// Service Worker Syntax で書いてます
// addEventListener('fetch', event => {
//   event.respondWith(handleRequest(event.request));
// });

// Module Worker Syntax で書いてます
// async function handleRequest(request) {
//   return new Response('Hello worker!', {
//     headers: { 'content-type': 'text/plain' },
//   });
// }

// ここからは R2 への画像アップロード
interface Env {
  CODEHEX_BUCKET: R2Bucket
}

export default {
  async fetch(request: Request, env: Env) {
    const url = new URL(request.url)
    const path = url.pathname
    if (path === "/upload") {
      const formdata = await request.formData()
      const imagedata = formdata.get("imagedata") 
      if (imagedata === null) {
        throw new Error("not found imagedata")
      }
      const file = imagedata as File
      const obj = await env.CODEHEX_BUCKET.put("image", file, {
        httpMetadata: {
          contentType: "image/png"
        }
      })  
      
      return new Response(`key: ${obj.key}!!`, {
        headers: { 'content-type': 'text/plain' },
      })
    }


    if (path === "/image") {
      const obj = await env.CODEHEX_BUCKET.get("image")  
      if (obj === null) {
        throw new Error("upload してー")
      }
      return new Response(obj.body)
    }

    
    return new Response('Not found', {
      status: 404,
      headers: { 'content-type': 'text/plain' },
    });
  }
}