LibTVRefCommonPortable/Utils/MediaContentUtils.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using System.Threading.Tasks;
   6 using Xamarin.Forms;
   7
   8 namespace LibTVRefCommonPortable.Utils
   9 {
  10     /// <summary>
  11     /// A class provides media contents and related functions.
  12     /// </summary>
  13     public class MediaContentUtils
  14     {
  15         /// <summary>
  16         /// A instance of IMediaContentAPIs port.
  17         /// </summary>
  18         private static IMediaContentAPIs mediaContentAPIs;
  19
  20         /// <summary>
  21         /// A instance of MediaContentUtils
  22         /// </summary>
  23         private static readonly MediaContentUtils instance = new MediaContentUtils();
  24
  25         /// <summary>
  26         /// A property of MediaContentUtils instance.
  27         /// </summary>
  28         public static MediaContentUtils Instance
  29         {
  30             get
  31             {
  32                 return instance;
  33             }
  34         }
  35
  36         /// <summary>
  37         /// A unit testing stub for MediaContentUtils
  38         /// </summary>
  39         private class TestStub : IMediaContentAPIs
  40         {
  41             public IEnumerable<RecentlyPlayedMedia> GetRecentlyPlayedMedia(int limitation)
  42             {
  43                 IList<RecentlyPlayedMedia> recentlyPlayed = new List<RecentlyPlayedMedia>();
  44
  45                 recentlyPlayed.Add(new RecentlyPlayedMedia
  46                 {
  47                     MediaId = "id/recent_media1",
  48                     ThumbnailPath = "thumbnail/recent_media1",
  49                     FilePath = "filepath/recent_media1",
  50                     DisplayName = "recent_media1",
  51                     PlayedAt = new DateTime(2017, 05, 22),
  52                 });
  53
  54                 recentlyPlayed.Add(new RecentlyPlayedMedia
  55                 {
  56                     MediaId = "invalid.recent_media2.nofilepath",
  57                     ThumbnailPath = "invalid.recent_media2.nofilepath",
  58                     DisplayName = "invalid.recent_media2.nofilepath",
  59                     PlayedAt = new DateTime(2017, 2, 26),
  60                 });
  61
  62                 recentlyPlayed.Add(new RecentlyPlayedMedia
  63                 {
  64                     MediaId = "id/recent_media3.nothumbnail",
  65                     FilePath = "filepath/recent_media3.nothumbnail",
  66                     DisplayName = "recent_media3.nothumbnail",
  67                     PlayedAt = new DateTime(2016, 4, 25),
  68                 });
  69
  70                 recentlyPlayed.Add(new RecentlyPlayedMedia
  71                 {
  72                     MediaId = "id/recent_media4",
  73                     ThumbnailPath = "thumbnail/recent_media4",
  74                     FilePath = "filepath/recent_media4",
  75                     DisplayName = "recent_media4",
  76                     PlayedAt = new DateTime(2015, 12, 7),
  77                 });
  78
  79                 recentlyPlayed.Add(new RecentlyPlayedMedia
  80                 {
  81                     MediaId = "id/recent_media5",
  82                     ThumbnailPath = "thumbnail/recent_media5",
  83                     FilePath = "filepath/recent_media5",
  84                     DisplayName = "recent_media5",
  85                     PlayedAt = new DateTime(2015, 10, 1),
  86                 });
  87
  88                 recentlyPlayed.Add(new RecentlyPlayedMedia
  89                 {
  90                     MediaId = "id/recent_media6",
  91                     ThumbnailPath = "thumbnail/recent_media6",
  92                     FilePath = "filepath/recent_media6",
  93                     DisplayName = "recent_media6",
  94                     PlayedAt = new DateTime(2015, 3, 3),
  95                 });
  96
  97                 recentlyPlayed.Add(new RecentlyPlayedMedia
  98                 {
  99                     MediaId = "id/recent_media7",
 100                     ThumbnailPath = "thumbnail/recent_media7",
 101                     FilePath = "filepath/recent_media7",
 102                     DisplayName = "recent_media8",
 103                     PlayedAt = new DateTime(2014, 11, 17),
 104                 });
 105
 106                 return recentlyPlayed;
 107             }
 108         }
 109
 110         /// <summary>
 111         /// A Constructor
 112         /// </summary>
 113         private MediaContentUtils()
 114         {
 115             mediaContentAPIs = new TestStub();
 116
 117             try
 118             {
 119                 if (DependencyService.Get<IMediaContentAPIs>() != null)
 120                 {
 121                     mediaContentAPIs = DependencyService.Get<IMediaContentAPIs>();
 122                 }
 123             }
 124             catch (InvalidOperationException e)
 125             {
 126                 DebuggingUtils.Err(e.Message);
 127             }
 128         }
 129
 130         /// <summary>
 131         /// A method provides media playing history.
 132         /// </summary>
 133         /// <param name="limitation">A number of getting media playing history</param>
 134         /// <returns>A list of played medias.</returns>
 135         public IEnumerable<RecentlyPlayedMedia> GetRecentlyPlayedMedia(int limitation)
 136         {
 137             return mediaContentAPIs.GetRecentlyPlayedMedia(limitation);
 138         }
 139
 140     }
 141 }