fix: #3 linking multiply items at the same time

Author: NgLoader

zip-plugin/src/main/java/net/imprex/zip/command/LinkCommand.java

@@ -71,6 +71,9 @@ public void onCommand(CommandSender sender, String[] args) {
 		} else if (linkingBackpack.equals(backpack)) {
 			this.messageConfig.send(player, MessageKey.ThisBackpackIsAlreadyLinkedThoThat);
 			return;
+		} else if (item.getAmount() > 1) {
+			this.messageConfig.send(player, MessageKey.StackedBackpacksCanNotBeLinked);
+			return;
 		}
 
 		linkingBackpack.applyOnItem(item);

zip-plugin/src/main/java/net/imprex/zip/config/MessageKey.java

@@ -55,6 +55,7 @@ public enum MessageKey {
 	YourBackpackLinkRequestWasCancelled("yourBackpackLinkRequestWasCancelled", "Your backpack link request was cancelled"),
 	BothBackpacksNeedToBeTheSameType("bothBackpacksNeedToBeTheSameType", "Both Backpacks need to be the same type"),
 	ThisBackpackIsAlreadyLinkedThoThat("thisBackpackIsAlreadyLinkedThoThat", "This backpack is already linked to that backpack"),
+	StackedBackpacksCanNotBeLinked("stackedBackpacksCanNotBeLinked", "Stacked backpacks can not be linked at the same time"),
 	PleaseEnterANumber("pleaseEnterANumber", "Please enter a number"),
 	EnterANumberBetweenArgsAndArgs("enterANumberBetweenArgsAndArgs", "Please enter a number between {0} and {1}"),
 	LoreLineCreate("loreLineCreate", "The lore line {0} was added"),

zip-plugin/src/main/resources/lang/en_US.yml

@@ -46,6 +46,7 @@ youNeedToLinkABackpackFirst: "You need to link a backpack at first"
 yourBackpackLinkRequestWasCancelled: "Your backpack link request was cancelled"
 bothBackpacksNeedToBeTheSameType: "Both Backpacks need to be the same type"
 thisBackpackIsAlreadyLinkedThoThat: "This backpack is already linked to that backpack"
+stackedBackpacksCanNotBeLinked: "Stacked backpacks can not be linked at the same time"
 pleaseEnterANumber: "Please enter a number"
 enterANumberBetweenArgsAndArgs: "Please enter a number between {0} and {1}"
 loreLineCreate: "The lore line {0} was added"