starting 0.0.2 dev

build.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 MAKE_PACKAGE=false
-VERSION=0.0.1
+VERSION=0.0.2
 
 usage() {
  echo "Usage: $0 [OPTIONS]"

cmd/cli/commands/add/add.go

@@ -1,7 +1,7 @@
 package add
 
 import (
-	"cloudsave/pkg/game"
+	"cloudsave/pkg/repository"
 	"context"
 	"flag"
 	"fmt"
@@ -44,7 +44,7 @@ func (p *AddCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) s
 		p.name = filepath.Base(path)
 	}
 
-	m, err := game.Add(p.name, path)
+	m, err := repository.Add(p.name, path)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to add game reference:", err)
 		return subcommands.ExitFailure

cmd/cli/commands/list/list.go

@@ -1,9 +1,9 @@
 package list
 
 import (
-	"cloudsave/pkg/game"
 	"cloudsave/pkg/remote/client"
-	"cloudsave/pkg/tools/prompt/credentials"
+	"cloudsave/pkg/repository"
+	"cloudsave/cmd/cli/tools/prompt/credentials"
 	"context"
 	"flag"
 	"fmt"
@@ -57,7 +57,7 @@ func (p *ListCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 }
 
 func local() error {
-	games, err := game.All()
+	games, err := repository.All()
 	if err != nil {
 		return fmt.Errorf("failed to load datastore: %w", err)
 	}

cmd/cli/commands/pull/pull.go

@@ -1,10 +1,10 @@
 package pull
 
 import (
-	"cloudsave/pkg/game"
 	"cloudsave/pkg/remote/client"
+	"cloudsave/pkg/repository"
 	"cloudsave/pkg/tools/archive"
-	"cloudsave/pkg/tools/prompt/credentials"
+	"cloudsave/cmd/cli/tools/prompt/credentials"
 	"context"
 	"flag"
 	"fmt"
@@ -54,7 +54,7 @@ func (p *PullCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 		return subcommands.ExitFailure
 	}
 
-	archivePath := filepath.Join(game.DatastorePath(), gameID, "data.tar.gz")
+	archivePath := filepath.Join(repository.DatastorePath(), gameID, "data.tar.gz")
 
 	m, err := cli.Metadata(gameID)
 	if err != nil {
@@ -62,7 +62,7 @@ func (p *PullCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 		return subcommands.ExitFailure
 	}
 
-	err = game.Register(m, path)
+	err = repository.Register(m, path)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "failed to register local metadata: %s", err)
 		return subcommands.ExitFailure

cmd/cli/commands/remote/remote.go

@@ -1,9 +1,9 @@
 package remote
 
 import (
-	"cloudsave/pkg/game"
 	"cloudsave/pkg/remote"
 	"cloudsave/pkg/remote/client"
+	"cloudsave/pkg/repository"
 	"context"
 	"flag"
 	"fmt"
@@ -62,7 +62,7 @@ func (p *RemoteCmd) Execute(ctx context.Context, f *flag.FlagSet, _ ...interface
 }
 
 func list() error {
-	games, err := game.All()
+	games, err := repository.All()
 	if err != nil {
 		return fmt.Errorf("failed to load datastore: %w", err)
 	}

cmd/cli/commands/remove/remove.go

@@ -1,7 +1,7 @@
 package remove
 
 import (
-	"cloudsave/pkg/game"
+	"cloudsave/pkg/repository"
 	"context"
 	"flag"
 	"fmt"
@@ -31,7 +31,7 @@ func (p *RemoveCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}
 		return subcommands.ExitUsageError
 	}
 
