From 053f80f7e624cf79e54a9a97a645086efe36225c Mon Sep 17 00:00:00 2001
From: Smimg <noahnmj@gmail.com>
Date: Mon, 7 Oct 2024 13:38:35 -0400
Subject: [PATCH] Added a few Object Serializers

---
 build.gradle                                  |  2 +-
 .../serialization/SerializeToBytes.java       | 40 ++++++++++++++++
 .../serialization/SerializeToPDC.java         | 48 +++++++++++++++++++
 3 files changed, 89 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToBytes.java
 create mode 100644 src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToPDC.java

diff --git a/build.gradle b/build.gradle
index eac572e..03c413b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
 }
 
 group = 'org.vindicterra'
-version = '0.0.0-testing'
+version = '0.0.0-dev'
 
 publishing {
     publications {
diff --git a/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToBytes.java b/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToBytes.java
new file mode 100644
index 0000000..479391a
--- /dev/null
+++ b/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToBytes.java
@@ -0,0 +1,40 @@
+package org.vindicterra.vindicterraLib.serialization;
+
+import java.io.*;
+
+/**
+ * Generic implementation of Java object serialization.
+ * Objects to be serialized must implement the "java.io.Serializable" interface.
+ * For a higher-level PDC serializer, check vindicterraLib.serialization.SerializeToPDC
+ */
+public class SerializeToBytes {
+    /**
+     *
+     * @param obj The Object to serialize
+     * @return  A byte[] representing the serialized object
+     * @throws IOException (I've never had it raise this, so I don't know what would cause it)
+     */
+    public static byte[] serialize(Object obj) throws IOException {
+        try(ByteArrayOutputStream b = new ByteArrayOutputStream()){
+            try(ObjectOutputStream o = new ObjectOutputStream(b)){
+                o.writeObject(obj);
+            }
+            return b.toByteArray();
+        }
+    }
+
+    /**
+     *
+     * @param bytes The byte[] to attempt to deserialize into an Object
+     * @return  If successful, the deserialized Object
+     * @throws IOException (I've never had it raise this, so I don't know what would cause it)
+     * @throws ClassNotFoundException If the serialized data does not contain a Java class
+     */
+    public static Object deserialize(byte[] bytes) throws IOException, ClassNotFoundException {
+        try(ByteArrayInputStream b = new ByteArrayInputStream(bytes)){
+            try(ObjectInputStream o = new ObjectInputStream(b)){
+                return o.readObject();
+            }
+        }
+    }
+}
diff --git a/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToPDC.java b/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToPDC.java
new file mode 100644
index 0000000..46c2bec
--- /dev/null
+++ b/src/main/java/org/vindicterra/vindicterraLib/serialization/SerializeToPDC.java
@@ -0,0 +1,48 @@
+package org.vindicterra.vindicterraLib.serialization;
+
+import org.bukkit.NamespacedKey;
+import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.persistence.PersistentDataType;
+import org.jetbrains.annotations.Nullable;
+
+import java.io.IOException;
+
+/**
+ * Utility for serializing an Object into a Player's PDC
+ */
+public class SerializeToPDC {
+    /**
+     *
+     * @param pdc The PersistentDataContainer to serialize the Object to
+     * @param key The NamespacedKey to serialize the Object under
+     * @param obj The Object to serialize
+     * @throws RuntimeException if the serializer raises IOException - see serialization.SerializeToBytes
+     */
+    public static void serialize(PersistentDataContainer pdc, NamespacedKey key, Object obj) {
+        byte[] bytes;
+        try {
+            bytes = SerializeToBytes.serialize(obj);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        pdc.set(key, PersistentDataType.BYTE_ARRAY, bytes);
+    }
+
+    /**
+     *
+     * @param pdc The PersistentDataContainer to deserialize from
+     * @param key The NamespacedKey to deserialize from
+     * @throws RuntimeException if the serializer raises IOException - see serialization.SerializeToBytes
+     * @return `null` if the object was unable to be deserialized. Otherwise, the Object
+     */
+    public static @Nullable Object deserialize(PersistentDataContainer pdc, NamespacedKey key) {
+        byte[] bytes = pdc.get(key, PersistentDataType.BYTE_ARRAY);
+        try {
+            return SerializeToBytes.deserialize(bytes);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        } catch (ClassNotFoundException e) {
+            return null;
+        }
+    }
+}