using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Model.Entities;
using System;
using System.Collections.Generic;
using System.Linq;
namespace MediaBrowser.Dlna.PlayTo
{
internal class DidlBuilder
{
const string CRLF = "\r\n";
const string UNKNOWN = "Unknown";
const string DIDL_START = @"- " + CRLF;
const string DIDL_TITLE = @" {0}" + CRLF;
const string DIDL_ARTIST = @"{0}" + CRLF;
const string DIDL_ALBUM = @"{0}" + CRLF;
const string DIDL_TRACKNUM = @"{0}" + CRLF;
const string DIDL_VIDEOCLASS = @" object.item.videoItem" + CRLF;
const string DIDL_AUDIOCLASS = @" object.item.audioItem.musicTrack" + CRLF;
const string DIDL_IMAGE = @" {0}" + CRLF +
@" {0}" + CRLF;
const string DIDL_RELEASEDATE = @" {0}" + CRLF;
const string DIDL_GENRE = @" {0}" + CRLF;
const string DESCRIPTION = @" {0}" + CRLF;
const string DIDL_VIDEO_RES = @" {4}" + CRLF;
const string DIDL_AUDIO_RES = @" {3}" + CRLF;
const string DIDL_IMAGE_RES = @" {0}" + CRLF;
const string DIDL_ALBUMIMAGE_RES = @" {0}" + CRLF;
const string DIDL_RATING = @" {0}" + CRLF;
const string DIDL_END = "
";
///
/// Builds a Didl MetaData object for the specified dto.
///
/// The dto.
/// The user identifier.
/// The server address.
/// The stream URL.
/// The streams.
/// System.String.
public static string Build(BaseItem dto, string userId, string serverAddress, string streamUrl, IEnumerable streams)
{
string response = string.Format(DIDL_START, dto.Id, userId);
response += string.Format(DIDL_TITLE, dto.Name.Replace("&", "and"));
if (IsVideo(dto))
response += DIDL_VIDEOCLASS;
else
response += DIDL_AUDIOCLASS;
var imageUrl = GetImageUrl(dto, serverAddress);
if (!string.IsNullOrEmpty(imageUrl))
{
response += string.Format(DIDL_IMAGE, imageUrl);
}
response += string.Format(DIDL_RELEASEDATE, GetDateString(dto.PremiereDate));
//TODO Add genres to didl;
response += string.Format(DIDL_GENRE, UNKNOWN);
if (IsVideo(dto))
{
response += string.Format(DESCRIPTION, UNKNOWN);
response += GetVideoDIDL(dto, streamUrl, streams);
if (!string.IsNullOrEmpty(imageUrl))
{
response += string.Format(DIDL_IMAGE_RES, imageUrl);
}
}
else
{
var audio = dto as Audio;
if (audio != null)
{
response += string.Format(DIDL_ARTIST, audio.Artists.FirstOrDefault() ?? UNKNOWN);
response += string.Format(DIDL_ALBUM, audio.Album);
response += string.Format(DIDL_TRACKNUM, audio.IndexNumber ?? 0);
}
response += GetAudioDIDL(dto, streamUrl, streams);
if (!string.IsNullOrEmpty(imageUrl))
{
response += string.Format(DIDL_ALBUMIMAGE_RES, imageUrl);
}
}
response += DIDL_END;
return response;
}
private static string GetVideoDIDL(BaseItem dto, string streamUrl, IEnumerable streams)
{
var videostream = streams.Where(stream => stream.Type == MediaStreamType.Video).OrderBy(s => s.IsDefault ? 0 : 1).FirstOrDefault();
if (videostream == null)
{
// TOOD: ???
return string.Empty;
}
return string.Format(DIDL_VIDEO_RES, videostream.BitRate.HasValue ? videostream.BitRate.Value / 10 : 0, GetDurationString(dto), videostream.Width ?? 0, videostream.Height ?? 0, streamUrl);
}
private static string GetAudioDIDL(BaseItem dto, string streamUrl, IEnumerable streams)
{
var audiostream = streams.Where(stream => stream.Type == MediaStreamType.Audio).OrderBy(s => s.IsDefault ? 0 : 1).FirstOrDefault();
if (audiostream == null)
{
// TOOD: ???
return string.Empty;
}
return string.Format(DIDL_AUDIO_RES, audiostream.BitRate.HasValue ? audiostream.BitRate.Value / 10 : 16000, GetDurationString(dto), audiostream.SampleRate ?? 0, streamUrl);
}
private static string GetImageUrl(BaseItem dto, string serverAddress)
{
const ImageType imageType = ImageType.Primary;
if (!dto.HasImage(imageType))
{
dto = dto.Parents.FirstOrDefault(i => i.HasImage(imageType));
}
return dto == null ? null : string.Format("{0}/Items/{1}/Images/{2}", serverAddress, dto.Id, imageType);
}
private static string GetDurationString(BaseItem dto)
{
var duration = TimeSpan.FromTicks(dto.RunTimeTicks.HasValue ? dto.RunTimeTicks.Value : 0);
// TODO: Bad format string?
return string.Format("{0}:{1:00}:2{00}.000", duration.Hours, duration.Minutes, duration.Seconds);
}
private static string GetDateString(DateTime? date)
{
if (!date.HasValue)
return UNKNOWN;
return string.Format("{0}-{1:00}-{2:00}", date.Value.Year, date.Value.Month, date.Value.Day);
}
private static bool IsVideo(BaseItem item)
{
return string.Equals(item.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
}
}
}