feat: initial impl of file proxy

apps/file-proxy/files.ts

@@ -1,12 +1,39 @@
-import { Hono } from "hono"
+import { api } from "@fileone/convex/api"
+import { newRouter } from "./router"
 
-const h = new Hono().basePath("/files")
+const r = newRouter().basePath("/files")
 
-h.get("/:fileId", async (c) => {
-	const fileId = c.req.param("fileId")
-	if (!fileId) {
-		return c.json({ error: "File ID is required" }, 400)
+r.get(":shareToken", async (c) => {
+	const shareToken = c.req.param("shareToken")
+	if (!shareToken) {
+		return c.json({ error: "not found" }, 404)
 	}
+
+	const fileShare = await c.var.convex.query(api.fileshare.findFileShare, {
+		apiKey: c.var.apiKey,
+		shareToken,
+	})
+	if (!fileShare) {
+		return c.json({ error: "not found" }, 404)
+	}
+
+	const fileUrl = await c.var.convex.query(api.filesystem.getStorageUrl, {
+		apiKey: c.var.apiKey,
+		storageId: fileShare.storageId,
+	})
+	if (!fileUrl) {
+		return c.json({ error: "not found" }, 404)
+	}
+
+	const fileResponse = await fetch(fileUrl)
+	if (!fileResponse.ok) {
+		return c.json({ error: "not found" }, 404)
+	}
+
+	return new Response(fileResponse.body, {
+		status: fileResponse.status,
+		headers: fileResponse.headers,
+	})
 })
 
-export { h as files }
+export { r as files }