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import { Storage } from "./Storage";
import fs from "fs";
import { join, relative, dirname } from "path";
import "missing-native-js-functions";
import { Readable } from "stream";
import ExifTransformer from "exif-be-gone";
// TODO: split stored files into separate folders named after cloned route
function getPath(path: string) {
// STORAGE_LOCATION has a default value in start.ts
const root = process.env.STORAGE_LOCATION || "../";
var filename = join(root, path);
if (path.indexOf("\0") !== -1 || !filename.startsWith(root))
throw new Error("invalid path");
return filename;
}
export class FileStorage implements Storage {
async get(path: string): Promise<Buffer | null> {
path = getPath(path);
try {
return fs.readFileSync(path);
} catch (error) {
try {
const files = fs.readdirSync(path);
if (!files.length) return null;
return fs.readFileSync(join(path, files[0]));
} catch (error) {
return null;
}
}
}
async set(path: string, value: any) {
path = getPath(path);
if (!fs.existsSync(dirname(path))) fs.mkdirSync(dirname(path));
value = Readable.from(value);
const cleaned_file = fs.createWriteStream(path);
return value.pipe(new ExifTransformer()).pipe(cleaned_file);
}
async delete(path: string) {
//TODO we should delete the parent directory if empty
fs.unlinkSync(getPath(path));
}
}
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