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import * as fs from "fs";
import * as os from "os";
import * as path from "path";
import { Readable } from "stream";
import { pipeline } from "stream/promises";
import { assets, AssetTypes } from "@karakeep/db/schema";
import {
newAssetId,
saveAssetFromFile,
SUPPORTED_UPLOAD_ASSET_TYPES,
} from "@karakeep/shared/assetdb";
import serverConfig from "@karakeep/shared/config";
import { AuthedContext } from "@karakeep/trpc";
const MAX_UPLOAD_SIZE_BYTES = serverConfig.maxAssetSizeMb * 1024 * 1024;
// Helper to convert Web Stream to Node Stream (requires Node >= 16.5 / 14.18)
export function webStreamToNode(
webStream: ReadableStream<Uint8Array>,
): Readable {
// eslint-disable-next-line @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-explicit-any
return Readable.fromWeb(webStream as any); // Type assertion might be needed
}
export function toWebReadableStream(
nodeStream: NodeJS.ReadableStream,
): ReadableStream<Uint8Array> {
const reader = nodeStream as unknown as Readable;
return new ReadableStream({
start(controller) {
reader.on("data", (chunk) => controller.enqueue(new Uint8Array(chunk)));
reader.on("end", () => controller.close());
reader.on("error", (err) => controller.error(err));
},
});
}
export async function uploadAsset(
user: AuthedContext["user"],
db: AuthedContext["db"],
formData: { file: File } | { image: File },
): Promise<
| { error: string; status: 400 | 413 }
| {
assetId: string;
contentType: string;
fileName: string;
size: number;
}
> {
let data: File;
if ("file" in formData) {
data = formData.file;
} else {
data = formData.image;
}
const contentType = data.type;
const fileName = data.name;
if (!SUPPORTED_UPLOAD_ASSET_TYPES.has(contentType)) {
return { error: "Unsupported asset type", status: 400 };
}
if (data.size > MAX_UPLOAD_SIZE_BYTES) {
return { error: "Asset is too big", status: 413 };
}
let tempFilePath: string | undefined;
try {
tempFilePath = path.join(os.tmpdir(), `karakeep-upload-${Date.now()}`);
await pipeline(
webStreamToNode(data.stream()),
fs.createWriteStream(tempFilePath),
);
const [assetDb] = await db
.insert(assets)
.values({
id: newAssetId(),
// Initially, uploads are uploaded for unknown purpose
// And without an attached bookmark.
assetType: AssetTypes.UNKNOWN,
bookmarkId: null,
userId: user.id,
contentType,
size: data.size,
fileName,
})
.returning();
await saveAssetFromFile({
userId: user.id,
assetId: assetDb.id,
assetPath: tempFilePath,
metadata: { contentType, fileName },
});
return {
assetId: assetDb.id,
contentType,
size: data.size,
fileName,
};
} finally {
if (tempFilePath) {
await fs.promises.unlink(tempFilePath).catch(() => ({}));
}
}
}
|
