now typescript

src/jwt.ts

@@ -0,0 +1,106 @@
+import * as jwt from 'jsonwebtoken';
+
+export default class JwtAuth{
+    private JWTSecretKey: string;
+    private blacklist: string[];
+
+    public constructor(JWTSecretKey: string){
+        this.JWTSecretKey = JWTSecretKey;
+        this.blacklist = [];
+    }
+
+    generateJWT(payload: { [key: string]: any}, settings: jwt.SignOptions = {}, secretKey = this.JWTSecretKey): string {
+        return jwt.sign(payload, secretKey, settings);
+    }
+
+    verifyJWT(token: string, secretKey = this.JWTSecretKey) {
+        try{
+            if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+            const vertoken = jwt.verify(token, secretKey);
+            
+            if(vertoken instanceof Object) {
+                return vertoken;
+            } else {
+                return undefined;
+            }
+        } catch (error) {
+            return { valid: false, message: "Token is invalid." };
+        }
+    }
+
+    decodeJWT(token: string) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        return jwt.decode(token);
+    }
+
+    getJWTExpirationDate(token: string) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const decoded = this.decodeJWT(token) as { [key: string]: any };
+        return decoded.exp;
+    }
+
+    isJWTExpired(token: string) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const expirationDate = this.getJWTExpirationDate(token);
+        return expirationDate < Date.now();
+    }
+
+    refreshJWT(token: string, settings: jwt.SignOptions = {}, secretKey = this.JWTSecretKey) {
+        if(this.blacklist.includes(token)) return { valid: false, message: "Token is blacklisted." };
+        const decoded = this.verifyJWT(token, secretKey);
+
+        if(decoded instanceof Object) {
+            if(decoded.valid == false) return { valid: false, message: "Token is invalid." };
+
+            let payLoadArray: { [key: string]: any } = {};
+
+            if (decoded instanceof Object) {
+                payLoadArray = decoded as { [key: string]: any };
+            } else {
+                return { valid: false, message: "Token is invalid." };
+            }
+    
+            const newToken = this.generateJWT(payLoadArray, settings, secretKey);
+            return newToken;
+        }
+        return { valid: false, message: "Token is invalid." };
+    }
+
+    BlackListJWT(token: string) {
+        //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."};
+    }
+
+    ClearBlackList() {
+        //clear blacklist
+        this.blacklist = [];
+        return { valid: true, message: "Blacklist successfully cleared."};
+    }
+
+    GetBlackList() {
+        //return blacklist
+        return this.blacklist;
+    }
+
+    RemoveFromBlackList(token: string) {
+        //remove token from blacklist
+        if (this.blacklist.includes(token)) {
+            this.blacklist = this.blacklist.filter((item) => item !== token);
+            return { valid: true, message: "Token successfully removed from blacklist."};
+        }
+        return { valid: false, message: "Token is not blacklisted." };
+    }
+
+    IsBlackListed(token: string) {
+        //check if token is blacklisted
+        if (this.blacklist.includes(token)) {
+            return { valid: true, message: "Token is blacklisted." };
+        }
+        return { valid: false, message: "Token is not blacklisted." };
+    }
+}