refactor: replace can_upload boolean with role-based access control

Introduces a three-tier role hierarchy: reader < uploader < admin.

- internal/users/role.go: Role type, roleLevel map, AtLeast(min),
  ParseRole() — new roles added by inserting into roleLevel only
- internal/users/store.go: versioned migrations via _schema_version table;
  v2 migration adds 'role' column and migrates existing can_upload data;
  SetRole() replaces SetUpload(); Session carries Role instead of CanUpload
- internal/web/middleware.go: generic requireRole(minRole) middleware
  replaces the ad-hoc requireUpload
- internal/web/handlers.go: upload routes use requireRole(RoleUploader);
  listBooks derives canUpload from sess.Role.AtLeast(RoleUploader)
- cmd/admin/main.go: user add --role <reader|uploader|admin>,
  user set-role replaces user set-upload
- README, copilot-instructions updated

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
2026-08-11 19:43:39 +02:00
co-authored by Copilot
parent a66c370de4
commit 817763887a
7 changed files with 201 additions and 107 deletions
+4 -2
View File
@@ -65,11 +65,13 @@ Alternativ können Benutzer mit Upload-Recht Bücher direkt im Browser hochladen
## Benutzerverwaltung (CLI)
Rollen (aufsteigend): `reader``uploader``admin`
```bash
go run ./cmd/admin user add <name> [--role reader|uploader|admin]
go run ./cmd/admin user list
go run ./cmd/admin user add <name> [--upload]
go run ./cmd/admin user delete <name>
go run ./cmd/admin user set-upload <name> <true|false>
go run ./cmd/admin user set-role <name> <reader|uploader|admin>
```
## Konfiguration