#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
[ -f "$ROOT_DIR/config/system-stack.env" ] && set -a && . "$ROOT_DIR/config/system-stack.env" && set +a
[ -f "$ROOT_DIR/config/hardware.env" ] && set -a && . "$ROOT_DIR/config/hardware.env" && set +a

: "${SRS_SRT_URL:=srt://127.0.0.1:10080?streamid=#!::r=live/livestream,m=request&latency=10}"

try_mpv_drm() {
  command -v mpv >/dev/null 2>&1 || return 1
  [[ -e /dev/dri/card0 ]] || return 1
  exec mpv \
    --no-config \
    --profile=low-latency \
    --fullscreen \
    --osc=no \
    --osd-level=0 \
    --no-audio \
    --untimed \
    --cache=no \
    --vo=gpu \
    --gpu-context=drm \
    --hwdec=auto-safe \
    "$SRS_SRT_URL"
}

try_ffplay_gui() {
  command -v ffplay >/dev/null 2>&1 || return 1
  export DISPLAY="${DISPLAY:-:0}"
  if [[ -n "${FFPLAY_SDL_DRIVER:-}" ]]; then
    export SDL_VIDEODRIVER="${FFPLAY_SDL_DRIVER}"
  fi
  exec ffplay -fs -nostats -hide_banner \
    -fflags nobuffer -flags low_delay -framedrop \
    -probesize 32 -analyzeduration 0 -sync ext -infbuf \
    -vf "setpts=PTS-STARTPTS" \
    "$SRS_SRT_URL"
}

case "${LIVE_HDMI_PLAYER:-auto}" in
  mpv-drm)
    try_mpv_drm
    ;;
  ffplay-x11)
    try_ffplay_gui
    ;;
esac

try_mpv_drm || try_ffplay_gui

echo "No compatible HDMI playback stack found. Install mpv for DRM/KMS or ffplay + X11." >&2
exit 1