-	err := game.Remove(f.Arg(0))
+	err := repository.Remove(f.Arg(0))
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to unregister the game:", err)
 		return subcommands.ExitFailure

cmd/cli/commands/run/run.go

@@ -1,9 +1,8 @@
 package run
 
 import (
-	"archive/tar"
+	"cloudsave/pkg/repository"
-	"cloudsave/pkg/game"
+	"cloudsave/pkg/tools/archive"
-	"compress/gzip"
 	"context"
 	"flag"
 	"fmt"
@@ -32,7 +31,7 @@ func (*RunCmd) Usage() string {
 func (p *RunCmd) SetFlags(f *flag.FlagSet) {}
 
 func (p *RunCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	datastore, err := game.All()
+	datastore, err := repository.All()
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to load datastore:", err)
 		return subcommands.ExitFailure
@@ -43,18 +42,18 @@ func (p *RunCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) s
 
 	for _, metadata := range datastore {
 		pg.Describe("Scanning " + metadata.Name + "...")
-		metadataPath := filepath.Join(game.DatastorePath(), metadata.ID)
+		metadataPath := filepath.Join(repository.DatastorePath(), metadata.ID)
 		//todo transaction
 		err := archiveIfChanged(metadata.ID, metadata.Path, filepath.Join(metadataPath, "data.tar.gz"), filepath.Join(metadataPath, ".last_run"))
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "error: cannot process the data of %s: %s\n", metadata.ID, err)
 			return subcommands.ExitFailure
 		}
-		if err := game.SetVersion(metadata.ID, metadata.Version+1); err != nil {
+		if err := repository.SetVersion(metadata.ID, metadata.Version+1); err != nil {
 			fmt.Fprintf(os.Stderr, "error: cannot process the data of %s: %s\n", metadata.ID, err)
 			return subcommands.ExitFailure
 		}
-		if err := game.SetDate(metadata.ID, time.Now()); err != nil {
+		if err := repository.SetDate(metadata.ID, time.Now()); err != nil {
 			fmt.Fprintf(os.Stderr, "error: cannot process the data of %s: %s\n", metadata.ID, err)
 			return subcommands.ExitFailure
 		}
@@ -69,12 +68,12 @@ func (p *RunCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) s
 // archiveIfChanged will archive srcDir into destTarGz only if any file
 // in srcDir has a modification time > the last run time stored in stateFile.
 // After archiving, it updates stateFile to the current time.
-func archiveIfChanged(id, srcDir, destTarGz, stateFile string) error {
+func archiveIfChanged(gameID, srcDir, destTarGz, stateFile string) error {
-	// 1) Load last run time
+	// load last run time
 	var lastRun time.Time
 	data, err := os.ReadFile(stateFile)
 	if err != nil && !os.IsNotExist(err) {
-		return fmt.Errorf("reading state file: %w", err)
+		return fmt.Errorf("failed to reading state file: %w", err)
 	}
 	if err == nil {
 		lastRun, err = time.Parse(time.RFC3339, string(data))
@@ -83,7 +82,7 @@ func archiveIfChanged(id, srcDir, destTarGz, stateFile string) error {
 		}
 	}
 
-	// 2) Check for changes
+	// check for changes
 	changed := false
 	err = filepath.Walk(srcDir, func(path string, info os.FileInfo, walkErr error) error {
 		if walkErr != nil {
@@ -96,63 +95,29 @@ func archiveIfChanged(id, srcDir, destTarGz, stateFile string) error {
 		return nil
 	})
 	if err != nil && err != io.EOF {
-		return fmt.Errorf("scanning source directory: %w", err)
+		return fmt.Errorf("failed to scanning source directory: %w", err)
 	}
 
 	if !changed {
 		return nil
 	}
 
-	// 3) Create tar.gz
+	// make a backup
+	if err := repository.Archive(gameID); err != nil {
+		return fmt.Errorf("failed to archive data: %w", err)
+	}
+
+	// create archive
 	f, err := os.Create(destTarGz)
 	if err != nil {
-		return fmt.Errorf("creating archive file: %w", err)
+		return fmt.Errorf("failed to creating archive file: %w", err)
 	}
 	defer f.Close()
 
