#!/usr/bin/env bash
# =============================================================================
# VideoPress — startup script
# Usage: ./start.sh [--prod] [PORT]
# =============================================================================
set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
MODE="dev"
PORT=""

for arg in "$@"; do
  case "$arg" in
    --prod)   MODE="prod" ;;
    --help|-h)
      echo "Usage: $0 [--prod] [PORT]"
      echo "  --prod   Run via Gunicorn+gevent (production)"
      echo "  PORT     Port number (default: 5000 dev / 8080 prod)"
      exit 0 ;;
    [0-9]*)   PORT="$arg" ;;
  esac
done

[[ -z "$PORT" ]] && PORT=$( [[ "$MODE" == "prod" ]] && echo "8080" || echo "5000" )

echo ""
echo "============================================================"
echo "  VideoPress  |  mode: $MODE  |  port: $PORT"
echo "============================================================"
echo ""

check() { command -v "$1" &>/dev/null || { echo "ERROR: $1 not found. $2"; exit 1; }; }
check python3  "Install Python 3.8+"
check ffmpeg   "sudo apt install ffmpeg"
check ffprobe  "Bundled with ffmpeg"
python3 -c "import flask" 2>/dev/null || { echo "ERROR: Flask missing — pip install -r requirements.txt"; exit 1; }

echo "  ✓ Python  $(python3 --version)"
echo "  ✓ Flask   $(python3 -c 'import flask; print(flask.__version__)')"
echo "  ✓ FFmpeg  available"
echo "  MEDIA_ROOT: ${MEDIA_ROOT:-/media (default)}"
echo ""

cd "$SCRIPT_DIR"

if [[ "$MODE" == "prod" ]]; then
  python3 -c "import gunicorn" 2>/dev/null || { echo "ERROR: gunicorn missing — pip install -r requirements.txt"; exit 1; }
  python3 -c "import gevent"   2>/dev/null || { echo "ERROR: gevent missing — pip install -r requirements.txt"; exit 1; }
  echo "  Starting Gunicorn on http://0.0.0.0:${PORT}"
  echo "  Press Ctrl+C to stop."
  echo "============================================================"
  echo ""
  PORT="$PORT" exec gunicorn -c gunicorn.conf.py wsgi:application
else
  echo "  WARNING: Dev server only — use --prod or Docker for production."
  echo "  Starting Flask on http://localhost:${PORT}"
  echo "============================================================"
  echo ""
  exec python3 run.py "$PORT"
fi