WIP: Start on signature generation

packages/uploads/src/__tests__/generateSignature.test.ts

@@ -0,0 +1,14 @@
+import { beforeAll, describe, test } from 'vitest'
+
+import { generateSignature } from '../lib/generateSignature.js'
+
+describe('Generate signature', () => {
+  beforeAll(() => {
+    process.env.RW_UPLOADS_SECRET = 'bazinga'
+  })
+
+  test('It creates a signature', () => {
+    const out = generateSignature('/tmp/myfile.txt', 500)
+    console.log(`👉 \n ~ out:`, out)
+  })
+})

packages/uploads/src/lib/generateSignature.ts

@@ -0,0 +1,16 @@
+import crypto from 'node:crypto'
+export const generateSignature = (filePath: string, expiresIn: number) => {
+  if (!process.env.RW_UPLOADS_SECRET) {
+    throw new Error(
+      'Please configure RW_UPLOADS_SECRET in your environment variables',
+    )
+  }
+
+  const expires = Math.floor(Date.now() / 1000) + expiresIn
+  const signature = crypto
+    .createHmac('sha256', process.env.RW_UPLOADS_SECRET)
+    .update(`${filePath}:${expires}`)
+    .digest('hex')
+
+  return signature
+}