Retructured solution

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/AddItemToShoppingCartCommandHandler.cs

@@ -0,0 +1,40 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class AddItemToShoppingCartCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<AddItemToShoppingCartCommand, Result>
+{
+    public async ValueTask<Result> Handle(AddItemToShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ProductPrices.AnyAsync(c => c.Id == request.ProductPriceId, cancellationToken))
+                return Result.Fail($"Product item could not be found with id {request.ProductPriceId}");
+
+            var cart = await context.ShoppingCarts.FirstOrDefaultAsync(c => c.Id == request.ShoppingCartId, cancellationToken);
+
+            if (cart is null)
+                return Result.Fail($"Shopping cart could not be found with id {request.ShoppingCartId}");
+
+            if (cart.ShoppingCartItems?.Any(i => i.ProductPriceId == request.ProductPriceId) == true)
+                return Result.Fail($"Item already in shopping cart with id {request.ShoppingCartId}");
+
+            context.ShoppingCartItems.Add(new Entities.ShoppingCartItem
+            {
+                ShoppingCartId = request.ShoppingCartId,
+                ProductPriceId = request.ProductPriceId,
+                Quantity = request.Quantity
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Failed to add cart item with id {request.ProductPriceId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/AddPackageToShoppingCartCommandHandler.cs

@@ -0,0 +1,39 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class AddPackageToShoppingCartCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<AddPackageToShoppingCartCommand, Result>
+{
+    public async ValueTask<Result> Handle(AddPackageToShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.Packages.AnyAsync(p => p.Id == request.PackageId, cancellationToken))
+                return Result.Fail($"Package cold not be found by ID {request.PackageId}");
+
+            var shoppingCart = await context.ShoppingCarts.FirstOrDefaultAsync(c => c.Id == request.ShoppingCartId, cancellationToken);
+
+            if (shoppingCart is null)
+                return Result.Fail($"Shopping cart could not be found by ID {request.ShoppingCartId}");
+
+            if (!await context.ShoppingCartPackages.AnyAsync(cp => cp.ShoppingCartId == request.ShoppingCartId, cancellationToken))
+                return Result.Fail($"Package {request.PackageId} is already in the cart");
+
+            var newShoppingCartPackage = context.ShoppingCartPackages.Add(new Entities.ShoppingCartPackage
+            {
+                ShoppingCartId = request.ShoppingCartId,
+                PackageId = request.PackageId
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Could not add package of id {request.PackageId} to shopping cart {request.ShoppingCartId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/CreateShoppingCartCommandHandler.cs

@@ -0,0 +1,32 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class CreateShoppingCartCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<CreateShoppingCartCommand, Result<Guid>>
+{
+    public async ValueTask<Result<Guid>> Handle(CreateShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.Customers.AnyAsync(c => c.Id == request.CustomerId, cancellationToken))
+                return Result.Fail<Guid>($"Customer could not be found with id {request.CustomerId}");
+
+            var cart = context.ShoppingCarts.Add(new Entities.ShoppingCart
+            {
+                CustomerId = request.CustomerId,
+                OrderId = request.OrderId,
+                QuoteId = request.QuoteId
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok(cart.Entity.Id)
+                : Result.Fail<Guid>($"Failed to create shopping cart for customer id {request.CustomerId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail<Guid>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/EmptyShoppingCartCommandHandler.cs

@@ -0,0 +1,32 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class EmptyShoppingCartCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<EmptyShoppingCartCommand, Result>
+{
+    public async ValueTask<Result> Handle(EmptyShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ShoppingCarts.AnyAsync(c => c.Id == request.ShoppingCartId, cancellationToken))
+                return Result.Fail($"Shopping could not be found with id {request.ShoppingCartId}");
+
+            if (await context.ShoppingCartItems.CountAsync(i => i.ShoppingCartId == request.ShoppingCartId, cancellationToken) == 0)
+                return Result.Ok();
+
+            var cartItems = await context.ShoppingCartItems.Where(i => i.ShoppingCartId == request.ShoppingCartId).ToListAsync(cancellationToken);
+
+            context.RemoveRange(cartItems);
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Could not empty cart with id {request.ShoppingCartId}");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/RemovePackageFromShoppingCartCommandHandler.cs

@@ -0,0 +1,35 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class RemovePackageFromShoppingCartCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<RemovePackageFromShoppingCartCommand, Result>
+{
+    public async ValueTask<Result> Handle(RemovePackageFromShoppingCartCommand request, CancellationToken cancellationToken)
+    {
+        try
+        {
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ShoppingCarts.AnyAsync(c => c.Id == request.ShoppingCartId, cancellationToken))
+                return Result.Fail($"Shopping cart could not be found by ID {request.ShoppingCartId}");
+
+            if (!await context.ShoppingCartPackages.AnyAsync(p => p.Id == request.ShoppingCartPackageId, cancellationToken))
+                return Result.Fail($"Shopping cart package {request.ShoppingCartPackageId} is not in the shopping cart {request.ShoppingCartId}");
+
+            var shoppingCartPackage = await context.ShoppingCartPackages.FirstOrDefaultAsync(cp => cp.Id == request.ShoppingCartPackageId, cancellationToken);
+
+            if (shoppingCartPackage is null)
+                return Result.Ok();
+
+            context.ShoppingCartPackages.Remove(shoppingCartPackage!);
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Could remove package of id {request.ShoppingCartPackageId} from shopping cart {request.ShoppingCartId}");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/RemoveShoppingCartItemCommandHandler.cs

@@ -0,0 +1,36 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class RemoveShoppingCartItemCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<RemoveShoppingCartItemCommand, Result>
+{
+    public async ValueTask<Result> Handle(RemoveShoppingCartItemCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ProductPrices.AnyAsync(c => c.Id == request.ShoppingCartItemId, cancellationToken))
+                return Result.Fail($"Product item could not be found with id {request.ShoppingCartItemId}");
+
+            var cart = await context.ShoppingCarts.FirstOrDefaultAsync(c => c.Id == request.ShoppingCartId, cancellationToken);
+
+            if (cart is null)
+                return Result.Fail($"Shopping cart item could not be found with id {request.ShoppingCartId}");
+
+            var item = await context.ShoppingCartItems.FirstOrDefaultAsync(i => i.Id == request.ShoppingCartItemId, cancellationToken);
+
+            if (item is null) return Result.Ok();
+
+            context.ShoppingCartItems.Remove(item);
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Failed to remove shopping cart item with id {request.ShoppingCartItemId}");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Shop/ShoppingCarts/Commands/Handlers/UpdateShoppingCartItemCommandHandler.cs

@@ -0,0 +1,32 @@
+using LiteCharms.Features.Shop.Postgres;
+
+namespace LiteCharms.Features.ShoppingCarts.Commands.Handlers;
+
+public class UpdateShoppingCartItemCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<UpdateShoppingCartItemCommand, Result>
+{
+    public async ValueTask<Result> Handle(UpdateShoppingCartItemCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.ShoppingCarts.AnyAsync(c => c.Id == request.ShoppingCartId, cancellationToken))
+                return Result.Fail($"Shopping could not be found with id {request.ShoppingCartId}");
+
+            var item = await context.ShoppingCartItems.FirstOrDefaultAsync(i => i.ShoppingCartId == request.ShoppingCartId, cancellationToken);
+
+            if(item is null)
+                return Result.Fail($"Shopping cart item could not be found with id {request.ShoppingCartItemId}");
+
+            item.Quantity = request.Quantity;
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail($"Failed to update cart item quntity");
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}