package eu.univento.core.api.utils;

import com.google.common.collect.ImmutableList;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;

import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.Callable;

public class NameFetcher implements Callable<Map<UUID, String>>{
  private static final String PROFILE_URL = "https://sessionserver.mojang.com/session/minecraft/profile/";
  private final JSONParser jsonParser = new JSONParser();
  private final List<UUID> uuids;

  public NameFetcher(List<UUID> uuids)
  {
    this.uuids = ImmutableList.copyOf(uuids);
  }

  public Map<UUID, String> call() throws Exception
  {
    Map<UUID, String> uuidStringMap = new HashMap<UUID, String>();
    for (UUID uuid : this.uuids) {
      HttpURLConnection connection = (HttpURLConnection)new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + uuid.toString().replace("-", "")).openConnection();
      JSONObject response = (JSONObject)this.jsonParser.parse(new InputStreamReader(connection.getInputStream()));
      String name = (String)response.get("name");
      if (name == null) {
        continue;
      }
      String cause = (String)response.get("cause");
      String errorMessage = (String)response.get("errorMessage");
      if ((cause != null) && (cause.length() > 0)) {
        throw new IllegalStateException(errorMessage);
      }
      uuidStringMap.put(uuid, name);
    }
    return uuidStringMap;
  }

public static String getProfileUrl() {
	return PROFILE_URL;
}
}