Add redis

+ Add a public lib file for redis
  + Add an indexed auth client
  + Add a function to create promisified partial clients
+ Add password revisions to the auth redis index

src/Controllers/admin_auth.controller.ts

@@ -1,5 +1,6 @@
 import { Request, Response } from "express";
 import { Admin, AdminLevel, Group } from "@prisma/client";
+import { authClient } from "../lib/redis";
 import prisma from "../lib/prisma";
 import argon2 from "argon2";
 import jwt from "jsonwebtoken";
@@ -55,6 +56,9 @@ export const authenticateUser = async (req: Request<{}, {}, AuthenticateUserBody
   const param_password_hash = await argon2.hash(password, { type: argon2.argon2id });
 
   if (param_password_hash === user.password) {
+    // Set password revision ID in redis
+    await authClient.set(user.pid, user.revision);
+
     return {
       type: "success",
       payload: {

src/lib/redis.ts

@@ -0,0 +1,27 @@
+import redis from "redis";
+import { promisify } from "util";
+
+const REDIS_INDICES = {
+  auth: 0,
+};
+
+const REDIS_HOST = process.env.REDIS_HOST || "redis";
+const REDIS_PORT = process.env.REDIS_PORT ? parseInt(process.env.REDIS_PORT) : 6379;
+
+// TODO: Extend
+function createAsyncClient(client: redis.RedisClient) {
+  return {
+    get: promisify(client.get).bind(client),
+    set: promisify(client.set).bind(client),
+  };
+}
+
+// ----------------- //
+// Redis auth client //
+// ----------------- //
+
+const auth = redis.createClient({ host: REDIS_HOST, port: REDIS_PORT });
+
+auth.select(REDIS_INDICES.auth);
+
+export const authClient = createAsyncClient(auth);