OpenCode Desktop app (#5044)

Co-authored-by: Adam <2363879+adamdotdevin@users.noreply.github.com>

packages/tauri/scripts/utils.ts

@@ -0,0 +1,43 @@
+import { $ } from "bun"
+
+export const SIDECAR_BINARIES: Array<{ rustTarget: string; ocBinary: string; assetExt: string }> = [
+  {
+    rustTarget: "aarch64-apple-darwin",
+    ocBinary: "opencode-darwin-arm64",
+    assetExt: "zip",
+  },
+  {
+    rustTarget: "x86_64-apple-darwin",
+    ocBinary: "opencode-darwin-x64",
+    assetExt: "zip",
+  },
+  {
+    rustTarget: "x86_64-pc-windows-msvc",
+    ocBinary: "opencode-windows-x64",
+    assetExt: "zip",
+  },
+  {
+    rustTarget: "x86_64-unknown-linux-gnu",
+    ocBinary: "opencode-linux-x64",
+    assetExt: "tar.gz",
+  },
+]
+
+export const RUST_TARGET = Bun.env.RUST_TARGET
+
+export function getCurrentSidecar(target = RUST_TARGET) {
+  if (!target && !RUST_TARGET) throw new Error("RUST_TARGET not set")
+
+  const binaryConfig = SIDECAR_BINARIES.find((b) => b.rustTarget === target)
+  if (!binaryConfig) throw new Error(`Sidecar configuration not available for Rust target '${RUST_TARGET}'`)
+
+  return binaryConfig
+}
+
+export async function copyBinaryToSidecarFolder(source: string, target = RUST_TARGET) {
+  await $`mkdir -p src-tauri/sidecars`
+  const dest = `src-tauri/sidecars/opencode-${target}${process.platform === "win32" ? ".exe" : ""}`
+  await $`cp ${source} ${dest}`
+
+  console.log(`Copied ${source} to ${dest}`)
+}