app-mobile/app/src/main/java/monnethic/mobile/restApi/HttpCallHandler.java

package monnethic.mobile.restApi;

import org.json.JSONObject;

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

import monnethic.mobile.database.User;

public class HttpCallHandler {

    public String getHttp(URL url) throws Exception {
        InputStream inputStream;
        BufferedReader bufferedReader = null;
        HttpURLConnection urlConnection = null;

        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("GET");
        urlConnection.connect();

        int responseCode = urlConnection.getResponseCode();
        if(responseCode != 200){
            throw new Exception("ERROR != 200");
        }
        inputStream = urlConnection.getInputStream();
        if(inputStream == null){
            throw new Exception("ERROR inputStream");
        }

        bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
        StringBuilder stringBuilder = new StringBuilder();
        String line;

        while ((line = bufferedReader.readLine())!=null){
            stringBuilder.append(line);
        }

        return stringBuilder.toString();
    }


    public String postHttp(URL url, Map<String,String> params) throws Exception {
        String returnValue=null;
        HttpURLConnection urlConnection = null;
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod("POST");
        urlConnection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
        urlConnection.setRequestProperty("Accept","application/json");
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);

        JSONObject jsonParam = new JSONObject();
        for(Map.Entry<String,String> pair : params.entrySet()){
            jsonParam.put(pair.getKey(),pair.getValue());
        }

        DataOutputStream os = new DataOutputStream(urlConnection.getOutputStream());
        os.writeBytes(jsonParam.toString());

        int statusCode = urlConnection.getResponseCode();
        if(statusCode != 200){
            JSONObject jsonReturn = new JSONObject();
            if(statusCode == 404){
                jsonReturn.put("status",404);
                jsonReturn.put("response","Not Found");
                returnValue = jsonReturn.toString();
            }else if(statusCode == 403){
                jsonReturn.put("status",403);
                jsonReturn.put("response","Forbidden");
                returnValue = jsonReturn.toString();
            }
        } else {
            BufferedReader bufferedReader = null;
            bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            StringBuilder stringBuilder = new StringBuilder();

            String line;
            while ((line = bufferedReader.readLine())!=null){
                stringBuilder.append(line);
            }
            returnValue = stringBuilder.toString();
        }
        return returnValue;
    }


    public String executeLoginHttp(String urlParam, String[] params){
        BufferedReader bufferedReader = null;
        HttpURLConnection connection = null;
        String res = null;
        try{
            URL url = new URL(urlParam);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
            connection.setRequestProperty("Accept","application/json");
            connection.setDoOutput(true);
            connection.setDoInput(true);
            JSONObject jsonParam = new JSONObject();
            jsonParam.put("email",params[0]);
            jsonParam.put("password",params[1]);
            DataOutputStream os = new DataOutputStream(connection.getOutputStream());
            os.writeBytes(jsonParam.toString());

            int statusCode = connection.getResponseCode();
            if(statusCode != 200){
                JSONObject jsonReturn = new JSONObject();
                System.out.println("Response code is : "+statusCode);
                if(statusCode == 404){
                    jsonReturn.put("status",404);
                    jsonReturn.put("response","Not Found");
                    return jsonReturn.toString();
                }else if(statusCode == 403){
                    jsonReturn.put("status",403);
                    jsonReturn.put("response","Wrong Password");
                    return jsonReturn.toString();
                }
            }else{
                bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                StringBuilder stringBuilder = new StringBuilder();
                String line;
                while ((line = bufferedReader.readLine())!=null){
                    stringBuilder.append(line);
                }
                JSONObject jsonSuccess = new JSONObject(stringBuilder.toString());
                jsonSuccess.put("status",200);
                res = jsonSuccess.toString();
                os.flush();
                os.close();
            }
            return res;
        }catch (Exception e){
            e.printStackTrace();
            return null;
        } finally {
            if(connection != null){
                connection.disconnect();
            }
            if(bufferedReader != null){
                try {
                    bufferedReader.close();
                }catch (IOException e){
                    e.printStackTrace();
                }
            }
        }
    }

    public String executeRegisterHttp(String urlParam, User user){
        BufferedReader bufferedReader = null;
        HttpURLConnection connection = null;
        String res = null;
        try{
            URL url = new URL(urlParam);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
            connection.setRequestProperty("Accept","application/json");
            connection.setDoOutput(true);
            connection.setDoInput(true);
            JSONObject jsonParam = new JSONObject();
            jsonParam.put("name",user.getName());
            jsonParam.put("firstname",user.getFirstname());
            jsonParam.put("email",user.getEmail());
            jsonParam.put("password",user.getPassword());

            DataOutputStream os = new DataOutputStream(connection.getOutputStream());
            os.writeBytes(jsonParam.toString());

            int statusCode = connection.getResponseCode();
            if(statusCode!=200){
                JSONObject jsonReturn = new JSONObject();
                System.out.println("Response code is : "+statusCode);
                if(statusCode == 302){
                    jsonReturn.put("status",302);
                    jsonReturn.put("response","User Already Exist !");
                    return jsonReturn.toString();
                }else {
                    return null;
                }
            }else {
                bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                StringBuilder stringBuilder = new StringBuilder();
                String line;
                while ((line = bufferedReader.readLine())!=null){
                    stringBuilder.append(line);
                }
                JSONObject jsonSuccess = new JSONObject(stringBuilder.toString());
                jsonSuccess.put("status",200);
                res = jsonSuccess.toString();
                os.flush();
                os.close();
            }
            return res;
        }catch (Exception e){
            e.printStackTrace();
            return null;
        } finally {
            if(connection != null){
                connection.disconnect();
            }
            if(bufferedReader != null){
                try {
                    bufferedReader.close();
                }catch (IOException e){
                    e.printStackTrace();
                }
            }
        }
    }
}