Added shared projects

LiteCharms.Features/Leads/Queries/GetCustomerLeadsQuery.cs

@@ -0,0 +1,30 @@
+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Leads.Queries;
+
+public class GetCustomerLeadsQuery : IRequest<Result<Lead[]>>
+{
+    public Guid CustomerId { get; }
+
+    public DateOnly From { get; set; }
+
+    public DateOnly To { get; set; }
+
+    private GetCustomerLeadsQuery(Guid customerId, DateOnly from, DateOnly to)
+    {
+        CustomerId = customerId;
+        From = from;
+        To = to;
+    }
+
+    public static GetCustomerLeadsQuery Create(Guid customerId, DateOnly from, DateOnly to)
+    {
+        if(customerId == Guid.Empty)
+            throw new ArgumentException("Customer ID cannot be empty.", nameof(customerId));
+
+        if(from > to)
+            throw new ArgumentException("The 'From' date cannot be later than the 'To' date.");
+
+        return new(customerId, from, to);
+    }
+}