Move package to src/ to properly separate what goes into docker image

src/restic_compose_backup/alerts/__init__.py

@@ -0,0 +1,44 @@
+import logging
+
+from restic_compose_backup.alerts.smtp import SMTPAlert
+from restic_compose_backup.alerts.discord import DiscordWebhookAlert
+from restic_compose_backup.config import Config
+
+logger = logging.getLogger(__name__)
+
+ALERT_INFO = 'INFO',
+ALERT_ERROR = 'ERROR'
+ALERT_TYPES = [ALERT_INFO, ALERT_ERROR]
+BACKENDS = [SMTPAlert, DiscordWebhookAlert]
+
+
+def send(subject: str = None, body: str = None, alert_type: str = 'INFO'):
+    """Send alert to all configured backends"""
+    alert_classes = configured_alert_types()
+    for instance in alert_classes:
+        logger.info('Configured: %s', instance.name)
+        try:
+            instance.send(
+                subject=f'[{alert_type}] {subject}',
+                body=body,
+            )
+        except Exception as ex:
+            logger.error("Exception raised when sending alert [%s]: %s", instance.name, ex)
+            logger.exception(ex)
+
+    if len(alert_classes) == 0:
+        logger.info("No alerts configured")
+
+
+def configured_alert_types():
+    """Returns a list of configured alert class instances"""
+    logger.debug('Getting alert backends')
+    entires = []
+
+    for cls in BACKENDS:
+        instance = cls.create_from_env()
+        logger.debug("Alert backend '%s' configured: %s", cls.name, instance != None)
+        if instance:
+            entires.append(instance)
+
+    return entires