feat(Contract, enums): update contract_type to use ContractType enum for improved type safety

Author: Barata-Ribeiro

resources/js/types/application/contract.d.ts

@@ -1,4 +1,5 @@
 import { EmployeeInfo } from '@/types/application/employee';
+import { ContractType } from '@/types/application/enums';
 
 export interface Contract {
     id: number;
@@ -9,7 +10,7 @@ export interface Contract {
 
     rate_type: string;
     rate: string;
-    contract_type: string;
+    contract_type: ContractType;
 
     created_at: Date;
     updated_at: Date;

resources/js/types/application/enums.ts

@@ -26,3 +26,10 @@ export enum NoticeType {
     Warning = 'warning',
     Alert = 'alert',
 }
+
+export enum ContractType {
+    FullTime = 'full_time',
+    PartTime = 'part_time',
+    Contractor = 'contractor',
+    Intern = 'intern',
+}