Add node signed uploads demo

examples/node-image-upload/upload-signed.js

@@ -0,0 +1,65 @@
+require('dotenv').config()
+const cloudinary = require('cloudinary').v2;
+
+const fs = require("node:fs")
+const path = require("node:path")
+
+cloudinary.config({
+    cloud_name: process.env.CLOUDINARY_CLOUD_NAME,
+    api_key: process.env.CLOUDINARY_API_KEY,
+    api_secret: process.env.CLOUDINARY_API_SECRET,
+})
+
+const imagePath = path.resolve(__dirname, "./images/stellan-johansson-1PP0Fc-KSd4-unsplash.jpg")
+
+// PART ONE | Generate a signature
+
+const timestamp = Math.round(new Date().getTime() / 1000)
+
+const signature = cloudinary.utils.api_sign_request(
+    {
+        folder: "example",
+        public_id: "satellite-rest-signed",
+        unique_filename: false,
+        timestamp,
+    },
+    process.env.CLOUDINARY_API_SECRET,
+)
+
+console.log(signature)
+
+// PART TWO | Upload an image using the REST API
+
+const fileBuffer = fs.readFileSync(imagePath)
+const base64File = fileBuffer.toString("base64")
+const dataUri = `data:image/jpeg;base64,${base64File}`
+
+const url = `https://api.cloudinary.com/v1_1/${process.env.CLOUDINARY_CLOUD_NAME}/image/upload`
+
+const formData = new FormData()
+
+formData.append("file", dataUri)
+formData.append("folder", "example")
+formData.append("public_id", "satellite-rest-signed")
+formData.append("unique_filename", "false")
+formData.append("timestamp", timestamp.toString())
+formData.append("api_key", process.env.CLOUDINARY_API_KEY)
+formData.append("signature", signature)
+
+const response = await fetch(url, {
+    method: "POST",
+    body: formData,
+})
+
+const signedRestImage = await response.json()
+console.log(signedRestImage.url)
+
+// PART THREE | Cloudinary SDK handles signing for you
+
+const signedSdkImage = await cloudinary.uploader.upload(imagePath, {
+    folder: "example",
+    public_id: "satellite-sdk-signed",
+    unique_filename: false,
+})
+
+console.log(signedSdkImage.url)