Add function to read configuration from file or directory

- Introduced `read_config_file` function to handle reading configuration settings.
- Supports both direct file paths and project root directory structure.
- Extracts various database and update type settings into a dictionary.
- Handles timestamp calculations for update types.

settings/config.py

@@ -61,3 +61,58 @@ class Config(object):
     def __del__(self):
 
         pass
+
+
+def read_config_file(path_or_rootdir):
+    """Read configuration and return a dict of options.
+
+    If `path_or_rootdir` is a file path to a config file, it will be used
+    directly. Otherwise it's treated as the project root directory and
+    the config file is expected at `<ROOTDIR>/settings/tvsync_settings.cfg`.
+    """
+    configurer = configparser.ConfigParser()
+    # determine config file path
+    if os.path.isfile(path_or_rootdir):
+        cfg_path = path_or_rootdir
+    else:
+        cfg_path = os.path.join(path_or_rootdir, 'settings', 'tvsync_settings.cfg')
+
+    configurer.read(cfg_path)
+    options = {}
+    # Mirror keys used by the Config class
+    options['loglevel'] = configurer.get('global', 'loglevel')
+    options['hostname'] = configurer.get('dbsettings', 'hostname')
+    options['mghostname'] = configurer.get('dbsettings', 'mghostname')
+    options['dbname'] = configurer.get('dbsettings', 'dbname')
+    options['mgdbname'] = configurer.get('dbsettings', 'mgdbname')
+    options['mysqlusername'] = configurer.get('dbsettings', 'mysqlusername')
+    options['pgsqlusername'] = configurer.get('dbsettings', 'pgsqlusername')
+    options['mssqlusername'] = configurer.get('dbsettings', 'mssqlusername')
+    options['mysqlpassword'] = configurer.get('dbsettings', 'mysqlpassword')
+    options['pgsqlpassword'] = configurer.get('dbsettings', 'pgsqlpassword')
+    options['mssqlpassword'] = configurer.get('dbsettings', 'mssqlpassword')
+    options['pgsqlport'] = configurer.get('dbsettings', 'pgsqlport')
+    options['mysqlport'] = configurer.get('dbsettings', 'mysqlport')
+    options['mssqlport'] = configurer.get('dbsettings', 'mssqlport')
+    options['mgport'] = configurer.get('dbsettings', 'mgport')
+    options['updatetype'] = configurer.get('updatetype', 'type')
+    options['apitype'] = configurer.get('api', 'type')
+    options['updateschema'] = configurer.get('database', 'updateschema')
+    options['dbtype'] = configurer.get('database', 'dbtype')
+    options['initdb'] = configurer.get('database', 'initialize')
+    options['initload'] = configurer.get('database', 'initload')
+    options['skipcache'] = configurer.get('updatetype', 'cacheskip')
+    options['refreshcache'] = configurer.get('updatetype', 'refreshcache')
+    options['full'] = configurer.get('updatetype', 'full')
+    options['monthly'] = configurer.get('updatetype', 'monthly')
+    options['weekly'] = configurer.get('updatetype', 'weekly')
+    options['daily'] = configurer.get('updatetype', 'daily')
+    options['12h'] = configurer.get('updatetype', '12h')
+    options['6h'] = configurer.get('updatetype', '6h')
+    options['custom'] = configurer.get('updatetype', 'custom')
+    options['serieslist'] = list()
+    options['timedifference'] = configurer.get('updatetype', options['updatetype'])
+    options['current_timestamp'] = time.time()
+    if isinstance(options['timedifference'], str) and options['timedifference'].lower() == 'full':
+        options['timedifference'] = int(options['current_timestamp'])
+    return options