#! /bin/sh

export COLOR_FOREGROUND='#FFA3A6AB'
export COLOR_BACKGROUND='#FF000000'
export COLOR_ACTIVE_MONITOR_FG='#FF000000'
export COLOR_ACTIVE_MONITOR_BG='#FF000000'
export COLOR_INACTIVE_MONITOR_FG='#FF58C5F1'
export COLOR_INACTIVE_MONITOR_BG='#FF000000'
export COLOR_FOCUSED_OCCUPIED_FG='#FFF6F9FF'
export COLOR_FOCUSED_OCCUPIED_BG='#FF000000'
export COLOR_FOCUSED_FREE_FG='#FFF6F9FF'
export COLOR_FOCUSED_FREE_BG='#FF000000'
export COLOR_FOCUSED_URGENT_FG='#FF000000'
export COLOR_FOCUSED_URGENT_BG='#FFF9A299'
export COLOR_OCCUPIED_FG='#FFA3A6AB'
export COLOR_OCCUPIED_BG='#FF000000'
export COLOR_FREE_FG='#FF6F7277'
export COLOR_FREE_BG='#FF000000'
export COLOR_URGENT_FG='#FFF9A299'
export COLOR_URGENT_BG='#FF000000'
export COLOR_LAYOUT_FG='#FFA3A6AB'
export COLOR_LAYOUT_BG='#FF000000'
export COLOR_TITLE_FG='#FFA3A6AB'
export COLOR_TITLE_BG='#FF000000'
export COLOR_STATUS_FG='#FFA3A6AB'
export COLOR_STATUS_BG='#FF000000'
export COLOR_STATUS_READ="#859900"
export COLOR_STATUS_WRITE="#990A1B"

if [ $(pgrep -cx panel) -gt 1 ] ; then
	printf "%s\n" "The panel is already running." >&2
	exit 1
fi

trap 'trap - TERM; kill 0' INT TERM QUIT EXIT

[ -e "$PANEL_FIFO" ] && rm "$PANEL_FIFO"
mkfifo "$PANEL_FIFO"

bspc config top_padding $PANEL_HEIGHT
bspc control --subscribe > "$PANEL_FIFO" &
xtitle -sf 'T%s' > "$PANEL_FIFO" &
clock -sf 'S%a %Y-%m-%d %H:%M' > "$PANEL_FIFO" &
mpstat 1 | stdbuf -oL awk '$12 ~ /[0-9.]+/ { printf "L%3d\n", 100 - $12 }' > "$PANEL_FIFO" &
free -m -s 1 | stdbuf -oL awk '/^Mem:.*/ { print "M"$2 - $6 - $7"/"$2 }' > "$PANEL_FIFO" &
iostat -y -d 1 | stdbuf -oL awk '/Device.*/ { printf("\nI"); next } /^[0-9a-z]* / { printf " %s %04.0f↓ %04.0f↑", $1, $3, $4 } END { printf "\n" }' > "$PANEL_FIFO" &

# Battery
while :; do
    acpi -b | sed 's/.*, /B/' > "$PANEL_FIFO"
    sleep 1
done &

# Temperature
while :; do
    cat /sys/devices/virtual/thermal/thermal_zone0/temp | sed 's/[0-9][0-9][0-9]$//' | sed 's/^/C/' > "$PANEL_FIFO"
    sleep 2
done &

# Network throughput
while :; do
    net_info=$(
        ip -4 -o addr show | grep -v ' lo ' |
            while read line; do
                iface=$(echo $line | cut -d ' ' -f 2);
                addr=$(echo $line | cut -d ' ' -f 4 | sed 's/\/.*//');

                rf=/sys/class/net/eth0/statistics/rx_bytes;
                tf=/sys/class/net/eth0/statistics/tx_bytes;

                # Get RX and TX bytes then sleep for ~1 second
                r1=`cat $rf`;
                t1=`cat $tf`;
                sleep 1

                # Get RX and TX bytes and print rates in KBPS
                r2=`cat $rf`;
                t2=`cat $tf`;
                rr="$(((r2-r1)/1024))";
                tr="$(((t2-t1)/1024))";
                printf "$iface $addr %04.0f↓ %04.0f↑ " $rr $tr
            done)
    echo "N$net_info" > "$PANEL_FIFO"
done &

#. ./panel_colors

cat "$PANEL_FIFO" | ~/.config/bspwm/panel_bar | lemonbar -f "Deja Vu Sans Mono-11" -g x$PANEL_HEIGHT -f "$PANEL_FONT" -F "$COLOR_FOREGROUND" -B "$COLOR_BACKGROUND" &

wait