Merge pull request #16 from PM2-IT21bWIN-ruiz-mach-krea/FileIO

FileIO completed including Java Doc and logging

app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/FileIO.java

@@ -11,14 +11,20 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.logging.Logger;
 
-
+/**
+ * Class in Charge of Reading and Writing files
+ */
 public class FileIO {
     private File mainDir;
     private File saves;
 
     private static final Logger logger = Logger.getLogger(FileIO.class.getName());
 
-
+    /**
+     * Constructor initiates the Directory and creates a save folder if not already existing.
+     *
+     * @param saveLocation the directory in which the save Files will be saved
+     */
     public FileIO(String saveLocation) {
         this.mainDir = new File(saveLocation);
         if (!mainDir.exists()) {
@@ -37,6 +43,11 @@ public class FileIO {
         }
     }
 
+    /**
+     * Returns a list with all save Files that are located inside the save folder.
+     *
+     * @return List with all containing save Files
+     */
     public ObservableList<TournamentFile> getList() {
         logger.fine("Creating a List out of all Files in the save directory and returning it");
         ObservableList<TournamentFile> tournamentFiles = FXCollections.observableArrayList();
@@ -56,12 +67,15 @@ public class FileIO {
     }
 
     /**
-     * @param tournamentFile
-     * @return
-     * @throws ClassNotFoundException
-     * @throws IOException            File not found or not readable.
+     * Loads and returns a tournament from a given File which contains the serialiazed tournament.
+     *
+     * @param tournamentFile The tournament file where the data should be read from.
+     * @return Tournament that is returned when succefully being read from the file
+     * @throws ClassNotFoundException No definition for the class with the specified name could be found
+     * @throws IOException            File not readable
+     * @throws FileNotFoundException  File not found
      */
-    public Tournament loadTournament(File tournamentFile) throws IOException, ClassNotFoundException {
+    public Tournament loadTournament(File tournamentFile) throws IOException, ClassNotFoundException, FileNotFoundException {
         if (tournamentFile == null) {
             logger.warning("Given tournament file is empty");
             throw new IllegalArgumentException("Tournament File is null");
@@ -98,30 +112,42 @@ public class FileIO {
         return tournament;
     }
 
-    public void saveTournament(Tournament tournament) throws IOException {
+    /**
+     * Serializables and saves the receiving tournament file to a txt file.
+     *
+     * @param tournament the receiving tournament.
+     * @throws IOException           File not readable
+     * @throws FileNotFoundException File not found
+     */
+    public void saveTournament(Tournament tournament) throws IOException, FileNotFoundException {
         if (tournament == null) {
             logger.warning("Given tournament file is empty");
             throw new IllegalArgumentException("Null tournament received");
         }
+        logger.fine("Creates the Object for the path of the save file");
         File newSave = new File(saves, tournament.getName() + ".txt");
         ObjectOutputStream out = null;
 
         try {
-            boolean newFile = newSave.createNewFile();
+            logger.fine("creates or overwrites the new save FILE");
+            newSave.createNewFile();
             out = new ObjectOutputStream(new FileOutputStream(newSave));
             out.writeObject(tournament);
             System.out.println("Save File" + tournament.getName() + ".txt being saved to " + saves.getAbsolutePath());
 
         } catch (FileNotFoundException e) {
-            throw new RuntimeException(e);
+            logger.severe("Could not find tournament File");
+            throw e;
         } catch (IOException e) {
-            throw new RuntimeException(e);
+            logger.severe("Failed to write File" + tournament.getName());
+            throw new IOException("Error while writing File", e);
         } finally {
             if (out != null) {
                 try {
                     out.close();
                 } catch (IOException e) {
-                    throw new RuntimeException(e);
+                    logger.severe("Failed to close output stream");
+                    throw new IOException("Error while closing output stream", e);
                 }
             }
 
@@ -129,6 +155,24 @@ public class FileIO {
 
     }
 
+    /**
+     * Deletes the requested File in the directory
+     *
+     * @param tournamentFile the file that should be deleted
+     * @throws FileNotFoundException    File could not be deleted
+     * @throws IllegalArgumentException File is null
+     */
+    public void deleteTournament(File tournamentFile) throws FileNotFoundException {
+        if (tournamentFile == null) {
+            throw new IllegalArgumentException("Receiving file is null");
+        }
+        if (tournamentFile.delete()) {
+            logger.fine("deleted requested File");
+        } else {
+            logger.warning("Failed to delete requested File");
+            throw new FileNotFoundException("File deletion unsuccessful");
+        }
+  
     public class TournamentFile extends File{
 
         public TournamentFile(URI uri) {
@@ -141,8 +185,4 @@ public class FileIO {
 
     }
 
-    public void deleteTournament(File tournamentFile) throws IOException {
-        throw new UnsupportedOperationException("Method deleteTournament not implemented yet.");
-    }
-
 }