initial commit

Features/Purchase/PurchaseOrder/Cqrs/CreatePurchaseOrderItemHandler.cs

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+using Indotalent.Infrastructure.Database;
+using MediatR;
+using Indotalent.Shared.Utils;
+
+namespace Indotalent.Features.Purchase.PurchaseOrder.Cqrs;
+
+public class CreatePurchaseOrderItemRequest
+{
+    public string? PurchaseOrderId { get; set; }
+    public string? ProductId { get; set; }
+    public string? Summary { get; set; }
+    public decimal? UnitPrice { get; set; }
+    public double? Quantity { get; set; }
+}
+
+public record CreatePurchaseOrderItemCommand(CreatePurchaseOrderItemRequest Data) : IRequest<bool>;
+
+public class CreatePurchaseOrderItemHandler : IRequestHandler<CreatePurchaseOrderItemCommand, bool>
+{
+    private readonly AppDbContext _context;
+    public CreatePurchaseOrderItemHandler(AppDbContext context) => _context = context;
+
+    public async Task<bool> Handle(CreatePurchaseOrderItemCommand request, CancellationToken cancellationToken)
+    {
+        var entity = new Data.Entities.PurchaseOrderItem
+        {
+            PurchaseOrderId = request.Data.PurchaseOrderId,
+            ProductId = request.Data.ProductId,
+            Summary = request.Data.Summary,
+            UnitPrice = request.Data.UnitPrice ?? 0,
+            Quantity = request.Data.Quantity ?? 0,
+            Total = (request.Data.UnitPrice ?? 0) * (decimal)(request.Data.Quantity ?? 0)
+        };
+
+        _context.PurchaseOrderItem.Add(entity);
+        await _context.SaveChangesAsync(cancellationToken);
+
+        if (!string.IsNullOrEmpty(request.Data.PurchaseOrderId))
+        {
+            PurchaseOrderHelper.Recalculate(_context, request.Data.PurchaseOrderId);
+        }
+
+        return true;
+    }
+}