Added shared projects

LiteCharms.Features/Orders/Commands/CreateOrderCommand.cs

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+namespace LiteCharms.Features.Orders.Commands;
+
+public class CreateOrderCommand : IRequest<Result<Guid>>
+{
+    public Guid CustomerId { get; set; }
+
+    public Guid ProductPriceId { get; set; }
+
+    private CreateOrderCommand(Guid customerId, Guid productPriceId)
+    {
+        CustomerId = customerId;
+        ProductPriceId = productPriceId;
+    }
+
+    public static CreateOrderCommand Create(Guid customerId, Guid productPriceId)
+    {
+        if (customerId == Guid.Empty)
+            throw new ArgumentException("CustomerId is required.", nameof(customerId));
+
+        if (productPriceId == Guid.Empty)
+            throw new ArgumentException("ProductPriceId is required.", nameof(productPriceId));
+
+        return new(customerId, productPriceId);
+    }
+}

LiteCharms.Features/Orders/Commands/Handlers/CreateOrderCommandHandler.cs

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+using LiteCharms.Infrastructure.Database;
+
+namespace LiteCharms.Features.Orders.Commands.Handlers;
+
+public class CreateOrderCommandHandler(IDbContextFactory<LeadGeneratorDbContext> contextFactory) : IRequestHandler<CreateOrderCommand, Result<Guid>>
+{
+    public async ValueTask<Result<Guid>> Handle(CreateOrderCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var newOrder = context.Orders.Add(new Entities.Order
+            {
+                CustomerId = request.CustomerId,
+                ProductPriceId = request.ProductPriceId,
+                CreatedAt = DateTime.UtcNow
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok(newOrder.Entity.Id)
+                : Result.Fail<Guid>(new Error($"Failed to create customer {request.CustomerId} order using product price {request.ProductPriceId}."));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<Guid>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Orders/Commands/Handlers/UpdateOrderCommandHandler.cs

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+using LiteCharms.Infrastructure.Database;
+
+namespace LiteCharms.Features.Orders.Commands.Handlers;
+
+public class UpdateOrderCommandHandler(IDbContextFactory<LeadGeneratorDbContext> contextFactory) : IRequestHandler<UpdateOrderCommand, Result>
+{
+    public async ValueTask<Result> Handle(UpdateOrderCommand request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var order = await context.Orders.FirstOrDefaultAsync(o => o.Id == request.OrderId, cancellationToken);
+
+            if (order is null)
+                return Result.Fail(new Error($"Order {request.OrderId} not found"));
+
+            order.Status = request.Status;
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail(new Error($"Failed to update order {request.OrderId}"));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Orders/Commands/UpdateOrderCommand.cs

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+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Orders.Commands;
+
+public class UpdateOrderCommand : IRequest<Result>
+{
+    public Guid OrderId { get; set; }
+
+    public OrderStatus Status { get; set; }
+
+    public string? Note { get; set; }
+
+    private UpdateOrderCommand(Guid orderId, OrderStatus status, string? note)
+    {
+        OrderId = orderId;
+        Status = status;
+        Note = note;
+    }
+
+    public static UpdateOrderCommand Create(Guid orderId, OrderStatus status, string? note)
+    {
+        if (orderId == Guid.Empty)
+            throw new ArgumentException("OrderId is required.", nameof(orderId));
+
+        if (!Enum.IsDefined(typeof(OrderStatus), status))
+            throw new ArgumentException("Invalid order status.", nameof(status));
+
+        return new(orderId, status, note);
+    }
+}

LiteCharms.Features/Orders/Queries/GetOrderRefundQuery.cs

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+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Orders.Queries;
+
+public class GetOrderRefundQuery : IRequest<Result<OrderRefund>>
+{
+    public Guid OrderId { get; set; }
+
+    public Guid OrderRefundId { get; set; }
+
+    private GetOrderRefundQuery(Guid orderId, Guid orderRefundId)
+    {
+        OrderId = orderId;
+        OrderRefundId = orderRefundId;
+    }
+
+    public static GetOrderRefundQuery Create(Guid orderId, Guid orderRefundId)
+    {
+        if (orderId == Guid.Empty)
+            throw new ArgumentException("OrderId is required.", nameof(orderId));
+
+        if (orderRefundId == Guid.Empty)
+            throw new ArgumentException("OrderRefundId is required.", nameof(orderRefundId));
+
+        return new(orderId, orderRefundId);
+    }
+}

LiteCharms.Features/Orders/Queries/GetOrdersQuery.cs

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+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Orders.Queries;
+
+public class GetOrdersQuery : IRequest<Result<Order[]>>
+{
+    public DateOnly From { get; set; }
+
+    public DateOnly To { get; set; }
+
+    private GetOrdersQuery(DateOnly from, DateOnly to)
+    {
+        From = from;
+        To = to;
+    }
+
+    public static GetOrdersQuery Create(DateOnly from, DateOnly to)
+    {
+        if (from > to)
+            throw new ArgumentException("From date cannot be greater than To date.");
+
+        return new(from, to);
+    }
+}

LiteCharms.Features/Orders/Queries/Handlers/GetOrderRefundQueryHandler.cs

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+using LiteCharms.Extensions;
+using LiteCharms.Infrastructure.Database;
+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Orders.Queries.Handlers;
+
+public class GetOrderRefundQueryHandler(IDbContextFactory<LeadGeneratorDbContext> contextFactory) : IRequestHandler<GetOrderRefundQuery, Result<OrderRefund>>
+{
+    public async ValueTask<Result<OrderRefund>> Handle(GetOrderRefundQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var refund = await context.OrderRefunds.AsNoTracking()
+                .FirstOrDefaultAsync(r => r.OrderId == request.OrderId && r.Id == request.OrderRefundId, cancellationToken);
+            
+            return refund is not null
+                ? Result.Ok(refund.ToModel())
+                : Result.Fail<OrderRefund>(new Error($"Refund {request.OrderRefundId} not found for the given OrderId: {request.OrderId}"));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<OrderRefund>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}

LiteCharms.Features/Orders/Queries/Handlers/GetOrdersQueryHandler.cs

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+using LiteCharms.Extensions;
+using LiteCharms.Infrastructure.Database;
+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Orders.Queries.Handlers;
+
+public class GetOrdersQueryHandler(IDbContextFactory<LeadGeneratorDbContext> contextFactory) : IRequestHandler<GetOrdersQuery, Result<Order[]>>
+{
+    public async ValueTask<Result<Order[]>> Handle(GetOrdersQuery request, CancellationToken cancellationToken)
+    {
+		try
+		{
+            var fromDate = request.From.ToDateTime(TimeOnly.MinValue);
+            var toDate = request.To.ToDateTime(TimeOnly.MaxValue);
+
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var orders = await context.Orders
+                .OrderByDescending(o => o.CreatedAt)
+                .Where(o => o.CreatedAt >= fromDate && o.CreatedAt <= toDate)
+                .ToArrayAsync(cancellationToken);   
+
+            return orders?.Length > 0
+                ? Result.Ok(orders.Select(o => o.ToModel()).ToArray())
+                : Result.Fail<Order[]>(new Error($"No orders found for the specified date range {request.From} - {request.To}."));
+        }
+		catch (Exception ex)
+		{
+            return Result.Fail<Order[]>(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+}