[snap] feature -> new custom action 'change channel'

CHANGELOG.md

@@ -34,6 +34,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
             <img src="https://raw.githubusercontent.com/vinifmor/bauh-files/master/pictures/releases/0.9.7/snap_channels.png">
      </p>
      
+     - new custom action **Change channel**: allows to change the current channel of an installed Snap
+     <p align="center">
+            <img src="https://raw.githubusercontent.com/vinifmor/bauh-files/master/pictures/releases/0.9.7/snap_change_channel.png">
+     </p>
+
 ### Improvements
 - AppImage
     - Manual file installation/upgrade:

README.md

@@ -119,7 +119,9 @@ installation_level: null # defines a default installation level: user or system.
 #### Snap (snap)
 
 - Supported actions: search, install, uninstall, launch, downgrade
-- Custom actions: refresh
+- Custom actions: 
+    - refresh: tries to update the current Snap application revision
+    - change channel: allows to change the Snap application channel
 - The configuration file is located at **~/.config/bauh/snap.yml** and it allows the following customizations:
 ```
 install_channel: false  # it allows to select an available channel during the application installation. Default: false

bauh/gems/snap/controller.py

@@ -12,6 +12,7 @@ from bauh.api.abstract.model import SoftwarePackage, PackageHistory, PackageUpda
     SuggestionPriority, CustomSoftwareAction, PackageStatus
 from bauh.api.abstract.view import SingleSelectComponent, SelectViewType, InputOption, ViewComponent, PanelComponent, \
     FormComponent
+from bauh.api.exception import NoInternetException
 from bauh.commons import resource, internet
 from bauh.commons.category import CategoriesDownloader
 from bauh.commons.config import save_config
@@ -47,7 +48,13 @@ class SnapManager(SoftwareManager):
                                  icon_path=resource.get_path('img/refresh.svg', context.get_view_path()),
                                  manager_method='refresh',
                                  requires_root=True,
-                                 i18n_confirm_key='snap.action.refresh.confirm')
+                                 i18n_confirm_key='snap.action.refresh.confirm'),
+            CustomSoftwareAction(i18n_status_key='snap.action.channel.status',
+                                 i18n_label_key='snap.action.channel.label',
+                                 i18n_confirm_key='snap.action.channel.confirm',
+                                 icon_path=resource.get_path('img/refresh.svg', context.get_view_path()),
+                                 manager_method='change_channel',
+                                 requires_root=True)
         ]
 
     def _fill_categories(self, app: SnapApplication):
@@ -253,6 +260,28 @@ class SnapManager(SoftwareManager):
     def refresh(self, pkg: SnapApplication, root_password: str, watcher: ProcessWatcher) -> bool:
         return ProcessHandler(watcher).handle_simple(snap.refresh_and_stream(pkg.name, root_password))[0]
 
+    def change_channel(self, pkg: SnapApplication, root_password: str, watcher: ProcessWatcher) -> bool:
+        if not internet.is_available():
+            raise NoInternetException()
+
+        try:
+            channel = self._request_channel_installation(pkg=pkg,
+                                                         snap_config=None,
+                                                         snapd_client=SnapdClient(self.logger),
+                                                         watcher=watcher,
+                                                         exclude_current=True)
+
+            if not channel:
+                watcher.show_message(title=self.i18n['snap.action.channel.label'],
+                                     body=self.i18n['snap.action.channel.error.no_channel'])
+                return True
+
+            return ProcessHandler(watcher).handle_simple(snap.refresh_and_stream(app_name=pkg.name,
+                                                                                 root_password=root_password,
+                                                                                 channel=channel))[0]
+        except:
+            return True
+
     def _start_category_task(self, task_man: TaskManager):
         if task_man:
             task_man.register_task('snap_cats', self.i18n['task.download_categories'].format('Snap'), get_icon_path())
@@ -425,8 +454,8 @@ class SnapManager(SoftwareManager):
