+/*
+ * SomePlayer - An alternate music player for Maemo 5
+ * Copyright (C) 2010 Nikolay (somebody) Tischenko <niktischenko@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
#include "dbstorage.h"
+#include <QSqlQuery>
+#include <QSqlResult>
+#include <QDebug>
+
+using namespace SomePlayer::Storage;
+using namespace SomePlayer::DataObjects;
+
+DbStorage::DbStorage(QString path) {
+ QString dbname = path+_DATABASE_NAME_;
+ db = QSqlDatabase::addDatabase("QSQLITE");
+ db.setDatabaseName(dbname);
+ if (!db.open()) {
+ // throw big exception
+ }
+ // create database structure
+ _create_database_structure();
+ _prepare_queries();
+}
+
+void DbStorage::_prepare_queries() {
+ _get_artists_query = new QSqlQuery(db);
+ _get_artists_query->prepare("SELECT name FROM artist ORDER BY name");
+
+ _get_albums_for_artist_query = new QSqlQuery(db);
+ _get_albums_for_artist_query->prepare("SELECT name FROM album WHERE artist_id in (SELECT id from artist WHERE UPPER(name) = UPPER(:name)) ORDER BY name;");
+
+ _get_tracks_for_album_query = new QSqlQuery(db);
+ _get_tracks_for_album_query->prepare("SELECT id, title, source, count, length FROM tracks WHERE artist_id IN "
+ "(SELECT id FROM artist WHERE UPPER(name) = UPPER(:artist_name)) AND album_id IN "
+ "(SELECT id FROM album WHERE UPPER(name) = UPPER(:album_name));");
+
+ _get_favorites_query = new QSqlQuery(db);
+ _get_favorites_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
+ "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
+ "tracks JOIN artist ON tracks.artist_id = artist.id) "
+ "JOIN album ON album_id = album.id WHERE track_id IN "
+ "(SELECT track_id FROM favorites);");
+
+ _get_most_played_query = new QSqlQuery(db);
+ _get_most_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
+ "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
+ "tracks JOIN artist ON tracks.artist_id = artist.id) "
+ "JOIN album ON album_id = album.id ORDER BY count DESC "
+ "LIMIT 0, :max");
+
+ _get_never_played_query = new QSqlQuery(db);
+ _get_never_played_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
+ "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
+ "tracks JOIN artist ON tracks.artist_id = artist.id) "
+ "JOIN album ON album_id = album.id "
+ "WHERE count = 0");
+
+ _get_recently_added_query = new QSqlQuery(db);
+ _get_recently_added_query->prepare("SELECT track_id as id, title, artist, album.name as album, source, count, length FROM "
+ "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, source, tracks.album_id, length FROM "
+ "tracks JOIN artist ON tracks.artist_id = artist.id) "
+ "JOIN album ON album_id = album.id "
+ "WHERE track_id IN "
+ "(SELECT track_id FROM adding_date ORDER BY date DESC LIMIT 0, :max)");
+
+ _get_track_count = new QSqlQuery(db);
+ _get_track_count->prepare("SELECT count from tracks WHERE id = :id");
+
+ _get_track_by_source_query = new QSqlQuery(db);
+ _get_track_by_source_query->prepare("SELECT track_id AS id, title, artist, album.name AS album, source, count, length FROM "
+ "(SELECT tracks.id AS track_id, artist.name AS artist, title, count, tracks.album_id, length FROM "
+ "tracks JOIN artist ON tracks.artist_id = artist.id AND source = :source) "
+ "JOIN album ON album_id = album.id LIMIT 1");
+
+ _check_artist_query = new QSqlQuery(db);
+ _check_artist_query->prepare("SELECT id FROM artist WHERE UPPER(name) = UPPER(:name)");
+
+ _check_album_query = new QSqlQuery(db);
+ _check_album_query->prepare("SELECT id FROM album WHERE UPPER(name) = UPPER(:name) AND artist_id = :artist_id");
+
+ _check_track_query = new QSqlQuery(db);
