package com.example.patrice.http01;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

// https://androidexample.com/Restful_Webservice_Call_And_Get_And_Parse_JSON_Data-_Android_Example/index.php?view=article_discription&aid=101

// http://www.anandsingh.net/2016/12/android-login-using-http-post-request.html  ++++++

// https://www.android-examples.com/android-select-image-from-gallery-upload-to-server-example/   +++++++ mega bien


public class http08 extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.http08_layout);

        final Button GetServerData = (Button) findViewById(R.id.GetServerData);

        GetServerData.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {

                // WebServer Request URL
                //String serverURL = "/media/webservice/JsonReturn.php";

                String serverURL = "http://analog-design.net/WORKAREA/WEBSITE/Codebar/http08.php";

                // Use AsyncTask execute Method To Prevent ANR Problem
                new LongOperation().execute(serverURL);
            }
        });

    }


    // Class with extends AsyncTask class

    private class LongOperation  extends AsyncTask<String, Void, Void> {

        // Required initialization

        private final HttpClient Client = new DefaultHttpClient();
        private String Content;
        private String Error = null;
        private ProgressDialog Dialog = new ProgressDialog(http08.this);
        String data ="";
        TextView uiUpdate = (TextView) findViewById(R.id.output);
        TextView jsonParsed = (TextView) findViewById(R.id.jsonParsed);
        int sizeData = 0;
        EditText serverText = (EditText) findViewById(R.id.serverText);


        protected void onPreExecute() {
            // NOTE: You can call UI Element here.

            //Start Progress Dialog (Message)

            Dialog.setMessage("Please wait..");
            Dialog.show();

            try{
                // Set Request parameter
                data +="&" + URLEncoder.encode("data", "UTF-8") + "="+serverText.getText();

            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

        // Call after onPreExecute method
        protected Void doInBackground(String... urls) {

            /************ Make Post Call To Web Server ***********/
            BufferedReader reader=null;

            // Send data
            try
            {

                // Defined URL  where to send data
                URL url = new URL(urls[0]);

                // Send POST data request

                URLConnection conn = url.openConnection();
                conn.setDoOutput(true);
                OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
                wr.write( data );
                wr.flush();

                // Get the server response

                reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                StringBuilder sb = new StringBuilder();
                String line = null;

                // Read Server Response
                while((line = reader.readLine()) != null)
                {
                    // Append server response in string
                    sb.append(line + " ");
                }

                // Append Server Response To Content String
                Content = sb.toString();
            }
            catch(Exception ex)
            {
                Error = ex.getMessage();
            }
            finally
            {
                try
                {

                    reader.close();
                }

                catch(Exception ex) {}
            }

            /*****************************************************/
            return null;
        }

        protected void onPostExecute(Void unused) {
            // NOTE: You can call UI Element here.

            // Close progress dialog
            Dialog.dismiss();

            if (Error != null) {

                uiUpdate.setText("Output : "+Error);

            } else {

                // Show Response Json On Screen (activity)
                uiUpdate.setText( Content );

                /****************** Start Parse Response JSON Data *************/

                String OutputData = "";
                JSONObject jsonResponse;

                try {

                    /****** Creates a new JSONObject with name/value mappings from the JSON string. ********/
                    jsonResponse = new JSONObject(Content);

                    /***** Returns the value mapped by name if it exists and is a JSONArray. ***/
                    /*******  Returns null otherwise.  *******/
                    JSONArray jsonMainNode = jsonResponse.optJSONArray("Android");

                    /*********** Process each JSON Node ************/

                    int lengthJsonArr = jsonMainNode.length();

                    for(int i=0; i < lengthJsonArr; i++)
                    {
                        /****** Get Object for each JSON node.***********/
                        JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);

                        /******* Fetch node values **********/
                        String name       = jsonChildNode.optString("name").toString();
                        String number     = jsonChildNode.optString("number").toString();
                        String date_added = jsonChildNode.optString("date_added").toString();


                        OutputData += " Name        : "+ name +"  "   + "Number      : "+ number +"  "   + "Time   " +
                                "             : "+ date_added +"  " + "--------------------------------------------------                       ";

                    }
                    /****************** End Parse Response JSON Data *************/

                    //Show Parsed Output on screen (activity)
                    jsonParsed.setText( OutputData );


                } catch (JSONException e) {

                    e.printStackTrace();
                }


            }
        }

    }

}