Feature: Statistic placeholder (#57)

* feat: Statistic placeholder

* move statistic resolver into its own class

* remove leftover imports

* fix indentation

* also fix indentation

* make placeholder player only

Author: fabianmakila

README.md

@@ -33,4 +33,6 @@ Player Expansion for MiniPlaceholders
 <player_world>
 
 <player_team>
+
+<player_statistic:<statistic>:[parameter]>
 ```

paper/src/main/java/io/github/miniplaceholders/expansion/player/paper/PaperProvider.java

@@ -5,6 +5,7 @@
 import io.github.miniplaceholders.expansion.player.common.resolver.DisplayNameResolver;
 import io.github.miniplaceholders.expansion.player.common.resolver.LocaleResolver;
 import io.github.miniplaceholders.expansion.player.common.resolver.NameResolver;
+import io.github.miniplaceholders.expansion.player.paper.resolver.StatisticResolver;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.tag.Tag;
 import org.bukkit.Server;
@@ -44,6 +45,7 @@ public Expansion.Builder provideBuilder() {
                 })
                 .audiencePlaceholder(Player.class, "tab_footer", (player, queue, ctx) -> {
                     return Tag.selfClosingInserting(Optional.ofNullable(player.playerListFooter()).orElse(Component.empty()));
-                });
+                })
+                .audiencePlaceholder(Player.class, "statistic", new StatisticResolver());
     }
 }

paper/src/main/java/io/github/miniplaceholders/expansion/player/paper/resolver/StatisticResolver.java

@@ -0,0 +1,66 @@
+package io.github.miniplaceholders.expansion.player.paper.resolver;
+
+import io.github.miniplaceholders.api.resolver.AudienceTagResolver;
+import net.kyori.adventure.text.minimessage.Context;
+import net.kyori.adventure.text.minimessage.tag.Tag;
+import net.kyori.adventure.text.minimessage.tag.resolver.ArgumentQueue;
+import org.bukkit.Material;
+import org.bukkit.Statistic;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Locale;
+
+public final class StatisticResolver implements AudienceTagResolver<@NotNull Player> {
+    @Override
+    public @NotNull Tag tag(@NotNull Player player, @NotNull ArgumentQueue queue, @NotNull Context ctx) {
+        if (!queue.hasNext()) {
+            return Tag.preProcessParsed("You need to provide a statistic");
+        }
+
+        Statistic statistic;
+        try {
+            statistic = Statistic.valueOf(queue.pop().value().toUpperCase(Locale.ROOT));
+        } catch (IllegalArgumentException e) {
+            return Tag.preProcessParsed("Unknown statistic");
+        }
+
+        switch (statistic.getType()) {
+            case UNTYPED -> {
+                return Tag.preProcessParsed(String.valueOf(player.getStatistic(statistic)));
+            }
+            case ITEM, BLOCK -> {
+                if (!queue.hasNext()) {
+                    return Tag.preProcessParsed("You need to provide a material");
+                }
+
+                Material material;
+                try {
+                    material = Material.valueOf(queue.pop().value().toUpperCase(Locale.ROOT));
+                } catch (IllegalArgumentException e) {
+                    return Tag.preProcessParsed("Unknown material");
+                }
+
+                return Tag.preProcessParsed(String.valueOf(player.getStatistic(statistic, material)));
+            }
+            case ENTITY -> {
+                if (!queue.hasNext()) {
+                    return Tag.preProcessParsed("You need to provide an entity");
+                }
+
+                EntityType entity;
+                try {
+                    entity = EntityType.valueOf(queue.pop().value().toUpperCase(Locale.ROOT));
+                } catch (IllegalArgumentException e) {
+                    return Tag.preProcessParsed("Unknown entity");
+                }
+
+                return Tag.preProcessParsed(String.valueOf(player.getStatistic(statistic, entity)));
+            }
+            default -> {
+                return Tag.preProcessParsed("Unknown statistic type");
+            }
+        }
+    }
+}