#!/bin/sh
set -x
if ! lsmod | grep v4l2loopback > /dev/null; then
    echo "Adding v42loopback module to kernel"
    sudo modprobe v4l2loopback
fi

geometry(){
    windowGeometries=$(
        # `height - 1` is there because of: https://github.com/ammen99/wf-recorder/pull/56 (I could remove it if it's merged, maybe)
        swaymsg -t get_workspaces -r | jq -r '.[] | select(.focused) | .rect | "\(.x),\(.y) \(.width)x\(.height - 1)"'; \
        swaymsg -t get_outputs -r | jq -r '.[] | select(.active) | .rect | "\(.x),\(.y) \(.width)x\(.height)"'
    )
    geometry=$(slurp -b "#45858820" -c "#45858880" -w 3 -d <<< "$windowGeometries") || exit $?
    echo $geometry
}

{
if pidof wf-recorder > /dev/null && pidof ffplay > /dev/null
then
    if pidof ffplay > /dev/null; then
        pkill ffplay > /dev/null
    fi
    if pidof wf-recorder > /dev/null; then
        pkill wf-recorder > /dev/null
    fi
    notify-send -t 2000 "Wayland recording has been stopped"
else
    if ! pidof wf-recorder > /dev/null; then
        geometry=$(geometry) || exit $?
        wf-recorder --muxer=v4l2 --codec=rawvideo --file=/dev/video2 --geometry="$geometry" &
    fi
    if ! pidof ffplay; then
        swaymsg assign [class=ffplay] workspace 11

        unset SDL_VIDEODRIVER
        ffplay /dev/video2 -fflags nobuffer &
        sleep 0.5
        # a hack so FPS is not dropping
        swaymsg [class=ffplay] floating enable
        # swaymsg [class=ffplay] move position 1900 1000
        # swaymsg focus tiling
    fi
    notify-send -t 2000 "Wayland recording has been started"
fi
} > ~/.wayland-share-screen.log 2>&1