roadie/Roadie.Api.Library/Utility/M3uHelper.cs

using Roadie.Library.Models;
using System.Collections.Generic;

namespace Roadie.Library.Utility
{
    /// <summary>
    ///     Helper to work with M3U files
    ///     <seealso cref="https://en.wikipedia.org/wiki/M3U" />
    /// </summary>
    public static class M3uHelper
    {
        /// <summary>
        ///     For the given collection of tracks generate a M3U file in a single string
        /// </summary>
        public static string M3uContentForTracks(IEnumerable<TrackList> tracks)
        {
            var result = new List<string>
            {
                "#EXTM3U"
            };
            foreach (var track in tracks)
            {
                result.Add($"#EXTINF:{track.Duration},{track.Artist.Artist.Text} - {track.Track.Text}");
                result.Add($"{track.TrackPlayUrl}");
                result.Add(string.Empty);
            }

            return string.Join("\r\n", result);
        }
    }
}