#!/usr/bin/env ash

# author:       Daniel Sommer <daniel.sommer@velvettear.de>
# license:      MIT

# exit on ctrl-c
trap 'printf ""$font_colored_bold"\n>> system update aborted!"$font_default"\n" && exit 1' SIGINT 

# font styles & colors
font_default="\e[0m"
font_colored="\e[32;1m"
font_colored_bold="\e[31;1m"

[[ "$(id -u)" != "0" ]] && printf ""$font_colored_bold">> error: permission denied!"$font_default"\n" && exit 1

for arg in "$@"; do
	case "$arg" in
		-n|--noconfirm)
			noconfirm="true"
			;;
		-r|--reboot)
			reboot="true"
			;;	
	esac
done

printf ""$font_colored_bold">> system update started..."$font_default"\n"

printf ""$font_colored"> updating packages..."$font_default"\n"
[[ "$noconfirm" ]] && apk --update-cache upgrade --progress || apk --update-cache upgrade --progress --interactive

orphans="$(apk list --orphaned | awk '{print $1}' 2> /dev/null)"
if [[ "$orphans" ]]; then
	orphans="$(printf "$orphans" | tr '\n' ' ')"
	printf ""$font_colored"> removing orphaned packages..."$font_default"\n"
    	[[ "$noconfirm" ]] && apk del --purge --progress $orphans || apk del --purge --progress --interactive $orphans
fi

[[ -f "/etc/motd" ]] && printf ""$font_colored"> removing '/etc/motd'..."$font_default"\n" && rm -f "/etc/motd"

script="$(dirname $(realpath $0))/conf.d/$(hostname).sh"
[[ -x "$script" ]] && printf ""$font_colored"> executing script "$script"..."$font_default"\n" && (. "$script")

printf ""$font_colored"> cleaning cache..."$font_default"\n"
apk cache clean &> /dev/null
rm -rf "/var/cache/apk/*"

printf ""$font_colored_bold">> system updated finished!"$font_default"\n"

[[ ! "$reboot" ]] && exit 0

timeout="5"
printf ""$font_colored"> rebooting system in "
while [[ "$timeout" -gt "0" ]]; do
        printf "$timeout... "
        timeout="$(( timeout - 1 ))"
        sleep 1 
done
printf "now!"$font_default"\n"
reboot