Update flag API

api/src/main/java/de/epiceric/shopchest/api/flag/CreateFlag.java

@@ -0,0 +1,59 @@
+package de.epiceric.shopchest.api.flag;
+
+import de.epiceric.shopchest.api.ShopChest;
+import de.epiceric.shopchest.api.shop.ShopProduct;
+
+/**
+ * Represents the flag a player has after entering the create command
+ */
+public class CreateFlag extends TimedFlag {
+    private ShopProduct product;
+    private double buyPrice;
+    private double sellPrice;
+    private boolean admin;
+
+    public CreateFlag(ShopChest plugin, ShopProduct product, double buyPrice, double sellPrice, boolean admin) {
+        super(plugin, 15);
+        this.product = product;
+        this.buyPrice = buyPrice;
+        this.sellPrice = sellPrice;
+        this.admin = admin;
+    }
+
+    /**
+     * Gets the product the player wants to create a shop with
+     * 
+     * @return the product
+     */
+    public ShopProduct getProduct() {
+        return product;
+    }
+
+    /**
+     * Gets the price the player wants others to buy the product for
+     * 
+     * @return the buy price
+     */
+    public double getBuyPrice() {
+        return buyPrice;
+    }
+
+    /**
+     * Gets the price the player wants others to sell the product for
+     * 
+     * @return the sell price
+     */
+    public double getSellPrice() {
+        return sellPrice;
+    }
+
+    /**
+     * Gets whether the player wants to create an admin shop
+     * 
+     * @return whether the players wants to create an admin shop
+     */
+    public boolean isAdminShop() {
+        return admin;
+    }
+
+}

api/src/main/java/de/epiceric/shopchest/api/flag/Flag.java

@@ -1,9 +1,29 @@
 package de.epiceric.shopchest.api.flag;
 
+import de.epiceric.shopchest.api.player.ShopPlayer;
+
 /**
  * Represents a flag a player can have
  * 
- * @since  1.13
+ * @since 1.13
  */
 public interface Flag {
+
+    /**
+     * Called when this flag is assigned to a player
+     * 
+     * @param player the player
+     * @since 1.13
+     */
+    default void onAssign(ShopPlayer player) {};
+    
+    /**
+     * Called when this flag will be removed from a player
+     * <p>
+     * The flag will be removed after this method is called.
+     * 
+     * @param player the player
+     * @since 1.13
+     */
+    default void onRemove(ShopPlayer player) {};
 }

api/src/main/java/de/epiceric/shopchest/api/flag/InfoFlag.java

@@ -0,0 +1,12 @@
+package de.epiceric.shopchest.api.flag;
+
+import de.epiceric.shopchest.api.ShopChest;
+
+/**
+ * Represents the flag a player has after entering the info command
+ */
+public class InfoFlag extends TimedFlag {
+    public InfoFlag(ShopChest plugin) {
+        super(plugin, 15);
+	}
+}

api/src/main/java/de/epiceric/shopchest/api/flag/OpenFlag.java

@@ -0,0 +1,12 @@
+package de.epiceric.shopchest.api.flag;
+
+import de.epiceric.shopchest.api.ShopChest;
+
+/**
+ * Represents the flag a player has after entering the open command
+ */
+public class OpenFlag extends TimedFlag {
+    public OpenFlag(ShopChest plugin) {
+        super(plugin, 15);
+	}
+}

api/src/main/java/de/epiceric/shopchest/api/flag/RemoveFlag.java

@@ -0,0 +1,12 @@
+package de.epiceric.shopchest.api.flag;
+
+import de.epiceric.shopchest.api.ShopChest;
+
+/**
+ * Represents the flag a player has after entering the remove command
+ */
+public class RemoveFlag extends TimedFlag {
+    public RemoveFlag(ShopChest plugin) {
+        super(plugin, 15);
+	}
+}

api/src/main/java/de/epiceric/shopchest/api/flag/SelectFlag.java

@@ -0,0 +1,34 @@
+package de.epiceric.shopchest.api.flag;
+
+import org.bukkit.GameMode;
+
+import de.epiceric.shopchest.api.player.ShopPlayer;
+
+/**
+ * Represents the flag a player has after entering the create command
+ */
+public class SelectFlag implements Flag {
+    private GameMode gameMode;
+
+    public SelectFlag(GameMode gameMode) {
+        this.gameMode = gameMode;
+    }
+
+    /**
+     * Gets the game mode the player had before entering the command
+     * <p>
+     * This is used for resetting the game mode when the player has selected the
+     * product from the creative inventory.
+     * 
+     * @return the game mode
+     */
+    public GameMode getGameMode() {
+        return gameMode;
+    }
+
+    @Override
+    public void onRemove(ShopPlayer player) {
+        player.getPlayer().setGameMode(getGameMode());;
+    }
+
+}

api/src/main/java/de/epiceric/shopchest/api/flag/TimedFlag.java

@@ -0,0 +1,46 @@
+package de.epiceric.shopchest.api.flag;
+
+import org.bukkit.Bukkit;
+import org.bukkit.scheduler.BukkitTask;
+
+import de.epiceric.shopchest.api.ShopChest;
+import de.epiceric.shopchest.api.player.ShopPlayer;
+
+/**
+ * Represents a flag that is removed after a given time
+ */
+public abstract class TimedFlag implements Flag {
+    private ShopChest plugin;
+    private int seconds;
+    private BukkitTask task;
+
+    public TimedFlag(ShopChest plugin, int seconds) {
+        this.plugin = plugin;
+        this.seconds = seconds;
+    }
+
+    /**
+     * {@inheritDoc}
+     * <p>
+     * To use the functionality of this flag, a call to {@code super.onAssign(player)} is mandatory.
+     */
+    @Override
+    public void onAssign(ShopPlayer player) {
+        task = Bukkit.getScheduler().runTaskLater(plugin, () -> {
+            if (this.equals(player.getFlag())) {
+                player.removeFlag();
+            }
+        }, seconds * 20);
+    }
+
+    /**
+     * {@inheritDoc}
+     * <p>
+     * To use the functionality of this flag, a call to {@code super.onAssign(player)} is mandatory.
+     */
+    @Override
+    public void onRemove(ShopPlayer player) {
+        task.cancel();
+    }
+    
+}

api/src/main/java/de/epiceric/shopchest/api/player/ShopPlayer.java

@@ -45,7 +45,18 @@ public interface ShopPlayer {
      * @return whether this player has a flag
      * @since  1.13
      */
-    boolean hasFlag();
+    default boolean hasFlag() {
+        return getFlag() != null;
+    }
+
+    /**
+     * Removes this player's flag
+     * 
+     * @since 1.13
+     */
+    default void removeFlag() {
+        setFlag(null);
+    }
 
     /**
      * Gets the amount of shops the given player is allowed to have