addition expense claims

backend/prisma/migrations/20260420110000_add_expense_claims/migration.sql

@@ -0,0 +1,26 @@
+CREATE TABLE "expense_claims" (
+    "id" TEXT NOT NULL,
+    "employeeId" TEXT NOT NULL,
+    "claimNumber" TEXT NOT NULL,
+    "expenseDate" DATE,
+    "amount" DECIMAL(12,2),
+    "description" TEXT,
+    "projectOrTender" TEXT,
+    "status" TEXT NOT NULL DEFAULT 'PENDING',
+    "approvedBy" TEXT,
+    "approvedAt" TIMESTAMP(3),
+    "rejectedReason" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "expense_claims_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX "expense_claims_claimNumber_key" ON "expense_claims"("claimNumber");
+CREATE INDEX "expense_claims_employeeId_idx" ON "expense_claims"("employeeId");
+CREATE INDEX "expense_claims_status_idx" ON "expense_claims"("status");
+
+ALTER TABLE "expense_claims"
+ADD CONSTRAINT "expense_claims_employeeId_fkey"
+FOREIGN KEY ("employeeId") REFERENCES "employees"("id")
+ON DELETE RESTRICT ON UPDATE CASCADE;

backend/prisma/migrations/20260420150000_add_expense_claim_items/migration.sql

@@ -0,0 +1,9 @@
+ALTER TABLE "expense_claims"
+ADD COLUMN "items" JSONB;
+
+ALTER TABLE "expense_claims"
+ADD COLUMN "totalAmount" DECIMAL(12,2);
+
+UPDATE "expense_claims"
+SET "totalAmount" = "amount"
+WHERE "totalAmount" IS NULL AND "amount" IS NOT NULL;

backend/prisma/schema.prisma

@@ -200,6 +200,7 @@ model Employee {
   commissions       Commission[]
   loans             Loan[]
   purchaseRequests  PurchaseRequest[]
+  expenseClaims     ExpenseClaim[]
   leaveEntitlements LeaveEntitlement[]
   employeeContracts EmployeeContract[]
   tenderDirectivesAssigned TenderDirective[]
@@ -503,6 +504,34 @@ model PurchaseRequest {
   @@map("purchase_requests")
 }
 
+model ExpenseClaim {
+  id              String    @id @default(uuid())
+  employeeId      String
+  employee        Employee  @relation(fields: [employeeId], references: [id])
+
+  claimNumber     String    @unique
+
+  items           Json?
+  totalAmount     Decimal?  @db.Decimal(12, 2)
+
+  expenseDate     DateTime? @db.Date
+  amount          Decimal?  @db.Decimal(12, 2)
+  description     String?
+  projectOrTender String?
+
+  status          String    @default("PENDING")
+  approvedBy      String?
+  approvedAt      DateTime?
+  rejectedReason  String?
+
+  createdAt       DateTime  @default(now())
+  updatedAt       DateTime  @updatedAt
+
+  @@index([employeeId])
+  @@index([status])
+  @@map("expense_claims")
+}
+
 model LeaveEntitlement {
   id            String   @id @default(uuid())
   employeeId    String