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/*
Fosscord: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Fosscord and Fosscord Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { Storage } from "./Storage";
import fs from "fs";
import { join, 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), { recursive: true });
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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