#!/bin/bash
# Usage: ./alert.sh "MESSAGE" [-i image_file] [-f html_file]
set -euo pipefail

PORT="${DASHBOARD_PORT:-3000}"

MESSAGE=""
HTML_FILE=""
IMAGE_FILE=""

while [[ $# -gt 0 ]]; do
  case "$1" in
    -i|--image) IMAGE_FILE="$2"; shift 2 ;;
    -f|--html)  HTML_FILE="$2";  shift 2 ;;
    -h|--help)  echo "Usage: $0 [\"MESSAGE\"] [-i image_file] [-f html_file]" >&2; exit 0 ;;
    -*) echo "Option inconnue : $1" >&2; exit 1 ;;
    *)  MESSAGE="$1"; shift ;;
  esac
done

if [ -z "$MESSAGE" ] && [ -z "$HTML_FILE" ] && [ -z "$IMAGE_FILE" ]; then
  echo "Usage: $0 [\"MESSAGE\"] [-i image_file] [-f html_file]" >&2
  exit 1
fi

# Build jq args
JQARGS=(--arg msg "$MESSAGE")

HTML=""
if [ -n "$HTML_FILE" ] && [ -f "$HTML_FILE" ]; then
  HTML=$(cat "$HTML_FILE")
fi
JQARGS+=(--arg html "$HTML")

IMAGE=""
if [ -n "$IMAGE_FILE" ] && [ -f "$IMAGE_FILE" ]; then
  case "${IMAGE_FILE##*.}" in
    jpg|jpeg) MIME="image/jpeg" ;;
    png)      MIME="image/png"  ;;
    gif)      MIME="image/gif"  ;;
    webp)     MIME="image/webp" ;;
    *)        MIME="image/png"  ;;
  esac
  IMAGE="data:${MIME};base64,$(base64 "$IMAGE_FILE" | tr -d '\n')"
fi
JQARGS+=(--arg image "$IMAGE")

PAYLOAD=$(jq -n "${JQARGS[@]}" '{"message":$msg,"html":$html,"image":$image}')

curl -sf -X POST "http://localhost:${PORT}/api/alert" \
  -H "Content-Type: application/json" \
  -d "$PAYLOAD" \
  && echo "✓ Alerte déclenchée : $MESSAGE" \
  || echo "✗ Serveur non disponible sur le port ${PORT}"