chore: refactor structure

internal/repo/game.go

@@ -0,0 +1,78 @@
+package repo
+
+/*
+    /state.json
+	/000/state.json
+	/000/race/{UUID}/order/001.json
+	/000/race/{UUID}/report.json
+	/000/battle/{planet_UUID}
+*/
+
+import (
+	"fmt"
+
+	"github.com/iliadenisov/galaxy/internal/model/game"
+)
+
+const (
+	statePath = "state.json"
+)
+
+func (r *repo) SaveTurn(t uint, g game.Game) error {
+	return saveTurn(r.s, t, g)
+}
+
+func saveTurn(s Storage, t uint, g game.Game) error {
+	path := fmt.Sprintf("%03d/state.json", 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))
+	}
+	if err := s.Write(path, g); err != nil {
+		return NewStorageError(err)
+	}
+	// TODO: save reports
+	for i := range g.Race {
+		saveRace(s, g, i)
+	}
+	// TODO: save battles
+	return saveState(s, g) // FIXME: either save it here, or in tre repo controller
+}
+
+func saveRace(s Storage, g game.Game, i int) {
+
+}
+
+func (r *repo) SaveState(g game.Game) error {
+	return saveState(r.s, g)
+}
+
+func saveState(s Storage, g game.Game) error {
+	if err := s.Write(statePath, g); err != nil {
+		return NewStorageError(err)
+	}
+	return nil
+}
+
+func (r *repo) LoadState() (game.Game, error) {
+	return loadState(r.s)
+}
+
+func loadState(s Storage) (game.Game, error) {
+	var g game.Game
+	path := statePath
+	exist, err := s.Exists(path)
+	if err != nil {
+		return g, NewStorageError(err)
+	}
+	if !exist {
+		return g, NewStateError("latest state was never stored")
+	}
+	if err := s.Read(path, &g); err != nil {
+		return g, NewStorageError(err)
+	}
+	return g, nil
+}