using System;
using System.IO;
using System.Text;
using System.Linq;
using System.Text.RegularExpressions;

namespace PandoraBox
{
    public class APVIDEOPlugin : IPluginMacro
    {
        //пример
        //[APVIDEO]
        Regex _block = new Regex(@"{APVIDEO}(.*?){/APVIDEO}", RegexOptions.Compiled);
        //кодировка
        Encoding _enc = Encoding.GetEncoding("windows-1251");
        //путь к данным
        String _root = @"c:\ap-data\video";
        //шаблон видео
        String _template = "<iframe width='560' height='315' src='https://www.youtube.com/embed/[CODE]' frameborder='0' allowfullscreen></iframe>";

        public string Execute(string template, PluginMacroArgs args)
        {
            return _block.Replace(template, delegate(Match match)
            {
                String key = CleanKey(args.Key);
                String inner = match.Groups[1].Value;
                String file = Path.Combine(_root, key);
                if (!File.Exists(file)) return "";
                String[] lines = File.ReadAllLines(file, _enc);
                String line = lines[Rnd.Next(0, lines.Length - 1)];
                var parts = line.Split('|');
                String code = parts[0];
                if (!code.Contains("=")) return "";
                code = code.Split('=', '&')[1];
                String title = parts[2];
                inner = inner.Replace("[APVIDEO]", _template.Replace("[CODE]", code));
                inner = inner.Replace("[APVIDEOTITLE]", title);
                return inner;
            });
        }

        private string CleanKey(String key)
        {
            String key1 = key;
            key1 = String.Join("", key1.Split(Path.GetInvalidPathChars()));
            key1 = String.Join("", key1.Split(Path.GetInvalidFileNameChars()));
            return key1;
        }

        public ushort Level { get { return 5; } }
        public String Name { get { return "APVIDEOPlugin"; } }
    }
}