From d950b04be526621348dde53e195efdaa6d9b874d Mon Sep 17 00:00:00 2001
From: Jan <Dr.Janson@DESKTOP-AD348NI.fritz.box>
Date: Sun, 7 Jan 2024 18:58:12 +0100
Subject: [PATCH] UiLoop csv read und save

---
 .../informatik/spreadsheet/Axel.java          | 72 ++++++++++++++++---
 .../informatik/spreadsheet/Spreadsheet.java   | 12 ++++
 2 files changed, 73 insertions(+), 11 deletions(-)

diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
index d48fa56..d575548 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java
@@ -1,5 +1,6 @@
 package de.hs_mannheim.informatik.spreadsheet;
 
+import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.PrintWriter;
@@ -14,18 +15,64 @@ public class Axel {
 
 	public static void main(String[] args) throws FileNotFoundException {
 		Spreadsheet spr = new Spreadsheet(10,6);
+		boolean UiLoop = true;
 		@SuppressWarnings("resource")
 		Scanner input = new Scanner(System.in);
-		String filePath = "Axel/resources/zahlen.csv";
-		spr.readCsv(filePath,"A3");
+		String filePath = "Axel/resources/";
+		System.out.println("Wilkommen zum coolsten Spreadsheet Programm der Welt!(Cooler als Devran Cakici´s 3009694)");
 		
+		System.out.println("Was möchten sie machen?");
 		
-		System.out.println("Schreibe 'stop' zum anhalten.");
-		do{
+		System.out.println("\n 1. Dokument öffnen");
+		System.out.println(" 2. Neues Dokument erstellen");
+		System.out.println(" 3. Programm schließen");
+		System.out.print("-> ");
+		String docSlct = input.nextLine();
+		
+		switch(docSlct) {
+			case "1":
+		        File folder = new File(filePath);
+		        
+		        if (folder.exists() && folder.isDirectory()) {
+		            File[] files = folder.listFiles((dir, name) -> name.toLowerCase().endsWith(".csv"));
+		            
+		            if (files != null) {
+		                System.out.println("\nWähle eine Datei aus: ");
+		                System.out.println("");
+		                for (int i = 0; i < files.length; i++) {
+		                    System.out.println(i+1 + ": " + files[i].getName());
+		                }
+		                System.out.println();
+		                spr.readCsv(filePath+=files[Integer.parseInt(input.nextLine())-1].getName(),"");
+		            } else {
+		                System.out.println("Es wurden noch keine Datei angelegt.");
+		            }
+		        }else {
+		            System.out.println("Ungültiges Verzeichnis oder Verzeichnis existiert nicht.");
+		            System.out.println("Geben sie hier ihr verzeichnis ein in dem sie Arbeiten möchten: ");
+		            filePath = input.nextLine();
+		            
+		        }
+		        
+				break;
+			case "2":
+				System.out.println("Reihen: ");
+				int rows = Integer.parseInt(input.nextLine());
+				System.out.println("Spalten: ");
+				int cols = Integer.parseInt(input.nextLine());
+				spr.changeSize(rows, cols);
+				break;
+			case "3":
+				UiLoop = false;
+				break;
+		}
+		while(UiLoop){
 			String command = "";
 			String form = "";
 			String cell= "";
 			boolean cellTRUE = true;
+			
+			System.out.println("Schreibe 'stop' zum anhalten.");
 			System.out.println(spr);
 			System.out.println("Befehl (z.B. D4_=7*6): ");
 			command = input.nextLine();
@@ -47,16 +94,19 @@ public class Axel {
 				spr.put(cell, form);
             }else if(command.matches("stop")){
             	break;
+            }else if(command.startsWith("save")){
+            	String csvName=command.substring(5)+".csv";
+            	String savePath = "Axel/resources/";
+            	try (PrintWriter writer = new PrintWriter(new FileOutputStream(savePath+csvName))) {
+        		    spr.saveCsv(writer);
+        		    System.out.println("CSV file saved successfully.");
+        		} catch (FileNotFoundException e) {
+        		    System.err.println("Error: " + e.getMessage());
+        		}
+            	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());
 		}
 	}
 
diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
index bb09fb5..1ff2a95 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
@@ -36,6 +36,18 @@ public class Spreadsheet {
 			for (int c = 0; c < colWithMax26; c++)
 				cells[r][c] = new Cell();
 	}
+	public void changeSize(int rows, int cols) {
+		cells = new Cell[0][0];
+		
+		int rowWithMax99= Math.min(rows, 99);
+		int colWithMax26= Math.min(cols, 26);
+
+		cells = new Cell[rowWithMax99][colWithMax26];
+
+		for (int r = 0; r < rowWithMax99; r++)
+			for (int c = 0; c < colWithMax26; c++)
+				cells[r][c] = new Cell();
+	}
 
 	// -----
 	/*