Completed OTPStore abstract class with implementation of RedisStore

otp_store/otp_store.ts

@@ -0,0 +1,7 @@
+abstract class OTPStore {
+    abstract get(key: string): Promise<number>;
+    abstract set(key: string, value: number, ttl?: number): Promise<string | null>;
+    abstract del(key: string): Promise<number | null>;
+}
+
+export default OTPStore;

otp_store/redis_store.ts

@@ -0,0 +1,28 @@
+import OTPStore from './otp_store'
+import { RedisClientType, RedisFunctions, RedisModules, RedisScripts } from '@redis/client';
+
+type RedisClient = RedisClientType<RedisFunctions, RedisModules, RedisScripts>
+
+class RedisStore extends OTPStore {
+    private client: RedisClient;
+
+    constructor(client: RedisClient) {
+        super()
+        this.client = client
+    }
+
+    async get(key: string): Promise<number> {
+        const value = await this.client.get(key)
+        return value ? parseInt(value) : 0
+    }
+
+    async set(key: string, value: number, ttl = 60): Promise<string | null> {
+        return await this.client.set(key, value.toString(), { EX: ttl })
+    }
+
+    async del(key: string): Promise<number | null> {
+        return await this.client.del(key)
+    }
+}
+
+export default RedisStore

package.json

@@ -34,5 +34,9 @@
     "@types/node": "^20.14.12",
     "tsup": "^8.2.3",
     "typescript": "^5.5.4"
+  },
+  "dependencies": {
+    "@redis/client": "^1.5.17",
+    "redis": "^4.6.15"
   }
 }