#!/bin/bash
# notify-teams.sh - Send Teams notifications for systemd service events
#
# Usage: notify-teams.sh <service-name> <status>
#   status: "success" or "failure"
#
# Configuration:
#   Set TEAMS_WEBHOOK_URL environment variable or create /etc/notify-teams.conf

set -euo pipefail

SERVICE_NAME="${1:-unknown}"
STATUS="${2:-unknown}"
HOSTNAME=$(hostname)
TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S %Z')

# Load webhook URL from config file if not set
if [[ -z "${TEAMS_WEBHOOK_URL:-}" ]] && [[ -f /etc/notify-teams.conf ]]; then
    source /etc/notify-teams.conf
fi

if [[ -z "${TEAMS_WEBHOOK_URL:-}" ]]; then
    echo "Error: TEAMS_WEBHOOK_URL not set" >&2
    exit 1
fi

# Set color and title based on status
if [[ "$STATUS" == "success" ]]; then
    THEME_COLOR="00FF00"
    TITLE="Service Completed Successfully"
    EMOJI="✓"
else
    THEME_COLOR="FF0000"
    TITLE="Service Failed"
    EMOJI="✗"
fi

# Get recent logs for context (last 15 lines)
RECENT_LOGS=$(journalctl -u "$SERVICE_NAME" -n 15 --no-pager 2>/dev/null | tail -15 || echo "No logs available")

# Escape special characters for JSON
escape_json() {
    printf '%s' "$1" | python3 -c 'import json,sys; print(json.dumps(sys.stdin.read()))'
}

ESCAPED_LOGS=$(escape_json "$RECENT_LOGS")

# Build and send the payload
curl -s -H "Content-Type: application/json" -d "{
  \"@type\": \"MessageCard\",
  \"@context\": \"https://schema.org/extensions\",
  \"themeColor\": \"${THEME_COLOR}\",
  \"title\": \"${EMOJI} ${TITLE}\",
  \"summary\": \"${SERVICE_NAME} ${STATUS} on ${HOSTNAME}\",
  \"sections\": [{
    \"facts\": [
      {\"name\": \"Service\", \"value\": \"${SERVICE_NAME}\"},
      {\"name\": \"Status\", \"value\": \"${STATUS}\"},
      {\"name\": \"Host\", \"value\": \"${HOSTNAME}\"},
      {\"name\": \"Time\", \"value\": \"${TIMESTAMP}\"}
    ]
  }, {
    \"title\": \"Recent Logs\",
    \"text\": ${ESCAPED_LOGS}
  }]
}" "$TEAMS_WEBHOOK_URL"

echo "Notification sent for ${SERVICE_NAME} (${STATUS})"