chore: offload retrieval of environment variables from jwt.ts to env.ts

src/tools/jwt.ts

@@ -1,10 +1,8 @@
 // Heavily based on:
 // https://github.com/TomDoesTech/REST-API-Tutorial-Updated/blob/7b5f040e1acd94d267df585516b33ee7e3b75f70/src/utils/jwt.utils.ts
-import * as dotenv from 'dotenv';
-dotenv.config({ quiet: true });
-
 import jwt from 'jsonwebtoken';
 import { DEFAULT_TOKEN_LIFETIME } from '../schemas/authSchema';
+import * as env from './env';
 
 type JwtStatus = {
 	valid: boolean;
@@ -12,40 +10,6 @@ type JwtStatus = {
 	decoded: string | jwt.JwtPayload | null;
 };
 
-/**
- * Get the environmental string from .env.
- * Supports rewriting names to UPPER_SNAKE_CASE if isGlobal is set.
- *
- * @param      {string}              key              The key
- * @param      {boolean}             [isGlobal=true]  Indicates if global
- * @return     {(string|undefined)}  The environment string.
- */
-export function getEnvString(
-	key: string,
-	isGlobal: boolean = true
-): string | undefined {
-	let keyName: string = '';
-
-	if (isGlobal) {
-		// Global values are DECLARED_LIKE_THIS=...
-		for (let i: number = 0; i < key.length; i++) {
-			if (key[i].toLowerCase() === key[i]) {
-				// If is lowercase, skip.
-				keyName += key[i];
-			} else {
-				// If is uppercase, convert to snake case.
-				keyName += `_${key[i].toLowerCase()}`;
-			}
-		}
-		keyName = keyName.toUpperCase();
-	} else {
-		// Non-global keys are parsed as passed
-		keyName = key;
-	}
-
-	return process.env[keyName];
-}
-
 /**
  * Sign a JWT containing sub (number), role (number, 0/1), iat/exp (unix timestamp) claims.
  *
@@ -66,7 +30,7 @@ export function signJwt(
 	// 	'base64'
 	// ).toString('utf8');
 
-	const secret: string = getEnvString(keyName, true)!;
+	const secret: string = env.getString(keyName, true)!;
 
 	// Use the default expiration time of 24 hours.
 	if (options === undefined)
@@ -97,7 +61,7 @@ export function verifyJwt(
 	// 	'base64'
 	// ).toString('utf8');
 
-	const secret: string = getEnvString(keyName, true)!;
+	const secret: string = env.getString(keyName, true)!;
 
 	try {
 		const decoded: string | jwt.JwtPayload = jwt.verify(token, secret);