[appimage][feature] downloading db files from github

CHANGELOG.md

@@ -7,7 +7,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [0.7.0]
 ### Features
 - AppImage support ( see below )
-- "Screenshots" button
+- **Screenshots** button
+- **Categories** filter
 
 ### Improvements
 - Flatpak:

bauh/gems/appimage/controller.py

@@ -19,6 +19,7 @@ from bauh.commons.html import bold
 from bauh.commons.system import SystemProcess, new_subprocess, ProcessHandler, run_cmd
 from bauh.gems.appimage import query, INSTALLATION_PATH
 from bauh.gems.appimage.model import AppImage
+from bauh.gems.appimage.worker import DatabaseUpdater
 
 DB_APPS_PATH = '{}/{}'.format(HOME_PATH, '.local/share/bauh/appimage/apps.db')
 DB_RELEASES_PATH = '{}/{}'.format(HOME_PATH, '.local/share/bauh/appimage/releases.db')
@@ -41,6 +42,7 @@ class AppImageManager(SoftwareManager):
         self.http_client = context.http_client
         self.logger = context.logger
         self.file_downloader = context.file_downloader
+        self.dbs_updater = DatabaseUpdater(http_client=context.http_client, logger=context.logger)
 
     def _get_db_connection(self, db_path: str) -> sqlite3.Connection:
         if os.path.exists(db_path):
@@ -335,8 +337,7 @@ class AppImageManager(SoftwareManager):
         return False
 
     def prepare(self):
-        # TODO
-        pass
+        self.dbs_updater.start()
 
     def list_updates(self, internet_available: bool) -> List[PackageUpdate]:
         # TODO

bauh/gems/appimage/worker.py

@@ -0,0 +1,52 @@
+import logging
+import os
+import time
+from multiprocessing import Process
+from threading import Thread
+
+from bauh.api.http import HttpClient
+
+
+class DatabaseUpdater(Thread if bool(int(os.getenv('BAUH_DEBUG', 0))) else Process):
+
+    URL_APPS = 'https://github.com/vinifmor/bauh-files/blob/master/appimage/apps.db?raw=true'
+    URL_RELEASES = 'https://github.com/vinifmor/bauh-files/blob/master/appimage/releases.db?raw=true'
+    APPS_PATH = '{}/.local/share/bauh/appimage/apps.db'
+    RELEASES_PATH = '{}/.local/share/bauh/appimage/releases.db'
+
+    def __init__(self, http_client: HttpClient, logger: logging.Logger):
+        super(DatabaseUpdater, self).__init__(daemon=True)
+        self.http_client = http_client
+        self.logger = logger
+        self.enabled = bool(int(os.getenv('BAUH_APPIMAGE_DB_UPDATER', 1)))
+        self.sleep = 60 * 20
+
+    def _download_file(self, url: str, output: str):
+        res = self.http_client.get(url, headers={'Authorization': 'token {}'.format(os.getenv('GITHUB_TOKEN'))})
+
+        if res:
+            with open(output, 'wb+') as f:
+                f.write(res.content)
+
+            self.logger.info("Database file saved at {}".format(output))
+        else:
+            self.logger.warning('Could not download a database file from {}'.format(url))
+
+    def run(self):
+        if self.enabled:
+            while True:
+                self.logger.info('Retrieving AppImage databases')
+
+                threads = [Thread(target=self._download_file, args=(self.URL_APPS, self.APPS_PATH)),
+                           Thread(target=self._download_file, args=(self.URL_RELEASES, self.RELEASES_PATH))]
+
+                for t in threads:
+                    t.start()
+
+                for t in threads:
+                    t.join()
+
+                self.logger.info('Sleeping')
+                time.sleep(self.sleep)
+        else:
+            self.logger.warning('Disabled')