updeted

Backend/ERPCore/Services/Hrm/DepartmentService.cs

@@ -127,6 +127,22 @@ public sealed class DepartmentService : IDepartmentService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int departmentId, CancellationToken ct = default)
+    {
+        var dept = await _departments.GetByIdAsync(departmentId, ct)
+            ?? throw new NotFoundException($"Department {departmentId} was not found.");
+
+        _departments.Remove(dept);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This department is referenced by other records (sub-departments or employees) and cannot be deleted.", 409);
+        }
+    }
+
     /// <summary>Walks up from <paramref name="newParentId"/>; throws if it ever reaches <paramref name="departmentId"/>.</summary>
     private async Task EnsureNoCycleAsync(int departmentId, int newParentId, CancellationToken ct)
     {

Backend/ERPCore/Services/Hrm/DesignationService.cs

@@ -101,5 +101,21 @@ public sealed class DesignationService : IDesignationService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int designationId, CancellationToken ct = default)
+    {
+        var designation = await _designations.GetByIdAsync(designationId, ct)
+            ?? throw new NotFoundException($"Designation {designationId} was not found.");
+
+        _designations.Remove(designation);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This designation is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static DesignationDto Map(Designation d) => new(d.DesignationId, d.Code, d.Name, d.Status, d.CreatedAt, d.UpdatedAt);
 }

Backend/ERPCore/Services/Hrm/EmploymentTypeService.cs

@@ -101,5 +101,21 @@ public sealed class EmploymentTypeService : IEmploymentTypeService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int employmentTypeId, CancellationToken ct = default)
+    {
+        var et = await _employmentTypes.GetByIdAsync(employmentTypeId, ct)
+            ?? throw new NotFoundException($"Employment type {employmentTypeId} was not found.");
+
+        _employmentTypes.Remove(et);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This employment type is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static EmploymentTypeDto Map(EmploymentType e) => new(e.EmploymentTypeId, e.Code, e.Name, e.Status, e.CreatedAt, e.UpdatedAt);
 }

Backend/ERPCore/Services/Hrm/HrDocumentTypeService.cs

@@ -108,6 +108,22 @@ public sealed class HrDocumentTypeService : IHrDocumentTypeService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int hrDocumentTypeId, CancellationToken ct = default)
+    {
+        var type = await _types.GetByIdAsync(hrDocumentTypeId, ct)
+            ?? throw new NotFoundException($"Document type {hrDocumentTypeId} was not found.");
+
+        _types.Remove(type);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This document type is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static HrDocumentTypeDto Map(HrDocumentType t) => new(
         t.HrDocumentTypeId, t.Code, t.Name, t.Category, t.RequiredAtOnboarding, t.ExpiryTracked, t.Status, t.CreatedAt, t.UpdatedAt);
 }

Backend/ERPCore/Services/Hrm/LeaveRequestService.cs

@@ -43,6 +43,11 @@ public sealed class LeaveRequestService : ILeaveRequestService
         var q = _requests.Query().AsNoTracking().Include(r => r.Employee).Include(r => r.LeaveType).AsQueryable();
         if (employeeId is not null) q = q.Where(r => r.EmployeeId == employeeId);
         if (status is not null) q = q.Where(r => r.Status == status);
+        if (!string.IsNullOrWhiteSpace(query.Q))
+        {
+            var term = query.Q.Trim();
+            q = q.Where(r => EF.Functions.ILike(r.DocNo, $"%{term}%") || EF.Functions.ILike(r.Employee!.FullName, $"%{term}%"));
+        }
 
         var total = await q.CountAsync(ct);
         var rows = await q.OrderByDescending(r => r.CreatedAt)

Backend/ERPCore/Services/Hrm/LeaveTypeService.cs

@@ -113,6 +113,22 @@ public sealed class LeaveTypeService : ILeaveTypeService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int leaveTypeId, CancellationToken ct = default)
+    {
+        var type = await _types.GetByIdAsync(leaveTypeId, ct)
+            ?? throw new NotFoundException($"Leave type {leaveTypeId} was not found.");
+
+        _types.Remove(type);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This leave type is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static LeaveTypeDto Map(LeaveType t) => new(
         t.LeaveTypeId, t.Code, t.Name, t.IsPaid, t.CountsAsNoPay, t.AccrualPerYear,
         t.CarryForwardAllowed, t.MaxCarryForwardDays, t.RequiresApproval, t.Status, t.CreatedAt, t.UpdatedAt);

