Add action structure

plugin/src/main/java/de/epiceric/shopchest/action/ActionManager.java

@@ -33,12 +33,11 @@ public class ActionManager {
      * Get the current action of a {@link org.bukkit.entity.Player}
      *
      * @param uuid {@link org.bukkit.entity.Player}'s {@link UUID}
-     * @return An {@link Optional} {@link PendingAction} which is :
-     * - empty if there is no pending action for this player
-     * - filled by the current valid pending action if there is one
+     * @return A {@link PendingAction} which the player should do when interacting
      */
-    public Optional<PendingAction> getAction(UUID uuid) {
-        return Optional.ofNullable(playerActions.computeIfPresent(uuid, (k, v) -> v.hasExpired() ? null : v));
+    public PendingAction getAction(UUID uuid) {
+        final PendingAction action = playerActions.computeIfPresent(uuid, (k, v) -> v.hasExpired() ? null : v);
+        return action == null ? new InteractShopPendingAction(-1) : action;
     }
 
 }

plugin/src/main/java/de/epiceric/shopchest/action/CreatePendingAction.java

@@ -0,0 +1,18 @@
+package de.epiceric.shopchest.action;
+
+import org.bukkit.block.Block;
+
+import java.util.concurrent.CompletableFuture;
+
+public class CreatePendingAction extends ShopCheckerPendingAction {
+
+    public CreatePendingAction(long duration) {
+        super(duration, false);
+    }
+
+    @Override
+    public CompletableFuture<Void> execute(Block block) {
+        // Create a shop
+        return null;
+    }
+}

plugin/src/main/java/de/epiceric/shopchest/action/InteractShopPendingAction.java

@@ -0,0 +1,21 @@
+package de.epiceric.shopchest.action;
+
+import org.bukkit.block.Block;
+
+import java.util.concurrent.CompletableFuture;
+
+public class InteractShopPendingAction extends ShopCheckerPendingAction {
+
+    public InteractShopPendingAction(long duration) {
+        super(duration, true);
+    }
+
+    @Override
+    public CompletableFuture<Void> execute(Block block) {
+        // Get the Shop
+        // - if special condition (e.g. info stick) -> apply condition
+        // - if owner -> open it
+        // - else start transaction
+        return null;
+    }
+}

plugin/src/main/java/de/epiceric/shopchest/action/PendingAction.java

@@ -6,12 +6,10 @@ import java.util.concurrent.CompletableFuture;
 
 public abstract class PendingAction {
 
-    protected final Block block;
     protected final long endTime;
 
-    public PendingAction(Block block, long duration) {
-        this.block = block;
-        this.endTime = System.currentTimeMillis() + duration;
+    public PendingAction(long duration) {
+        this.endTime = duration < 0 ? -1 : (System.currentTimeMillis() + duration);
     }
 
     /**
@@ -28,7 +26,7 @@ public abstract class PendingAction {
      * @return {@code true} if this action is valid, {@code false} otherwise
      */
     public boolean hasExpired() {
-        return System.currentTimeMillis() > endTime;
+        return endTime != -1 && System.currentTimeMillis() > endTime;
     }
 
     /**

plugin/src/main/java/de/epiceric/shopchest/action/ShopCheckerPendingAction.java

@@ -0,0 +1,25 @@
+package de.epiceric.shopchest.action;
+
+import org.bukkit.block.Block;
+
+public abstract class ShopCheckerPendingAction extends ShopMaterialPendingAction {
+
+    private final boolean shouldBeShop;
+
+    public ShopCheckerPendingAction(long duration, boolean shouldBeShop) {
+        super(duration);
+        this.shouldBeShop = shouldBeShop;
+    }
+
+    @Override
+    public boolean canApply(Block block) {
+        if(!super.canApply(block)) {
+            return false;
+        }
+
+        // Check if it's a shop (Shop access should be kept somewhere in cache)
+        final boolean isShop = false;
+
+        return shouldBeShop == isShop;
+    }
+}

plugin/src/main/java/de/epiceric/shopchest/action/ShopMaterialPendingAction.java

@@ -0,0 +1,17 @@
+package de.epiceric.shopchest.action;
+
+import org.bukkit.block.Block;
+
+public abstract class ShopMaterialPendingAction extends PendingAction {
+
+    public ShopMaterialPendingAction(long duration) {
+        super(duration);
+    }
+
+    @Override
+    public boolean canApply(Block block) {
+        // Check if the block can be a shop
+        return false;
+    }
+
+}