         except:
             return False, [traceback.format_exc()]
 
-    def _request_channel_installation(self, pkg: SnapApplication, snap_config: dict, snapd_client: SnapdClient, watcher: ProcessWatcher) -> Optional[str]:
+    def _request_channel_installation(self, pkg: SnapApplication, snap_config: Optional[dict], snapd_client: SnapdClient, watcher: ProcessWatcher, exclude_current: bool = False) -> Optional[str]:
-        if snap_config['install_channel']:
+        if snap_config is None or snap_config['install_channel']:
             try:
                 data = [r for r in snapd_client.find_by_name(pkg.name) if r['name'] == pkg.name]
             except:
@@ -439,11 +468,31 @@ class SnapManager(SoftwareManager):
                 if not data[0].get('channels'):
                     self.logger.info("No channel available for '{}'. Skipping selection.".format(pkg.name))
                 else:
-                    opts = [InputOption(label=c, value=c) for c in sorted(data[0]['channels'].keys())]
+                    if pkg.channel:
-                    def_opt = [o for o in opts if o.value == 'latest/{}'.format(data[0].get('channel', 'stable'))]
+                        current_channel = pkg.channel if '/' in pkg.channel else 'latest/{}'.format(pkg.channel)
+                    else:
+                        current_channel = 'latest/{}'.format(data[0].get('channel', 'stable'))
+
+                    opts = []
+                    def_opt = None
+                    for channel in sorted(data[0]['channels'].keys()):
+                        if exclude_current:
+                            if channel != current_channel:
+                                opts.append(InputOption(label=channel, value=channel))
+                        else:
+                            op = InputOption(label=channel, value=channel)
+                            opts.append(op)
+
+                            if not def_opt and channel == current_channel:
+                                def_opt = op
+
+                    if not opts:
+                        self.logger.info("No different channel available for '{}'. Skipping selection.".format(pkg.name))
+                        return
+
                     select = SingleSelectComponent(label='',
                                                    options=opts,
-                                                   default_option=def_opt[0] if def_opt else opts[0],
+                                                   default_option=def_opt if def_opt else opts[0],
                                                    type_=SelectViewType.RADIO)
 
                     if not watcher.request_confirmation(title=self.i18n['snap.install.available_channels.title'],

bauh/gems/snap/resources/locale/ca

@@ -1,4 +1,8 @@
 gem.snap.info=Aplicacions publicades a https://snapcraft.io/store
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Actualitza {} ?
 snap.action.refresh.label=Actualitza
 snap.action.refresh.status=S’està actualitzant

bauh/gems/snap/resources/locale/de

@@ -1,4 +1,8 @@
 gem.snap.info=Anwendungen von https://snapcraft.io/store
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Erneuern {} ?
 snap.action.refresh.label=Erneuern
 snap.action.refresh.status=Erneuern

bauh/gems/snap/resources/locale/en

@@ -1,4 +1,8 @@
 gem.snap.info=Applications published at https://snapcraft.io/store
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Refresh {} ?
 snap.action.refresh.label=Refresh
 snap.action.refresh.status=Refreshing

bauh/gems/snap/resources/locale/es

@@ -1,4 +1,8 @@
 gem.snap.info=Aplicativos publicados en https://snapcraft.io/store
+snap.action.channel.confirm=Cambiar canal de {}?
+snap.action.channel.error.no_channel=No hay canal disponible para {}
+snap.action.channel.status=Cambiando canal
+snap.action.channel.label=Cambiar canal
 snap.action.refresh.confirm=Actualizar {} ?
 snap.action.refresh.label=Actualizar
 snap.action.refresh.status=Actualizando

bauh/gems/snap/resources/locale/it

@@ -1,4 +1,8 @@
 gem.snap.info=Applicazioni pubblicate su https://snapcraft.io/store
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Ripristina {} ?
 snap.action.refresh.label=Ripristina
 snap.action.refresh.status=Ripristinare

bauh/gems/snap/resources/locale/pt

@@ -1,4 +1,8 @@
 gem.snap.info=Aplicativos publicados em https://snapcraft.io/store
+snap.action.channel.confirm=Alterar canal de {} ?
