feat(media): add prepare script

packages/engine-media/package.json

@@ -14,12 +14,15 @@
     "lib"
   ],
   "scripts": {
-    "build": "node -r esbuild-register ../../scripts/runOnChanged.cts ./src concurrently -n cjs,dts yarn:build:cjs yarn:build:dts",
+    "prepare": "node -r esbuild-register scripts/prepare.cts",
+    "build": "yarn prepare && node -r esbuild-register ../../scripts/runOnChanged.cts ./src concurrently -n cjs,dts yarn:build:cjs yarn:build:dts",
     "build:cjs": "node -r esbuild-register ../../scripts/build.cts",
     "build:dts": "tsc -p tsconfig.json"
   },
   "devDependencies": {
     "@chronocat/shell": "workspace:packages/shell",
+    "@types/adm-zip": "^0.5.0",
+    "adm-zip": "^0.5.10",
     "concurrently": "^8.2.1",
     "esbuild-register": "^3.5.0",
     "ts-toolbelt": "^9.6.0",

packages/engine-media/scripts/prepare.cts

@@ -0,0 +1,40 @@
+import AdmZip from 'adm-zip'
+import { access, mkdir } from 'node:fs/promises'
+import { join, resolve } from 'node:path'
+
+const filenames = ['ntsilk-win32-x64.exe', 'ntsilk-linux-x64']
+const dstDir = resolve(__dirname, '../../../build/caches')
+const dstPath = join(dstDir, 'ntsilk.zip')
+
+export async function exists(path: string): Promise<boolean> {
+  try {
+    await access(path)
+  } catch (_) {
+    return false
+  }
+  return true
+}
+
+void (async () => {
+  await mkdir(dstDir, {
+    recursive: true,
+  })
+
+  if (await exists(dstPath)) return
+
+  const zip = new AdmZip()
+
+  await Promise.all(
+    filenames.map((name) =>
+      fetch(
+        `https://raw.githubusercontent.com/ntsilk-userland/binaries/master/${name}`,
+      )
+        .then((response) => response.arrayBuffer())
+        .then((data) => {
+          zip.addFile(name, Buffer.from(data))
+        }),
+    ),
+  )
+
+  await zip.writeZipPromise(dstPath)
+})()