/// <summary>
/// CDDB リードコマンドの実行
/// </summary>
/// <param name="cmdArray"></param>
/// <returns></returns>
private async Task <string> Read(string[] cmdArray, string userId)
{
ReadCommand command = null;
if (ReadCommand.TryCreate(cmdArray, out command) == false)
{
return("500 Command syntax error.");
}
Album[] albums = await this.gracenoteClient.GetAlbumInfo(command.DiscId, userId);
return(CddbUtil.CreateReadResponse(command, albums));
}
/// <summary>
/// 文字列をパースする
/// </summary>
/// <param name="cmdArray"></param>
/// <param name="command"></param>
/// <returns></returns>
/// <remarks>
/// 仕様書の該当箇所
///
/// Client command:
/// -> cddb read categ discid
/// categ:
/// CD category. Example: rock
/// discid:
/// CD disc ID number. Example: f50a3b13
/// </remarks>
public static bool TryCreate(string[] cmdArray, out ReadCommand command)
{
command = null;
// 足りない
if (cmdArray.Length < 4)
{
return(false);
}
command = new ReadCommand
{
Category = cmdArray[2],
DiscId = cmdArray[3],
};
return(true);
}
/// <summary>
/// リードコマンドの応答文字列を作成する
/// </summary>
/// <param name="command"></param>
/// <param name="album"></param>
/// <returns></returns>
public static string CreateReadResponse(ReadCommand command, Album[] albums)
{
if (albums == null || albums.Length == 0)
{
return("401 " + command.Category + " " + command.DiscId + " No such CD entry in database." + Environment.NewLine);
}
Album album = albums[0];
StringBuilder result = new StringBuilder();
result.AppendLine("210 Misc " + album.GN_ID + " CD database entry follows (until terminating `.')");
result.AppendLine("DISCID=" + album.GN_ID);
result.AppendLine("DTITLE=" + album.ARTIST + " / " + album.TITLE);
result.AppendLine("DYEAR=" + album.DATE);
result.AppendLine("DGENRE=" + album.GENRE.Value);
for (int i = 0; i < album.TRACK.Length; i++)
{
string title = album.TRACK[i].TITLE;
if (string.IsNullOrWhiteSpace(album.TRACK[i].ARTIST) == false)
{
title = album.TRACK[i].ARTIST + " / " + title;
}
result.AppendLine("TTITLE" + i + "=" + title);
}
result.AppendLine("EXTD=");
for (int i = 0; i < album.TRACK.Length; i++)
{
result.AppendLine("EXTT" + i + "=");
}
result.AppendLine("PLAYORDER=");
result.AppendLine(".");
return(result.ToString());
}
