From 2245b1175ec1fb779c1d60a0f7a7fe50ef033cf6 Mon Sep 17 00:00:00 2001
From: Ruslan Shestopalyuk <rshest@meta.com>
Date: Sun, 28 Jul 2024 03:54:51 -0700
Subject: [PATCH] Migrate MultiplicationAnimatedNode to Kotlin (#45756)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/45756

# Changelog:
[Internal] -
As in the title.

Differential Revision: D60340884
---
 .../animated/MultiplicationAnimatedNode.java  | 56 -------------------
 .../animated/MultiplicationAnimatedNode.kt    | 50 +++++++++++++++++
 2 files changed, 50 insertions(+), 56 deletions(-)
 delete mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
 create mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.kt

diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
deleted file mode 100644
index 06296ea7eb5f49..00000000000000
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.java
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.animated;
-
-import com.facebook.react.bridge.JSApplicationCausedNativeException;
-import com.facebook.react.bridge.ReadableArray;
-import com.facebook.react.bridge.ReadableMap;
-
-/**
- * Animated node which takes two or more value node as an input and outputs a product of their
- * values
- */
-/*package*/ class MultiplicationAnimatedNode extends ValueAnimatedNode {
-
-  private final NativeAnimatedNodesManager mNativeAnimatedNodesManager;
-  private final int[] mInputNodes;
-
-  public MultiplicationAnimatedNode(
-      ReadableMap config, NativeAnimatedNodesManager nativeAnimatedNodesManager) {
-    mNativeAnimatedNodesManager = nativeAnimatedNodesManager;
-    ReadableArray inputNodes = config.getArray("input");
-    mInputNodes = new int[inputNodes.size()];
-    for (int i = 0; i < mInputNodes.length; i++) {
-      mInputNodes[i] = inputNodes.getInt(i);
-    }
-  }
-
-  @Override
-  public void update() {
-    nodeValue = 1;
-    for (int i = 0; i < mInputNodes.length; i++) {
-      AnimatedNode animatedNode = mNativeAnimatedNodesManager.getNodeById(mInputNodes[i]);
-      if (animatedNode != null && animatedNode instanceof ValueAnimatedNode) {
-        nodeValue *= ((ValueAnimatedNode) animatedNode).getValue();
-      } else {
-        throw new JSApplicationCausedNativeException(
-            "Illegal node ID set as an input for Animated.multiply node");
-      }
-    }
-  }
-
-  @Override
-  public String prettyPrint() {
-    return "MultiplicationAnimatedNode["
-        + tag
-        + "]: input nodes: "
-        + (mInputNodes != null ? mInputNodes.toString() : "null")
-        + " - super: "
-        + super.prettyPrint();
-  }
-}
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.kt
new file mode 100644
index 00000000000000..53eabeb0f59264
--- /dev/null
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/MultiplicationAnimatedNode.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.animated
+
+import com.facebook.react.bridge.JSApplicationCausedNativeException
+import com.facebook.react.bridge.ReadableMap
+
+/**
+ * Animated node which takes two or more value node as an input and outputs a product of their
+ * values
+ */
+internal class MultiplicationAnimatedNode(
+    config: ReadableMap,
+    private val nativeAnimatedNodesManager: NativeAnimatedNodesManager
+) : ValueAnimatedNode() {
+  private var inputNodes: IntArray
+
+  init {
+    val input = config.getArray("input")
+    val size = input?.size() ?: 0
+    inputNodes = IntArray(size)
+    if (input != null) {
+      for (i in inputNodes.indices) {
+        inputNodes[i] = input.getInt(i)
+      }
+    }
+  }
+
+  override fun update() {
+    nodeValue = 1.0
+    for (i in inputNodes.indices) {
+      val animatedNode = nativeAnimatedNodesManager.getNodeById(inputNodes[i])
+      nodeValue *=
+          if (animatedNode != null && animatedNode is ValueAnimatedNode) {
+            animatedNode.getValue()
+          } else {
+            throw JSApplicationCausedNativeException(
+                "Illegal node ID set as an input for Animated.multiply node")
+          }
+    }
+  }
+
+  override fun prettyPrint(): String =
+      "MultiplicationAnimatedNode[$tag]: input nodes: $inputNodes - super: ${super.prettyPrint()}"
+}