using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using libxmltv.Interfaces;
using System.Diagnostics;

namespace libxmltv.Core
{
    internal class XMLTVSource : IXMLTVSource
    {
        private Dictionary<string, string> entries = new Dictionary<string, string>();
        public XMLTVSource(object xmltv)
        {
            XMLTV_LOGGER.Log.Verbose.Debug.WriteLine("Creating Instance of XMLTVSource");
            IXMLTV_PARSER _xmltv;
            if (!Internals.VerifyInstance<IXMLTV_PARSER>(xmltv, out _xmltv)) { return; }
            XMLTV_PARSER = _xmltv;
            Create();
        }
       
        #region IXMLTVSource
        private IXMLTV_PARSER XMLTV_PARSER { get; set; }
        public string SourceName { get { return entries[XMLTV_CONSTANTS.Source.SourceName]; } }
        public string GeneratorName { get { return entries[XMLTV_CONSTANTS.Source.GeneratorName]; } }
        public string GeneratorUrl { get { return entries[XMLTV_CONSTANTS.Source.GeneratorUrl]; } }
        #endregion

        private void Create()
        {
            var doc = XMLTV_PARSER.XMLTV_LOADER.XmlDoc;
            Debug.Assert(doc.Root.Name == XMLTV_CONSTANTS.ROOT_ELEMENT, string.Format("Expected Root Element: '{0}' but read: '{1}'", XMLTV_CONSTANTS.ROOT_ELEMENT, doc.Root.Name));
            XMLTV_LOGGER.Log.Verbose.Debug.WriteLine("\tRoot: {0}", doc.Root.Name);
            var attributes = doc.Root.Attributes().ToList();
            foreach (var attribute in attributes)
            {
                //XMLTV_LOGGER.Log.Verbose.Debug.WriteLine("\t{0}: {1}", attribute.Name, attribute.Value);
                entries.Add(attribute.Name.ToString(), attribute.Value);
            }
        }
        public override string ToString()
        {
            return string.Format("XmlTv Source: '{0}' (Generated by: '{1}') (support: '{2}')", SourceName, GeneratorName, GeneratorUrl);
        }
    }
}