import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import sun.misc.BASE64Encoder;

	public class PricingClient {

		static String EcoCostParamURL = null;
		static String EcoCostURL = null;
		static String TPRateURL = null;
		static String reqFileName;
		static String type;
		static String ServiceName;
		static HashMap<String, String> urlList = new HashMap<String, String>();

		public static String readFile(String fileName) throws IOException {

			System.out.println("Reading input params from file :" + fileName);
			BufferedReader rd = new BufferedReader(new FileReader(fileName));
			StringBuilder sb = new StringBuilder();
			String line = "";
			while ((line = rd.readLine()) != null) {
				// System.out.println(line);
				sb.append(line);
			}

			return sb.toString();

		}

		public static void main(String[] args) {
			// TODO Auto-generated method stub
			String TYPE = null;
			String userId = null;
			String password=null;
			System.out.println("Args length" + args.length);
			if (args.length == 4) {
				reqFileName = args[0];
				ServiceName = args[1];
				userId = args[2];
				password = args[3];
				
			} else {
				System.out.println("Invalid argument passed ...!");
				System.out.println("Usage: <RestClient> <Request file name>  <ServiceURL(getPricing/getPricingData) , userId, password >");
				System.exit(1);
			}
			System.out.println(" Request URL :" + ServiceName);
			System.out.println(" Request Json File :" + reqFileName);

			String URL = ServiceName;
			if (URL == null) {
				System.out.println("Unable to find URL from input");
				System.exit(4);
			}

			try {
				String request = readFile(reqFileName);
				System.out.println("\nRequest: " + request);
				callService(URL, request,userId,password);

			} catch (Exception e) {

				e.printStackTrace();

			}

		}

		public static void callService(String url1, String inputString, String userId, String pswd) {

			try {

				URL url = new URL(url1);
				HttpURLConnection conn = (HttpURLConnection) url.openConnection();
				 	String name = userId;
			        String password = pswd;
			        String authString = name + ":" + password;
			        @SuppressWarnings("restriction")
					String authStringEnc = new BASE64Encoder().encode(authString.getBytes());
			        System.out.println("Base64 encoded auth string: " + authStringEnc);
			        conn.setRequestProperty("Authorization", "Basic"+" "+ authStringEnc);
			        conn.setRequestProperty("UserID",name);
			        
				conn.setDoOutput(true);
				conn.setRequestMethod("POST");
				if(url1.indexOf(("getPricingData")) !=-1)
					conn.setRequestMethod("GET");
				conn.setRequestProperty("Content-Type", "application/json");

				String input = inputString;

				OutputStream os = conn.getOutputStream();
				os.write(input.getBytes());
				os.flush();
				InputStream _is;
				if (conn.getResponseCode() < HttpURLConnection.HTTP_BAD_REQUEST) {
					_is = conn.getInputStream();
					
				} else {
					/* error from server */
					_is = conn.getErrorStream();
				}
				if (conn.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
					System.out.println( "HTTP_UNAUTHORIZED");
					
				} 
				if(_is!= null){
					BufferedReader br = new BufferedReader(new InputStreamReader(_is));

					String output;
					System.out.println("Output from Server .... \n");
					while ((output = br.readLine()) != null) {
					System.out.println(output);
					}
				}
				

				conn.disconnect();

			} catch (MalformedURLException e) {

				e.printStackTrace();

			} catch (IOException e) {

				e.printStackTrace();

			}

		}

	}