Merge pull request #11 from Polymeta/feature/player-compare-predicate

introduce new player compare predicate

src/main/java/me/wesley1808/advancedchat/impl/predicates/PlayerPredicateCompare.java

@@ -0,0 +1,45 @@
+package me.wesley1808.advancedchat.impl.predicates;
+
+import com.mojang.serialization.MapCodec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
+import eu.pb4.predicate.api.MinecraftPredicate;
+import eu.pb4.predicate.api.PredicateContext;
+import eu.pb4.predicate.api.PredicateResult;
+import eu.pb4.predicate.impl.predicates.GenericObject;
+import me.wesley1808.advancedchat.api.AbstractChatPredicate;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.level.ServerPlayer;
+
+import java.util.Objects;
+
+public class PlayerPredicateCompare extends AbstractChatPredicate {
+    public static final ResourceLocation ID = ResourceLocation.tryBuild("advancedchat", "compare");
+    public static final MapCodec<PlayerPredicateCompare> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
+            GenericObject.CODEC.fieldOf("compare_predicate").forGetter((x) -> x.predicateObj)
+    ).apply(instance, PlayerPredicateCompare::new));
+
+    private final Object predicateObj;
+    private final MinecraftPredicate predicate;
+
+    public PlayerPredicateCompare(Object predicateObj) {
+        super(ID, CODEC);
+
+        this.predicateObj = predicateObj;
+        this.predicate = GenericObject.toPredicate(predicateObj);
+    }
+
+    @Override
+    public PredicateResult<?> test(ServerPlayer sender, ServerPlayer target) {
+        var val1 = this.predicate.test(PredicateContext.of(sender));
+        var val2 = this.predicate.test(PredicateContext.of(target));
+
+        if (val1.value() instanceof Component text && val2.value() instanceof String string) {
+            return PredicateResult.ofBoolean(text.getString().equals(string));
+        } else if (val2.value() instanceof Component text && val1.value() instanceof String string) {
+            return PredicateResult.ofBoolean(text.getString().equals(string));
+        } else {
+            return PredicateResult.ofBoolean(val1.success() == val2.success() && Objects.equals(val1.value(), val2.value()));
+        }
+    }
+}

src/main/java/me/wesley1808/advancedchat/impl/predicates/Predicates.java

@@ -7,5 +7,6 @@ public class Predicates {
     public static void register() {
         PredicateRegistry.register(CustomDistancePredicate.ID, CustomDistancePredicate.CODEC);
         PredicateRegistry.register(ChannelPredicate.ID, ChannelPredicate.CODEC);
+        PredicateRegistry.register(PlayerPredicateCompare.ID, PlayerPredicateCompare.CODEC);
     }
 }