using System;
using System.Data;
using System.Linq;
using System.Text.RegularExpressions;

namespace Sony.Filtr.Contracts.Entities
{
    [Serializable]
    public class Artist
    {
        public const string Version = "1";

        public Artist(string name)
        {
            Name = name;
        }

        public Artist(IDataRecord reader)
        {
            Name = reader.GetString(0);
            if (!reader.IsDBNull(1))
                ImageUrl = reader.GetString(1);
            if (!reader.IsDBNull(2))
                LastFMImageID = reader.GetString(2);
            if (!reader.IsDBNull(3))
                IsSonyArtist = reader.GetBoolean(3);
            if (!reader.IsDBNull(4))
                Listeners = reader.GetInt32(4);
            if (!reader.IsDBNull(5))
                PlayCount = reader.GetInt32(5);
        }

        private string ExtractArtistImageID(string imageUrl)
        {
            var match = Regex.Match(imageUrl, @"http://userserve-ak.last.fm/serve/64/(.*)\."); //Looks like http://userserve-ak.last.fm/serve/64/71794894.png, could be other extensions
            if (match.Groups.Count > 1)
                return match.Groups[1].Value;

            return null;
        }

        public string Name { get; set; }
        public string ImageUrl { get; set; }
        public bool IsSonyArtist { get; set; }
        public int Listeners { get; set; }
        public int PlayCount { get; set; }
        private string _lastFMImageID = null;



        public string LastFMImageID
        {
            get
            {
                if (_lastFMImageID == null && !string.IsNullOrWhiteSpace(ImageUrl))
                {
                    _lastFMImageID = ExtractArtistImageID(ImageUrl);
                }
                return _lastFMImageID;
            }
            set
            {
                _lastFMImageID = value;
            }
        }

        
    }
}