From 24c24030328c870adb3bea4ac9b804018a0114ff Mon Sep 17 00:00:00 2001
From: Bhavya Jain <rishikabhavya@gmail.com>
Date: Thu, 11 Sep 2025 21:56:51 +0530
Subject: [PATCH] Add CLI export command for GLB/JSON using
 circuit-json-to-gltf

---
 cli/main.ts | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/cli/main.ts b/cli/main.ts
index b2f81800e..b4bb445ea 100644
--- a/cli/main.ts
+++ b/cli/main.ts
@@ -5,6 +5,8 @@ import * as chokidar from "chokidar"
 import * as fs from "fs"
 import { createServer } from "../lib/server/createServer"
 import { getLocalFileDependencies } from "../lib/dependency-analysis/getLocalFileDependencies"
+// Add GLB export support
+import { convertCircuitJsonToGltf } from "circuit-json-to-gltf"
 
 const program = new Command()
 
@@ -93,4 +95,44 @@ circuit.add(<MyCircuit />)
     console.log(`Watching ${file} and its dependencies...`)
   })
 
+
+program
+  .command("export")
+  .description("Export snippet to a file")
+  .argument("<file>", "Path to the snippet file")
+  .option("-f, --format <format>", "Export format (json|glb)", "json")
+  .option("-o, --output <output>", "Output file path")
+  .action(async (file: string, options: { format: string, output?: string }) => {
+    const absolutePath = path.resolve(file);
+    const format = options.format;
+    const outputPath = options.output || (format === "glb" ? "snippet.glb" : "snippet.json");
+
+    // Load the snippet data (assumes default export)
+    let snippetData;
+    try {
+      snippetData = (await import(absolutePath)).default;
+    } catch (err) {
+      console.error("Failed to load snippet:", err);
+      process.exit(1);
+    }
+
+    if (format === "glb") {
+      const glbBuffer = await convertCircuitJsonToGltf(snippetData, { format: "glb" });
+      if (glbBuffer instanceof ArrayBuffer) {
+        await fs.promises.writeFile(outputPath, Buffer.from(new Uint8Array(glbBuffer)));
+      } else if (Buffer.isBuffer(glbBuffer)) {
+        await fs.promises.writeFile(outputPath, glbBuffer);
+      } else if (glbBuffer instanceof Uint8Array) {
+        await fs.promises.writeFile(outputPath, Buffer.from(glbBuffer));
+      } else {
+        throw new Error("Unsupported GLB buffer type returned by convertCircuitJsonToGltf");
+      }
+      console.log(`Exported GLB to ${outputPath}`);
+    } else {
+      const gltf = await convertCircuitJsonToGltf(snippetData, { format: "gltf" });
+      await fs.promises.writeFile(outputPath, JSON.stringify(gltf, null, 2));
+      console.log(`Exported JSON to ${outputPath}`);
+    }
+  });
+
 program.parse()