init

packages/server/src/auth/auth.ts

@@ -0,0 +1,50 @@
+import { nanoid } from 'nanoid';
+import { resolve } from 'path';
+import { existsSync } from 'fs';
+import { mkdir, readFile, writeFile } from 'fs/promises';
+import jwt from 'jsonwebtoken';
+import { Config } from '../config/config.js';
+
+type AuthOptions = {
+  config: Config;
+};
+
+class Auth {
+  #options: AuthOptions;
+  #data: Promise<{ secret: string }>;
+
+  constructor(options: AuthOptions) {
+    this.#options = options;
+    this.#data = this.#setup();
+  }
+
+  #setup = async () => {
+    const { config } = this.#options;
+    const secretLocation = resolve(config.files.location, 'secret');
+    let secret = '';
+    if (!existsSync(secretLocation)) {
+      await mkdir(config.files.location, { recursive: true });
+      secret = nanoid();
+      await writeFile(secretLocation, secret);
+    } else {
+      secret = await readFile(secretLocation, 'utf-8');
+    }
+    return {
+      secret,
+    };
+  };
+
+  public createToken = async (data: object) => {
+    const { secret } = await this.#data;
+    const token = jwt.sign(data, secret);
+    return token;
+  };
+
+  public validateToken = async (token: string) => {
+    const { secret } = await this.#data;
+    const result = jwt.verify(token, secret);
+    return result as object;
+  };
+}
+
+export { Auth };