Save any images to Cloudflare Images with Cloudflare Worker

index.js

/**
 * Welcome to Cloudflare Workers! This is your first worker.
 *
 * - Run `wrangler dev src/index.ts` in your terminal to start a development server
 * - Open a browser tab at http://localhost:8787/ to see your worker in action
 * - Run `wrangler publish src/index.ts --name my-worker` to publish your worker
 *
 * Learn more at https://developers.cloudflare.com/workers/
 */

export interface Env {
  // Example binding to KV. Learn more at https://developers.cloudflare.com/workers/runtime-apis/kv/
  // MY_KV_NAMESPACE: KVNamespace;
  //
  // Example binding to Durable Object. Learn more at https://developers.cloudflare.com/workers/runtime-apis/durable-objects/
  // MY_DURABLE_OBJECT: DurableObjectNamespace;
  //
  // Example binding to R2. Learn more at https://developers.cloudflare.com/workers/runtime-apis/r2/
  // MY_BUCKET: R2Bucket;
}

export default {
  /**
   * Upload to R2
   */
  // async fetch(
  //   request: Request,
  //   env: Env,
  //   ctx: ExecutionContext
  // ): Promise<Response> {
  //   const url = new URL(request.url);
  //   const key = url.pathname.slice(1);
  //   const img_url = `https://dvc-staging-public-misc.s3.amazonaws.com/${key}`;
  //   try {
  //     const response = await fetch(img_url);
  //     await env.MY_BUCKET.put(key, response.body);
  //     return new Response(`Put ${key} successfully!`);
  //   } catch (err) {
  //     return new Response("Fetch error", {
  //       status: 500,
  //     });
  //   }
  // },

  async fetch(
    request: Request,
    env: Env,
    ctx: ExecutionContext
  ): Promise<Response> {
    const url = new URL(request.url);
    const key = url.pathname.slice(1);
    const formData = new FormData();
    formData.append("url", `https://${key}`);
    formData.append("id", key);

    return await fetch(
      `https://api.cloudflare.com/client/v4/accounts/${env.ACCOUNT_ID}/images/v1`,
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${env.API_TOKEN}`,
        },
        body: formData,
      }
    );
  },
};