first commit

backend/src/utils/helpers.ts

@@ -0,0 +1,30 @@
+export function generateCustomerNumber(): string {
+  const timestamp = Date.now().toString(36).toUpperCase();
+  const random = Math.random().toString(36).substring(2, 6).toUpperCase();
+  return `K${timestamp}${random}`;
+}
+
+export function generateContractNumber(type: string): string {
+  const prefix = type.substring(0, 3).toUpperCase();
+  const timestamp = Date.now().toString(36).toUpperCase();
+  const random = Math.random().toString(36).substring(2, 5).toUpperCase();
+  return `${prefix}-${timestamp}${random}`;
+}
+
+export function paginate(page: number = 1, limit: number = 20) {
+  const skip = (page - 1) * limit;
+  return { skip, take: limit };
+}
+
+export function buildPaginationResponse(
+  page: number,
+  limit: number,
+  total: number
+) {
+  return {
+    page,
+    limit,
+    total,
+    totalPages: Math.ceil(total / limit),
+  };
+}