embedder/app/types/db.ts
2022-12-13 17:41:31 +00:00

87 lines
No EOL
2.1 KiB
TypeScript

import sqlite3 from "sqlite3";
import mkdirp from "mkdirp";
import crypto from "crypto";
mkdirp.sync("./uploads");
mkdirp.sync("./var/db");
export const db = new sqlite3.Database("./var/db/media.db");
/**Inserts a new user to the database */
export function createUser(username: string, password: string) {
const salt = crypto.randomBytes(16);
db.run("INSERT OR IGNORE INTO users (username, hashed_password, salt) VALUES (?, ?, ?)", [
username,
crypto.pbkdf2Sync(password, salt, 310000, 32, "sha256"),
salt
]);
}
/**Selects a path for a file given ID */
export function getPath(id: number | string) {
return new Promise((resolve, reject) => {
const query = "SELECT path FROM media WHERE id = ?";
db.get(query, [id], (err: Error, path: object) => {
if (err) {reject(err);}
resolve(path);
});
});
}
/**Deletes from database given an ID */
export function deleteId(database: string, id: number | string) {
return new Promise((resolve, reject) => {
const query = `DELETE FROM ${database} WHERE id = ?`;
db.run(query, [id], (err: Error) => {
if (err) {reject(err); return;}
resolve(null);
});
});
}
/**Expires a database row given a Date in unix time */
export function expire(database: string, column: string, expiration:number) {
return new Promise((resolve, reject) => {
const query = `SELECT * FROM ${database} WHERE ${column} < ?`;
db.each(query, [expiration], async (err: Error, row: GenericRow) => {
if (err) reject(err);
await deleteId(database, row.id);
resolve(null);
});
});
}
/**A generic database row */
export interface GenericRow {
id? : number | string,
username?: string
expire? :Date
}
/**A row for the media database */
export interface MediaRow {
id? : number | string,
path: string,
expire: Date,
username?: string
}
/**Params type for doing work with media database */
export type MediaParams = [
path: string,
expire: Date,
username?: string
]
/**A row for the user database */
export interface UserRow {
id? : number,
username: string,
hashed_password: any,
salt: any
}