#!/usr/bin/env bash
#Forked from https://gitlab.com/uoou/dotfiles/-/tree/master/stow/bin/home/drew/.local/bin/lace 
# Modified to work on Debian Distros
  
if [ -z "$XDG_CONFIG_HOME" ];then
	config_place="$HOME/.config/lace"
else
	config_place="$XDG_CONFIG_HOME/lace"
fi
[[ ! -d "$config_place" ]] && mkdir -p $config_place
subsfile="$config_place/subs"

red="[31m"
blue="[34m"
nc="[m"
esc=$(echo -e "\033")
tmpfile=$(mktemp /tmp/lace.XXXXXX)
tmpfile2=$(mktemp /tmp/lace.XXXXXX)
function reldate() {
# stolen from https://unix.stackexchange.com/a/451216
    local SEC_PER_MINUTE=$((60))
    local   SEC_PER_HOUR=$((60*60))
    local    SEC_PER_DAY=$((60*60*24))
    local  SEC_PER_MONTH=$((60*60*24*30))
    local   SEC_PER_YEAR=$((60*60*24*365))

    local last_unix="$(date --date="@$1" +%s)"    # convert date to unix timestamp
	local now_unix="$2"
    local delta_s=$(( now_unix - last_unix ))

    if (( delta_s <  SEC_PER_MINUTE * 2))
    then
        echo ""$((delta_s))" seconds ago"
    elif (( delta_s <  SEC_PER_HOUR * 2))
    then
        echo ""$((delta_s / SEC_PER_MINUTE))" minutes ago"
    elif (( delta_s <  SEC_PER_DAY * 2))
    then
        echo ""$((delta_s / SEC_PER_HOUR))" hours ago"
    elif (( delta_s <  SEC_PER_MONTH * 2))
    then
        echo ""$((delta_s / SEC_PER_DAY))" days ago"
    elif (( delta_s <  SEC_PER_YEAR * 2))
    then
        echo ""$((delta_s / SEC_PER_MONTH))" months ago"
    else
        echo ""$((delta_s / SEC_PER_YEAR))" years ago"
    fi
}
export -f reldate

function dohelp() {
	echo -e "\nUsage:\n"
	echo -e "\t$(basename "$0") - read subscriptions\n"
	echo -e "\t$(basename "$0") nope - read subscriptions without pager\n"
	echo -e "\t$(basename "$0") subs - list subscriptions\n"
	echo -e "\t$(basename "$0") sub nickname url - add subscription, e.g.:"
	echo -e "\t$(basename "$0") sub Drew gemini://friendo.monster/tiny.gmi\n"
	echo -e "\t$(basename "$0") unsub nickname - remove subscription, e.g.:"
	echo -e "\t$(basename "$0") unsub Drew\n"
	echo -e "\t$(basename "$0") update - redownload script to location of current script (might need sudo, depending on location)\n"
	exit
}

function timeline() {
	while read f;do
		local user=$(awk '{print $2}' <<< "$f")
		local url=$(awk '{print $1}' <<< "$f")
		if [[ "$url" != *://* ]];then
			domain="$url"
			url="gemini://$url"
		else
				domain=$(sed 's/gemini:\/\///' <<< "$url")
			fi
			if [[ "$url" != *.*/*.* ]] && [[ $url != */ ]];then
				url="$url/"
			fi
			domain=$(sed 's/\/.*$//' <<< "$domain")
			fav=$(openssl s_client -crlf -quiet -connect "$domain:1965" <<<"gemini://$domain/favicon.txt" 2>/dev/null | sed -e '1d')
			if [ ! -z "$fav" ];then
				user="$fav $user"
			fi
			openssl s_client -crlf -quiet -connect "$domain:1965" <<<"$url" 2>/dev/null | sed -e '1d' | sed -n '/##/,$p' | sed -e "s/^\(## .*\)$/\1\n${esc}$red$user${esc}$nc ($domain)/g" >> $tmpfile
			[[ ! -z $(sed -n '$p' $tmpfile) ]] && echo "" >> $tmpfile
		done <"$subsfile"
		cat $tmpfile | sed -r ':r;/(^|\n)$/!{$!{N;br}};s/\n/\v/g' | sed -rn '/^## .*/p' | sed -e 's/\v/\n/g' | sed -e "s/^## \(.*\)/date -d '\1' +%s/e" | sed -r ':r;/(^|\n)$/!{$!{N;br}};s/\n/\v/g' | sort -r | sed -e 's/\v/\n/g'  > $tmpfile


	# removed segment of code	| sed "s/^\([0-9]\+\)$/{reldate \1 $now_unix;}/e" | sed "s/^\([0-9]* [a-z]* ago\)$/${esc}$blue\1${esc}$nc/g"

	while read line; do
	if [[ "$line" =~ ^[0-9]{10,}$ ]]; then
		reldate "$line" "$(date +%s)" >> $tmpfile2
	else
	   echo "$line" >> $tmpfile2
	fi
	done<$tmpfile

	cat $tmpfile2 | sed "s/^\([0-9]* [a-z]* ago\)$/${esc}$blue\1${esc}$nc/g" >$tmpfile



		if [[ "$1" == "nope" ]];then
			cat $tmpfile && rm -f $tmpfile $tmpfile2
		else
			less -RisW $tmpfile && rm -f $tmpfile $tmpfile2
		fi
	}

	if [[ "$1" == "help" ]] || [[ "$1" == "--help" ]] || [[ "$1" == "-help" ]] || [[ "$1" == "-h" ]];then
		dohelp
	elif [[ "$1" == "sub" ]];then
		[[ "$#" -ne 3 ]] && dohelp
		echo "$3 $2" >> $subsfile && echo "added $2 to subscriptions"
elif [[ "$1" == "unsub" ]];then
	[[ "$#" -ne 2 ]] && dohelp
	if grep " $2$" $subsfile 1>/dev/null;then
		sed -i "/ $2$/d" $subsfile &&
		echo "removed subscription to $2"
	else
		echo "subscription \"$2\" does not exist"
	fi
elif [[ "$1" == "subs" ]];then
	awk '{print $2" ("$1")"}' $subsfile 
elif [[ "$1" == "update" ]];then
	curl https://raw.githubusercontent.com/frrobert2/lace/main/lacehowlong > "${BASH_SOURCE[0]}"
else
	now_unix="$(date +'%s')"
	if [[ "$1" == "nope" ]];then
		timeline nope
	else
		timeline
	fi
fi