) {
		return ResponseEntity.ok(mockPlaylist(user));
	}

	private Playlist mockPlaylist(String user) {
		return Playlist.builder().id("1").musicas(fetchMusicas()).usuario(Usuario.builder().id("1").nome(user).build())
				.build();
	}

	private List<Musica> fetchMusicas() {
		Musica musica = restTemplate.getForObject(endpoint, Musica.class);
		return Arrays.asList(musica);
	}
}