supporting snaps

fpakman/core/flatpak/controller.py

@@ -0,0 +1,150 @@
+import os
+import shutil
+from argparse import Namespace
+from datetime import datetime
+from typing import List, Dict
+
+from fpakman.core import disk
+from fpakman.core.controller import ApplicationManager
+from fpakman.core.disk import DiskCacheLoader
+from fpakman.core.flatpak import flatpak
+from fpakman.core.flatpak.model import FlatpakApplication
+from fpakman.core.flatpak.worker import FlatpakAsyncDataLoader
+from fpakman.core.model import ApplicationData
+from fpakman.core.system import FpakmanProcess
+from fpakman.util.cache import Cache
+
+
+class FlatpakManager(ApplicationManager):
+
+    def __init__(self, app_args: Namespace, api_cache: Cache, disk_cache: bool, http_session):
+        super(FlatpakManager, self).__init__(app_args=app_args)
+        self.api_cache = api_cache
+        self.http_session = http_session
+        self.disk_cache = disk_cache
+
+    def get_app_type(self):
+        return FlatpakApplication
+
+    def _map_to_model(self, app_json: dict, installed: bool, disk_loader: DiskCacheLoader) -> FlatpakApplication:
+
+        app = FlatpakApplication(arch=app_json.get('arch'),
+                                 branch=app_json.get('branch'),
+                                 origin=app_json.get('origin'),
+                                 runtime=app_json.get('runtime'),
+                                 ref=app_json.get('ref'),
+                                 commit=app_json.get('commit'),
+                                 base_data=ApplicationData(id=app_json.get('id'),
+                                                           name=app_json.get('name'),
+                                                           version=app_json.get('version'),
+                                                           latest_version=app_json.get('latest_version')))
+        app.installed = installed
+
+        api_data = self.api_cache.get(app_json['id'])
+
+        expired_data = api_data and api_data.get('expires_at') and api_data['expires_at'] <= datetime.utcnow()
+
+        if not api_data or expired_data:
+            if not app_json['runtime']:
+                disk_loader.add(app)  # preloading cached disk data
+                FlatpakAsyncDataLoader(app=app, api_cache=self.api_cache, manager=self, http_session=self.http_session).start()
+
+        else:
+            app.fill_cached_data(api_data)
+
+        return app
+
+    def search(self, word: str, disk_loader: DiskCacheLoader) -> Dict[str, List[FlatpakApplication]]:
+
+        res = {'installed': [], 'new': []}
+        apps_found = flatpak.search(word)
+
+        if apps_found:
+            already_read = set()
+            installed_apps = self.read_installed(disk_loader=disk_loader)
+
+            if installed_apps:
+                for app_found in apps_found:
+                    for installed_app in installed_apps:
+                        if app_found['id'] == installed_app.base_data.id:
+                            res['installed'].append(installed_app)
+                            already_read.add(app_found['id'])
+
+            if len(apps_found) > len(already_read):
+                for app_found in apps_found:
+                    if app_found['id'] not in already_read:
+                        res['new'].append(self._map_to_model(app_found, False, disk_loader))
+
+        return res
+
+    def read_installed(self, disk_loader: DiskCacheLoader) -> List[FlatpakApplication]:
+        installed = flatpak.list_installed()
+        models = []
+
+        if installed:
+
+            available_updates = flatpak.list_updates_as_str()
+
+            for app_json in installed:
+                model = self._map_to_model(app_json=app_json, installed=True, disk_loader=disk_loader)
+                model.update = app_json['id'] in available_updates
+                models.append(model)
+
+        return models
+
+    def can_downgrade(self):
+        return True
+
+    def downgrade_app(self, app: FlatpakApplication, root_password: str) -> FpakmanProcess:
+
+        commits = flatpak.get_app_commits(app.ref, app.origin)
+
+        commit_idx = commits.index(app.commit)
+
+        # downgrade is not possible if the app current commit in the first one:
+        if commit_idx == len(commits) - 1:
+            return None
+
+        return FpakmanProcess(subproc=flatpak.downgrade_and_stream(app.ref, commits[commit_idx + 1], root_password),
+                              success_phrase='Updates complete.')
+
+    def clean_cache_for(self, app: FlatpakApplication):
+        self.api_cache.delete(app.base_data.id)
+
+        if app.supports_disk_cache() and os.path.exists(app.get_disk_cache_path()):
+            shutil.rmtree(app.get_disk_cache_path())
+
+    def update_and_stream(self, app: FlatpakApplication) -> FpakmanProcess:
+        return FpakmanProcess(subproc=flatpak.update_and_stream(app.ref))
+
+    def uninstall_and_stream(self, app: FlatpakApplication, root_password: str = None) -> FpakmanProcess:
+        return FpakmanProcess(subproc=flatpak.uninstall_and_stream(app.ref))
+
+    def get_info(self, app: FlatpakApplication) -> dict:
+        app_info = flatpak.get_app_info_fields(app.base_data.id, app.branch)
+        app_info['name'] = app.base_data.name
+        app_info['type'] = 'runtime' if app.runtime else 'app'
+        app_info['description'] = app.base_data.description
+        return app_info
+
+    def get_history(self, app: FlatpakApplication) -> List[dict]:
+        return flatpak.get_app_commits_data(app.ref, app.origin)
+
+    def install_and_stream(self, app: FlatpakApplication, root_password: str) -> FpakmanProcess:
+        return FpakmanProcess(subproc=flatpak.install_and_stream(app.base_data.id, app.origin))
+
+    def is_enabled(self):
+        return flatpak.is_installed()
+
+    def cache_to_disk(self, app: FlatpakApplication, icon_bytes: bytes, only_icon: bool):
+        if self.disk_cache and app.supports_disk_cache():
+            disk.save(app, icon_bytes, only_icon)
+
+    def requires_root(self, action: str, app: FlatpakApplication):
+        return action == 'downgrade'
+
+    def refresh(self, app: FlatpakApplication, root_password: str) -> FpakmanProcess:
+        raise Exception("'refresh' is not supported for {}".format(app.__class__.__name__))
+
+    def prepare(self):
+        flatpak.set_default_remotes()