adds deletion of all games and creation of bd backup

src/main/java/se/lantz/db/DbConnector.java

@@ -23,7 +23,7 @@ import se.lantz.util.ExceptionHandler;
 
 public class DbConnector
 {
-
+  public static final String DB_NAME = "pcusb.db";
   private static final String COMMA = "\",\"";
   private static final Logger logger = LoggerFactory.getLogger(DbConnector.class);
   private List<String> columnList = new ArrayList<>();
@@ -58,7 +58,7 @@ public class DbConnector
     try
     {
       // db parameters
-      String url = "jdbc:sqlite:pcusb.db";
+      String url = "jdbc:sqlite:" + DB_NAME;
       // create a connection to the database
       connection = DriverManager.getConnection(url);
 
@@ -703,4 +703,19 @@ public class DbConnector
       ExceptionHandler.handleException(e, "Could not delete game in db.");
     }
   }
+  
+  public void deleteAllGames()
+  {
+    String sql = "DELETE FROM gameinfo;";
+    logger.debug("Generated DELETE String:\n{}", sql);
+    try (Connection conn = this.connect(); PreparedStatement pstmt = conn.prepareStatement(sql))
+    {
+      int value = pstmt.executeUpdate();
+      logger.debug("Executed successfully, value = {}", value);
+    }
+    catch (SQLException e)
+    {
+      ExceptionHandler.handleException(e, "Could not delete games in db.");
+    }
+  }
 }

src/main/java/se/lantz/gui/MainPanel.java

@@ -29,7 +29,7 @@ public class MainPanel extends JPanel
     });
 
     uiModel.addDuplicateGameListener(e -> showDuplicateDialog(e.getNewValue().toString()));
-    uiModel.addRequireFieldsListener(e -> showRequiredFieldsDialog((List<String>)e.getNewValue()));
+    uiModel.addRequireFieldsListener(e -> showRequiredFieldsDialog((List<String>) e.getNewValue()));
   }
 
   private JSplitPane getSplitPane()
@@ -106,7 +106,7 @@ public class MainPanel extends JPanel
   {
     getListPanel().addNewGame();
   }
-  
+
   public void deleteCurrentGame()
   {
     if (getListPanel().getSelectedIndexInList() > -1)
@@ -121,7 +121,40 @@ public class MainPanel extends JPanel
       }
     }
   }
+
+  public void deleteAllGames()
+  {
+    int value = showDeleteAllGamesDialog();
+    if (value == JOptionPane.YES_OPTION)
+    {
+      uiModel.deleteAllGames();
+      repaintAfterModifications();
+      SwingUtilities.invokeLater(() -> getListPanel().setSelectedIndexInList(0));
+    }
+  }
   
+  public void backupDb()
+  {
+    String backupFolderName = uiModel.backupDb();
+    String message = "";
+    if (backupFolderName != null)
+    {
+      message = "Backup saved in the folder " + backupFolderName;
+      JOptionPane.showMessageDialog(MainPanel.this,
+                                    message,
+                                    "Backup db",
+                                    JOptionPane.INFORMATION_MESSAGE);
+    }
+    else
+    {
+      message = "Could not create a backup.";
+      JOptionPane.showMessageDialog(MainPanel.this,
+                                    message,
+                                    "Backup db",
+                                    JOptionPane.ERROR_MESSAGE);
+    }
+  }
+
   int showDeleteDialog()
   {
     String message = "Do you want to delete " + uiModel.getInfoModel().getTitle() + " from the database?";
@@ -129,14 +162,20 @@ public class MainPanel extends JPanel
     {
       message = "Do you want to delete the new game entry?";
     }
-    return JOptionPane.showConfirmDialog(MainPanel.this,
+    return JOptionPane
+      .showConfirmDialog(MainPanel.this, message, "Delete", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
+  }
+  
+  int showDeleteAllGamesDialog()
+  {
+    String message = "Do you want to delete all games from the database? A backup will added to the backups folder before deleting.\nCover, screenshot and game files will not be deleted.";
+    return  JOptionPane.showConfirmDialog(MainPanel.this,
                                          message,
-                                         "Delete",
+                                         "Delete all games",
                                          JOptionPane.YES_NO_OPTION,
                                          JOptionPane.QUESTION_MESSAGE);
   }
-  
-  
+
   public void repaintAfterModifications()
   {
     this.invalidate();

src/main/java/se/lantz/gui/MenuManager.java

@@ -180,10 +180,8 @@ public class MenuManager
 
   private JMenuItem getBackupDbItem()
   {
-    backupDbItem = new JMenuItem("Backup database...");
-    backupDbItem.addActionListener(e -> {
-
-    });
+    backupDbItem = new JMenuItem("Backup database");
+    backupDbItem.addActionListener(e -> mainWindow.getMainPanel().backupDb());
     return backupDbItem;
   }
 
