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C#
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using BitterlyAndExclamationMarkContracts.Enums;
using BitterlyAndExclamationMarkContracts.Extensions;
using BitterlyAndExclamationMarkContracts.Infrastructure;
using System.ComponentModel.DataAnnotations;
public class DishDataModel(string id, string dishName, DishType dishType, string сookId, double price, bool isDeleted) : IValidation
{
public string Id { get; private set; } = id;
public string DishName { get; private set; } = dishName;
public DishType DishType { get; private set; } = dishType;
public string СookId { get; private set; } = сookId;
public double Price { get; private set; } = price;
public bool IsDeleted { get; private set; } = isDeleted;
public void Validate()
{
if (Id.IsEmpty())
throw new ValidationException("Field Id is empty");
if (!Id.IsGuid())
throw new ValidationException("The value in the field Id is not a unique identifier");
if (DishName.IsEmpty())
throw new ValidationException("Field DishName is empty");
if (DishType == DishType.None)
throw new ValidationException("Field DishType is empty");
if (СookId.IsEmpty())
throw new ValidationException("Field СookId is empty");
if (!СookId.IsGuid())
throw new ValidationException("The value in the field СookId is not a unique identifier");
if (Price <= 0)
throw new ValidationException("Field Price is less than or equal to 0");
}
}