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package fr.koor.webstore.servlet;

import java.io.IOException;
import java.text.NumberFormat;
import java.util.Locale;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.itextpdf.io.font.FontProgram;
import com.itextpdf.io.font.FontProgramFactory;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfPage;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;

import fr.koor.webstore.business.Article;
import fr.koor.webstore.business.ShoppingCartLine;

@WebServlet( "/pdfexport" )
public class PDFExport extends HttpServlet {

    private static final long serialVersionUID = 7609134248482865644L;

    
    @Override
    protected void doGet( HttpServletRequest request, HttpServletResponse response )
            throws ServletException, IOException {
        
        int idCommand = 0;
        try { 
            idCommand = Integer.parseInt( request.getParameter( "idCommand" ) );
        } catch (Exception exception ) {
            // Nothing to do
        }
        ShoppingCartLine [] lines = {
            new ShoppingCartLine( new Article( 1, "Stylo bille", "Bic", 0.2 ), 5 ),
            new ShoppingCartLine( new Article( 18, "Bonbon", "Haribo", 0.1 ), 50 ),
        };
        
        String masterPath = request.getServletContext().getRealPath( "/WEB-INF/FacMaster.pdf" );
        response.setContentType( "application/pdf" );
        
        try ( PdfReader reader = new PdfReader( masterPath );
              PdfWriter writer = new PdfWriter( response.getOutputStream() );
              PdfDocument document = new PdfDocument( reader, writer ) ) {
            
            PdfPage page = document.getPage( 1 );
            PdfCanvas canvas = new PdfCanvas( page );
            
            FontProgram fontProgram = FontProgramFactory.createFont();
            PdfFont font = PdfFontFactory.createFont( fontProgram, "utf-8", true );
            canvas.setFontAndSize( font, 12 );
            
            canvas.beginText();
            
            canvas.setTextMatrix( 0, 0 );
            canvas.showText( "Origine" );
            
            canvas.setTextMatrix( 470, 760 );
            canvas.showText( "" + idCommand );
            
            int top = 500;
            double totalPrice = 0;
            NumberFormat formatter = NumberFormat.getNumberInstance( new Locale( "fr", "FR" ) );
            
            for (ShoppingCartLine line : lines) {
                Article article = line.getArticle();
                
                canvas.setTextMatrix( 116, top );
                canvas.showText( "" + article.getIdArticle() );

                canvas.setTextMatrix( 200, top );
                canvas.showText( article.getDescription() );

                canvas.setTextMatrix( 270, top );
                canvas.showText( article.getBrand() );

                canvas.setTextMatrix( 341, top );
                canvas.showText( formatter.format( article.getUnitaryPrice() ) );

                canvas.setTextMatrix( 412, top );
                canvas.showText( "" + line.getQuantity() );

                double totalLine = article.getUnitaryPrice() * line.getQuantity();
                totalPrice += totalLine;
                canvas.setTextMatrix( 482, top );
                canvas.showText( formatter.format( totalLine ) );
                
                top -= 20;
            }
            
            canvas.setTextMatrix( 482, 240 );
            canvas.showText( formatter.format( totalPrice ) );

            canvas.setTextMatrix( 482, 216 );
            canvas.showText( formatter.format( totalPrice * 0.2 ) );

            canvas.setTextMatrix( 482, 192 );
            canvas.showText( formatter.format( totalPrice * 1.2 ) );
            
            canvas.endText();
            
        }
        
    }
    
}