added methods for managing playlists.

sync/mysql.cpp

@@ -224,9 +224,89 @@ bool MySql::updateAvailableSongs(QList<SongHeader>& list, const QString& playLis
     return true;
 }
 
+bool MySql::removeSong(const SongHeader &header){
+    if(header.id > -1){
+        QString qyer = QString("DELETE from songs where id=%0").arg(header.id);
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else if(!header.name.isEmpty() && header.size > 0){
+        QString qyer = QString("DELETE from songs where name='%0' and size=%1").arg(header.name).arg(header.size);
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else {
+        return false;
+    }
+    return true;
+}
+
+bool MySql::addPlayList(const QString &newPlayList, const QString& desc){
+    QString qyer = QString("INSERT INTO playlists(name, description) VALUE('%0','%1')").arg(newPlayList, desc);
+    if(!qyery->exec(qyer)){
+        sqlErrorLog(qyer);
+        return false;
+    }
+    return true;
+}
+
+bool MySql::addToPlayList(const SongHeader &header, const QString &newPlaylist){
+    if(header.id > -1){
+        QString qyer = QString("INSERT INTO playlistsdata(song, playlist) VALUE(%0,'%1')").arg(header.id).arg(newPlaylist);
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else if(!header.name.isEmpty() && header.size > 0){
+        QString qyer = QString("INSERT INTO playlistsdata(song, playlist) "
+                               "VALUE(SELECT(id from songs where name='%0' and size='%1'),'%2')")
+                .arg(header.name).arg(header.size).arg(newPlaylist);
+
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else {
+        return false;
+    }
+    return true;
+}
+
+bool MySql::removeFromPlayList(const SongHeader &header, const QString &playList){
+    if(header.id > -1){
+        QString qyer = QString("DELETE from playlistsdata where song=%0 and playlist='%1')").arg(header.id).arg(playList);
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else if(!header.name.isEmpty() && header.size > 0){
+        QString qyer = QString("DELETE from playlistsdata where "
+                               "song=SELECT(id from songs where name='%0' and size='%1') and playlist='%2')")
+                .arg(header.name).arg(header.size).arg(playList);
+
+        if(!qyery->exec(qyer)){
+            sqlErrorLog(qyer);
+            return false;
+        }
+    }else {
+        return false;
+    }
+    return true;
+}
+
+bool MySql::removePlayList(const QString &playList){
+    QString qyer = QString("DELETE from playlists where name='%0'").arg(playList);
+    if(!qyery->exec(qyer)){
+        sqlErrorLog(qyer);
+        return false;
+    }
+    return true;
+}
+
 MySql::~MySql(){
     delete db;
-
     QSqlDatabase::removeDatabase(dataBaseName);
 
 }

sync/mysql.h

@@ -76,16 +76,25 @@ public:
      * @param newPlayList - a new paly list.
      * @return trye if all done.
      */
-    bool addPlayList(const QString& newPlayList);
+    bool addPlayList(const QString& newPlayList, const QString& desc = "");
 
     /**
-     * @brief changePlayList - replase play list for song.
+     * @brief addToPlayList - add song to play list.
-     * @param heder - header of song.  first : song removed by id,
+     * @param header - header of song.  first : song removed by id,
      * if id of head = -1 then song removed by name and size, and if song no finded this finction return false.
      * @param newPlaylist
      * @return true if all done.
      */
-    bool changePlayList(const SongHeader& heder, const QString& newPlaylist);
+    bool addToPlayList(const SongHeader& header, const QString& playList);
+
+    /**
+     * @brief addToPlayList - add song to play list.
+     * @param header - header of song.  first : song removed by id,
+     * if id of head = -1 then song removed by name and size, and if song no finded this finction return false.
+     * @param newPlaylist
+     * @return true if all done.
+     */
+    bool removeFromPlayList(const SongHeader& header, const QString& playList);
 
     /**
      * @brief removePlayList - remove play list from local database.

sync/sql/InitLacaleDataBase.sql

@@ -1,5 +1,5 @@
 CREATE TABLE IF NOT EXISTS songs(
-	id INTEGER AUTO INCREMENT, 
+	id INTEGER AUTOINCREMENT, 
 	name VARCHAR(100), 
 	size INT NOT NULL,
 	data BLOB NOT NULL,
@@ -10,7 +10,7 @@ CREATE TABLE IF NOT EXISTS songs(
 CREATE UNIQUE INDEX IF NOT EXISTS isongs ON songs(name,size);
 
 CREATE TABLE IF NOT EXISTS playlists(
-	id INTEGER AUTO INCREMENT,
+	id INTEGER AUTOINCREMENT,
 	name VARCHAR(50) NOT NULL UNIQUE,
 	description VARCHAR(1000) DEFAULT NULL,
 	image BLOB DEFAULT NULL,