package ve.gob.cenditel.tibisaymovil;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Vector;

import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class SelectSignUbicationHandwrittenSignatureActivity extends Activity{
	
	private TextView selected_position = null;
    private String fileToSign;
    private String imageCaptured;
    private float x_coef, y_coef;
    private LinearLayout button_accept, button_cancel;
    private PdfReader pdfReader;
    private Spinner spinner_page_number;
    private String tempDir;
	
	@Override		
	protected void onCreate(Bundle savedInstanceState) {

			
        //Capturando archivo que será firmado
        fileToSign = getIntent().getExtras().getString("FILE_TO_SIGN");
        //Capturando imagen de firma
        imageCaptured = getIntent().getExtras().getString("IMAGE_CAPTURED");
	        
		//Estilando la barra de titulo
		final boolean customTitleSupported = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
	
		super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_select_sign_ubication_handwritten_signature);
	    //Estilando Barra de titulo
		if(customTitleSupported)
			getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title_bar);

        TextView text_view_11 = (TextView) this.findViewById(R.id.textView11);
        TextView text_view_12 = (TextView) this.findViewById(R.id.textView12);
        TextView text_view_13 = (TextView) this.findViewById(R.id.textView13);

        TextView text_view_21 = (TextView) this.findViewById(R.id.textView21);
        TextView text_view_22 = (TextView) this.findViewById(R.id.textView22);
        TextView text_view_23 = (TextView) this.findViewById(R.id.textView23);

        TextView text_view_31 = (TextView) this.findViewById(R.id.textView31);
        TextView text_view_32 = (TextView) this.findViewById(R.id.textView32);
        TextView text_view_33 = (TextView) this.findViewById(R.id.textView33);
        
        spinner_page_number = (Spinner) findViewById(R.id.pages_spinner);

        button_accept = (LinearLayout) this.findViewById(R.id.button_accept_zone);
        button_cancel = (LinearLayout) this.findViewById(R.id.button_cancel_zone);  

        button_accept.setEnabled(false);
        

        
        
        
        
        AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {

            private ProgressDialog pd;

            @Override
            protected void onPreExecute() {

	             pd = new ProgressDialog(SelectSignUbicationHandwrittenSignatureActivity.this);	
	             pd.setTitle(getString(R.string.title_progress_file_read));	
	             pd.setMessage(getString(R.string.por_favor_epsere));	
	             pd.setCancelable(false);	
	             pd.setIndeterminate(true);	
	             pd.show();

            }

            @Override
            protected Void doInBackground(Void... arg0) {

        	//Cargar Spinner
            //Cargar PDF
            try{
			  pdfReader = new PdfReader(fileToSign);
      		  
      		} catch (IOException e) {
			    e.printStackTrace();
			    
			    //Si el archivo no puede ser leído se envía al activity de selectionar archivo
			    Intent oIntent = new Intent(SelectSignUbicationHandwrittenSignatureActivity.this,
			    		FileToSignHandwrittenSignatureActivity.class);
		        oIntent.setAction(Intent.ACTION_VIEW);
		        oIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
		        startActivity(oIntent);
		        finish();
			    Toast.makeText(SelectSignUbicationHandwrittenSignatureActivity.this,
			    			   	SelectSignUbicationHandwrittenSignatureActivity.this.getString(R.string.error_lectura), 
			    			   	Toast.LENGTH_SHORT).show();
    		}

                return null;
         }            
         @Override
         protected void onPostExecute(Void result) {
        	 
			  int number_pages = pdfReader.getNumberOfPages();
				
			  Vector<String> pages_vector = new Vector<String>();
			  for(int i = 0; i < number_pages ; i++)
				  pages_vector.add(String.valueOf(i+1));
			  
			  // Create an ArrayAdapter using the string array and a default spinner layout
			  ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(
					  SelectSignUbicationHandwrittenSignatureActivity.this,
					  android.R.layout.simple_spinner_item, pages_vector);
			  // Specify the layout to use when the list of choices appears
			  spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
			  // Apply the adapter to the spinner
			  spinner_page_number.setAdapter(spinnerArrayAdapter);

             pd.dismiss();

         }

        };

        task.execute((Void[])null);
        
    
        
        button_accept.setOnClickListener(new OnClickListener() 
        {        
            public void onClick(View v) 
            {
                pdfSignatureDig();
            }
        });
        
        button_cancel.setOnClickListener(new OnClickListener() 
        {        
            public void onClick(View v) 
            {
                finish();
            }
        });
        

        OnClickListener listen_area = new OnClickListener() {
        	
			@Override
			public void onClick(View v) {
				
				if(!button_accept.isEnabled()) button_accept.setEnabled(true);
				
				if(selected_position != null) {
					selected_position.setBackgroundResource(R.drawable.shape_table1);
				}				
				v.setBackgroundColor(getResources().getColor(R.color.gris1));
				selected_position = (TextView) v;
				
				int cols = 3;
				int rows = 3;
				int row = 0;
				int col = 0;
				switch (v.getId()) {
				case R.id.textView11:
					row = 1;
					col = 1;
					break;
				case R.id.textView12:
					row = 1;
					col = 2;
					break;
				case R.id.textView13:
					row = 1;
					col = 3;
					break;
				case R.id.textView21:
					row = 2;
					col = 1;
					break;
				case R.id.textView22:
					row = 2;
					col = 2;
					break;
				case R.id.textView23:
					row = 2;
					col = 3;
					break;
				case R.id.textView31:
					row = 3;
					col = 1;
					break;
				case R.id.textView32:
					row = 3;
					col = 2;
					break;
				case R.id.textView33:
					row = 3;
					col = 3;
					break;

				default:
					break;
				}
				
				// Coeficientes para calcular la posición de la firma
				x_coef = (float)col/(float)cols - 1f/(float)cols/2f;
				y_coef = ((float)rows-(float)row+1)/(float)rows - 1f/(float)rows/2f;
							
