Umstellung auf uuid

internal/filesvc/store.go

@@ -2,13 +2,15 @@ package filesvc
 
 import (
 	"context"
+	"crypto/rand"
 	"errors"
+	"fmt"
 	"time"
 )
 
 /*** Domain ***/
 
-type ID = int64
+type ID = string
 
 type File struct {
 	ID   ID     `json:"id"`
@@ -76,3 +78,13 @@ type MeshStore interface {
 	Replicable
 	Watchable // optional – kann Noop sein
 }
+
+func NewUUIDv4() (string, error) {
+	b := make([]byte, 16)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	b[6] = (b[6] & 0x0f) | 0x40 // Version 4
+	b[8] = (b[8] & 0x3f) | 0x80 // Variant RFC4122
+	return fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:16]), nil
+}