using System.Collections.Generic;
using CandyHouseBase.Exceptions;
using CandyHouseBase.Extensions;
using CandyHouseBase.Infrastructure;

namespace CandyHouseBase.DataModels
{
    public class ProductDataModel : IValidation
    {
        public string Id { get; private set; }

        public string Name
        {
            get => name;
            private set
            {
                if (!name.IsEmpty()) OldName = name;
                name = value.Trim();
            }
        }

        public string Description
        {
            get => description;
            private set
            {
                if (!description.IsEmpty()) OldDescription = description;
                description = value.Trim();
            }
        }

        public string OldName { get; private set; }

        public string OldDescription { get; private set; }

        private string name;
        private string description;
        
        public List<IngredientDataModel> IngredientsItems { get; private set; }

        public ProductDataModel(string id, string name, string description, List<IngredientDataModel> ingredients)
        {
            Id = id;
            Name = name;
            Description = description;
            IngredientsItems = ingredients;
        }

        public void Validate()
        {
            if (Id.IsEmpty()) throw new ValidationException("Field Id is empty");
            if (!Id.IsGuid()) throw new ValidationException("Id must be a GUID");
            if (Name.IsEmpty()) throw new ValidationException("Field Name is empty");
            if (Description.IsEmpty()) throw new ValidationException("Field Description is empty");
            if (IngredientsItems.Count == 0) throw new ValidationException("Field IngredientsItems is empty");
        }
    }
}