			}
        };

        text_view_11.setOnClickListener(listen_area);
        text_view_12.setOnClickListener(listen_area);
        text_view_13.setOnClickListener(listen_area);
        
        text_view_21.setOnClickListener(listen_area);
        text_view_22.setOnClickListener(listen_area);
        text_view_23.setOnClickListener(listen_area);

        text_view_31.setOnClickListener(listen_area);
        text_view_32.setOnClickListener(listen_area);
        text_view_33.setOnClickListener(listen_area);
	}
	
	public boolean pdfSignatureDig(){
		try{
		  // Número de página seleccionada
		  int number_page = Integer.parseInt(spinner_page_number.getSelectedItem().toString());
		  // Lee el archivo pdf
		 // PdfReader pdfReader = new PdfReader(fileToSign);
		  
		  // Crea un archivo de salida para estampar la firma
	      String uniqueId = getTodaysDate() + "_" + getCurrentTime();
	      
		  String output_filename = "firmaManuscrita"+uniqueId+".pdf";
		  
		  tempDir = Environment.getExternalStorageDirectory() + "/" +
      			getResources().getString(R.string.app_name) + "/" +
      			getResources().getString(R.string.external_dir_files) + "/";
		  prepareDirectory();
		  PdfStamper pdfStamper = new PdfStamper(pdfReader, new FileOutputStream(tempDir+output_filename));

		  // Obtiene referencia a la imágen de la firma
          Image image = Image.getInstance(imageCaptured);

          image.scalePercent(75); //Escala al 75%
          
          // Obtiene las dimensiones de la página
          Rectangle rec = pdfReader.getPageSize(number_page);
          float page_width = rec.getWidth();
          float page_height = rec.getHeight();
          
          /*
           * Calcula la posición de la firma basada en los coeficientes
           * y el tamaño de la página a firmar
           */
          float x = (page_width  * x_coef) - image.getWidth() / 2;
          float y = (page_height * y_coef) - image.getHeight() / 2;
        	  
          //put content under
          PdfContentByte content = pdfStamper.getUnderContent(number_page);
          //put content over
          content = pdfStamper.getOverContent(number_page);

          image.setAbsolutePosition(x, y);
          content.addImage(image);

          pdfStamper.close();
          
//          Toast.makeText(getApplicationContext(), "Archivo firmado correctamente...", Toast.LENGTH_LONG).show();
//          finish();
          Intent intent = new Intent(SelectSignUbicationHandwrittenSignatureActivity.this,
        		  SignResultHandwrittenSignatureActivity.class);
          intent.putExtra("STATUS", "done");
          intent.putExtra("IMAGE_CAPTURED", imageCaptured);
          intent.putExtra("FILE_TO_SIGN", fileToSign);
          intent.putExtra("FILE_SIGNED", output_filename);
          intent.putExtra("PATH_FILE_SIGNED", tempDir);
          startActivity(intent);
		 
		}catch (IOException e) {
            e.printStackTrace();
            Toast.makeText(getApplicationContext(), "Error al firmar el archivo", Toast.LENGTH_LONG).show();
        }catch (DocumentException e) {
            e.printStackTrace();
            Toast.makeText(getApplicationContext(), "Error al firmar el archivo", Toast.LENGTH_LONG).show();
        }
		return true;
	}
 
    private String getTodaysDate() { 
 
        final Calendar c = Calendar.getInstance();
        int todaysDate =     (c.get(Calendar.YEAR) * 10000) + 
        ((c.get(Calendar.MONTH) + 1) * 100) + 
        (c.get(Calendar.DAY_OF_MONTH));
        return(String.valueOf(todaysDate));
 
    }
 
    private String getCurrentTime() {
 
        final Calendar c = Calendar.getInstance();
        int currentTime =     (c.get(Calendar.HOUR_OF_DAY) * 10000) + 
        (c.get(Calendar.MINUTE) * 100) + 
        (c.get(Calendar.SECOND));
        return(String.valueOf(currentTime));
 
    }
	 
    /**
     * Prepara directorio
     * @return boolean
     */
    private boolean prepareDirectory() 
    {
        try
        {
            if (makedirs()) 
            {
                return true;
            } else {
                return false;
            }
        } catch (Exception e) 
        {
            e.printStackTrace();
            Toast.makeText(this, "Could not initiate File System.. Is Sdcard mounted properly?", Toast.LENGTH_LONG).show();
            return false;
        }
    }
 
    /**
     * Crea directorio utilizando la variable tmpDir
     * @return boolean
     */
    private boolean makedirs() 
    {
        File tempdir = new File(tempDir);
        if (!tempdir.exists())
            tempdir.mkdirs();
 
//        if (tempdir.isDirectory()) 
//        {
//            File[] files = tempdir.listFiles();
//            for (File file : files) 
//            {
//                if (!file.delete()) 
//                {
//                    System.out.println("Failed to delete " + file);
//                }
//            }
//        }
        return (tempdir.isDirectory());
    }
		
		
}