[gnome-games/wip/exalm/runner-refactor: 27/58] retro-runner: Make create_savestate() not depend on tmp_live_savestate

[Alexander Mikhaylenko <alexm src gnome org>]

commit 4e0ef6629662752850bc4715cbbb3f7d0619b0b0
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Mar 6 17:46:36 2020 +0500

    retro-runner: Make create_savestate() not depend on tmp_live_savestate
    
    This will allow it to be moved into SnapshotManager in the next commit.

 src/core/savestate.vala     | 28 ++++++++++++++++++++++++++++
 src/retro/retro-runner.vala | 27 ++++++++++++---------------
 2 files changed, 40 insertions(+), 15 deletions(-)
---
diff --git a/src/core/savestate.vala b/src/core/savestate.vala
index 50d73d6c..8729edc5 100644
--- a/src/core/savestate.vala
+++ b/src/core/savestate.vala
@@ -178,6 +178,34 @@ public class Games.Savestate : Object {
                return Savestate.load (platform, core_id, prepare_empty_savestate_in_tmp ());
        }
 
+       public static Savestate create_empty (Game game, string core_id, string path) throws Error {
+               var random = Random.next_int ();
+               var tmp_path = @"$(path)_$random";
+
+               var dir = File.new_for_path (tmp_path);
+               dir.make_directory ();
+
+               var save_dir = dir.get_child ("save-dir");
+               save_dir.make_directory ();
+
+               return Savestate.load (game.platform, core_id, tmp_path);
+       }
+
+       public Savestate move_to (string dest_path) throws Error {
+               var current_dir = File.new_for_path (path);
+               var dest_dir = File.new_for_path (dest_path);
+
+               var dest = dest_path;
+               while (dest_dir.query_exists ()) {
+                       dest += "_";
+                       dest_dir = File.new_for_path (dest);
+               }
+
+               current_dir.move (dest_dir, FileCopyFlags.ALL_METADATA);
+
+               return Savestate.load (platform, core, dest);
+       }
+
        // Returns the path of the newly created dir in tmp
        private static string prepare_empty_savestate_in_tmp () throws Error {
                var tmp_savestate_path = DirUtils.make_tmp ("games_savestate_XXXXXX");
diff --git a/src/retro/retro-runner.vala b/src/retro/retro-runner.vala
index 3146741a..4ee4e56d 100644
--- a/src/retro/retro-runner.vala
+++ b/src/retro/retro-runner.vala
@@ -479,35 +479,32 @@ public class Games.RetroRunner : Object, Runner {
                if (is_automatic)
                        trim_autosaves ();
 
-               // Populate the metadata file
-               tmp_live_savestate.is_automatic = is_automatic;
+               var creation_date = new DateTime.now ();
+               var path = Path.build_filename (get_game_savestates_dir_path (),
+                                               creation_date.to_string ());
 
-               if (is_automatic)
-                       tmp_live_savestate.name = null;
-               else
-                       tmp_live_savestate.name = create_new_savestate_name ();
-
-               tmp_live_savestate.creation_date = new DateTime.now ();
+               var snapshot = Savestate.create_empty (game, get_core_id (), path);
 
-               save_to_snapshot (tmp_live_savestate);
+               snapshot.is_automatic = is_automatic;
+               snapshot.name = is_automatic ? null : create_new_savestate_name ();
+               snapshot.creation_date = creation_date;
 
-               tmp_live_savestate.write_metadata ();
+               save_to_snapshot (snapshot);
+               snapshot.write_metadata ();
 
-               // Save the tmp_live_savestate into the game savestates directory
-               var game_savestates_dir_path = get_game_savestates_dir_path ();
-               var savestate = tmp_live_savestate.save_in (game_savestates_dir_path);
+               snapshot = snapshot.move_to (path);
 
                // Update the game_savestates array
                // Insert the new savestate at the beginning of the array since it's the latest savestate
                Savestate[] new_game_savestates = {};
 
-               new_game_savestates += savestate;
+               new_game_savestates += snapshot;
                foreach (var existing_savestate in game_savestates)
                        new_game_savestates += existing_savestate;
 
                game_savestates = new_game_savestates;
 
-               return savestate;
+               return snapshot;
        }
 
        public void delete_savestate (Savestate savestate) {