-	gw := gzip.NewWriter(f)
+	if err := archive.Tar(f, srcDir); err != nil {
-	defer gw.Close()
+		return fmt.Errorf("failed archiving files")
-
-	tw := tar.NewWriter(gw)
-	defer tw.Close()
-
-	// Walk again to add files
-	err = filepath.Walk(srcDir, func(path string, info os.FileInfo, walkErr error) error {
-		if walkErr != nil {
-			return walkErr
-		}
-		// Create tar header
-		header, err := tar.FileInfoHeader(info, path)
-		if err != nil {
-			return err
-		}
-		// Preserve directory structure relative to srcDir
-		relPath, err := filepath.Rel(filepath.Dir(srcDir), path)
-		if err != nil {
-			return err
-		}
-		header.Name = relPath
-
-		if err := tw.WriteHeader(header); err != nil {
-			return err
-		}
-		if info.Mode().IsRegular() {
-			file, err := os.Open(path)
-			if err != nil {
-				return err
-			}
-			defer file.Close()
-			if _, err := io.Copy(tw, file); err != nil {
-				return err
-			}
-		}
-		return nil
-	})
-	if err != nil {
-		return fmt.Errorf("writing tar entries: %w", err)
 	}
 
-	// 4) Update state file
 	now := time.Now().UTC().Format(time.RFC3339)
 	if err := os.WriteFile(stateFile, []byte(now), 0644); err != nil {
 		return fmt.Errorf("updating state file: %w", err)

cmd/cli/commands/sync/sync.go

@@ -2,10 +2,10 @@ package sync
 
 import (
 	"cloudsave/cmd/cli/tools/prompt"
-	"cloudsave/pkg/game"
+	"cloudsave/cmd/cli/tools/prompt/credentials"
 	"cloudsave/pkg/remote"
 	"cloudsave/pkg/remote/client"
-	"cloudsave/pkg/tools/prompt/credentials"
+	"cloudsave/pkg/repository"
 	"context"
 	"errors"
 	"flag"
@@ -35,7 +35,7 @@ func (p *SyncCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	games, err := game.All()
+	games, err := repository.All()
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to load datastore:", err)
 		return subcommands.ExitFailure
@@ -72,7 +72,7 @@ func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 			continue
 		}
 
-		hlocal, err := game.Hash(r.GameID)
+		hlocal, err := repository.Hash(r.GameID)
 		if err != nil {
 			slog.Error(err.Error())
 			continue
@@ -84,7 +84,7 @@ func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 			continue
 		}
 
-		vlocal, err := game.Version(r.GameID)
+		vlocal, err := repository.Version(r.GameID)
 		if err != nil {
 			slog.Error(err.Error())
 			continue
@@ -99,7 +99,7 @@ func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 		if hlocal == hremote {
 			if vlocal != remoteMetadata.Version {
 				slog.Debug("version is not the same, but the hash is equal. Updating local database")
-				if err := game.SetVersion(r.GameID, remoteMetadata.Version); err != nil {
+				if err := repository.SetVersion(r.GameID, remoteMetadata.Version); err != nil {
 					fmt.Fprintln(os.Stderr, "error: failed to synchronize version number:", err)
 					continue
 				}
@@ -121,11 +121,11 @@ func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 				fmt.Fprintln(os.Stderr, "failed to push:", err)
 				return subcommands.ExitFailure
 			}
-			if err := game.SetVersion(r.GameID, remoteMetadata.Version); err != nil {
+			if err := repository.SetVersion(r.GameID, remoteMetadata.Version); err != nil {
 				fmt.Fprintln(os.Stderr, "error: failed to synchronize version number:", err)
 				continue
 			}
-			if err := game.SetDate(r.GameID, remoteMetadata.Date); err != nil {
+			if err := repository.SetDate(r.GameID, remoteMetadata.Date); err != nil {
 				fmt.Fprintln(os.Stderr, "error: failed to synchronize date:", err)
 				continue
 			}
@@ -144,8 +144,8 @@ func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{})
 	return subcommands.ExitSuccess
 }
 
