Finished guestbook and gallery. started diary

backend/services/BaseService.js

@@ -51,6 +51,18 @@ class BaseService {
         const ageDate = new Date(ageDifMs);
         return Math.abs(ageDate.getUTCFullYear() - 1970);
     }
+
+
+    async isUserAdult(userId) {
+        const birthdateParam = await this.getUserParams(userId, ['birthdate']);
+        if (!birthdateParam || birthdateParam.length === 0) {
+            return false;
+        }
+        const birthdate = birthdateParam[0].value; 
+        const age = this.calculateAge(birthdate);
+        return age >= 18;
+    }
+
 }
 
 export default BaseService;