From a109b226bf6503584b4dea5a4203141e44338b85 Mon Sep 17 00:00:00 2001
From: nico <nico@magicbroccoli.de>
Date: Mon, 26 Oct 2020 19:23:22 +0100
Subject: Initial working release

XMPP retired MUC Bot

This Bot connects to a chosen MUC to inform connecting users of
the new/ different MUC they should connect to.
---
 config.py | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 config.py

(limited to 'config.py')

diff --git a/config.py b/config.py
new file mode 100644
index 0000000..9287aca
--- /dev/null
+++ b/config.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+import sys
+from pathlib import Path
+
+from ruamel.yaml import YAML
+from ruamel.yaml.parser import ParserError
+from ruamel.yaml.scanner import ScannerError
+
+
+class Config:
+    def __init__(self):
+        # class variables
+        self.content = None
+
+        # select config file
+        self.conf_file = Path("config.yml")
+        if not Path.exists(self.conf_file):
+            self.conf_file = Path("/etc/retiredmuc-bot.yml")
+
+        # read config file
+        self._read()
+
+    def _read(self):
+        """init the config object with this method"""
+        self._check()
+
+        # open file as an iostream
+        with open(self.conf_file, "r", encoding="utf-8") as f:
+            try:
+                self.content = YAML(typ="safe").load(f)
+
+            # catch decoding errors
+            except (ParserError, ScannerError) as err:
+                print(err, file=sys.stderr)
+                exit(1)
+
+    def _check(self):
+        """internal method to check if the config file exists"""
+        try:
+            # if file is present continue
+            if self.conf_file.exists():
+                return
+
+            # if not create a blank file
+            else:
+                self.conf_file.touch(mode=0o640)
+
+        # catch permission exceptions as this tries to write to /etc/
+        except PermissionError as err:
+            print(err, file=sys.stderr)
+            sys.exit(err.errno)
+
+    def get(
+        self, key: str = None, default: (str, int) = None
+    ) -> (dict, str, int, None):
+        """method to retrieve the whole config data, a single value or the optional default value"""
+        # if a special key is request, return only that value
+        if key is not None:
+
+            # safety measure
+            if key in self.content:
+                return self.content[key]
+
+            # if a default value is given return that
+            if default is not None:
+                return default
+
+            # if the key isn't part if self.content return None
+            else:
+                return None
+
+        # else return everything
+        return self.content
-- 
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