wip

cmd/server/data/data.go

@@ -0,0 +1,53 @@
+package data
+
+import (
+	"cloudsave/pkg/game"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+func Write(gameID, documentRoot string, r io.Reader) error {
+	dataFolderPath := filepath.Join(documentRoot, "data", gameID)
+	partPath := filepath.Join(dataFolderPath, "data.tar.gz.part")
+	finalFilePath := filepath.Join(dataFolderPath, "data.tar.gz")
+
+	if err := os.MkdirAll(dataFolderPath, 0740); err != nil {
+		return err
+	}
+
+	f, err := os.OpenFile(partPath, os.O_CREATE|os.O_WRONLY, 0740)
+	if err != nil {
+		return err
+	}
+
+	if _, err := io.Copy(f, r); err != nil {
+		f.Close()
+		if err := os.Remove(partPath); err != nil {
+			return fmt.Errorf("failed to write the file and cannot clean the folder: %w", err)
+		}
+		return fmt.Errorf("failed to write the file: %w", err)
+	}
+	f.Close()
+
+	if err := os.Rename(partPath, finalFilePath); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func UpdateMetadata(gameID, documentRoot string, m game.Metadata) error {
+	path := filepath.Join(documentRoot, "data", gameID, "metadata.json")
+
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0740)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	e := json.NewEncoder(f)
+	return e.Encode(m)
+}