From 60dd1499186f0af50047e0fe1cb676abe455cd8f Mon Sep 17 00:00:00 2001
From: Joel Wetzell <jwetzell@yahoo.com>
Date: Sat, 15 Mar 2025 12:23:40 -0500
Subject: [PATCH] add decoder for lighting output

---
 src/decoders/index.ts                    |  2 ++
 src/decoders/lighting/lighting-output.ts | 46 ++++++++++++++++++++++++
 src/decoders/lighting/universe.ts        |  2 +-
 src/models.ts                            | 10 ++++++
 4 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 src/decoders/lighting/lighting-output.ts

diff --git a/src/decoders/index.ts b/src/decoders/index.ts
index e8fcb4a..21f1406 100644
--- a/src/decoders/index.ts
+++ b/src/decoders/index.ts
@@ -1,4 +1,5 @@
 import ChannelBlock from './lighting/channel-block';
+import LightingOutput from './lighting/lighting-output';
 import Spot from './lighting/spot';
 import Universe from './lighting/universe';
 import CentroidAccelVelocity from './motion/centroid-accel-velocity';
@@ -28,4 +29,5 @@ export const Decoders = {
   Spot,
   ChannelBlock,
   Universe,
+  LightingOutput,
 };
diff --git a/src/decoders/lighting/lighting-output.ts b/src/decoders/lighting/lighting-output.ts
new file mode 100644
index 0000000..f0bd5c6
--- /dev/null
+++ b/src/decoders/lighting/lighting-output.ts
@@ -0,0 +1,46 @@
+import { Decoders } from '..';
+import { LightingOutput, Universe } from '../../models';
+
+export default (bytes: Uint8Array, isLittleEndian: boolean = false): LightingOutput => {
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
+
+  let dataOffset = 0;
+  const type = view.getUint8(dataOffset);
+  dataOffset += 1;
+  if (type !== 0x07) {
+    throw new Error('Lighting Output module must have a type of 0x09');
+  }
+
+  const size = view.getUint16(dataOffset, isLittleEndian);
+  dataOffset += 2;
+  if (size < bytes.byteLength) {
+    throw new Error('Lighting Output module size mismatch');
+  }
+  const sequence = view.getUint32(dataOffset, isLittleEndian);
+  dataOffset += 4;
+  const action = view.getUint8(dataOffset);
+  dataOffset += 1;
+  const holdTime = view.getUint32(dataOffset, isLittleEndian);
+  dataOffset += 4;
+  const numberOfUniverses = view.getUint16(dataOffset, isLittleEndian);
+  dataOffset += 2;
+
+  const universes: Universe[] = [];
+  let universeOffset = dataOffset;
+
+  for (let index = 0; index < numberOfUniverses; index++) {
+    const universeData = bytes.subarray(universeOffset);
+    const universe = Decoders.Universe(universeData);
+    universes.push(universe);
+    universeOffset += universe.size;
+  }
+  return {
+    type,
+    size,
+    sequence,
+    action,
+    holdTime,
+    numberOfUniverses,
+    universes,
+  };
+};
diff --git a/src/decoders/lighting/universe.ts b/src/decoders/lighting/universe.ts
index ec9cc7b..392dbe8 100644
--- a/src/decoders/lighting/universe.ts
+++ b/src/decoders/lighting/universe.ts
@@ -13,7 +13,7 @@ export default (bytes: Uint8Array, isLittleEndian: boolean = false): Universe =>
 
   const size = view.getUint16(dataOffset, isLittleEndian);
   dataOffset += 2;
-  if (size !== bytes.byteLength) {
+  if (size < bytes.byteLength) {
     throw new Error('Universe module size mismatch');
   }
   const id = view.getUint16(dataOffset, isLittleEndian);
diff --git a/src/models.ts b/src/models.ts
index dc55bde..949430b 100644
--- a/src/models.ts
+++ b/src/models.ts
@@ -115,6 +115,16 @@ export type ZoneObject = {
   name: string;
 };
 
+export type LightingOutput = {
+  type: number;
+  size: number;
+  sequence: number;
+  action: number;
+  holdTime: number;
+  numberOfUniverses: number;
+  universes: Universe[];
+};
+
 export type Universe = {
   type: number;
   size: number;