Oauth. Car Backups.

data/models/pds.go

@@ -25,6 +25,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"io"
 	"os"
 	"slices"
 	"time"
@@ -104,6 +105,32 @@ func NewPdsFromDid(id string) (*Pds, error) {
 	return ret, ret.unpack()
 }
 
+func (p *Pds) Backup() (string, int64, error) {
+	carPath := helpers.Path(viper.GetString("data"), p.Did.String()+".car")
+	srcStat, err := os.Stat(carPath)
+	if err != nil {
+		return "", 0, fmt.Errorf("car file not found: %w", err)
+	}
+	if !srcStat.Mode().IsRegular() {
+		return "", 0, fmt.Errorf("%s is not a regular file", carPath)
+	}
+	source, err := os.Open(carPath)
+	if err != nil {
+		return "", 0, fmt.Errorf("error opening car file: %w", err)
+	}
+	defer source.Close()
+
+	bkupName := fmt.Sprintf("%s%s.car", p.Did.String(), time.Now().Format("20060102150405"))
+	bkupPath := helpers.Path(viper.GetString("backup"), bkupName)
+	dest, err := os.Create(bkupPath)
+	if err != nil {
+		return "", 0, fmt.Errorf("error creating backup file: %w", err)
+	}
+	defer dest.Close()
+	bt, err := io.Copy(dest, source)
+	return bkupName, bt, err
+}
+
 func (p *Pds) unpack() error {
 	ctx := context.Background()
 	fi, err := os.Open(p.localPath)