+snap.action.channel.error.no_channel=Nenhum canal disponível para {}
+snap.action.channel.label=Alterar canal
+snap.action.channel.status=Alterando canal
 snap.action.refresh.confirm=Atualizar {} ?
 snap.action.refresh.label=Atualizar
 snap.action.refresh.status=Atualizando

bauh/gems/snap/resources/locale/ru

@@ -1,4 +1,8 @@
 gem.snap.info=Приложения, опубликованные на https://snapcraft.io/store
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Обновить {} ?
 snap.action.refresh.label=Обновить
 snap.action.refresh.status=Обновляется

bauh/gems/snap/resources/locale/tr

@@ -1,4 +1,8 @@
 gem.snap.info=https://snapcraft.io/store adresinde yayınlanan uygulamalar
+snap.action.channel.confirm=Change channel of {} ?
+snap.action.channel.error.no_channel=No available channel for {}
+snap.action.channel.label=Change channel
+snap.action.channel.status=Changing channel
 snap.action.refresh.confirm=Yenile {} ?
 snap.action.refresh.label=Yenile
 snap.action.refresh.status=Yenileniyor

bauh/gems/snap/snap.py

@@ -37,8 +37,13 @@ def downgrade_and_stream(app_name: str, root_password: str) -> SimpleProcess:
                          shell=True)
 
 
-def refresh_and_stream(app_name: str, root_password: str) -> SimpleProcess:
+def refresh_and_stream(app_name: str, root_password: str, channel: Optional[str] = None) -> SimpleProcess:
-    return SimpleProcess(cmd=[BASE_CMD, 'refresh', app_name],
+    cmd = [BASE_CMD, 'refresh', app_name]
+
+    if channel:
+        cmd.append('--channel={}'.format(channel))
+
+    return SimpleProcess(cmd=cmd,
                          root_password=root_password,
                          error_phrases={'no updates available'},
                          shell=True)

bauh/view/qt/apps_table.py

@@ -11,7 +11,7 @@ from PyQt5.QtWidgets import QTableWidget, QTableView, QMenu, QAction, QTableWidg
     QHeaderView, QLabel, QHBoxLayout, QToolBar, QSizePolicy
 
 from bauh.api.abstract.cache import MemoryCache
-from bauh.api.abstract.model import PackageStatus
+from bauh.api.abstract.model import PackageStatus, CustomSoftwareAction
 from bauh.commons.html import strip_html, bold
 from bauh.view.qt import dialog
 from bauh.view.qt.colors import GREEN, BROWN
@@ -166,31 +166,34 @@ class AppsTable(QTableWidget):
                 menu_row.addAction(action_ignore_updates)
 
         if bool(pkg.model.get_custom_supported_actions()):
-            for action in pkg.model.get_custom_supported_actions():
+            actions = [self._map_custom_action(pkg, a) for a in pkg.model.get_custom_supported_actions()]
-                item = QAction(self.i18n[action.i18n_label_key])
+            menu_row.addActions(actions)
-
-                if action.icon_path:
-                    item.setIcon(QIcon(action.icon_path))
-
-                def custom_action():
-                    if action.i18n_confirm_key:
-                        body = self.i18n[action.i18n_confirm_key].format(bold(pkg.model.name))
-                    else:
-                        body = '{} ?'.format(self.i18n[action.i18n_label_key])
-
-                    if dialog.ask_confirmation(
-                            title=self.i18n[action.i18n_label_key],
-                            body=self._parag(body),
-                            i18n=self.i18n):
-                        self.window.begin_execute_custom_action(pkg, action)
-
-                item.triggered.connect(custom_action)
-                menu_row.addAction(item)
 
         menu_row.adjustSize()
         menu_row.popup(QCursor.pos())
         menu_row.exec_()
 
+    def _map_custom_action(self, pkg: PackageView, action: CustomSoftwareAction) -> QAction:
+        item = QAction(self.i18n[action.i18n_label_key])
+
+        if action.icon_path:
+            item.setIcon(QIcon(action.icon_path))
+
+        def custom_action():
+            if action.i18n_confirm_key:
+                body = self.i18n[action.i18n_confirm_key].format(bold(pkg.model.name))
+            else:
+                body = '{} ?'.format(self.i18n[action.i18n_label_key])
+
+            if dialog.ask_confirmation(
+                    title=self.i18n[action.i18n_label_key],
+                    body=self._parag(body),
+                    i18n=self.i18n):
+                self.window.begin_execute_custom_action(pkg, action)
+
+        item.triggered.connect(custom_action)
+        return item
+
     def refresh(self, pkg: PackageView):
         self._update_row(pkg, update_check_enabled=False, change_update_col=False)