+ _check_track_query->prepare("SELECT id FROM tracks WHERE source = :source");
+
+ _insert_artist_query = new QSqlQuery(db);
+ _insert_artist_query->prepare("INSERT INTO artist (name) values (:name)");
+
+ _insert_album_query = new QSqlQuery(db);
+ _insert_album_query->prepare("INSERT INTO album (name, artist_id) values (:name, :artist_id)");
+
+ _insert_track_query = new QSqlQuery(db);
+ _insert_track_query->prepare("INSERT INTO tracks (title, artist_id, album_id, source, length) values (:title, :artist_id, :album_id, :source, :length)");
+
+ _insert_date_query = new QSqlQuery(db);
+ _insert_date_query->prepare("INSERT INTO adding_date (track_id, date) values (:track_id, strftime('%s', 'now'))");
+
+ _insert_favorites_query = new QSqlQuery(db);
+ _insert_favorites_query->prepare("INSERT INTO favorites (track_id) values (:track_id)");
+
+ _update_track_count_query = new QSqlQuery(db);
+ _update_track_count_query->prepare("UPDATE tracks SET count = :count where id = :id");
+
+ _remove_track_query = new QSqlQuery(db);
+ _remove_track_query->prepare("DELETE FROM tracks WHERE id = :id");
+}
+
+void DbStorage::_create_database_structure() {
+ QSqlQuery *query = new QSqlQuery(db);
+ query->exec("create table artist (id integer primary key, "
+ "name text "
+ ");");
+ query->exec("create table album (id integer primary key, "
+ "artist_id integer, "
+ "name text, "
+ "foreign key(artist_id) references arist(id) "
+ ");");
+ query->exec("create table tracks (id integer primary key, "
+ "artist_id integer, "
+ "album_id integer, "
+ "title text, "
+ "source text, "
+ "count integer default 0, "
+ "length integer default 0, "
+ "foreign key(artist_id) references artist(id), "
+ "foreign key(album_id) references album(id) "
+ ");");
+ query->exec("create table favorites (track_id integer, "
+ "foreign key(track_id) references tracks(id) "
+ ");");
+ query->exec("create table adding_date (track_id integer, "
+ "date integer, "
+ "foreign key(track_id) references tracks(id) "
+ ");");
+}
+
+DbStorage::~DbStorage() {
+ delete _get_albums_for_artist_query;
+ delete _get_artists_query;
+ delete _get_favorites_query;
+ delete _get_most_played_query;
+ delete _get_never_played_query;
+ delete _get_recently_added_query;
+ delete _get_tracks_for_album_query;
+ delete _get_track_by_source_query;
+ delete _check_album_query;
+ delete _check_artist_query;
+ delete _check_track_query;
+ delete _insert_album_query;
+ delete _insert_artist_query;
+ delete _insert_date_query;
+ delete _insert_track_query;
+ delete _insert_favorites_query;
+ delete _update_track_count_query;
+ delete _remove_track_query;
+ db.close();
+}
+
+QList<QString> DbStorage::getArtists() {
+ QList<QString> artists;
+ QSqlQuery *query = _get_artists_query;
+ query->exec();
+ while (query->next()) {
+ QString name = query->value(0).toString();
+ artists.append(name);
+ }
+ return artists;
+}
+
+QList<QString> DbStorage::getAlbumsForArtist(QString artist) {
+ QList<QString> albums;
+ QSqlQuery *query = _get_albums_for_artist_query;
+ query->bindValue(":name", artist);
+ query->exec();
+ while (query->next()) {
+ QString name = query->value(0).toString();
+ albums.append(name);
+ }
+ return albums;
+}
+
+QList<Track> DbStorage::getTracksForAlbum(QString album, QString artist) {
+ QList<Track> tracks;
+ QSqlQuery *query = _get_tracks_for_album_query;
+ query->bindValue(":artist_name", artist);
+ query->bindValue(":album_name", album);
+ query->exec();
+
+ while (query->next()) {
+ int id = query->value(0).toInt();
+ QString title = query->value(1).toString();
