package apitesting;

import org.glassfish.jersey.internal.util.Base64;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;

/**
 * @author Charlotte
 */
public class ApiTesting {

    static String basic;
    static String clientId = "34f3aa8cf2274f8195d89e679b953bd1";
    static String clientSecret = "9B4fxyYIXm9vkOSgeNnMXbNlsC4tL3xP7XB69pRG";
    static private String refreshToken = "XOFpePh5YVqjszuFs8hla-UjfM1QEc9xVHSsOhpXkXCvcKxdRwArKd8maDlCEpLzQ2llaP6i5U9VD6r90uWtM8a2kGKs2J_4OII_6GzxFHvaW7Mf88b9S5DPHvtml00NWNaCz5sWmOQEsvYj3kL8C0uQY-bKn7twHNazWpFh93iuafkzKJ6D-gTecjKHyD4f2MtZmU61yTu2pkRV1NShRw_jXMyp5wTIvTEp2rxCzO41";
    static private String accessToken = "";

    public static void main(String[] args) throws Exception {
        basic = Base64.encodeAsString(clientId + ":" + clientSecret);
        sendPost();
        String newAccessToken = newAccessToken();
    }

    public static String newAccessToken() {
        try {
            String url = "https://login.eveonline.com/oauth/token";
            URL obj = new URL(url);

            HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

            //set Request Headers
            //System.out.println(basic);
            con.setRequestMethod("POST");
            con.setRequestProperty("Authorization", "Basic " + basic);
            con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            con.setRequestProperty("Host", "login.eveonline.com");

            String urlParameters = "grant_type=refresh_token&refresh_token=" + refreshToken;

            // Send post request
            con.setDoOutput(true);
            DataOutputStream wr = new DataOutputStream(con.getOutputStream());
            wr.writeBytes(urlParameters);
            wr.flush();
            wr.close();

            //getResponseInformation
            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);
            System.out.println(con.getResponseMessage());

            //get input
            BufferedReader in = new BufferedReader(
                    new InputStreamReader(con.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();
            //System.out.println(in.readLine());
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            //print result
            String resp = (response.toString());

            //get substring for accessToken
            String returnString = "";
            getAccessLoop:
            for (int i = 0; i < resp.length(); i++) {
                if (resp.charAt(i) == ':' && resp.charAt(i + 1) == '"') {
                    for (int j = i + 2; j < resp.length(); j++) {
                        if (resp.charAt(j) != '"') {
                            returnString += resp.charAt(j);
                        } else {
                            break getAccessLoop;
                        }
                    }
                }
            }

            System.out.println(returnString);
            accessToken = returnString;
            return returnString;
        } catch (Exception e) {
            //e.printStackTrace();
            return accessToken;
        }

    }

    private static void sendPost() throws Exception {
        String url = "https://login.eveonline.com/oauth/token";
        URL obj = new URL(url);
        //System.out.println(((HttpsURLConnection) obj.openConnection()).getRequestMethod());
        HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
        //add reuqest header

        System.out.println(basic);
        con.setRequestMethod("POST");
        con.setRequestProperty("Authorization", "Basic " + basic);
        con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        con.setRequestProperty("Host", "login.eveonline.com");

        String urlParameters = "grant_type=refresh_token&refresh_token=" + refreshToken;

        // Send post request
        con.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(con.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();

        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);
        System.out.println(con.getResponseMessage());

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

        //print result
        System.out.println(response.toString());
    }
}