-func conflict(gameID string, m, remoteMetadata game.Metadata, cli *client.Client) error {
+func conflict(gameID string, m, remoteMetadata repository.Metadata, cli *client.Client) error {
-	g, err := game.One(gameID)
+	g, err := repository.One(gameID)
 	if err != nil {
 		slog.Warn("a conflict was found but the game is not found in the database")
 		slog.Debug("debug info", "gameID", gameID)
@@ -174,10 +174,10 @@ func conflict(gameID string, m, remoteMetadata game.Metadata, cli *client.Client
 			if err := pull(gameID, cli); err != nil {
 				return fmt.Errorf("failed to push: %w", err)
 			}
-			if err := game.SetVersion(gameID, remoteMetadata.Version); err != nil {
+			if err := repository.SetVersion(gameID, remoteMetadata.Version); err != nil {
 				return fmt.Errorf("failed to synchronize version number: %w", err)
 			}
-			if err := game.SetDate(gameID, remoteMetadata.Date); err != nil {
+			if err := repository.SetDate(gameID, remoteMetadata.Date); err != nil {
 				return fmt.Errorf("failed to synchronize date: %w", err)
 			}
 		}
@@ -185,14 +185,14 @@ func conflict(gameID string, m, remoteMetadata game.Metadata, cli *client.Client
 	return nil
 }
 
-func push(gameID string, m game.Metadata, cli *client.Client) error {
+func push(gameID string, m repository.Metadata, cli *client.Client) error {
-	archivePath := filepath.Join(game.DatastorePath(), gameID, "data.tar.gz")
+	archivePath := filepath.Join(repository.DatastorePath(), gameID, "data.tar.gz")
 
 	return cli.Push(gameID, archivePath, m)
 }
 
 func pull(gameID string, cli *client.Client) error {
-	archivePath := filepath.Join(game.DatastorePath(), gameID, "data.tar.gz")
+	archivePath := filepath.Join(repository.DatastorePath(), gameID, "data.tar.gz")
 
 	return cli.Pull(gameID, archivePath)
 }

cmd/cli/commands/version/version.go

@@ -3,7 +3,7 @@ package version
 import (
 	"cloudsave/pkg/constants"
 	"cloudsave/pkg/remote/client"
-	"cloudsave/pkg/tools/prompt/credentials"
+	"cloudsave/cmd/cli/tools/prompt/credentials"
 	"context"
 	"flag"
 	"fmt"

cmd/server/api/api.go

@@ -2,7 +2,7 @@ package api
 
 import (
 	"cloudsave/cmd/server/data"
-	"cloudsave/pkg/game"
+	"cloudsave/pkg/repository"
 	"crypto/md5"
 	"encoding/hex"
 	"encoding/json"
@@ -61,6 +61,7 @@ func NewServer(documentRoot string, creds map[string]string, port int) *HTTPServ
 					// Data routes
 					gamesRouter.Group(func(saveRouter chi.Router) {
 						saveRouter.Post("/{id}/data", s.upload)
+						saveRouter.Post("/{id}/hist/data", s.histUpload)
 						saveRouter.Get("/{id}/data", s.download)
 						saveRouter.Get("/{id}/hash", s.hash)
 						saveRouter.Get("/{id}/metadata", s.metadata)
@@ -78,7 +79,7 @@ func NewServer(documentRoot string, creds map[string]string, port int) *HTTPServ
 
 func (s HTTPServer) all(w http.ResponseWriter, r *http.Request) {
 	path := filepath.Join(s.documentRoot, "data")
-	datastore := make([]game.Metadata, 0)
+	datastore := make([]repository.Metadata, 0)
 
 	if _, err := os.Stat(path); err != nil {
 		if errors.Is(err, os.ErrNotExist) {
@@ -104,7 +105,7 @@ func (s HTTPServer) all(w http.ResponseWriter, r *http.Request) {
 			continue
 		}
 
-		var m game.Metadata
+		var m repository.Metadata
 		err = json.Unmarshal(content, &m)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "corrupted datastore: failed to parse %s/metadata.json: %s", d.Name(), err)
@@ -209,6 +210,49 @@ func (s HTTPServer) upload(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusCreated)
 }
 
