first commit

jwt.js

@@ -0,0 +1,53 @@
+const jwt = require('jsonwebtoken');
+
+class JwtAuth{
+    constructor(JWTSecretKey){
+        this.JWTSecretKey = JWTSecretKey;
+        this.blacklist = [];
+    }
+
+    async generateJWT(payload, settings, secretKey = this.JWTSecretKey) {
+        return jwt.sign(payload, secretKey, settings);
+    }
+
+    async verifyJWT(token, secretKey = this.JWTSecretKey) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        return jwt.verify(token, secretKey);
+    }
+
+    async decodeJWT(token) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        return jwt.decode(token);
+    }
+
+    async getJWTExpirationDate(token) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const decoded = await this.decodeJWT(token);
+        return decoded.exp;
+    }
+
+    async isJWTExpired(token) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const expirationDate = await this.getJWTExpirationDate(token);
+        return expirationDate < Date.now();
+    }
+
+    async refreshJWT(token, settings, secretKey = this.JWTSecretKey) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const decoded = await this.verifyJWT(token, secretKey);
+        const newToken = await this.generateJWT(decoded, settings, secretKey);
+        return newToken;
+    }
+
+    async BlackListJWT(token) {
+        //check if token is already blacklisted
+        if (this.blacklist.includes(token)) {
+            return { valid: false, message: "Token is already blacklisted." };
+        }
+        //add token to blacklist
+        this.blacklist.push(token);
+        return { valid: true, message: "Token successfully blacklisted."};
+    }
+}
+
+module.exports = JwtAuth;