public IList<CDDBEntry> GetAlbumMatches()
{
// initialise the output list
IList<CDDBEntry> albums = new List<CDDBEntry>();
// check the CD first
if (CheckCDDrive())
{
// get the information from the drive to make the match
string queryString = Drive.GetCDDBQuery();
// build up the command string
var commandBuilder = new StringBuilder();
commandBuilder.Append("?");
commandBuilder.Append(FreeDBConstants.COMMAND);
commandBuilder.Append(FreeDBConstants.COMMAND_QUERY);
commandBuilder.Append("+");
commandBuilder.Append(queryString);
commandBuilder.Append("&");
commandBuilder.Append(GenerateHello());
commandBuilder.Append("&");
commandBuilder.Append(GenerateProtocol());
// make the URL to use
var urlBuilder = new StringBuilder();
urlBuilder.Append(FreeDBConstants.URL_FREEDB_MAIN);
urlBuilder.Append(FreeDBConstants.URL_HTTP_ACCESS);
// hit up FreeDB for the result
IList<string> freeDBResponse = Query(urlBuilder.ToString(), commandBuilder.ToString());
// parse the query
if (freeDBResponse.Count > 0)
{
// extract the response code
ResponseCode responseCode = ExtractResponseCode(freeDBResponse[0]);
switch (responseCode)
{
case ResponseCode.RESPONSE_CODE_DEFAULT:
_log.Error("Problem querying album using command: " + commandBuilder);
break;
case ResponseCode.RESPONSE_CODE_200:
case ResponseCode.RESPONSE_CODE_210:
_log.Debug("Found album/s");
// break up each of the results
foreach (string responseLine in freeDBResponse)
{
string[] lineSegments = responseLine.Split(new[] {' '});
string genre = lineSegments[1];
string discId = lineSegments[2];
// grab each of the artist
var artistBuilder = new StringBuilder();
int index = 3;
for (int i = index; i < lineSegments.Count(); i++)
{
// increment the index in the array
index++;
// check it's not the artist/title delimiter
if (lineSegments[i] != "/")
{
artistBuilder.Append(lineSegments[i]);
artistBuilder.Append(" ");
}
// if it is, stop now
else
{
break;
}
}
string artist = artistBuilder.ToString().Trim();
// grab the title
var titleBuilder = new StringBuilder();
for (int i = index; i < lineSegments.Count(); i++)
{
titleBuilder.Append(lineSegments[i]);
titleBuilder.Append(" ");
}
string title = titleBuilder.ToString().Trim();
// create the output object for this listing
var result = new CDDBEntry(genre, discId, artist, title);
// and add it to the list
albums.Add(result);
}
break;
default:
_log.Error("Response came back we weren't expecting, handle it");
break;
}
}
Drive.UnLockCD();
}
return albums;
}
public Album GetTracks(CDDBEntry cddbResult)
{
// initialise the album to output
Album newAlbum = null;
// build up the command string
var commandBuilder = new StringBuilder();
commandBuilder.Append("?");
commandBuilder.Append(FreeDBConstants.COMMAND);
commandBuilder.Append(FreeDBConstants.COMMAND_READ);
commandBuilder.Append("+");
commandBuilder.Append(cddbResult.Genre);
commandBuilder.Append("+");
commandBuilder.Append(cddbResult.DiscID);
commandBuilder.Append("&");
commandBuilder.Append(GenerateHello());
commandBuilder.Append("&");
commandBuilder.Append(GenerateProtocol());
// make the URL to use
var urlBuilder = new StringBuilder();
urlBuilder.Append(FreeDBConstants.URL_FREEDB_MAIN);
urlBuilder.Append(FreeDBConstants.URL_HTTP_ACCESS);
// hit up FreeDB for the result
IList<string> freeDBResponse = Query(urlBuilder.ToString(), commandBuilder.ToString());
// parse the query
if (freeDBResponse.Count > 0)
{
// extract the response code
ResponseCode responseCode = ExtractResponseCode(freeDBResponse[0]);
switch (responseCode)
{
case ResponseCode.RESPONSE_CODE_DEFAULT:
_log.Error("Problem querying album using command: " + commandBuilder);
break;
case ResponseCode.RESPONSE_CODE_200:
case ResponseCode.RESPONSE_CODE_210:
_log.Debug("Found track/s");
// get a hook to the DB
IDBClient db = Database.RetrieveClient();
// we'll look for an artist to attach this all to
Artist theArtist = Database.RetrieveArtistByName(db, cddbResult.ArtistName);
// TODO Check for artists, as opposed to just one
// if we don't we'll create one
if (null == theArtist)
{
theArtist = new Artist(cddbResult.ArtistName);
}
db.Close();
// we'll create an album for this with invalid data, we'll fill that out after
newAlbum = new Album(cddbResult.Title, theArtist, null, 1900, Compression.Undecided);
// a list to keep track of the track lengths in seconds
IList<int> trackLengths = new List<int>();
// keep track of the track offsets for track lengths
int lastTrackOffset = 0;
// break up each of the results
foreach (string responseLine in freeDBResponse)
{
// extract the track lengths
if (responseLine.Contains("#\t"))
{
// parse the next offset
int newOffset = Int32.Parse(responseLine.Substring(2));
// stop the first one being processed
if (lastTrackOffset > 0)
{
int seconds = (newOffset - lastTrackOffset)/75;
trackLengths.Add(seconds);
}
// store the new offset
lastTrackOffset = newOffset;
}
// extract the total number of seconds so we can calculate the last tracks length
if (responseLine.Contains("# Disc length"))
{
// parse the total length of the album in seconds
int totalLength = Int32.Parse(responseLine.Substring(15, 4));
int secondsToDate = lastTrackOffset/75;
// extract the length of the last track from this to find out the length of the final track
int lastTrackLength = totalLength - secondsToDate;
// add this to the lengths
trackLengths.Add(lastTrackLength);
}
// extract the year
if (responseLine.Contains("DYEAR"))
{
string year = responseLine.Substring(6);
newAlbum.ReleaseYear = Int32.Parse(year);
}
// extract a track
if (responseLine.Contains("TTITLE"))
{
// marker for where to parse string to
int indexOfSpace = responseLine.IndexOf('=', 6);
string numberString = responseLine.Substring(6, (indexOfSpace - 6));
int trackNumber = Int32.Parse(numberString) + 1;
string trackTitle = responseLine.Substring(indexOfSpace + 1);
// create this with no path as it's not currently set
var artists = new List<Artist>();
artists.Add(theArtist);
var newTrack = new Track(trackNumber, artists, newAlbum,
new Duration(new TimeSpan(0, 0, trackLengths[trackNumber - 1])),
trackTitle, null);
newAlbum.AddTrack(newTrack);
}
}
break;
default:
_log.Error("Response came back we weren't expecting, handle it");
break;
}
}
// pass back the resulting album
return newAlbum;
}
