new game data system that based on json

1 files changed, 81 insertions, 17 deletions

diff --git a/core/src/com/ilotterytea/maxoning/utils/serialization/GameDataSystem.java b/core/src/com/ilotterytea/maxoning/utils/serialization/GameDataSystem.java
index a10d98a..3e64c45 100644
--- a/core/src/com/ilotterytea/maxoning/utils/serialization/GameDataSystem.java
+++ b/core/src/com/ilotterytea/maxoning/utils/serialization/GameDataSystem.java
@@ -1,35 +1,99 @@
 package com.ilotterytea.maxoning.utils.serialization;
 
+import com.badlogic.gdx.utils.Null;
+import com.google.gson.Gson;
 import com.ilotterytea.maxoning.MaxonConstants;
-import com.ilotterytea.maxoning.player.MaxonPlayer;
+import com.ilotterytea.maxoning.player.MaxonSavegame;
+import org.jetbrains.annotations.NotNull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.*;
+import java.util.ArrayList;
 
+/**
+ * External game data system control.
+ * @author NotDankEnough
+ * @since Alpha 1.0
+ */
 public class GameDataSystem {
     private static final File dir = new File(MaxonConstants.GAME_SAVEGAME_FOLDER);
-    private static final File file = new File(dir.getPath() + "/savegame.sav");
+    private static final Gson gson = new Gson();
+    private static final Logger log = LoggerFactory.getLogger(GameDataSystem.class.getSimpleName());
 
-    public static boolean exists() { return file.exists(); }
+    /**
+     * Get all savefiles from savegame directory (/.Maxoning/savegames/)
+     * @return Array of MaxonSavegames
+     * @see MaxonSavegame
+     */
+    public static ArrayList<MaxonSavegame> getSavegames() {
+        ArrayList<MaxonSavegame> saves = new ArrayList<>();
+        File[] files = dir.listFiles();
 
-    public static void SaveData(MaxonPlayer player) throws IOException {
-        if (!dir.exists()) {
-            dir.mkdirs();
+        assert files != null;
+        for (File file : files) {
+            try {
+
+                FileInputStream fis = new FileInputStream(file);
+                ObjectInputStream ois = new ObjectInputStream(fis);
+
+                MaxonSavegame sav = gson.fromJson(ois.readUTF(), MaxonSavegame.class);
+                saves.add(sav);
+
+                ois.close();
+                fis.close();
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
         }
-        FileOutputStream fo = new FileOutputStream(file);
-        ObjectOutputStream out = new ObjectOutputStream(fo);
 
-        out.writeObject(player);
-        out.close();
+        return saves;
+    }
+
+    /**
+     * Convert <b>MaxonSavegame</b> class to <b>JSON</b> string and write in UTF-8 encoding (I'm sorry, encryption enjoyers).
+     * @param savegame Save game object.
+     * @param file_name File name.
+     * @see MaxonSavegame
+     */
+    public static void save(@NotNull MaxonSavegame savegame, @NotNull String file_name) {
+        try {
+            log.info("Saving the game...");
+            FileOutputStream fos = new FileOutputStream(String.format("%s/%s", dir.getAbsolutePath(), file_name));
+            ObjectOutputStream oos = new ObjectOutputStream(fos);
+
+            oos.writeUTF(gson.toJson(savegame));
+            oos.close();
+            log.info(String.format("Success! Savegame located at %s/%s", dir.getAbsolutePath(), file_name));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
     }
 
-    public static MaxonPlayer LoadData() throws IOException, ClassNotFoundException {
-        FileInputStream fi = new FileInputStream(file);
-        ObjectInputStream oi = new ObjectInputStream(fi);
+    /**
+     * Reading a <b>JSON</b> string from the file and convert to <b>MaxonSavegame</b> class.
+     * @param file_name File name. If null - it will get the first file by last modified time.
+     * @return Filled <b>MaxonSavegame</b> class
+     * @see MaxonSavegame
+     */
+    public static MaxonSavegame load(@Null String file_name) {
+        MaxonSavegame sav = new MaxonSavegame();
+
+        if (new File(dir.getAbsolutePath() + "/" + file_name).exists()) {
+            try {
+                log.info(String.format("Trying to get the savegame at %s/%s...", dir.getAbsolutePath(), file_name));
+                FileInputStream fis = new FileInputStream(String.format("%s/%s", dir.getAbsolutePath(), file_name));
+                ObjectInputStream oos = new ObjectInputStream(fis);
 
-        MaxonPlayer pl = (MaxonPlayer) oi.readObject();
+                sav = gson.fromJson(oos.readUTF(), MaxonSavegame.class);
+                oos.close();
+
+                log.info(String.format("Successfully loaded the savegame from %s/%s!", dir.getAbsolutePath(), file_name));
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        }
 
-        oi.close();
-        fi.close();
-        return pl;
+        return sav;
     }
 }