added validators in project

BookHive/Validators/Members/CreateMemberDtoValidator.cs

@@ -0,0 +1,41 @@
+using BookHive.DTO.Member;
+using FastEndpoints;
+using FluentValidation;
+
+namespace BookHive.Validators.Members;
+
+public class CreateMemberDtoValidator : Validator<CreateMemberDto>
+{
+    public CreateMemberDtoValidator()
+    {
+        RuleFor(x => x.Email)
+            .NotEmpty()
+            .WithMessage("Email is required.")
+            .EmailAddress()
+            .WithMessage("Email is invalid.")
+            .MaximumLength(255)
+            .WithMessage("Email cannot be longer than 255 characters.");
+        
+        RuleFor(x => x.FirstName)
+            .NotEmpty()
+            .WithMessage("First name is required.")
+            .MaximumLength(100)
+            .WithMessage("First name cannot be longer than 100 characters.")
+            .MinimumLength(2)
+            .WithMessage("First name cannot be shorter than 2 characters.");
+        
+        RuleFor(x => x.LastName)
+            .NotEmpty()
+            .WithMessage("Last name is required.")
+            .MaximumLength(100)
+            .WithMessage("Last name cannot be longer than 100 characters.")
+            .MinimumLength(2)
+            .WithMessage("Last name cannot be shorter than 2 characters.");
+        
+        RuleFor(x => x.MembershipDate)
+            .NotEmpty()
+            .WithMessage("Membership date is required.")
+            .Must(d => d <= DateOnly.FromDateTime(DateTime.Now))
+            .WithMessage("Membership date cannot be in the future.");
+    }
+}