Revert back to upload without manual redirect

Author: inukshuk

src/plugin.js

@@ -121,26 +121,44 @@ export default class ArtimiPlugin {
     let contentMd5 = Buffer.from(checksum, 'hex').toString('base64')
     let contentType = `image/${type}`
 
+    // Use PUT request with Expect 100-continue
     let res = await fetch(`${host}/uploads/${checksum}.${type}`, {
-      method: 'PUT',
-      redirect: 'follow',
-      body,
+      method: 'GET',
       headers: {
         'Authorization': `Bearer ${token}`,
-        'Content-MD5': contentMd5,
-        'Content-Type': contentType,
-        'Expect': '100-continue'
+        'X-Content-Length': body.length,
+        'X-Content-MD5': contentMd5,
+        'X-Content-Type': contentType
       }
     })
 
     switch (res.status) {
       case 204:
         logger.info('Image already cached...')
         return `${checksum}.${type}`
-      case 200:
-        assert(res.redirected, 'image upload was not redirected')
-        logger.info('uploaded image to cache')
+      case 202: {
+        let url = res.headers.get('location')
+        logger.debug({ url }, 'Uploading image to cache...')
+
+        res = await fetch(url, {
+          method: 'PUT',
+          body,
+          headers: {
+            'Content-MD5': contentMd5,
+            'Content-Type': contentType
+          }
+        })
+
+        if (!res.ok) {
+          throw new Error(
+            `Image upload failed: ${res.status} ${await res.text()}`, {
+              cause: res
+            })
+        }
+
+        logger.info('Image uploaded to cache')
         return `${checksum}.${type}`
+      }
       default:
         throw new Error(
           `Image upload failed with status "${res.status}": ${await res.text()}`