@@ -198,10 +196,8 @@ public class MenuManager
 
   private JMenuItem getCreateEmptyDbItem()
   {
-    createEmptyDbItem = new JMenuItem("Create empty database...");
-    createEmptyDbItem.addActionListener(e -> {
-      //TODO
-    });
+    createEmptyDbItem = new JMenuItem("Delete all games");
+    createEmptyDbItem.addActionListener(e -> mainWindow.getMainPanel().deleteAllGames());
     return createEmptyDbItem;
   }
 

src/main/java/se/lantz/manager/ExportManager.java

@@ -50,7 +50,7 @@ public class ExportManager
   {
     for (GameDetails gameDetails : gameDetailsList)
     {
-      uiModel.exportGame(gameDetails, targetDir, this.favFormat, infoBuilder);
+      uiModel.exportGameInfoFile(gameDetails, targetDir, this.favFormat, infoBuilder);
     }
   }
 

src/main/java/se/lantz/model/MainViewModel.java

@@ -135,9 +135,9 @@ public class MainViewModel extends AbstractModel
     return returnList;
   }
   
-  public void exportGame(GameDetails gameDetails, File targetDir, boolean favFormat, StringBuilder infoBuilder)
+  public void exportGameInfoFile(GameDetails gameDetails, File targetDir, boolean favFormat, StringBuilder infoBuilder)
   {
-    fileManager.exportGame(gameDetails, targetDir, favFormat, infoBuilder);
+    fileManager.exportGameInfoFile(gameDetails, targetDir, favFormat, infoBuilder);
   }
 
   public InfoModel getInfoModel()
@@ -320,6 +320,21 @@ public class MainViewModel extends AbstractModel
       reloadCurrentGameView();
     }
   }
+  
+  public void deleteAllGames()
+  {
+    if (backupDb() != null)
+    {
+      dbConnector.deleteAllGames();
+      //Reload the current view
+      reloadCurrentGameView();
+    }
+  }
+  
+  public String backupDb()
+  {
+    return FileManager.backupDb();
+  }
 
   private List<String> validateRequiredFields()
   {

src/main/java/se/lantz/util/FileManager.java

@@ -12,6 +12,8 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Properties;
 import java.util.stream.Collectors;
@@ -22,6 +24,7 @@ import javax.imageio.ImageIO;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import se.lantz.db.DbConnector;
 import se.lantz.model.InfoModel;
 import se.lantz.model.data.GameDetails;
 
@@ -30,6 +33,7 @@ public class FileManager
   private static final String GAMES = "./games/";
   private static final String SCREENS = "./screens/";
   private static final String COVERS = "./covers/";
+  private static final String BACKUP = "./backup/";
 
   private static final Logger logger = LoggerFactory.getLogger(FileManager.class);
 
@@ -231,23 +235,22 @@ public class FileManager
     return newNameString;
   }
 
-  public void exportGame(GameDetails gameDetails, File targetDir, boolean favFormat, StringBuilder infoBuilder)
+  public void exportGameInfoFile(GameDetails gameDetails, File targetDir, boolean favFormat, StringBuilder infoBuilder)
   {
     try
     {
-      String fileName = generateFileNameFromTitle(gameDetails.getTitle());
+      String filename = generateFileNameFromTitle(gameDetails.getTitle());
 
       infoBuilder.append("Creating game info file for " + gameDetails.getTitle() + "\n");
 
-      String filename = fileName;
       if (favFormat)
       {
-        filename = fileName + ".tsg";
+        filename = filename + ".tsg";
       }
       else
       {
         //Add -ms to comply with the maxi game tool.
-        filename = fileName + "-ms.tsg";
+        filename = filename + "-ms.tsg";
       }
       writeGameInfoFile(filename, targetDir, gameDetails, favFormat);
     }
@@ -257,9 +260,6 @@ public class FileManager
       logger.error(message, e);
       infoBuilder.append(message);
     }
-
-    //TODO copy the other files into the right location
-
   }
 
   public void writeGameInfoFile(String fileName, File targetDir, GameDetails gameDetails, boolean favFormat)
@@ -361,4 +361,27 @@ public class FileManager
     }
     return fileProperties;
   }
+  
+  public static String backupDb()
+  {
+    //TODO: Copy screens, covers, games also to the backup folder
+    DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss");  
+    LocalDateTime now = LocalDateTime.now();  
+    //String for current date and time
+    String dateAndTime = dtf.format(now);
+    File outputFolder = new File(BACKUP + "/" + dateAndTime + "/");
+    try
+    {
+      File dbFile = new File("./" + DbConnector.DB_NAME);
+      Files.createDirectories(outputFolder.toPath());
+      Path targetFile = outputFolder.toPath().resolve(DbConnector.DB_NAME);
+      Files.copy(dbFile.toPath(), targetFile);
+    }
+    catch (IOException e)
+    {
+      ExceptionHandler.handleException(e, "Could not create backup of Db");
+      return null;
+    }
+    return dateAndTime;
+  }
 }