chore: init project

src/InboxIntel.Application/Validation/Validators.cs

@@ -0,0 +1,48 @@
+using FluentValidation;
+using InboxIntel.Application.DTOs;
+using InboxIntel.Domain.Enums;
+
+namespace InboxIntel.Application.Validation;
+
+public class SearchRequestValidator : AbstractValidator<SearchRequestDto>
+{
+    public SearchRequestValidator()
+    {
+        RuleFor(x => x.Page).GreaterThan(0);
+        RuleFor(x => x.PageSize).InclusiveBetween(1, 200);
+        RuleFor(x => x)
+            .Must(x => x.From is null || x.To is null || x.From <= x.To)
+            .WithMessage("'From' date must be on or before 'To' date.");
+    }
+}
+
+public class CleanupRequestValidator : AbstractValidator<CleanupRequestDto>
+{
+    public CleanupRequestValidator()
+    {
+        RuleFor(x => x)
+            .Must(x => (x.EmailIds is { Count: > 0 }) || !string.IsNullOrWhiteSpace(x.Query))
+            .WithMessage("Provide either EmailIds or a Query to target emails.");
+
+        // Safety rule: destructive actions must be explicitly confirmed.
+        RuleFor(x => x.Confirmed)
+            .Equal(true)
+            .When(x => x.Action is CleanupActionType.Trash or CleanupActionType.HardDelete)
+            .WithMessage("Destructive actions require explicit confirmation.");
+
+        RuleFor(x => x.LabelId)
+            .NotEmpty()
+            .When(x => x.Action is CleanupActionType.AddLabel or CleanupActionType.RemoveLabel)
+            .WithMessage("A LabelId is required for label actions.");
+    }
+}
+
+public class UnsubscribeRequestValidator : AbstractValidator<UnsubscribeRequestDto>
+{
+    public UnsubscribeRequestValidator()
+    {
+        RuleFor(x => x.ItemIds).NotEmpty();
+        RuleFor(x => x.Confirmed).Equal(true)
+            .WithMessage("Unsubscribe actions require explicit confirmation.");
+    }
+}