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/*
* Copyright (C) 2011 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by Alex Launi <alex.launi@canonical.com>
*
*/
using Gee;
using GLib;
using Sqlite;
namespace Unity.MusicLens {
public errordomain DatabaseError {
FAILED_TO_OPEN
}
/**
* Abstracts talking to the banshee collection database
*/
public class BansheeCollection : Object
{
private const int MAX_RESULTS = 100;
private Database db;
public BansheeCollection () throws DatabaseError
{
int rc = Database.open ("%s/banshee-1/banshee.db".printf (Environment.get_user_config_dir ()), out db);
if (rc != Sqlite.OK) {
printerr ("failed to open db, %d, %s\n", rc, db.errmsg ());
throw new DatabaseError.FAILED_TO_OPEN ("Failed to open banshee database");
}
}
/**
* Performs a search on the banshee db
*/
public void search (LensSearch search,
SearchType search_type,
GLib.List<FilterParser>? filters = null,
int max_results = -1,
int category_override = -1)
{
const int TRACK_TITLE = 0;
const int TRACK_URI = 1;
const int TRACK_MIMETYPE = 2;
const int ALBUM_TITLE = 3;
const int ALBUM_ARTWORKID = 4;
const int ARTIST_NAME = 5;
int rc = 0;
Statement stmt;
var results_model = search.results_model;
var helper_model = results_model;
if (category_override >= 0)
{
helper_model = new Dee.SequenceModel ();
helper_model.set_schema_full (results_model.get_schema ());
}
// use a tree set to ensure we don't duplicate albums
TreeSet<string> albums = new TreeSet<string> ();
string filters_sql = build_sql_from_filters (filters);
// BUILD SQL STATEMENT
string sql = """SELECT CoreTracks.Title, CoreTracks.Uri, CoreTracks.MimeType, CoreAlbums.Title, CoreAlbums.ArtworkID, CoreArtists.Name FROM CoreTracks
CROSS JOIN CoreArtists, CoreAlbums
WHERE CoreArtists.ArtistID = CoreTracks.ArtistID
AND CoreAlbums.AlbumID = CoreTracks.AlbumID
AND CoreTracks.PrimarySourceID = 1
AND ((CoreArtists.NameLowered LIKE '%%%s%%' ESCAPE '\'
AND CoreArtists.NameLowered IS NOT NULL)
OR (CoreAlbums.TitleLowered LIKE '%%%s%%' ESCAPE '\'
AND CoreAlbums.TitleLowered IS NOT NULL)
OR (CoreTracks.TitleLowered LIKE '%%%s%%' ESCAPE '\'
AND CoreTracks.TitleLowered IS NOT NULL)
)
%s
ORDER BY CoreTracks.Score DESC
LIMIT 0, %d;""".printf (search.search_string,
search.search_string,
search.search_string,
filters_sql,
max_results == -1 ? MAX_RESULTS : max_results);
rc = execute_sql (sql, out stmt);
if (stmt == null)
return;
do {
rc = stmt.step ();
switch (rc) {
case Sqlite.DONE:
break;
case Sqlite.ROW:
string artwork_path = get_album_artwork_path (stmt.column_text (ALBUM_ARTWORKID));
if (artwork_path == null || artwork_path == "" || !FileUtils.test(artwork_path, FileTest.EXISTS))
artwork_path = ALBUM_MISSING_ICON_PATH;
Track track = new Track ();
track.title = stmt.column_text (TRACK_TITLE);
track.artist = stmt.column_text (ARTIST_NAME);
track.uri = stmt.column_text (TRACK_URI);
track.mime_type = stmt.column_text (TRACK_MIMETYPE);
track.artwork_path = artwork_path;
Album album = new Album ();
album.title = stmt.column_text (ALBUM_TITLE);
album.artist = stmt.column_text (ARTIST_NAME);
album.uri = "album://%s/%s".printf (album.artist, album.title);
album.artwork_path = artwork_path;
uint category_id = Category.SONGS;
if (category_override >= 0)
category_id = category_override;
helper_model.append (track.uri, artwork_path, category_id,
track.mime_type, track.title, track.artist,
track.uri);
if (albums.add (album.artist + album.title)) {
StringBuilder uri_list_builder = new StringBuilder ();
foreach (string uri in get_track_uris (album)) {
uri_list_builder.append ("'");
uri_list_builder.append (uri);
uri_list_builder.append ("' ");
}
category_id = Category.ALBUMS;
if (category_override >= 0)
category_id = category_override;
results_model.append (album.uri, album.artwork_path, category_id,
"audio/mp3", album.title, album.artist,
uri_list_builder.str);
}
break;
default:
break;
}
} while (rc == Sqlite.ROW);
if (helper_model == results_model) return;
// we need to do this because the dash doesn't care about position
// of a newly added row in the model - it just appends it
var iter = helper_model.get_first_iter ();
var last = helper_model.get_last_iter ();
while (iter != last)
{
var row = helper_model.get_row (iter);
results_model.append_row (row);
iter = helper_model.next (iter);
}
}
/**
* Computes path for album artwork.
*/
private string get_album_artwork_path (string artwork_id)
{
string album_art_dir = "%s/media-art/".printf (Environment.get_user_cache_dir ());
string artwork_path = "%s/%s.jpg".printf (album_art_dir, artwork_id);
return artwork_path;
}
/**
* Creates Track object out of single row of Statement result data.
