Add more advancement API

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

paper-api/src/main/java/io/papermc/paper/advancement/AdvancementDisplay.java

@@ -0,0 +1,160 @@
+package io.papermc.paper.advancement;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.translation.Translatable;
+import net.kyori.adventure.util.Index;
+import org.bukkit.NamespacedKey;
+import org.bukkit.inventory.ItemStack;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+/**
+ * Describes the display of an advancement.
+ * <p>
+ * The display is used in the chat, in the toast messages and the advancements
+ * screen.
+ */
+@NullMarked
+public interface AdvancementDisplay {
+
+    /**
+     * Gets the {@link Frame}.
+     * <p>
+     * This defines the appearance of the tile in the advancements screen and
+     * the text when it's completed.
+     *
+     * @return the frame type
+     */
+    Frame frame();
+
+    /**
+     * Gets the advancement title.
+     *
+     * @return the title
+     */
+    Component title();
+
+    /**
+     * Gets the description.
+     *
+     * @return the description
+     */
+    Component description();
+
+    /**
+     * Gets the icon shown in the frame in the advancements screen.
+     *
+     * @return a copy of the icon
+     */
+    ItemStack icon();
+
+    /**
+     * Gets whether a toast should be displayed.
+     * <p>
+     * A toast is a notification that will be displayed in the top right corner
+     * of the screen.
+     *
+     * @return {@code true} if a toast should be shown
+     */
+    boolean doesShowToast();
+
+    /**
+     * Gets whether a message should be sent in the chat.
+     *
+     * @return {@code true} if a message should be sent
+     * @see org.bukkit.event.player.PlayerAdvancementDoneEvent#message() to edit
+     * the message
+     */
+    boolean doesAnnounceToChat();
+
+    /**
+     * Gets whether this advancement is hidden.
+     * <p>
+     * Hidden advancements cannot be viewed by the player until they have been
+     * unlocked.
+     *
+     * @return {@code true} if hidden
+     */
+    boolean isHidden();
+
+    /**
+     * Gets the texture displayed behind the advancement tree when selected.
+     * <p>
+     * This only affects root advancements without any parent. If the background
+     * is not specified or doesn't exist, the tab background will be the missing
+     * texture.
+     *
+     * @return the background texture path
+     */
+    @Nullable NamespacedKey backgroundPath();
+
+    /**
+     * Gets the formatted display name for this display. This
+     * is a part of the component that would be shown in chat when a player
+     * completes the advancement.
+     *
+     * @return the display name
+     * @see org.bukkit.advancement.Advancement#displayName()
+     */
+    Component displayName();
+
+    /**
+     * Defines how the {@link #icon()} appears in the advancements screen and
+     * the color used with the {@link #title() advancement name}.
+     */
+    enum Frame implements Translatable {
+
+        /**
+         * "Challenge complete" advancement.
+         * <p>
+         * The client will play the {@code ui.toast.challenge_complete} sound
+         * when the challenge is completed and the toast is shown.
+         */
+        CHALLENGE("challenge", NamedTextColor.DARK_PURPLE),
+
+        /**
+         * "Goal reached" advancement.
+         */
+        GOAL("goal", NamedTextColor.GREEN),
+
+        /**
+         * "Advancement made" advancement.
+         */
+        TASK("task", NamedTextColor.GREEN);
+
+        /**
+         * The name map.
+         */
+        public static final Index<String, Frame> NAMES = Index.create(Frame.class, frame -> frame.name);
+        private final String name;
+        private final TextColor color;
+
+        Frame(final String name, final TextColor color) {
+            this.name = name;
+            this.color = color;
+        }
+
+        /**
+         * Gets the {@link TextColor} used for the advancement name.
+         *
+         * @return the text color
+         */
+        public TextColor color() {
+            return this.color;
+        }
+
+        /**
+         * Gets the translation key used when an advancement is completed.
+         * <p>
+         * This is the first line of the toast displayed by the client.
+         *
+         * @return the toast message key
+         */
+        @Override
+        public String translationKey() {
+            return "advancements.toast." + this.name;
+        }
+    }
+}