using System;
using System.Globalization;

namespace Sony.Filtr.Contracts.Entities
{
    public class ISRC
    {
        public static ISRC Parse(string isrc)
        {
            if (isrc == null)
                return null;

            isrc = isrc.Replace("-", string.Empty);
            if (!IsValidIsrc(isrc))
            {
                return null;
            }

            return new ISRC(isrc);
        }

        private ISRC(string isrc)
        {
            CountryCode = isrc.Substring(0, 2);
            Issuer = isrc.Substring(2, 3);
            IsrcRegistrationYear = isrc.Substring(5, 2);
            RecordingId = isrc.Substring(7, 5);
        }
        
        private static bool IsValidIsrc(string isrc)
        {
            if (isrc.Length != 12)
                return false;
            return true;
        }

        public string CountryCode { get; private set; }
        public string Issuer { get; private set; }

        public string IsrcRegistrationYear { get; private set; }
        public string RecordingId { get; private set; }

        public bool IsFrontline => (IsrcRegistrationYear == "16" || IsrcRegistrationYear == "15");
    }
}