def downgrade(self, pkg: FlatpakApplication, root_password: str,
watcher: ProcessWatcher) -> bool:
if not self._make_exports_dir(watcher):
return False
watcher.change_progress(10)
watcher.change_substatus(self.i18n['flatpak.downgrade.commits'])
history = self.get_history(pkg, full_commit_str=True)
# downgrade is not possible if the app current commit in the first one:
if history.pkg_status_idx == len(history.history) - 1:
watcher.show_message(
self.i18n['flatpak.downgrade.impossible.title'],
self.i18n['flatpak.downgrade.impossible.body'].format(
bold(pkg.name)), MessageType.ERROR)
return False
commit = history.history[history.pkg_status_idx + 1]['commit']
watcher.change_substatus(self.i18n['flatpak.downgrade.reverting'])
watcher.change_progress(50)
success, _ = ProcessHandler(watcher).handle_simple(
flatpak.downgrade(pkg.ref, commit, pkg.installation,
root_password))
watcher.change_progress(100)
return success
def downgrade(self, pkg: FlatpakApplication, root_password: str,
watcher: ProcessWatcher) -> bool:
handler = ProcessHandler(watcher)
pkg.commit = flatpak.get_commit(pkg.id, pkg.branch, pkg.installation)
watcher.change_progress(10)
watcher.change_substatus(self.i18n['flatpak.downgrade.commits'])
commits = flatpak.get_app_commits(pkg.ref, pkg.origin,
pkg.installation, handler)
if commits is None:
return False
commit_idx = commits.index(pkg.commit)
# downgrade is not possible if the app current commit in the first one:
if commit_idx == len(commits) - 1:
watcher.show_message(
self.i18n['flatpak.downgrade.impossible.title'],
self.i18n['flatpak.downgrade.impossible.body'],
MessageType.WARNING)
return False
commit = commits[commit_idx + 1]
watcher.change_substatus(self.i18n['flatpak.downgrade.reverting'])
watcher.change_progress(50)
success = handler.handle(
SystemProcess(
subproc=flatpak.downgrade(pkg.ref, commit, pkg.installation,
root_password),
success_phrases=['Changes complete.', 'Updates complete.'],
wrong_error_phrase='Warning'))
watcher.change_progress(100)
return success