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gif avatar support

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all resizing is done server-side with sharp
This commit is contained in:
Oliver Bryan
2026-01-09 03:59:34 +00:00
parent e5777d9645
commit dc50df15cb
6 changed files with 85 additions and 63 deletions
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3
packages/backend/package.json
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@@ -32,6 +32,7 @@
"dotenv": "^17.2.3",
"drizzle-orm": "^0.45.0",
"jsonwebtoken": "^9.0.3",
"pg": "^8.16.3"
"pg": "^8.16.3",
"sharp": "^0.34.5"
}
}

32
packages/backend/src/routes/user/upload-avatar.ts
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@@ -1,10 +1,11 @@
import { randomUUID } from "node:crypto";
import type { BunRequest } from "bun";
import sharp from "sharp";
import { s3Client, s3Endpoint, s3PublicUrl } from "../../s3";
const MAX_FILE_SIZE = 5 * 1024 * 1024;
const ALLOWED_TYPES = ["image/png", "image/jpeg", "image/webp", "image/gif"];
const ALLOWED_EXTENSIONS = ["png", "jpg", "jpeg", "webp", "gif"];
const TARGET_SIZE = 256;
export default async function uploadAvatar(req: BunRequest) {
if (req.method !== "POST") {
@@ -28,19 +29,38 @@ export default async function uploadAvatar(req: BunRequest) {
});
}
const fileExtension = file.name.split(".").pop()?.toLowerCase();
if (!fileExtension || !ALLOWED_EXTENSIONS.includes(fileExtension)) {
return new Response("invalid file extension", { status: 400 });
const isGIF = file.type === "image/gif";
const outputExtension = isGIF ? "gif" : "png";
const outputMimeType = isGIF ? "image/gif" : "image/png";
let resizedBuffer: Buffer;
try {
const inputBuffer = Buffer.from(await file.arrayBuffer());
if (isGIF) {
resizedBuffer = await sharp(inputBuffer, { animated: true })
.resize(TARGET_SIZE, TARGET_SIZE, { fit: "cover" })
.gif()
.toBuffer();
} else {
resizedBuffer = await sharp(inputBuffer)
.resize(TARGET_SIZE, TARGET_SIZE, { fit: "cover" })
.png()
.toBuffer();
}
} catch (error) {
console.error("failed to resize image:", error);
return new Response("failed to process image", { status: 500 });
}
const uuid = randomUUID();
const key = `avatars/${uuid}.${fileExtension}`;
const key = `avatars/${uuid}.${outputExtension}`;
const publicUrlBase = s3PublicUrl || s3Endpoint;
const publicUrl = `${publicUrlBase}/${key}`;
try {
const s3File = s3Client.file(key);
await s3File.write(file, { type: file.type });
await s3File.write(resizedBuffer, { type: outputMimeType });
} catch (error) {
console.error("failed to upload to S3:", error);
return new Response("failed to upload image", { status: 500 });