[gnome-chess] Remove ChessHistory class

[Michael Catanzaro <mcatanzaro src gnome org>]

commit cd6a23828144b588e788eedbf1f72a04c6b89879
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Fri Aug 23 17:49:16 2013 -0500

    Remove ChessHistory class
    
    I'm not sure why this class originally existed, but currently it's only
    used to maintain a stack of autosaved games, so that after completing
    the first autoloaded game on the stack, the next time you start the game
    the next game on the stack will be autoloaded.  This feature was
    determined to be undesirable -- we'd really like only one game to be
    autoloaded at a time -- so I added a delete query to ChessHistory such
    that all the previous games on the stack would be removed when a new one
    was added.  But that meant an SQLite database was used to store exactly
    one game.  Let's drop this.
    
    We can also remove the dependency on SQLite.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=705878

 configure.ac         |    1 -
 src/Makefile.am      |    3 +-
 src/gnome-chess.vala |   24 +++---
 src/history.vala     |  207 --------------------------------------------------
 4 files changed, 12 insertions(+), 223 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9e69bc7..d60abb6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,6 @@ PKG_CHECK_MODULES(GNOME_CHESS, [
   gmodule-2.0
   gtk+-3.0 >= $GTK_REQUIRED
   librsvg-2.0 >= $RSVG_REQUIRED
-  sqlite3
   gl
   glu
   x11
diff --git a/src/Makefile.am b/src/Makefile.am
index b7e8a3f..1c54089 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -22,8 +22,7 @@ gnome_chess_SOURCES = \
        chess-scene.vala \
        chess-view.vala \
        chess-view-2d.vala \
-       chess-view-3d.vala \
-       history.vala
+       chess-view-3d.vala
 
 test_chess_game_SOURCES = \
        chess-bitboard.vala \
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 2757805..39d63e2 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -14,7 +14,6 @@ extern void gtk_file_filter_set_name (Gtk.FileFilter filter, string name);
 public class Application : Gtk.Application
 {
     private Settings settings;
-    private History history;
     private Gtk.Builder builder;
     private Gtk.Builder preferences_builder;
     private Gtk.Window window;
@@ -57,6 +56,7 @@ public class Application : Gtk.Application
     private PGNGame pgn_game;
     private ChessGame game;
     private bool in_history;
+    private string autosave_filename;
     private File game_file;
     private bool game_needs_saving;
     private string? saved_filename = null;
@@ -118,8 +118,6 @@ public class Application : Gtk.Application
         var data_dir = File.new_for_path (Path.build_filename (Environment.get_user_data_dir (), 
"gnome-chess", null));
         DirUtils.create_with_parents (data_dir.get_path (), 0755);
 
-        history = new History (data_dir);
-
         add_action_entries (app_entries, this);
 
         builder = new Gtk.Builder ();
@@ -199,15 +197,16 @@ public class Application : Gtk.Application
         foreach (var profile in ai_profiles)
             message ("Detected AI profile %s in %s", profile.name, profile.path);
 
+        autosave_filename = data_dir.get_path () + "/autosave.pgn";
+
         /* Load from history if no game requested */
         if (game_file == null)
         {
-            var unfinished = history.get_unfinished ();
-            if (unfinished != null)
-            {
+            if (FileUtils.test (autosave_filename, FileTest.EXISTS))
+                game_file = File.new_for_path (autosave_filename);
+
+            if (game_file != null)
                 in_history = true;
-                game_file = unfinished.last().data;
-            }
             else
                 start_new_game ();
         }
@@ -352,16 +351,15 @@ public class Application : Gtk.Application
         if (!game_needs_saving)
         {
             if (game_file != null)
-                history.remove (game_file);
+                FileUtils.remove (game_file.get_path ());
             return;
         }
 
         try
         {
             if (!in_history || game_file == null)
-                game_file = history.add (pgn_game.date, pgn_game.result);
-            else
-                history.update (game_file, "", pgn_game.result);
+                game_file = File.new_for_path (autosave_filename);
+
             debug ("Writing current game to %s", game_file.get_path ());
             update_pgn_time_remaining ();
             pgn_game.write (game_file);
@@ -1021,7 +1019,7 @@ public class Application : Gtk.Application
         claim_draw_button.sensitive = false;
         pause_button.sensitive = false;
 
-        game_needs_saving = true;
+        game_needs_saving = false;
 
         if (opponent_engine != null)
             opponent_engine.stop ();