chore: expose simple route to debug (#2546)

I was thinking to try something along these lines

packages/api/src/index.js

@@ -35,6 +35,7 @@ import {
 } from './middleware/maintenance.js'
 import { getContext } from './utils/context.js'
 import { withAuth } from './middleware/auth.js'
+import { repl } from './repl.js'
 
 const r = new Router(getContext, {
   onError(req, err, ctx) {
@@ -47,6 +48,10 @@ const checkHasDeleteRestriction = true
 const checkHasPsaAccess = true
 const checkUcan = true
 
+// Debugging
+
+r.add('get', '/repl', repl)
+
 // Monitoring
 r.add('get', '/metrics', withMode(metrics, RO))
 r.add('get', '/stats', withMode(getStats, RO), [postCors])

packages/api/src/repl.js

@@ -0,0 +1,27 @@
+import { JSONResponse } from './utils/json-response.js'
+import { HTTPError } from './errors.js'
+
+/** @type {import('./bindings').Handler} */
+export const repl = async (event, ctx) => {
+  const { w3up } = ctx
+
+  if (w3up) {
+    const blob = await event.request.blob()
+    if (blob.size === 0) {
+      throw new HTTPError('empty payload', 400)
+    }
+
+    const result = await w3up.uploadCAR(blob, {
+      onShardStored: ({ cid }) => {
+        console.log(`SHARD ${cid}`)
+      },
+      // @ts-expect-error TODO adjust upstream type
+      pieceHasher: null,
+    })
+    console.log('UPLOADED CAR')
+
+    return new JSONResponse({ ok: true, value: result })
+  } else {
+    throw new HTTPError(`No w3up client`, 500)
+  }
+}