implementing request for item and amount

src/main/java/org/bitbiome/commands/ShopCommand.java

@@ -1,7 +1,9 @@
 package org.bitbiome.commands;
 
+import org.bitbiome.shop.Item;
 import org.bitbiome.shop.Shop;
 
+import java.util.ArrayList;
 import java.util.Scanner;
 
 public class ShopCommand implements CommandAPI{
@@ -12,16 +14,47 @@ public class ShopCommand implements CommandAPI{
         System.out.println("Willkommen im Shop!");
         System.out.println("Folgende Items sind aktuell im Shop:");
         shop.printCurrentShopItems();
+        ArrayList<Item> currentItems;
+
+        while (true){
             System.out.println("Was willst Du hier im Shop?");
             System.out.println("Etwas kaufen: 1");
             System.out.println("Das Quiz spielen: 2");
             System.out.println("Den Shop verlassen: 3");
 
-        while (true){
             String input = scanner.nextLine();
             if(validInput(input)){
                 if(input.equals("1")){
-                    //shop.buy();
+                    currentItems = shop.currentShopItems;
+                    String inp = "";
+                    System.out.println("");
+                    System.out.println("Welches Item wollen Sie kaufen? ");
+                    for(int i = 0; i < currentItems.size(); i++){
+                        System.out.println((i + 1) + " eingaben fuer " + currentItems.get(i).name + " | Kosten: " + currentItems.get(i).gold + " | Anzahl: " + currentItems.get(i).amount);
+                    }
+                    System.out.println("0 eingeben fuer eine andere Option.");
+
+                    while (true){
+                        inp = scanner.nextLine();
+                        if(inp.equals("0")){
+                            break;
+                        }
+                        System.out.print("Anzahl eingeben: ");
+                        int existingCount = currentItems.get(Integer.parseInt(inp) - 1).amount;
+                        String inpAmount = scanner.nextLine();
+                        if(Integer.parseInt(inpAmount) <= existingCount){
+                            if(shop.buy(currentItems.get(Integer.parseInt(inp) - 1).name, Integer.parseInt(inpAmount))){
+                                System.out.println("");
+                                System.out.println("Vielen Dank fuer deinen Einkauf!");
+                                System.out.println("");
+                                break;
+                            }else {
+                                break;
+                            }
+                        }else {
+                            System.out.println("Error!");
+                        }
+                    }
                 } else if(input.equals("2")){
                     //shop.quiz()
                 } else if(input.equals("3")){