#!/bin/sh

set -ue


readonly EXIT_SUCCESS=0
readonly EXIT_FAILURE=1


cmd_wireless() {
    return 0 # todo 
}

cmd_ethernet() {
    return 0 # todo
    echo "$(LANG=C nmcli -t -f active,ssid dev wifi | grep '^yes' | cut -d: -f2) $(ip -o -4 addr show | awk '{print $4}' | cut -d/ -f1 | head -1)"
}

cmd_battery() {
    return 0 # todo
}

cmd_disk_root() {
    df -h / | awk '/\// {print "/ "$3"/"$2}'
}

cmd_disk_home() {
    res="$(df -h /home)"
    if [ "$(echo "${res}" | awk '/\// {print $6}')" != "/home" ]; then
        return 1
    fi
    df -h /home | awk '/\// {print " "$3"/"$2}'
}

cmd_memory() {
    free -h | awk '/^Mem/ {print " "$3"/"$2}' | sed 's/i//g'
}

cmd_cpu_usage() {
    top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print " "100 - $1"%"}'
}

cmd_cpu_temp() {
    temp_mC="$(cat /sys/class/thermal/thermal_zone0/temp)"
    temp_C="$((temp_mC / 1000))"

    if [ "${temp_C}" -gt 80 ]; then
        echo " ${temp_C}°C"
        exit 33 # bad
    else
        echo " ${temp_C}°C"
    fi
}

cmd_time() {
    LC_ALL=C date '+ %d.%m.%y %a   %H:%M'
}

cmd_volume() {
    amixer get Master | awk -F'[][]' '/%/ {print " "$2}' | head -n 1
}

cmd_pomodoro() {
    pomodoro get
}

cmd_bluetooth_battery() {
    return 0
}

case "${1}" in
    wireless) shift;           cmd_wireless          "$@" ;;
    ethernet) shift;           cmd_ethernet          "$@" ;;
    battery) shift;            cmd_battery           "$@" ;;
    disk_root) shift;          cmd_disk_root         "$@" ;;
    disk_home) shift;          cmd_disk_home         "$@" ;;
    memory) shift;             cmd_memory            "$@" ;;
    cpu_usage) shift;          cmd_cpu_usage         "$@" ;;
    cpu_temp) shift;           cmd_cpu_temp          "$@" ;;
    time) shift;               cmd_time              "$@" ;;
    volume) shift;             cmd_volume            "$@" ;;
    pomodoro) shift;           cmd_pomodoro          "$@" ;;
    bluetooth_battery) shift;  cmd_bluetooth_battery "$@" ;;

    *) exit "${EXIT_FAILURE}" ;;
esac
exit "${EXIT_SUCCESS}"