package Presenter.ImportExport;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;

/**
 * Implementierung verschiedener Algorithmen zur Berechnung von Ausgleichsgeraden.
 *
 * @Author: Armin Wolf
 * @Email: a_wolf28@uni-muenster.de
 * @Date: 08.09.2017.
 */
public class EvalResultLatexExport {

  private DefaultTableModel model;
  private File file;

  public EvalResultLatexExport(DefaultTableModel model, File file ) {
    this.model = model;
    this.file = file;
  }

  /**
   * e.g. Source: <url>https://en.wikibooks.org/wiki/LaTeX/Tables</url>
   * \begin{tabular}{l*{3}{c}}
   *    Team              & P & W & D & L & F  & A & Pts \\\hline
   *    Manchester United & 6 & 4 & 0 & 2 & 10 & 5 & 12  \\
   *    Celtic            & 6 & 3 & 0 & 3 &  8 & 9 &  9  \\
   *    Benfica           & 6 & 2 & 1 & 3 &  7 & 8 &  7  \\
   *    FC Copenhagen     & 6 & 2 & 1 & 3 &  5 & 8 &  7  \\
   * \end{tabular}
   *
   *
   * @return
   */
  private String createOutputData(){
    String split = "&";
    StringBuilder doc = new StringBuilder();
    doc.append("\\begin{tabular}{l|*{3}{r}}"+"\r\n");
      for (int i=0;i<model.getColumnCount();i++){
        if (model.getValueAt(0,i).toString() != "" || model.getRowCount() > 5)
          doc.append("\\textsc{" + model.getColumnName(i) + "}"+split);
      }

    doc.deleteCharAt(doc.lastIndexOf(split));
    doc.append("\\\\\\hline\\hline"+"\r\n");

    for (int i=0;i<model.getRowCount()-1;i++){
      for (int j=0;j<model.getColumnCount();j++){
        if (model.getValueAt(i,j).toString() != "") {
          if (j == 0){
            doc.append("\\textbf{"+model.getValueAt(i, j).toString()+ "}" + split);
          } else {
            Double val = Double.parseDouble((String) model.getValueAt(i, j));
            doc.append(String.format("%.3f",val) + split);
          }
        }
      }
      if (model.getValueAt(i,0) != "") {
        doc.deleteCharAt(doc.lastIndexOf(split));
      }
      doc.append("\\\\"+"\r\n");
    }
    doc.append("\\end{tabular}");
    return doc.toString();
  }

  public void writeFile(){
    FileWriter fileWriter = null;
    BufferedWriter bufferedWriter = null;
    try {
      fileWriter = new FileWriter(file);
      bufferedWriter = new BufferedWriter(fileWriter);
      bufferedWriter.write(createOutputData());
      SwingUtilities.invokeLater(()->{
        JOptionPane.showMessageDialog(null,"Export war Erfolgreich!");
      });


    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      try {
        bufferedWriter.close();
        fileWriter.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }

  }

}