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package br.com.codecode.dryutil.factory;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public final class HTTP {

    private static final String ACCEPT_LANGUAGE = "UTF-8";

    private static final String USER_AGENT = "Mozilla/5.0";

    private HTTP() {}

    public static String doSend(URL url, String method, int timeout) throws RuntimeException {

	if (url == null || method.equals("") || (timeout < 0)) {
	    throw new IllegalArgumentException("Missing or Incorrect Parameters !!!");
	}

	HttpURLConnection con;

	StringBuffer response;

	try {

	    con = (HttpURLConnection) url.openConnection();

	    con.setRequestMethod(method);

	    con.setRequestProperty("User-Agent", USER_AGENT);

	    con.setRequestProperty("Accept-Language", ACCEPT_LANGUAGE);

	    con.setConnectTimeout(timeout);

	    int responseCode = con.getResponseCode();

	    System.out.println(
		    "\nSending " + method + " request to URL : " + url + "Timeout is set up to " + timeout + " mili/s");

	    System.out.println("Response Code : " + responseCode);

	    try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {

		String inputLine;

		response = new StringBuffer();

		while ((inputLine = in.readLine()) != null) {

		    response.append(inputLine);
		}
	    }

	} catch (IOException e) {

	    throw new RuntimeException("Could not create a connection ", e);
	}

	return response.toString();
    }

    public static String doSend(URL url, String parameter, String method, int timeout) throws RuntimeException {

	if (url == null || parameter.equals("") || method.equals("") || (timeout < 0)) {
	    throw new IllegalArgumentException("Missing or Incorrect Parameters !!!");
	}

	HttpURLConnection con;

	StringBuffer response = null;

	try {

	    con = (HttpURLConnection) url.openConnection();

	    con.setRequestMethod(method);

	    con.setRequestProperty("User-Agent", USER_AGENT);

	    con.setRequestProperty("Accept-Language", ACCEPT_LANGUAGE);

	    con.setRequestProperty("Content-Type", "application/json");

	    con.setDoOutput(true);

	    try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {

		wr.writeBytes(parameter);

		wr.flush();
	    }

	    int responseCode = con.getResponseCode();

	    System.out.println(
		    "\nSending " + method + " request to URL : " + url + "Timeout is set up to " + timeout + " mili/s");

	    System.out.println("With parameter : " + parameter);

	    System.out.println("Response Code : " + responseCode);

	    try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {

		String inputLine;

		response = new StringBuffer();

		while ((inputLine = in.readLine()) != null) {

		    response.append(inputLine);
		}
	    }
	} catch (IOException e) {

	    throw new RuntimeException("Could not create a connection ", e);
	}

	return response.toString();

    }

    @Deprecated
    public static String sendGet(URL url) throws IOException {

	HttpURLConnection con = (HttpURLConnection) url.openConnection();

	// optional default is GET
	con.setRequestMethod("GET");
	// add request header
	con.setRequestProperty("User-Agent", USER_AGENT);

	con.setRequestProperty("Accept-Language", "UTF-8");

	int responseCode = con.getResponseCode();

	System.out.println("\nSending 'GET' request to URL : " + url);

	System.out.println("Response Code : " + responseCode);

	StringBuffer response;

	try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {
	    String inputLine;
	    response = new StringBuffer();
	    while ((inputLine = in.readLine()) != null) {
		response.append(inputLine);
	    }
	}

	return response.toString();

    }

    @Deprecated
    public static String sendPost(URL url, String urlParameters) throws IOException {

	HttpURLConnection con = (HttpURLConnection) url.openConnection();

	// add request header
	con.setRequestMethod("POST");
	con.setRequestProperty("User-Agent", USER_AGENT);
	con.setRequestProperty("Accept-Language", "UTF-8");
	con.setRequestProperty("Content-Type", "application/json");

	// Send post request
	con.setDoOutput(true);

	try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {
	    wr.writeBytes(urlParameters);
	    wr.flush();
	}

	int responseCode = con.getResponseCode();
	System.out.println("\nSending 'POST' request to URL : " + url);
	System.out.println("Post parameters : " + urlParameters);
	System.out.println("Response Code : " + responseCode);

	StringBuffer response;
	try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {
	    String inputLine;
	    response = new StringBuffer();
	    while ((inputLine = in.readLine()) != null) {
		response.append(inputLine);
	    }
	}

	return response.toString();

    }

}