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PyroFetes/Endpoints/QuotationProduct/PatchQuotationProductQuantityEndpoint.cs

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+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using PyroFetes.DTO.QuotationProduct.Request;
+using PyroFetes.DTO.QuotationProduct.Response;
+
+namespace PyroFetes.Endpoints.QuoationProduct;
+
+public class PatchQuotationProductQuantityEndpoint(PyroFetesDbContext database) : Endpoint<PatchQuotationProductQuantityDto, GetQuotationProductDto>
+{
+    public override void Configure()
+    {
+        Patch("/api/quotationProduct/{ProductId}/{QuotationId}/Quantity", x => new { x.ProductId, x.QuotationId });
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(PatchQuotationProductQuantityDto req, CancellationToken ct)
+    {
+        var quotationProduct = await database.QuotationProducts.SingleOrDefaultAsync(qo => qo.ProductId == req.ProductId && qo.QuotationId == req.QuotationId, ct);
+        if (quotationProduct == null)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+        
+        quotationProduct.Quantity = req.Quantity;
+        await database.SaveChangesAsync(ct);
+
+        GetQuotationProductDto responseDto = new()
+        {
+            ProductId = quotationProduct.ProductId,
+            QuotationId = quotationProduct.QuotationId,
+            Quantity = quotationProduct.Quantity
+        };
+        await Send.OkAsync(responseDto, ct);
+    }
+}