Send alert emails from alert script

alerts/log-alert.sh

@@ -1,8 +1,83 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+CONFIG_FILE="/opt/appfactory/config/appfactory.env"
+
+if [ -f "$CONFIG_FILE" ]; then
+  set -a
+  source "$CONFIG_FILE"
+  set +a
+fi
+
+EVENT_TYPE="${APPFACTORY_ALERT_EVENT_TYPE:-unknown}"
+SERVICE_ID="${APPFACTORY_ALERT_SERVICE_ID:-unknown}"
+INCIDENT_ID="${APPFACTORY_ALERT_INCIDENT_ID:-unknown}"
+PAYLOAD="${APPFACTORY_ALERT_PAYLOAD_JSON:-{}}"
+
 echo "ALERT"
-echo "EVENT_TYPE=${APPFACTORY_ALERT_EVENT_TYPE:-}"
-echo "SERVICE_ID=${APPFACTORY_ALERT_SERVICE_ID:-}"
-echo "INCIDENT_ID=${APPFACTORY_ALERT_INCIDENT_ID:-}"
-echo "PAYLOAD=${APPFACTORY_ALERT_PAYLOAD_JSON:-}"
+echo "EVENT_TYPE=$EVENT_TYPE"
+echo "SERVICE_ID=$SERVICE_ID"
+echo "INCIDENT_ID=$INCIDENT_ID"
+echo "PAYLOAD=$PAYLOAD"
+
+if [ "${ALERT_EMAIL_ENABLED:-0}" != "1" ]; then
+  echo "Email alert disabled."
+  exit 0
+fi
+
+python3 - <<'PY'
+import os
+import smtplib
+from email.message import EmailMessage
+
+event_type = os.getenv("APPFACTORY_ALERT_EVENT_TYPE", "unknown")
+service_id = os.getenv("APPFACTORY_ALERT_SERVICE_ID", "unknown")
+incident_id = os.getenv("APPFACTORY_ALERT_INCIDENT_ID", "unknown")
+payload = os.getenv("APPFACTORY_ALERT_PAYLOAD_JSON", "{}")
+
+smtp_host = os.getenv("SMTP_HOST")
+smtp_port = int(os.getenv("SMTP_PORT", "587"))
+smtp_username = os.getenv("SMTP_USERNAME")
+smtp_password = os.getenv("SMTP_PASSWORD")
+smtp_from = os.getenv("SMTP_FROM") or smtp_username
+alert_to = os.getenv("ALERT_EMAIL_TO")
+
+missing = [
+    name for name, value in {
+        "SMTP_HOST": smtp_host,
+        "SMTP_USERNAME": smtp_username,
+        "SMTP_PASSWORD": smtp_password,
+        "SMTP_FROM": smtp_from,
+        "ALERT_EMAIL_TO": alert_to,
+    }.items()
+    if not value
+]
+
+if missing:
+    raise SystemExit("Missing email config: " + ", ".join(missing))
+
+subject = f"[CSBot Alert] {event_type} - {service_id}"
+
+body = f"""CSBot Services Portal alert
+
+Událost: {event_type}
+Služba: {service_id}
+Incident ID: {incident_id}
+
+Payload:
+{payload}
+"""
+
+msg = EmailMessage()
+msg["From"] = smtp_from
+msg["To"] = alert_to
+msg["Subject"] = subject
+msg.set_content(body)
+
+with smtplib.SMTP(smtp_host, smtp_port, timeout=20) as smtp:
+    smtp.starttls()
+    smtp.login(smtp_username, smtp_password)
+    smtp.send_message(msg)
+
+print(f"Email sent to {alert_to}")
+PY