package chat.medeasy;

import java.io.Closeable;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

public class HttpClientUtil {

	public static String execHttpClient(String jsonStr, String serverURL, Map<String, String> heads) {
		boolean result = false;
		CloseableHttpResponse response = null;
		CloseableHttpClient httpClient = null;
		HttpPost httpPost = null;
		String responseContent = "";
		
		try {
			 httpClient = HttpClientBuilder.create().build();
			 httpPost = new HttpPost(serverURL);
			 if (heads != null) {
				 for (String head : heads.keySet()) {
					  httpPost.addHeader(head, heads.get(head));
				 }
			 }
			 httpPost.setEntity(new StringEntity(jsonStr, "UTF-8"));
			 response = httpClient.execute(httpPost);
			 HttpEntity entity = response.getEntity();
			 responseContent = EntityUtils.toString(entity);
			 response.close();
			 httpClient.close();
		} catch(Exception e) {
			 e.printStackTrace();
		} finally {
			close(response, httpClient);
		}
		
		return responseContent;
	}
	
	private static void close(Closeable... closeables) {
		if (closeables != null && closeables.length > 0) {
			try {
				for (Closeable closeable : closeables) {
					if (closeable != null) {
						closeable.close();
					}
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}		
	}
}