import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;

public class Client {
    public CompletableFuture<String> get(String urlStr) {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest req = HttpRequest.newBuilder()
        .uri(URI.create(urlStr))        
        .build();
        
        return client.sendAsync(req, BodyHandlers.ofString())
        .thenApply(HttpResponse::body);
    }
    public CompletableFuture<String> post(String url, String body, String... token) {
        
        HttpClient client = HttpClient.newHttpClient();

        HttpRequest req = HttpRequest.newBuilder()
        .uri(URI.create(url))
        .header("Content-Type", "application/json")
        .header("Authorization", "Bearer " + token[0])
        .POST(HttpRequest.BodyPublishers.ofString(body))
        .build();
        
        return client.sendAsync(req, BodyHandlers.ofString())
        .thenApply(HttpResponse::body);        
    }
    public CompletableFuture<String> put(String url, String body) {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest req = HttpRequest.newBuilder()
        .uri(URI.create(url))
        .header("Content-Type", "application/json")
        .PUT(HttpRequest.BodyPublishers.ofString(body))
        .build();

        return client.sendAsync(req, BodyHandlers.ofString())
        .thenApply(HttpResponse::body);        
    }
    public CompletableFuture<String> delete(String url) {
        HttpClient client = HttpClient.newHttpClient();
        HttpRequest req = HttpRequest.newBuilder()
        .uri(URI.create(url))
        .header("Content-Type", "application/json")
        .DELETE()
        .build();

        return client.sendAsync(req, BodyHandlers.ofString())
        .thenApply(HttpResponse::body);        
    }

}