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

PyroFetes/Endpoints/PurchaseProducts/CreatePurchaseProductEndpoint.cs

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+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using PyroFetes.DTO.PurchaseProduct.Request;
+using PyroFetes.DTO.PurchaseProduct.Response;
+using PyroFetes.Models;
+
+namespace PyroFetes.Endpoints.PurchaseProducts;
+
+public class CreatePurchaseProductEndpoint(PyroFetesDbContext database) : Endpoint<CreatePurchaseProductDto, GetPurchaseProductDto>
+{
+    public override void Configure()
+    {
+        Post("/api/purchaseProducts");
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(CreatePurchaseProductDto req, CancellationToken ct)
+    {
+        Product? product = await database.Products.FirstOrDefaultAsync(p => p.Id == req.ProductId, ct);
+        if (product == null)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+        
+        PurchaseOrder? purchaseOrder = await database.PurchaseOrders.FirstOrDefaultAsync(po => po.Id == req.PurchaseOrderId, ct);
+        
+        if (purchaseOrder == null)
+        {
+            purchaseOrder = new PurchaseOrder()
+            {
+                PurchaseConditions = req.PurchaseOrderPurchaseConditions ?? "Conditions non précisées"
+            };
+            database.PurchaseOrders.Add(purchaseOrder);
+            await database.SaveChangesAsync(ct);
+        }
+        
+        PurchaseProduct purchaseProduct = new PurchaseProduct()
+        {
+            ProductId = product.Id,
+            PurchaseOrderId = purchaseOrder.Id,
+            Quantity = req.Quantity
+        };
+        database.PurchaseProducts.Add(purchaseProduct);
+        await database.SaveChangesAsync(ct);
+        
+        GetPurchaseProductDto responseDto = new GetPurchaseProductDto()
+        {
+            ProductId = product.Id,
+            ProductReferences = product.Reference,
+            ProductName = product.Name,
+            ProductDuration = product.Duration,
+            ProductCaliber = product.Caliber,
+            ProductApprovalNumber = product.ApprovalNumber,
+            ProductWeight = product.Weight,
+            ProductNec = product.Nec,
+            ProductImage = product.Image,
+            ProductLink = product.Link,
+            ProductMinimalQuantity = product.MinimalQuantity,
+
+            PurchaseOrderId = purchaseOrder.Id,
+            PurchaseOrderPurchaseConditions = purchaseOrder.PurchaseConditions,
+            Quantity = purchaseProduct.Quantity
+        };
+
+        await Send.OkAsync(responseDto, ct);
+    }
+}

PyroFetes/Endpoints/PurchaseProducts/DeletePurchaseProductEndpoint.cs

@@ -0,0 +1,37 @@
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using PyroFetes.Models;
+
+namespace PyroFetes.Endpoints.PurchaseProducts;
+
+public class DeletePurchaseProductRequest
+{
+    public int ProductId { get; set; }
+    public int PurchaseOrderId { get; set; }
+}
+
+public class DeletePurchaseOrderEndpoint(PyroFetesDbContext database) : Endpoint<DeletePurchaseProductRequest>
+{
+    public override void Configure()
+    {
+        Delete("/api/purchaseProducts/{@ProductId}/{@PurchaseOrderId}", x => new {x.ProductId, x.PurchaseOrderId});
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(DeletePurchaseProductRequest req, CancellationToken ct)
+    {
+        PurchaseProduct? purchaseProduct = await database.PurchaseProducts
+            .SingleOrDefaultAsync(po => po.ProductId == req.ProductId && po.PurchaseOrderId == req.PurchaseOrderId, ct);
+
+        if (purchaseProduct == null)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+        
+        database.PurchaseProducts.Remove(purchaseProduct); 
+        await database.SaveChangesAsync(ct);
+        
+        await Send.NoContentAsync(ct);
+    }
+}

PyroFetes/Endpoints/PurchaseProducts/PatchPurchaseProductQuantityEndpoint.cs

@@ -0,0 +1,37 @@
+using FastEndpoints;
+using Microsoft.EntityFrameworkCore;
+using PyroFetes.DTO.PurchaseProduct.Request;
+using PyroFetes.DTO.PurchaseProduct.Response;
+using PyroFetes.Models;
+
+namespace PyroFetes.Endpoints.PurchaseProducts;
+
+public class PatchPurchaseProductQuantityEndpoint(PyroFetesDbContext database) : Endpoint<PatchPurchaseProductQuantityDto, GetPurchaseProductDto>
+{
+    public override void Configure()
+    {
+        Patch("/api/purchaseProducts/{@ProductId}/{@PurchaseOrderId}/Quantity", x => new { x.ProductId, x.PurchaseOrderId });
+        AllowAnonymous();
+    }
+
+    public override async Task HandleAsync(PatchPurchaseProductQuantityDto req, CancellationToken ct)
+    {
+        PurchaseProduct? purchaseProduct = await database.PurchaseProducts.SingleOrDefaultAsync(po => po.ProductId == req.ProductId && po.PurchaseOrderId == req.PurchaseOrderId, ct);
+        if (purchaseProduct == null)
+        {
+            await Send.NotFoundAsync(ct);
+            return;
+        }
+        
+        purchaseProduct.Quantity = req.Quantity;
+        await database.SaveChangesAsync(ct);
+
+        GetPurchaseProductDto responseDto = new()
+        {
+            ProductId = purchaseProduct.ProductId,
+            PurchaseOrderId = purchaseProduct.PurchaseOrderId,
+            Quantity = purchaseProduct.Quantity
+        };
+        await Send.OkAsync(responseDto, ct);
+    }
+}