package de.hs_mannheim.informatik.spreadsheet;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Part of a simplified spreadsheet system for the PR1 programming lab at Hochschule Mannheim.
 * 
 * @author  Oliver Hummel
 */
public class Axel {

	public static void main(String[] args) throws FileNotFoundException {
		Spreadsheet spr = new Spreadsheet(10,6);
		@SuppressWarnings("resource")
		Scanner input = new Scanner(System.in);
		String filePath = "Axel/resources/zahlen.csv";
		spr.readCsv(filePath,"A3");
		
		
		System.out.println("Schreibe 'stop' zum anhalten.");
		do{
			String command = "";
			String form = "";
			String cell= "";
			boolean cellTRUE = true;
			System.out.println(spr);
			System.out.println("Befehl (z.B. D4_=7*6): ");
			command = input.nextLine();
			if(command.matches("[A-Za-z][1-9][0-9]?_="
							+ "((((([A-Za-z][1-9][0-9]?)|([0-9]+))(\\*|\\+|\\-|\\/))*"
					        + "(([A-Za-z][1-9][0-9]?)|([0-9]+)))|"
					        + "((SUMME|PRODUKT|MID|STABW|MIN|MAX)\\(([A-Za-z][1-9][0-9]*\\:[A-Za-z][1-9][0-9]*)\\)))")) {
				for(int i = 0; i<command.length();i++) {
					if(command.charAt(i)=='_') {
						cellTRUE = false;
						continue;
					}
					if(cellTRUE) {
						cell+=command.charAt(i);
					}else {
						form+=command.charAt(i);
					}
				}
				spr.put(cell, form);
            }else if(command.matches("stop")){
            	break;
            }else {
            	System.out.println("Die Eingabe war nicht korrekt. Die Tabelle bleibt auf folgendem stand:");
            }
		}while(true);
		
		try (PrintWriter writer = new PrintWriter(new FileOutputStream(filePath))) {
		    spr.saveCsv(writer);
		    System.out.println("CSV file saved successfully.");
		} catch (FileNotFoundException e) {
		    System.err.println("Error: " + e.getMessage());
		}
	}

}