+ QString source = query->value(2).toString();
+ int count = query->value(3).toInt();
+ int length = query->value(4).toInt();
+ TrackMetadata meta (title, artist, album, length);
+ Track track(id, meta, source);
+ track.setCount(count);
+ tracks.append(track);
+ }
+
+ return tracks;
+}
+
+Playlist DbStorage::getFavorites() {
+ Playlist playlist;
+ QSqlQuery *query = _get_favorites_query;
+ query->exec();
+ while(query->next()) {
+ int id = query->value(0).toInt();
+ QString title = query->value(1).toString();
+ QString artist = query->value(2).toString();
+ QString album = query->value(3).toString();
+ QString source = query->value(4).toString();
+ int count = query->value(5).toInt();
+ int length = query->value(6).toInt();
+ TrackMetadata meta(title, artist, album, length);
+ Track track(id, meta, source);
+ track.setCount(count);
+ playlist.addTrack(track);
+ playlist.setName("Favorites");
+ }
+ return playlist;
+}
+
+Playlist DbStorage::getMostPlayed() {
+ Playlist playlist;
+ QSqlQuery *query = _get_most_played_query;
+ query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
+ query->exec();
+ while (query->next()) {
+ int id = query->value(0).toInt();
+ QString title = query->value(1).toString();
+ QString artist = query->value(2).toString();
+ QString album = query->value(3).toString();
+ QString source = query->value(4).toString();
+ int count = query->value(5).toInt();
+ int length = query->value(6).toInt();
+ TrackMetadata meta(title, artist, album, length);
+ Track track(id, meta, source);
+ track.setCount(count);
+ playlist.addTrack(track);
+ playlist.setName("Most popular");
+ }
+ return playlist;
+}
+
+Playlist DbStorage::getNeverPlayed() {
+ Playlist playlist;
+ QSqlQuery *query = _get_never_played_query;
+ query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
+ query->exec();
+ while (query->next()) {
+ int id = query->value(0).toInt();
+ QString title = query->value(1).toString();
+ QString artist = query->value(2).toString();
+ QString album = query->value(3).toString();
+ QString source = query->value(4).toString();
+ int count = query->value(5).toInt();
+ int length = query->value(6).toInt();
+ TrackMetadata meta(title, artist, album, length);
+ Track track(id, meta, source);
+ track.setCount(count);
+ playlist.addTrack(track);
+ playlist.setName("Never played");
+ }
+ return playlist;
+}
+
+Playlist DbStorage::getRecentlyAdded() {
+ Playlist playlist;
+ QSqlQuery *query = _get_recently_added_query;
+ query->bindValue(":max", _DYNAMIC_PLAYLIST_MAX_COUNT_);
+ query->exec();
+ while (query->next()) {
+ int id = query->value(0).toInt();
+ QString title = query->value(1).toString();
+ QString artist = query->value(2).toString();
+ QString album = query->value(3).toString();
+ QString source = query->value(4).toString();
+ int count = query->value(5).toInt();
+ int length = query->value(6).toInt();
+ TrackMetadata meta(title, artist, album, length);
+ Track track(id, meta, source);
+ track.setCount(count);
+ playlist.addTrack(track);
+ playlist.setName("Recently added");
+ }
+ return playlist;
+}
+
+void DbStorage::removeTrack(Track track) {
+ int id = track.id();
+ QSqlQuery *query = new QSqlQuery(db);
+ query->prepare("DELETE FROM tracks WHERE id = :id;");
+ query->bindValue(":id", id);
+ query->exec();
+ query->prepare("DELETE FROM favorites WHERE track_id = :id;");
+ query->bindValue(":id", id);
+ query->exec();
+ query->prepare("DELETE FROM adding_date WHERE id = :id;");
+ query->bindValue(":id", id);
+ query->exec();
+}
+
+void DbStorage::addTrack(Track track) {
+ QString title = track.metadata().title();
