using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace bnhtrade.Core.Model.Stock
{
    /// <summary>
    /// Model/Data used to create an intial entry in the stock SKU transaction table
    /// </summary>
    public class SkuTransactionCreate : IValidatableObject
    {
        [Required()]
        public DateTime TransactionDate { get; private set; }

        [Required()]
        public string SkuTransactionTypeCode { get; private set; }

        public int? ForeignKey { get; private set; }

        public string Reference { get; private set; }

        public string Detail { get; private set; }

        [Required()]
        public string SkuNumber { get; private set; }

        [Required(), Range(0, short.MaxValue)]
        public int Quantity { get; private set; } // cannot be negative

        public SkuTransactionCreate(DateTime transactionDate, string transactionTypeCode, int? foreignKey, string reference, string detail
            , string skuNumber, int quantity)
        {
            this.TransactionDate = transactionDate;
            this.SkuTransactionTypeCode = transactionTypeCode;
            this.ForeignKey = foreignKey;
            this.Reference = reference;
            this.Detail = detail;
            this.SkuNumber = skuNumber;
            this.Quantity = quantity;

            //var context = new ValidationContext(null);
            var vaild = Validate(null);
            if (new Logic.Validate.SkuTransaction().IsValidResult)
            if (vaild.Any())
            {
                throw new Exception("Invalid parameters set");
            }
        }

        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
        {
            var result = new List<ValidationResult>();

            if (Logic.Validate.Format.DateTime(TransactionDate) == false)
            {
                result.Add(new ValidationResult("Invalid transaction date"));
            }
            if (string.IsNullOrEmpty(SkuTransactionTypeCode))
            {
                result.Add(new ValidationResult("Invalid transaction type code"));
            }
            if (Logic.Validate.Format.SkuNumber(SkuNumber) == false)
            {
                result.Add(new ValidationResult("Invalid SKU number"));
            }
            return result;
        }
    }
}