#!/usr/bin/env bash
# start.sh — apply KIOSK_DISPLAY_MODE (best-effort) then launch the kiosk app

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
CONF="$SCRIPT_DIR/kiosk.conf"

if [ -f "$CONF" ]; then
  # shellcheck disable=SC1090
  . "$CONF"
fi

MODE="${KIOSK_DISPLAY_MODE:-}"

apply_mode() {
  local mode="$1"
  # Accept WxH or WxH@Hz (e.g. 1280x720 or 1280x720@60.000000)
  if [[ ! "$mode" =~ ^([0-9]+)x([0-9]+) ]]; then
    echo "[start.sh] No valid mode specified: '$mode'"
    return 1
  fi
  local W=${BASH_REMATCH[1]}
  local H=${BASH_REMATCH[2]}
  # Strip @Hz suffix for tools that don't accept it
  local WH="${W}x${H}"
  echo "[start.sh] Applying display mode $mode (best-effort)"

  # Try X11 xrandr
  if command -v xrandr >/dev/null 2>&1; then
    OUT=$(xrandr --query 2>/dev/null | awk '/ connected/{print $1; exit}')
    if [ -n "$OUT" ]; then
      echo "[start.sh] Using xrandr on output $OUT"
      if xrandr --output "$OUT" --mode "$WH" 2>/dev/null; then
        echo "[start.sh] xrandr succeeded"
        return 0
      else
        echo "[start.sh] xrandr failed to set mode"
      fi
    fi
  fi

  # Try sway (Wayland)
  if command -v swaymsg >/dev/null 2>&1; then
    echo "[start.sh] Trying swaymsg"
    if swaymsg "output * mode ${W} ${H}" >/dev/null 2>&1; then
      echo "[start.sh] swaymsg succeeded"
      return 0
    else
      echo "[start.sh] swaymsg failed"
    fi
  fi

  # Try wlr-randr
  if command -v wlr-randr >/dev/null 2>&1; then
    OUT=$(wlr-randr 2>/dev/null | awk 'NR==1{print $1}')
    if [ -n "$OUT" ]; then
      echo "[start.sh] Using wlr-randr on output $OUT"
      if wlr-randr --output "$OUT" --mode "$WH" >/dev/null 2>&1; then
        echo "[start.sh] wlr-randr succeeded"
        return 0
      else
        echo "[start.sh] wlr-randr failed"
      fi
    fi
  fi

  echo "[start.sh] No supported display tool succeeded (this is best-effort)."
  return 1
}

apply_audio() {
  local index="$1"
  if [[ ! "$index" =~ ^[0-9]+$ ]]; then
    return 1
  fi
  if ! command -v pw-cli >/dev/null 2>&1; then
    return 1
  fi
  echo "[start.sh] Applying audio profile index $index (best-effort)"
  local dev_id
  dev_id=$(pw-dump 2>/dev/null | python3 -c "
import sys, json
try:
    for n in json.load(sys.stdin):
        if n.get('type') == 'PipeWire:Interface:Device':
            props = n.get('info', {}).get('props', {})
            if props.get('media.class') == 'Audio/Device':
                print(n['id'])
                break
except Exception:
    pass
" 2>/dev/null)
  if [ -n "$dev_id" ]; then
    if pw-cli s "$dev_id" Profile "{ index: $index }" >/dev/null 2>&1; then
      echo "[start.sh] Audio profile applied (device $dev_id, index $index)"
      return 0
    else
      echo "[start.sh] pw-cli failed to set audio profile"
    fi
  else
    echo "[start.sh] No audio device found via pw-dump"
  fi
  return 1
}

if [ -n "$MODE" ]; then
  apply_mode "$MODE" || echo "[start.sh] apply_mode failed, continuing to start app"
else
  echo "[start.sh] No KIOSK_DISPLAY_MODE set in $CONF"
fi

AUDIO_INDEX="${KIOSK_AUDIO_PROFILE_INDEX:-}"
if [ -n "$AUDIO_INDEX" ]; then
  apply_audio "$AUDIO_INDEX" || echo "[start.sh] apply_audio failed, continuing to start app"
else
  echo "[start.sh] No KIOSK_AUDIO_PROFILE_INDEX set in $CONF"
fi

cd "$SCRIPT_DIR"

echo "[start.sh] Launching kiosk app"
exec python3 app.py