#!/bin/sh

# set -x

output_file=${1:-"${HOME}/Videos/rec_$(now).mkv"}
audio_output=${WF_AOUT:-alsa_output.pci-0000_00_1f.3.analog-stereo}
audio_input=${WF_AIN:-alsa_input.pci-0000_00_1f.3.analog-stereo}
video_output=${WF_VOUT:-DP-5}
showkeys=${WF_KEYS}

mux_sink=${WF_ASINK}
if [ -z "${mux_sink}" ]; then
	mux_sink=wf-mux
	mux_sink_id=
	output_loopback_id=
	input_loopback_id=
	prepare_mux_sink() {
		mux_sink_id=$(pactl load-module module-null-sink sink_name="${mux_sink}")
		output_loopback_id=$(pactl load-module module-loopback sink="${mux_sink}" source="${audio_output}.monitor")
		input_loopback_id=$(pactl load-module module-loopback sink="${mux_sink}" source="${audio_input}")
	}
	teardown_mux_sink() {
		pactl unload-module "${mux_sink_id}"
		pactl unload-module "${output_loopback_id}"
		pactl unload-module "${input_loopback_id}"
	}
	trap '{ teardown_mux_sink >/dev/null; }' EXIT
	prepare_mux_sink >/dev/null
fi

if [ -n "${showkeys}" ]; then
	echo "Starting wshowkeys on ${video_output}"
	echo "WARNING: currently the -o flag to force display to a specific output is not implemented" >&2
	sway exec "wshowkeys -a bottom -a left -F 'Iosevka Sparkle 25' -t 1 -o ${video_output}" >/dev/null
	trap '{ pkill wshowkeys; }' EXIT
fi

wf-recorder -c h264_vaapi -d /dev/dri/renderD128 -o "${video_output}" -a "${mux_sink}.monitor" -f "${output_file}"