+func (s HTTPServer) histUpload(w http.ResponseWriter, r *http.Request) {
+	const (
+		sizeLimit int64 = 500 << 20 // 500 MB
+	)
+
+	id := chi.URLParam(r, "id")
+	dt, err := formParseDate("date", r.MultipartForm.Value)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to load payload:", err)
+		badRequest("bad payload", w, r)
+		return
+	}
+
+	// Limit max upload size
+	r.Body = http.MaxBytesReader(w, r.Body, sizeLimit)
+
+	// Parse multipart form
+	err = r.ParseMultipartForm(sizeLimit)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to load payload:", err)
+		badRequest("bad payload", w, r)
+		return
+	}
+
+	// Retrieve file
+	file, _, err := r.FormFile("payload")
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: cannot find payload in the form:", err)
+		badRequest("payload not found", w, r)
+		return
+	}
+	defer file.Close()
+
+	if err := data.WriteHist(id, s.documentRoot, dt, file); err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to write file to disk:", err)
+		internalServerError(w, r)
+		return
+	}
+
+	// Respond success
+	w.WriteHeader(http.StatusCreated)
+}
+
 func (s HTTPServer) hash(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	path := filepath.Clean(filepath.Join(s.documentRoot, "data", id))
@@ -272,7 +316,7 @@ func (s HTTPServer) metadata(w http.ResponseWriter, r *http.Request) {
 	}
 	defer f.Close()
 
-	var metadata game.Metadata
+	var metadata repository.Metadata
 	d := json.NewDecoder(f)
 	err = d.Decode(&metadata)
 	if err != nil {
@@ -284,49 +328,67 @@ func (s HTTPServer) metadata(w http.ResponseWriter, r *http.Request) {
 	ok(metadata, w, r)
 }
 
-func parseFormMetadata(gameID string, values map[string][]string) (game.Metadata, error) {
+func parseFormMetadata(gameID string, values map[string][]string) (repository.Metadata, error) {
 	var name string
 	if v, ok := values["name"]; ok {
 		if len(v) == 0 {
-			return game.Metadata{}, fmt.Errorf("error: corrupted metadata")
+			return repository.Metadata{}, fmt.Errorf("error: corrupted metadata")
 		}
 		name = v[0]
 	} else {
-		return game.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
+		return repository.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
 	}
 
 	var version int
 	if v, ok := values["version"]; ok {
 		if len(v) == 0 {
-			return game.Metadata{}, fmt.Errorf("error: corrupted metadata")
+			return repository.Metadata{}, fmt.Errorf("error: corrupted metadata")
 		}
 		if v, err := strconv.Atoi(v[0]); err == nil {
 			version = v
 		} else {
-			return game.Metadata{}, err
+			return repository.Metadata{}, err
 		}
 	} else {
-		return game.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
+		return repository.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
 	}
 
 	var date time.Time
 	if v, ok := values["date"]; ok {
 		if len(v) == 0 {
-			return game.Metadata{}, fmt.Errorf("error: corrupted metadata")
+			return repository.Metadata{}, fmt.Errorf("error: corrupted metadata")
 		}
 		if v, err := time.Parse(time.RFC3339, v[0]); err == nil {
 			date = v
 		} else {
-			return game.Metadata{}, err
+			return repository.Metadata{}, err
 		}
 	} else {
-		return game.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
+		return repository.Metadata{}, fmt.Errorf("error: cannot find metadata in the form")
 	}
 
