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import * as fs from "fs";
import * as path from "path";
import { z } from "zod";
import serverConfig from "./config";
const ROOT_PATH = path.join(serverConfig.dataDir, "assets");
function getAssetDir(userId: string, assetId: string) {
return path.join(ROOT_PATH, userId, assetId);
}
export const zAssetMetadataSchema = z.object({
contentType: z.string(),
});
export async function saveAsset({
userId,
assetId,
asset,
metadata,
}: {
userId: string;
assetId: string;
asset: Buffer,
metadata: z.infer<typeof zAssetMetadataSchema>;
}) {
const assetDir = getAssetDir(userId, assetId);
await fs.promises.mkdir(assetDir, { recursive: true });
await Promise.all([
fs.promises.writeFile(path.join(assetDir, "asset.bin"), asset),
fs.promises.writeFile(path.join(assetDir, "metadata.json"), JSON.stringify(metadata)),
]);
}
export async function readAsset({
userId,
assetId,
}: {
userId: string;
assetId: string;
}) {
const assetDir = getAssetDir(userId, assetId);
const [asset, metadataStr] = await Promise.all([
fs.promises.readFile(path.join(assetDir, "asset.bin")),
fs.promises.readFile(path.join(assetDir, "metadata.json"), {encoding: "utf8"}),
]);
const metadata = zAssetMetadataSchema.parse(JSON.parse(metadataStr));
return {asset, metadata};
}
export async function deleteAsset({
userId,
assetId,
}: {
userId: string;
assetId: string;
}) {
const assetDir = getAssetDir(userId, assetId);
await fs.promises.rm(path.join(assetDir), {recursive: true});
}
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