*/
private Track get_track (Statement stmt)
{
const int TRACK_URI = 0;
const int TRACK_TITLE = 1;
const int ARTIST_NAME = 2;
const int ALBUM_TITLE = 3;
const int ALBUM_ARTWORKID = 4;
const int TRACK_MIMETYPE = 5;
const int TRACK_GENRE = 6;
const int TRACK_NUMBER = 7;
const int TRACK_YEAR = 8;
const int TRACK_PLAYCOUNT = 9;
const int TRACK_DURATION = 10;
Track track = new Track();
track.uri = stmt.column_text (TRACK_URI);
track.title = stmt.column_text (TRACK_TITLE);
track.artist = stmt.column_text (ARTIST_NAME);
track.album = stmt.column_text (ALBUM_TITLE);
track.artwork_path = get_album_artwork_path (stmt.column_text (ALBUM_ARTWORKID));
track.mime_type = stmt.column_text (TRACK_MIMETYPE);
track.genre = stmt.column_text (TRACK_GENRE);
track.track_number = stmt.column_int (TRACK_NUMBER);
track.year = stmt.column_int (TRACK_YEAR);
track.play_count = stmt.column_int (TRACK_PLAYCOUNT);
track.duration = stmt.column_int (TRACK_DURATION);
return track;
}
/**
* Returns single track.
*/
public Track? get_album_track (string uri)
{
string sql = "SELECT
CoreTracks.Uri,
CoreTracks.Title,
CoreArtists.Name,
CoreAlbums.Title,
CoreAlbums.ArtworkID,
CoreTracks.MimeType,
CoreTracks.Genre,
CoreTracks.TrackNumber,
CoreTracks.Year,
CoreTracks.PlayCount,
CoreTracks.Duration
FROM CoreTracks
CROSS JOIN CoreAlbums, CoreArtists
WHERE CoreTracks.URI IS ?
AND CoreArtists.ArtistID = CoreTracks.ArtistID
AND CoreAlbums.AlbumID = CoreTracks.AlbumID";
Statement stmt;
int rc = execute_sql (sql, out stmt);
stmt.bind_text (1, uri);
rc = stmt.step ();
if (rc == Sqlite.ROW)
{
return get_track (stmt);
}
return null;
}
/**
* Returns all tracks of an album.
*/
public SList<Track> get_album_tracks_detailed (string album_title, string album_artist)
{
string sql = "SELECT
CoreTracks.Uri,
CoreTracks.Title,
CoreArtists.Name,
CoreAlbums.Title,
CoreAlbums.ArtworkID,
CoreTracks.MimeType,
CoreTracks.Genre,
CoreTracks.TrackNumber,
CoreTracks.Year,
CoreTracks.PlayCount,
CoreTracks.Duration
FROM CoreTracks
CROSS JOIN CoreAlbums, CoreArtists
WHERE CoreArtists.ArtistID = CoreTracks.ArtistID
AND CoreAlbums.AlbumID = CoreTracks.AlbumID
AND CoreAlbums.Title IS ?
AND CoreArtists.Name IS ?
AND CoreTracks.URI IS NOT NULL
ORDER BY CoreTracks.TrackNumber ASC";
Statement stmt;
int rc = execute_sql (sql, out stmt);
stmt.bind_text (1, album_title);
stmt.bind_text (2, album_artist);
SList<Track> tracks = new SList<Track>();
do {
rc = stmt.step ();
switch (rc) {
case Sqlite.DONE:
break;
case Sqlite.ROW:
tracks.append (get_track (stmt));
break;
default:
break;
}
} while (rc == Sqlite.ROW);
return tracks;
}
/**
* returns an array like {uri://, uri://, ...}
*/
public string[] get_track_uris (Album album)
{
const int URI_COLUMN = 0;
int rc;
Statement stmt;
string sql = "SELECT CoreTracks.Uri
FROM CoreTracks
CROSS JOIN CoreAlbums, CoreArtists
WHERE CoreArtists.ArtistID = CoreTracks.ArtistID
AND CoreAlbums.AlbumID = CoreTracks.AlbumID
AND CoreAlbums.Title IS '%s'
AND CoreArtists.Name IS '%s'
AND CoreTracks.URI IS NOT NULL
ORDER BY CoreTracks.TrackNumber ASC".printf (album.title, album.artist);
rc = execute_sql (sql, out stmt);
ArrayList<string> uris = new ArrayList<string> ();
do {
rc = stmt.step ();
switch (rc) {
case Sqlite.DONE:
break;
case Sqlite.ROW:
uris.add (stmt.column_text (URI_COLUMN));
break;
default:
break;
}
} while (rc == Sqlite.ROW);
return uris.to_array ();
}
/**
* returns a string like "AND (Table.Column IS filter OR Table.OtherCol IS filter2)
* AND (Table.OtherColAgain IS AnotherFilter)"
*/
private string build_sql_from_filters (GLib.List<FilterParser> filters)
{
if (filters == null || filters.length () == 0)
return "";
var builder = new StringBuilder ();
foreach (FilterParser parser in filters)
{
BansheeFilterParser bparser;
if (parser is GenreFilterParser)
bparser = new BansheeGenreFilterParser (parser as GenreFilterParser);
else if (parser is DecadeFilterParser)
bparser = new BansheeDecadeFilterParser (parser as DecadeFilterParser);
else
{
warning ("Recieved an unimplemented filter type");
continue;
}
string parsed = bparser.parse ();
if (parsed == null || parsed == "")
continue;
builder.append (" AND ");
builder.append (parsed);
}
builder.append (" ");
return builder.str;
}
private int execute_sql (string sql, out Statement stmt)
{
int rc;
debug ("preparing to execute sql %s\n", sql);
if ((rc = db.prepare_v2 (sql, -1, out stmt, null)) == 1)
{
warning ("SQL Error: %d, %s\n", rc, db.errmsg ());
}
return rc;
}
}
}
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