#!/bin/sh
set -e

HWACCEL="${HWACCEL:-none}"

# Auto-detect the best available hardware accelerator by checking device nodes.
# /dev/nvidia0 → NVENC (NVIDIA, requires NVIDIA Container Toolkit + deploy config)
# /dev/dri/renderD128 → VAAPI (Intel/AMD, requires /dev/dri device passthrough)
# falls back to software (mediamtx built-in recorder, no FFmpeg)
detect_hwaccel() {
  if [ -e /dev/nvidia0 ] && [ -e /dev/nvidiactl ]; then
    echo "nvenc"
  elif [ -e /dev/dri/renderD128 ]; then
    echo "vaapi"
  else
    echo "none"
  fi
}

if [ "$HWACCEL" = "auto" ]; then
  HWACCEL=$(detect_hwaccel)
  echo "[start] auto-detected hardware acceleration: $HWACCEL"
fi

if [ "$HWACCEL" = "none" ]; then
  CONFIG=/app/mediamtx.yml
else
  CONFIG=/app/mediamtx-hwaccel.yml
  echo "[start] hardware acceleration: $HWACCEL"
fi

# Export so on-ready-hw.sh inherits the resolved value
export HWACCEL

# Start mediamtx in the background; Express handles auth and serves HLS.
mediamtx "$CONFIG" &

# Exec Node.js as the foreground process so Docker tracks it for health/stop.
exec node --max-old-space-size=384 dist/index.js