recator: Repo interface

internal/repo/game.go

@@ -34,30 +34,30 @@ func saveReport(s Storage, t uint, v *report.Report) error {
 	return nil
 }
 
-func (r *repo) SaveTurn(t uint, g *game.Game) error {
-	return saveTurn(r.s, t, g)
+func (r *repo) SaveNewTurn(t uint, g *game.Game) error {
+	return saveNewTurn(r.s, t, g)
 }
 
-func saveTurn(s Storage, t uint, g *game.Game) error {
+func saveNewTurn(s Storage, t uint, g *game.Game) error {
 	path := fmt.Sprintf("%s/state.json", turnDir(t))
 	exist, err := s.Exists(path)
 	if err != nil {
 		return NewStorageError(err)
 	}
 	if exist {
-		return NewStateError(fmt.Sprintf("state for turn %d already saved", t))
+		return NewStateError(fmt.Sprintf("turn %d already saved at %s", t, path))
 	}
 	if err := s.Write(path, g); err != nil {
 		return NewStorageError(err)
 	}
-	return saveState(s, g) // FIXME: either save it here, or in tre repo controller
+	return saveLastState(s, g)
 }
 
-func (r *repo) SaveState(g *game.Game) error {
-	return saveState(r.s, g)
+func (r *repo) SaveLastState(g *game.Game) error {
+	return saveLastState(r.s, g)
 }
 
-func saveState(s Storage, g *game.Game) error {
+func saveLastState(s Storage, g *game.Game) error {
 	if err := s.Write(statePath, g); err != nil {
 		return NewStorageError(err)
 	}