-	return game.Metadata{
+	return repository.Metadata{
 		ID:      gameID,
 		Version: version,
 		Name:    name,
 		Date:    date,
 	}, nil
 }
+
+func formParseDate(key string, values map[string][]string) (time.Time, error) {
+	var date time.Time
+	if v, ok := values[key]; ok {
+		if len(v) == 0 {
+			return time.Time{}, fmt.Errorf("error: corrupted metadata")
+		}
+		if v, err := time.Parse(time.RFC3339, v[0]); err == nil {
+			date = v
+		} else {
+			return time.Time{}, err
+		}
+	} else {
+		return time.Time{}, fmt.Errorf("error: cannot find metadata in the form")
+	}
+
+	return date, nil
+}

cmd/server/data/data.go

@@ -1,12 +1,13 @@
 package data
 
 import (
-	"cloudsave/pkg/game"
+	"cloudsave/pkg/repository"
 	"encoding/json"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
+	"time"
 )
 
 func Write(gameID, documentRoot string, r io.Reader) error {
@@ -39,7 +40,37 @@ func Write(gameID, documentRoot string, r io.Reader) error {
 	return nil
 }
 
-func UpdateMetadata(gameID, documentRoot string, m game.Metadata) error {
+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")
+
+	if err := makeDataFolder(gameID, documentRoot); 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 repository.Metadata) error {
 	if err := makeDataFolder(gameID, documentRoot); err != nil {
 		return err
 	}
@@ -56,5 +87,13 @@ func UpdateMetadata(gameID, documentRoot string, m game.Metadata) error {
 }
 
 func makeDataFolder(gameID, documentRoot string) error {
-	return os.MkdirAll(filepath.Join(documentRoot, "data", gameID), 0740)
+	if err := os.MkdirAll(filepath.Join(documentRoot, "data", gameID), 0740); err != nil {
+		return err
+	}
+
+	if err := os.MkdirAll(filepath.Join(documentRoot, "data", gameID, "hist"), 0740); err != nil {
+		return err
+	}
+
+	return nil
 }

pkg/constants/constants.go

@@ -1,5 +1,5 @@
 package constants
 
-const Version = "0.0.1"
+const Version = "0.0.2"
 
 const ApiVersion = 1

pkg/remote/client/client.go

@@ -2,8 +2,8 @@ package client
 
 import (
 	"bytes"
-	"cloudsave/pkg/game"
 	"cloudsave/pkg/remote/obj"
+	"cloudsave/pkg/repository"
 	customtime "cloudsave/pkg/tools/time"
 	"encoding/json"
 	"errors"
@@ -117,19 +117,19 @@ func (c *Client) Hash(gameID string) (string, error) {
 	return "", errors.New("invalid payload sent by the server")
 }
 
-func (c *Client) Metadata(gameID string) (game.Metadata, error) {
+func (c *Client) Metadata(gameID string) (repository.Metadata, error) {
 	u, err := url.JoinPath(c.baseURL, "api", "v1", "games", gameID, "metadata")
 	if err != nil {
-		return game.Metadata{}, err
+		return repository.Metadata{}, err
 	}
 
 	o, err := c.get(u)
 	if err != nil {
-		return game.Metadata{}, err
+		return repository.Metadata{}, err
 	}
 
 	if m, ok := (o.Data).(map[string]any); ok {
-		gm := game.Metadata{
+		gm := repository.Metadata{
 			ID:      m["id"].(string),
 			Name:    m["name"].(string),
 			Version: int(m["version"].(float64)),
@@ -138,10 +138,10 @@ func (c *Client) Metadata(gameID string) (game.Metadata, error) {
 		return gm, nil
 	}
 
-	return game.Metadata{}, errors.New("invalid payload sent by the server")
+	return repository.Metadata{}, errors.New("invalid payload sent by the server")
 }
 
-func (c *Client) Push(gameID, archivePath string, m game.Metadata) error {
+func (c *Client) Push(gameID, archivePath string, m repository.Metadata) error {
 	u, err := url.JoinPath(c.baseURL, "api", "v1", "games", gameID, "data")
 	if err != nil {
 		return err
@@ -271,7 +271,7 @@ func (c *Client) Ping() error {
 	return nil
 }
 
