Initialisierung: Übertragung aus altem Repository

nateman/config_manager.py

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+# NateMan – Nachschreibtermin-Manager
+# config_manager.py
+# Copyright © 2020  Niklas Elsbrock
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""
+Enthält Funktionen zum Laden/Erstellen der Konfigurationsdatei.
+"""
+
+import os
+from shutil import copyfile
+
+import yaml
+
+config: dict = {}
+
+
+def read_config_file(app):
+    """Liest die Konfigurationsdatei."""
+    with open(os.path.join(app.instance_path, "config.yml"), "r", encoding="utf-8") as yaml_file:
+        yamlobj = yaml.safe_load(yaml_file)
+        if not isinstance(yamlobj, dict):
+            raise RuntimeError(f"Invalid config file: yaml.load returned an object "
+                               f"of type {type(yamlobj).__name__} instead of a dict")
+
+    config.clear()
+    config.update(yamlobj)
+
+
+def create_config_file(app) -> str:
+    """Initialisiert die Konfigurationsdatei und gibt den Pfad der neuen Datei zurück."""
+    new_file_path = os.path.join(app.instance_path, "config.yml")
+    copyfile(
+        os.path.join(app.root_path, "resources", "default-config.yml"),
+        new_file_path
+    )
+    return new_file_path
+
+
+def config_file_exists(app) -> bool:
+    """Überprüft, ob die Konfigurationsdatei existiert."""
+    return os.path.isfile(
+        os.path.join(app.instance_path, "config.yml")
+    )