#!/bin/sh

get_pa_sock_path()
{
	PA_SOCK_PATH=$(sockstat -uw | awk -v me="$(whoami)" -F'[ \t]+' '
		$1 == me && $2 == "pulseaudio" && $6 ~ /native/ {
			print $6
			exit 0
		}'
	)
}

#
# Hardware GL needs a DRM render node the user can open and the
# Linux-side Mesa DRI drivers (graphics/linux-rl9-dri) so the Linux
# GL stack can drive it
#
brave_gpu_detect()
{
	local emul node found=

	for node in /dev/dri/renderD*; do
		[ -w "$node" ] || continue
		found=1
		break
	done
	[ "$found" ] || return 1
	emul=$( sysctl -n compat.linux.emul_path 2> /dev/null ) ||
		return 1
	set -- "$emul"/usr/lib64/dri/*_dri.so
	[ -e "$1" ]
}

#
# ANGLE-on-Vulkan needs the Linux-side Vulkan loader
# (x11-toolkits/linux-rl9-vulkan) and a hardware driver ICD (anv,
# radv, ...); lavapipe is software rendering and does not count
#
brave_vulkan_detect()
{
	local emul icd found=

	emul=$( sysctl -n compat.linux.emul_path 2> /dev/null ) ||
		return 1
	[ -e "$emul"/usr/lib64/libvulkan.so.1 ] || return 1
	for icd in "$emul"/usr/share/vulkan/icd.d/*.json; do
		[ -e "$icd" ] || continue
		case "${icd##*/}" in
		lvp_icd*) continue ;;
		esac
		found=1
		break
	done
	[ "$found" ]
}

# Re-exec under a session bus when none is present (many WMs have
# none).  dbus-run-session exports DBUS_SESSION_BUS_ADDRESS to the
# child, so the re-exec cannot loop, and tears the bus down when the
# browser exits, where a dbus-launch daemon would outlive it and
# stack up across launches.
if [ ! "${DBUS_SESSION_BUS_ADDRESS-}" ] &&
   command -v dbus-run-session > /dev/null 2>&1
then
	exec dbus-run-session -- "$0" "$@"
fi

get_pa_sock_path
[ -S "$PA_SOCK_PATH" ] && export PULSE_SERVER=unix:$PA_SOCK_PATH &&
    export PULSE_COOKIE="$HOME/.config/pulse/cookie"

export BRAVE_PATH="%%DATADIR%%/brave"
export BRAVE_WRAPPER="$(readlink -f "$0")"
export LIBGL_DRI3_DISABLE=1

# Never inherit a FreeBSD-side LD_PRELOAD into the Linuxulator binary.
unset LD_PRELOAD

# When built with WIDEVINE we have a helper that seeds brave.widevine_opted_in
# and the Widevine component hint once so DRM works from the very first launch.
if [ -x "%%PREFIX%%/bin/brave-widevine-seed" ]; then
	"%%PREFIX%%/bin/brave-widevine-seed" "$@" || : errors ignored
fi

#
# GPU: use hardware GL when the system can support it, software
# rendering otherwise.  BRAVE_GPU=1 forces hardware GL, BRAVE_GPU=0
# forces software rendering; unset selects by detection.
#
set -- --no-sandbox --no-zygote --v=0 "$@"
gpu=
case "${BRAVE_GPU:-auto}" in
1|yes|YES|true|TRUE)
	gpu=1
	;;
auto)
	brave_gpu_detect && gpu=1
	;;
esac
if [ ! "$gpu" ]; then
	set -- --disable-gpu --disable-gpu-compositing "$@"
	export LIBGL_ALWAYS_SOFTWARE=1
else
	#
	# Prefer ANGLE-on-Vulkan when a hardware Vulkan driver is
	# present: GL command streams from the Linux Mesa drivers have
	# proven prone to GPU hangs on some kernel driver pairings,
	# while the Vulkan path drives the same hardware reliably.
	# BRAVE_VULKAN=1 forces it, BRAVE_VULKAN=0 stays on GL; unset
	# selects by detection.
	#
	case "${BRAVE_VULKAN:-auto}" in
	1|yes|YES|true|TRUE)
		set -- --use-angle=vulkan "$@"
		;;
	auto)
		brave_vulkan_detect &&
			set -- --use-angle=vulkan "$@"
		;;
	esac
fi

# Do not pass --test-type: it ImmediateCrashes under Linuxulator.
exec "$BRAVE_PATH" "$@"