feat(backend): login, most endpoints complete

backend/src/token.ts

@@ -0,0 +1,35 @@
+import crypto from 'node:crypto';
+
+/**
+ * Generate a token for e.g. login, etc
+ * @param length - The number of characters of the token
+ * @returns The generated token
+ */
+export const generateToken = ( length: number ): string => {
+    let token = '';
+
+    const min = 45;
+    const max = 122;
+
+    for ( let i = 0; i < length; i++ ) {
+        const buf = new Uint8Array( 1 );
+
+        crypto.getRandomValues( buf );
+        let randomNumber = Math.floor( ( buf[ 0 ] / 256 * ( max - min ) ) + min );
+
+        while (
+            ( 58 < randomNumber && randomNumber < 63 )
+            || ( 90 < randomNumber && randomNumber < 95 )
+            || ( 95 < randomNumber && randomNumber < 97 )
+        ) {
+            const buf = new Uint8Array( 1 );
+
+            crypto.getRandomValues( buf );
+            randomNumber = Math.floor( ( buf[ 0 ] / 256 * ( max - min ) ) + min );
+        }
+
+        token += String.fromCharCode( randomNumber );
+    }
+
+    return token;
+};