suppr all 'var' and Models.xxx. And added 's' at the end of all directories endpoints

PyroFetes/Endpoints/WareHouseProducts/GetTotalQuantityEndpoint.cs

@@ -0,0 +1,43 @@
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using PyroFetes.DTO.WareHouseProduct.Response;
+using PyroFetes.Models;
+
+namespace PyroFetes.Endpoints.WareHouseProducts;
+
+public class GetTotalQuantityRequest
+{
+    public int ProductId { get; set; }
+}
+
+public class GetTotalQuantityEndpoint(PyroFetesDbContext database) : Endpoint<GetTotalQuantityRequest, GetTotalQuantityDto>
+{
+    public override void Configure()
+    {
+        Get("/api/wareHouseProduct/{@ProductId}", x => new { x.ProductId });
+        AllowAnonymous();
+    }
+    
+    public override async Task HandleAsync(GetTotalQuantityRequest req, CancellationToken ct)
+    {
+        bool exists = await database.WarehouseProducts
+            .AnyAsync(wp => wp.ProductId == req.ProductId, ct);
+
+        if (!exists)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+        
+        int totalQuantity = await database.WarehouseProducts
+            .Where(wp => wp.ProductId == req.ProductId)
+            .SumAsync(wp => wp.Quantity, ct);
+
+        GetTotalQuantityDto responseDto = new()
+        {
+            ProductId = req.ProductId,
+            TotalQuantity = totalQuantity
+        };
+        await Send.OkAsync(responseDto, ct);
+    }
+}