public FileInfo GetCover(TrackInfo info)
{
string hash = GetMd5Hash(info.Artist + ":" + info.Title);
string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
"NowPlayingKiosk", "Cache", hash.Substring(0, 2));
Directory.CreateDirectory(path);
string filename = Path.Combine(path, hash + ".png");
FileInfo file = new FileInfo(filename);
if (file.Exists)
{
// Get from cache
return file;
}
else
{
Response resp = MakeRequest(info);
if (resp != null)
{
Item item = ProcessResponse(resp);
if (item != null)
{
DownloadImage(item, file);
return file;
}
}
}
return GetDefaultCover();
}
public TrackInfo WhatIsNowPlaying()
{
// Get the process
Process[] processList = Process.GetProcessesByName("spotify");
string wantedPrefix = "Spotify - ";
foreach (Process process in processList)
{
if (!String.IsNullOrEmpty(process.MainWindowTitle) && process.MainWindowTitle.Equals("Spotify"))
{
// Nothing playing right now
lastPlayed = null;
return null;
}
else if (!String.IsNullOrEmpty(process.MainWindowTitle) && process.MainWindowTitle.StartsWith(wantedPrefix))
{
// Spotify is playing something
string windowTitle = process.MainWindowTitle.Substring(wantedPrefix.Length);
TrackInfo nowPlaying = null;
if (windowTitle != null)
{
// For example "Foo Fighters – Monkey Wrench"
int idx = windowTitle.IndexOf('–');
if (idx != -1)
{
string artist = windowTitle.Substring(0, idx).Trim();
string title = windowTitle.Substring(idx + 1).Trim();
nowPlaying = new TrackInfo(artist, title);
}
}
lastPlayed = nowPlaying;
return nowPlaying;
}
else if (String.IsNullOrEmpty(process.MainWindowTitle))
{
return lastPlayed;
}
}
return null;
}
private Response MakeRequest(TrackInfo info)
{
try
{
string query = "q=artist:" + WebUtility.UrlEncode(info.Artist) + "+track:" + WebUtility.UrlEncode(info.Title);
string market = CultureInfo.InstalledUICulture.TwoLetterISOLanguageName;
string url = "https://api.spotify.com/v1/search?" + query + "&type=track&market=" + market;
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
throw new Exception(String.Format(
"Server error (HTTP {0}: {1}).",
response.StatusCode,
response.StatusDescription));
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Response));
object objResponse = jsonSerializer.ReadObject(response.GetResponseStream());
Response jsonResponse
= objResponse as Response;
return jsonResponse;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return null;
}
}