Backend/ERPCore/Services/Hrm/SalaryComponentService.cs

@@ -107,6 +107,22 @@ public sealed class SalaryComponentService : ISalaryComponentService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int salaryComponentId, CancellationToken ct = default)
+    {
+        var component = await _components.GetByIdAsync(salaryComponentId, ct)
+            ?? throw new NotFoundException($"Salary component {salaryComponentId} was not found.");
+
+        _components.Remove(component);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This salary component is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static SalaryComponentDto Map(SalaryComponent c) => new(
         c.SalaryComponentId, c.Code, c.Name, c.ComponentType, c.IsTaxable, c.IsEpfEtfApplicable, c.Status, c.CreatedAt, c.UpdatedAt);
 }

Backend/ERPCore/Services/Hrm/WorkShiftService.cs

@@ -120,6 +120,22 @@ public sealed class WorkShiftService : IWorkShiftService
         await _uow.SaveChangesAsync(ct);
     }
 
+    public async Task DeleteAsync(int workShiftId, CancellationToken ct = default)
+    {
+        var shift = await _shifts.GetByIdAsync(workShiftId, ct)
+            ?? throw new NotFoundException($"Work shift {workShiftId} was not found.");
+
+        _shifts.Remove(shift);
+        try
+        {
+            await _uow.SaveChangesAsync(ct);
+        }
+        catch (DbUpdateException)
+        {
+            throw new DomainException(ErrorCodes.MasterInUse, "This work shift is referenced by other records and cannot be deleted.", 409);
+        }
+    }
+
     private static WorkShiftDto Map(WorkShift w) => new(
         w.WorkShiftId, w.Code, w.Name, w.StartTime, w.EndTime, w.IsOvernight,
         w.GraceMinutes, w.BreakMinutes, w.StandardWorkingMinutes, w.OtMultiplier, w.WorkingDaysMask,

Backend/ERPCore/Services/Interfaces/IDepartmentService.cs

@@ -13,4 +13,5 @@ public interface IDepartmentService
     Task<ETagged<DepartmentDto>> CreateAsync(CreateDepartmentRequest request, CancellationToken ct = default);
     Task<ETagged<DepartmentDto>> UpdateAsync(int departmentId, UpdateDepartmentRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int departmentId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int departmentId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/IDesignationService.cs

@@ -12,4 +12,5 @@ public interface IDesignationService
     Task<ETagged<DesignationDto>> CreateAsync(CreateDesignationRequest request, CancellationToken ct = default);
     Task<ETagged<DesignationDto>> UpdateAsync(int designationId, UpdateDesignationRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int designationId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int designationId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/IEmploymentTypeService.cs

@@ -12,4 +12,5 @@ public interface IEmploymentTypeService
     Task<ETagged<EmploymentTypeDto>> CreateAsync(CreateEmploymentTypeRequest request, CancellationToken ct = default);
     Task<ETagged<EmploymentTypeDto>> UpdateAsync(int employmentTypeId, UpdateEmploymentTypeRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int employmentTypeId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int employmentTypeId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/IHrDocumentTypeService.cs

@@ -13,4 +13,5 @@ public interface IHrDocumentTypeService
     Task<ETagged<HrDocumentTypeDto>> CreateAsync(CreateHrDocumentTypeRequest request, CancellationToken ct = default);
     Task<ETagged<HrDocumentTypeDto>> UpdateAsync(int hrDocumentTypeId, UpdateHrDocumentTypeRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int hrDocumentTypeId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int hrDocumentTypeId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/ILeaveTypeService.cs

@@ -12,4 +12,5 @@ public interface ILeaveTypeService
     Task<ETagged<LeaveTypeDto>> CreateAsync(CreateLeaveTypeRequest request, CancellationToken ct = default);
     Task<ETagged<LeaveTypeDto>> UpdateAsync(int leaveTypeId, UpdateLeaveTypeRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int leaveTypeId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int leaveTypeId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/ISalaryComponentService.cs

@@ -12,4 +12,5 @@ public interface ISalaryComponentService
     Task<ETagged<SalaryComponentDto>> CreateAsync(CreateSalaryComponentRequest request, CancellationToken ct = default);
     Task<ETagged<SalaryComponentDto>> UpdateAsync(int salaryComponentId, UpdateSalaryComponentRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int salaryComponentId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int salaryComponentId, CancellationToken ct = default);
 }

Backend/ERPCore/Services/Interfaces/IWorkShiftService.cs

@@ -12,4 +12,5 @@ public interface IWorkShiftService
     Task<ETagged<WorkShiftDto>> CreateAsync(CreateWorkShiftRequest request, CancellationToken ct = default);
     Task<ETagged<WorkShiftDto>> UpdateAsync(int workShiftId, UpdateWorkShiftRequest request, uint expectedRowVersion, CancellationToken ct = default);
     Task SetStatusAsync(int workShiftId, EntityStatus status, CancellationToken ct = default);
+    Task DeleteAsync(int workShiftId, CancellationToken ct = default);
 }