-func (c *Client) All() ([]game.Metadata, error) {
+func (c *Client) All() ([]repository.Metadata, error) {
 	u, err := url.JoinPath(c.baseURL, "api", "v1", "games")
 	if err != nil {
 		return nil, err
@@ -283,10 +283,10 @@ func (c *Client) All() ([]game.Metadata, error) {
 	}
 
 	if games, ok := (o.Data).([]any); ok {
-		var res []game.Metadata
+		var res []repository.Metadata
 		for _, g := range games {
 			if v, ok := g.(map[string]any); ok {
-				gm := game.Metadata{
+				gm := repository.Metadata{
 					ID:      v["id"].(string),
 					Name:    v["name"].(string),
 					Version: int(v["version"].(float64)),

pkg/repository/repository.go

@@ -1,4 +1,4 @@
-package game
+package repository
 
 import (
 	"cloudsave/pkg/tools/id"
@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"time"
@@ -135,6 +136,65 @@ func One(gameID string) (Metadata, error) {
 	return m, nil
 }
 
+func Archive(gameID string) error {
+	path := filepath.Join(datastorepath, gameID, "data.tar.gz")
+
+	// open old
+	f, err := os.OpenFile(path, os.O_RDONLY, 0)
+	if err != nil {
+		return fmt.Errorf("failed to open old file: %w", err)
+	}
+	defer f.Close()
+
+	histDirPath := filepath.Join(datastorepath, gameID, "hist")
+	if err := os.MkdirAll(histDirPath, 0740); err != nil {
+		return fmt.Errorf("failed to make 'hist' directory")
+	}
+
+	d, err := os.ReadDir(histDirPath)
+	if err != nil {
+		return fmt.Errorf("failed to open 'hist' directory")
+	}
+
+	// keep the dir under 6 files
+	if len(d) > 5 {
+		var oldest *fs.FileInfo
+		for _, hfile := range d {
+			finfo, err := hfile.Info()
+			if err != nil {
+				return fmt.Errorf("failed to read backup file: %w", err)
+			}
+
+			if oldest == nil {
+				oldest = &finfo
+				continue
+			}
+
+			if finfo.ModTime().Before((*oldest).ModTime()) {
+				oldest = &finfo
+			}
+		}
+
+		if err := os.Remove((*oldest).Name()); err != nil {
+			return fmt.Errorf("failed to remove the oldest backup file: %w", err)
+		}
+	}
+
+	// open new
+	nf, err := os.OpenFile(filepath.Join(datastorepath, gameID, "hist", time.Now().Format("2006-01-02T15-04-05Z07-00")+".data.tar.gz"), os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0740)
+	if err != nil {
+		return fmt.Errorf("failed to open new file: %w", err)
+	}
+	defer nf.Close()
+
+	// copy
+	if _, err := io.Copy(nf, f); err != nil {
+		return fmt.Errorf("failed to copy data: %w", err)
+	}
+
+	return nil
+}
+
 func DatastorePath() string {
 	return datastorepath
 }

pkg/tools/archive/archive.go

@@ -3,6 +3,7 @@ package archive
 import (
 	"archive/tar"
 	"compress/gzip"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
@@ -71,3 +72,49 @@ func Untar(file io.Reader, path string) error {
 		}
 	}
 }
+
+func Tar(file io.Writer, path string) error {
+	gw := gzip.NewWriter(file)
+	defer gw.Close()
+
+	tw := tar.NewWriter(gw)
+	defer tw.Close()
+
+	// Walk again to add files
+	err := filepath.Walk(path, func(path string, info os.FileInfo, walkErr error) error {
+		if walkErr != nil {
+			return walkErr
+		}
+		// Create tar header
+		header, err := tar.FileInfoHeader(info, path)
+		if err != nil {
+			return err
+		}
+		// Preserve directory structure relative to srcDir
+		relPath, err := filepath.Rel(filepath.Dir(path), path)
+		if err != nil {
+			return err
+		}
+		header.Name = relPath
+
+		if err := tw.WriteHeader(header); err != nil {
+			return err
+		}
+		if info.Mode().IsRegular() {
+			file, err := os.Open(path)
+			if err != nil {
+				return err
+			}
+			defer file.Close()
+			if _, err := io.Copy(tw, file); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("writing tar entries: %w", err)
+	}
+
+	return nil
+}