feat: 增加分页排序与FluentValidation

src/Application/TakeoutSaaS.Application/App/Merchants/Validators/UpdateMerchantCommandValidator.cs

@@ -0,0 +1,24 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Merchants.Commands;
+
+namespace TakeoutSaaS.Application.App.Merchants.Validators;
+
+/// <summary>
+/// 更新商户命令验证器。
+/// </summary>
+public sealed class UpdateMerchantCommandValidator : AbstractValidator<UpdateMerchantCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UpdateMerchantCommandValidator()
+    {
+        RuleFor(x => x.MerchantId).GreaterThan(0);
+        RuleFor(x => x.BrandName).NotEmpty().MaximumLength(128);
+        RuleFor(x => x.BrandAlias).MaximumLength(64);
+        RuleFor(x => x.LogoUrl).MaximumLength(256);
+        RuleFor(x => x.Category).MaximumLength(64);
+        RuleFor(x => x.ContactPhone).NotEmpty().MaximumLength(32);
+        RuleFor(x => x.ContactEmail).EmailAddress().When(x => !string.IsNullOrWhiteSpace(x.ContactEmail));
+    }
+}