+ QString artist = track.metadata().artist();
+ QString album = track.metadata().album();
+ QString source = track.source();
+ int artist_id = _check_add_artist(artist);
+ int album_id = _check_add_album(album, artist_id);
+ if (artist_id == -1 || album_id == -1) {
+ qDebug () << "one";
+ //big bang
+ return;
+ }
+ QSqlQuery *query = _check_track_query;
+ query->bindValue(":source", source);
+ query->exec();
+ if (query->next()) {
+ qDebug () << "two";
+ // already in datebase, skip
+ return;
+ }
+ query = _insert_track_query;
+ query->bindValue(":title", title);
+ query->bindValue(":artist_id", artist_id);
+ query->bindValue(":album_id", album_id);
+ query->bindValue(":source", source);
+ query->bindValue(":length", track.metadata().length());
+ if (query->exec()) {
+ //ok
+ query = _check_track_query;
+ query->bindValue(":source", source);
+ query->exec();
+ if (query->next()) {
+ int id = query->value(0).toInt();
+ query = _insert_date_query;
+ query->bindValue(":track_id", id);
+ if (query->exec()) {
+ // ok
+ } else {
+ qDebug () << "three";
+ // big bang
+ }
+ } else {
+ qDebug () << "four";
+ // big bang
+ }
+ } else {
+ qDebug () << "five";
+ // big bang
+ }
+}
+
+void DbStorage::addToFavorites(Track track) {
+ QSqlQuery *query = _insert_favorites_query;
+ query->bindValue(":track_id", track.id());
+ query->exec();
+}
+
+void DbStorage::updateTrackCount(Track track) {
+ QSqlQuery *query = _get_track_count;
+ query->bindValue(":id", track.id());
+ query->exec();
+ if (query->next()) {
+ int count = query->value(0).toInt();
+ query = _update_track_count_query;
+ query->bindValue(":count", count+1);
+ query->bindValue(":id", track.id());
+ query->exec();
+ }
+}
+
+Track DbStorage::updateTrack(Track track) {
+ QSqlQuery *query = _remove_track_query;
+ query->bindValue(":id", track.id());
+ if (!query->exec()) {
+ qDebug() << "Problem here";
+ }
+ addTrack(track);
+ query = _get_track_by_source_query;
+ query->bindValue(":source", track.source());
+ query->exec();
+ if (query->next()) {
+ qDebug() << "enter";
+ int id = query->value(0).toInt();
+ qDebug() << id;
+ QString title = query->value(1).toString();
+ qDebug() << title;
+ QString artist = query->value(2).toString();
+ qDebug() << artist;
+ QString album = query->value(3).toString();
+ qDebug() << album;
+ QString source = query->value(4).toString();
+ qDebug() << source;
+ int count = query->value(5).toInt();
+ int length = query->value(6).toInt();
+ TrackMetadata meta(title, artist, album, length);
+ Track ntrack(id, meta, source);
+ ntrack.setCount(count);
+ return ntrack;
+ }
+ return track;
+}
+
+int DbStorage::_check_add_artist(QString artist) {
+ QSqlQuery *query = _check_artist_query;
+ query->bindValue(":name", artist);
+ query->exec();
+ if (query->next()) {
+ int id = query->value(0).toInt();
+ return id;
+ } else {
+ query = _insert_artist_query;
+ query->bindValue(":name", artist);
+ if (query->exec()) {
+ return _check_add_artist(artist);
+ } else {
+ // big bang
+ return -1;
+ }
+ }
+}
+
+int DbStorage::_check_add_album(QString album, int artist_id) {
+ QSqlQuery *query = _check_album_query;
+ query->bindValue(":name", album);
+ query->bindValue(":artist_id", artist_id);
+ query->exec();
+ if (query->next()) {
+ int id = query->value(0).toInt();
+ return id;
+ } else {
+ query = _insert_album_query;
+ query->bindValue(":name", album);
+ query->bindValue(":artist_id", artist_id);
+ if (query->exec()) {
+ return _check_add_album(album, artist_id);
+ } else {
+ // big bang
+ return -1;
+ }
+ }
+}
projects / someplayer / blobdiff