feat(17-02): refactor image service and routes to use S3 storage service

- Replace Bun.write/mkdir with uploadImage() from storage.service
- Remove uploadsDir parameter from fetchImageFromUrl
- Update tests to mock storage service instead of checking filesystem

src/server/routes/images.ts

@@ -1,10 +1,9 @@
 import { randomUUID } from "node:crypto";
-import { mkdir } from "node:fs/promises";
-import { join } from "node:path";
 import { zValidator } from "@hono/zod-validator";
 import { Hono } from "hono";
 import { z } from "zod";
 import { fetchImageFromUrl } from "../services/image.service";
+import { uploadImage } from "../services/storage.service";
 
 const ALLOWED_TYPES = ["image/jpeg", "image/png", "image/webp"];
 const MAX_SIZE = 5 * 1024 * 1024; // 5MB
@@ -56,12 +55,9 @@ app.post("/", async (c) => {
 		file.type.split("/")[1] === "jpeg" ? "jpg" : file.type.split("/")[1];
 	const filename = `${Date.now()}-${randomUUID()}.${ext}`;
 
-	// Ensure uploads directory exists
-	await mkdir("uploads", { recursive: true });
-
-	// Write file
+	// Upload to object storage
 	const buffer = await file.arrayBuffer();
-	await Bun.write(join("uploads", filename), buffer);
+	await uploadImage(Buffer.from(buffer), filename, file.type);
 
 	return c.json({ filename }, 201);
 });

src/server/services/image.service.ts

@@ -1,6 +1,5 @@
 import { randomUUID } from "node:crypto";
-import { mkdir } from "node:fs/promises";
-import { join } from "node:path";
+import { uploadImage } from "./storage.service";
 
 const ALLOWED_TYPES = ["image/jpeg", "image/png", "image/webp"];
 const MAX_SIZE = 5 * 1024 * 1024; // 5MB
@@ -13,7 +12,6 @@ interface FetchImageResult {
 
 export async function fetchImageFromUrl(
 	url: string,
-	uploadsDir = "uploads",
 ): Promise<FetchImageResult> {
 	// Validate URL format
 	let parsedUrl: URL;
@@ -74,9 +72,8 @@ export async function fetchImageFromUrl(
 	const ext = contentType === "image/jpeg" ? "jpg" : contentType.split("/")[1];
 	const filename = `${Date.now()}-${randomUUID()}.${ext}`;
 
-	// Ensure directory exists and write
-	await mkdir(uploadsDir, { recursive: true });
-	await Bun.write(join(uploadsDir, filename), buffer);
+	// Upload to object storage
+	await uploadImage(Buffer.from(buffer), filename, contentType);
 
 	return { filename, sourceUrl: url };
 }