#!/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=$EVENT_TYPE"
echo "SERVICE_ID=$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