Publishing carousels

# 1. Create an upload for slide 1
SIZE=$(wc -c < slide-1.jpg | tr -d ' ')
UPLOAD=$(curl -s -X POST "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi/v2/uploads" \
  -H "Authorization: Bearer $HUMANPOST_API_KEY" -H "Content-Type: application/json" \
  -d "{\"kind\":\"image\",\"filename\":\"slide-1.jpg\",\"contentType\":\"image/jpeg\",\"sizeBytes\":$SIZE}")
UPLOAD_ID_1=$(printf '%s' "$UPLOAD" | jq -r '.uploadId')
UPLOAD_URL=$(printf '%s' "$UPLOAD" | jq -r '.uploadUrl')

# 2. PUT the raw file, then mark the upload complete
curl -s -X PUT "$UPLOAD_URL" -H "Content-Type: image/jpeg" --upload-file slide-1.jpg
curl -s -X POST "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi/v2/uploads/$UPLOAD_ID_1/complete" \
  -H "Authorization: Bearer $HUMANPOST_API_KEY"

# 3. Repeat for slide 2
SIZE=$(wc -c < slide-2.jpg | tr -d ' ')
UPLOAD=$(curl -s -X POST "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi/v2/uploads" \
  -H "Authorization: Bearer $HUMANPOST_API_KEY" -H "Content-Type: application/json" \
  -d "{\"kind\":\"image\",\"filename\":\"slide-2.jpg\",\"contentType\":\"image/jpeg\",\"sizeBytes\":$SIZE}")
UPLOAD_ID_2=$(printf '%s' "$UPLOAD" | jq -r '.uploadId')
UPLOAD_URL=$(printf '%s' "$UPLOAD" | jq -r '.uploadUrl')
curl -s -X PUT "$UPLOAD_URL" -H "Content-Type: image/jpeg" --upload-file slide-2.jpg
curl -s -X POST "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi/v2/uploads/$UPLOAD_ID_2/complete" \
  -H "Authorization: Bearer $HUMANPOST_API_KEY"

# 4. Create one post; media array order is slide order
curl -s -X POST "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi/v2/posts" \
  -H "Authorization: Bearer $HUMANPOST_API_KEY" -H "Content-Type: application/json" \
  -H "Idempotency-Key: two-slide-launch" \
  -d "{\"media\":[\"$UPLOAD_ID_1\",\"$UPLOAD_ID_2\"],\"accountIds\":[\"ACCOUNT_ID\"],\"caption\":\"Two ideas worth saving\"}"

// Node.js 20+; install the CLI first: npm install -g ./cli
// Set HUMANPOST_API_KEY through your shell or secrets manager.
import fs from "node:fs/promises";
import path from "node:path";
import { execFileSync } from "node:child_process";
const env = { ...process.env, HUMANPOST_API_BASE: "https://us-central1-clickbaitcarousel.cloudfunctions.net/publishingApi" };
if (!env.HUMANPOST_API_KEY) throw new Error("Set HUMANPOST_API_KEY first");
const root = "./carousels";
const folders = (await fs.readdir(root, { withFileTypes: true }))
  .filter(entry => entry.isDirectory()).map(entry => entry.name).sort();
function cli(args) {
  return JSON.parse(execFileSync("humanpost", [...args, "--json"],
    { env, encoding: "utf8", stdio: ["ignore", "pipe", "inherit"] }));
}
for (const folder of folders) {
  const dir = path.join(root, folder);
  const files = (await fs.readdir(dir)).filter(file => /\.(jpe?g|png|webp|heic)$/i.test(file)).sort();
  if (files.length < 2 || files.length > 20) throw new Error(folder + " needs 2–20 images");
  const manifest = path.join(dir, ".upload-manifest.json");
  const state = path.join(dir, ".upload-progress.json");
  await fs.writeFile(manifest, JSON.stringify(files.map(file => path.join(dir, file))));
  // Replays reuse ready upload IDs; changed files/order are rejected by the state check.
  const uploads = cli(["uploads", "local-batch", "--file", manifest, "--state", state]);
  const post = cli(["posts", "create", "--idempotency-key", "carousel-" + folder,
    "--data", JSON.stringify({ media: uploads.results.map(item => item.uploadId),
      accountIds: ["ACCOUNT_ID"], caption: folder })]);
  console.log(folder + ": " + post.postId);
}