push backup

cmd/server/data/data.go

@@ -2,12 +2,17 @@ package data
 
 import (
 	"cloudsave/pkg/repository"
+	"cloudsave/pkg/tools/hash"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
-	"time"
+)
+
+var (
+	ErrBackupNotExists error = errors.New("backup not found")
 )
 
 func Write(gameID, documentRoot string, r io.Reader) error {
@@ -40,15 +45,19 @@ func Write(gameID, documentRoot string, r io.Reader) error {
 	return nil
 }
 
-func WriteHist(gameID, documentRoot string, dt time.Time, r io.Reader) error {
-	dataFolderPath := filepath.Join(documentRoot, "data", gameID, "hist")
-	partPath := filepath.Join(dataFolderPath, dt.Format("2006-01-02T15-04-05Z07-00")+".data.tar.gz.part")
-	finalFilePath := filepath.Join(dataFolderPath, dt.Format("2006-01-02T15-04-05Z07-00")+".data.tar.gz")
+func WriteHist(gameID, documentRoot, uuid string, r io.Reader) error {
+	dataFolderPath := filepath.Join(documentRoot, "data", gameID, "hist", uuid)
+	partPath := filepath.Join(dataFolderPath, "data.tar.gz.part")
+	finalFilePath := filepath.Join(dataFolderPath, "data.tar.gz")
 
 	if err := makeDataFolder(gameID, documentRoot); err != nil {
 		return err
 	}
 
+	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
@@ -86,6 +95,29 @@ func UpdateMetadata(gameID, documentRoot string, m repository.Metadata) error {
 	return e.Encode(m)
 }
 
+func ArchiveInfo(gameID, documentRoot, uuid string) (repository.Backup, error) {
+	dataFolderPath := filepath.Join(documentRoot, "data", gameID, "hist", uuid, "data.tar.gz")
+
+	finfo, err := os.Stat(dataFolderPath)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return repository.Backup{}, ErrBackupNotExists
+		}
+		return repository.Backup{}, err
+	}
+
+	h, err := hash.FileMD5(dataFolderPath)
+	if err != nil {
+		return repository.Backup{}, fmt.Errorf("failed to calculate file md5: %w", err)
+	}
+
+	return repository.Backup{
+		CreatedAt: finfo.ModTime(),
+		UUID:      uuid,
+		MD5:       h,
+	}, nil
+}
+
 func makeDataFolder(gameID, documentRoot string) error {
 	if err := os.MkdirAll(filepath.Join(documentRoot, "data", gameID), 0740); err != nil {
 		return err