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package de.romjaki.dsbclient;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.message.BasicNameValuePair;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;
import static java.util.Calendar.*;
public class UnUtil {
private UnUtil() {
UnUtil.singleton(UnUtil.class);
}
public static Calendar calendarByDate(Date date, Locale germany) {
Calendar calendar = Calendar.getInstance(Locale.GERMANY);
calendar.setTime(date);
return calendar;
}
public static Calendar sanitizeDate(Calendar temp) {
Calendar calendar = Calendar.getInstance(temp.getTimeZone());
calendar.set(
temp.get(YEAR),
temp.get(MONTH),
temp.get(DAY_OF_MONTH),
0, 0, 0);
return calendar;
}
public static void singleton(Class<UnUtil> utilClass) throws IllegalStateException {
throw new IllegalStateException("No " + utilClass.getCanonicalName() + " class instances for you :P");
}
public static String httpGet(String urlString, Map<String, List<String>> headers) throws IOException {
return performGeneralHttpRequest("GET", urlString, headers);
}
public static String performGeneralHttpRequest(String method, String urlString, Map<String, List<String>> headers) throws IOException {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(method);
conn.getRequestProperties().putAll(headers);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
InputStream stream = conn.getInputStream();
return readFully(stream);
}
public static UrlEncodedFormEntity createFormEntity(Map<String, String> params) {
List<NameValuePair> nameValuePairs = new ArrayList<>();
params.forEach((name, val) -> nameValuePairs.add(new BasicNameValuePair(name, val)));
try {
return new UrlEncodedFormEntity(nameValuePairs, "UTF-8");
} catch (UnsupportedEncodingException e) {
return null;
}
}
public static String readFully(InputStream stream) {
return new Scanner(stream).useDelimiter("\\A").next();
}
}
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