#!/usr/bin/env bash

# forked from https://gitlab.com/uoou/dotfiles/-/tree/master/stow/bin/home/drew/.local/bin/lace
# https://raw.githubusercontent.com/frrobert2/lace/main/lace
# Shows both how many days ago and date
# Modified to work with Debian running Sed 3.7
# connectto is a timeout variable in seconds 
# it is the time lace will wait to connect to a site before it stops the connection
#  default is 30 seconds you can change it what you want
connectto=30
set -o pipefail
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")
    if [[ "$1" == "strict" ]] || [[ "$1" == "--strict" ]] || [[ "$1" == "-strict" ]] || [[ "$1" == "-s" ]];then
        red="### "
        blue="### "
        nc=""
        esc=""
    fi
tmpfile=$(mktemp /tmp/lace.XXXXXX)
tmpfile2=$(mktemp /tmp/lace.XXXXXX)
tmpfile3=$(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")
        timeout $connectto openssl s_client -crlf -quiet -connect "$domain:1965" <<<"$url" 2>/dev/null > $tmpfile3
            timeoutstatus=${PIPESTATUS[0]}
            if [ $timeoutstatus -ne 124 ];then
            local newuser=$(cat $tmpfile3 | grep -m 1 author: | awk -F ":" '{print $2}'  )
        local newavatar=$(cat $tmpfile3 | grep -m 1 avatar: | awk -F ":" '{print $2}'  )
            if [[ $newuser != "" ]]
            then
    newuser=$(echo "$newuser" | xargs)
    newavatar=$(echo "$newavatar" | xargs)
        user="$newavatar $newuser"
    else
    fav=$(timeout $connectto openssl s_client -crlf -quiet -connect "$domain:1965" <<<"gemini://$domain/favicon.txt"; 2>/dev/null | sed -e '1d')
    if [ ! -z "$fav" ];then
        user="$fav $user"
    fi
        
            fi

            cat $tmpfile3 | sed -e '1d' | sed -n '/##/,$p' | sed -e "s/^\(## .*\)$/\1\n${esc}$red$user${esc}$nc ($domain)/g" >> $tmpfile
            [[ ! -z $(sed -n '$p' $tmpfile) ]] && echo "" >> $tmpfile
            fi
        done <"$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'  > $tmpfile3


cp $tmpfile3 $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
        # the check probably needs to be expanded
        if [[ "$line" =~ ^[0-9]{10,}$ ]]; then
            [ -n "${#BASH_REMATCH[@]}" ] && VALID=1 || VALID=0
            reldate "$line" "$(date +%s)" >> $tmpfile2
            echo "$(date -d @$line)" >> $tmpfile2
        else
            #check if the regex matching was OK
            if (( VALID == 1 )); then
                # write valid entries to the tmpfile
                echo "$line" >> $tmpfile2
            else
                #... send the 'bad' to the stdout
                echo "$line"
            fi
        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 $tmpfile3
        else
            less -RisW $tmpfile && rm -f $tmpfile $tmpfile2 $tmpfile3
        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 [[ "$1" == "update" ]];then
        curl https://raw.githubusercontent.com/frrobert2/lace/main/lace > "${BASH_SOURCE[0]}"
    else
        now_unix="$(date +'%s')"
        if [[ "$1" == "nope" ]];then
            timeline nope
        else
            timeline
        fi
    fi
# vim: ts=4 sw=4 expandtab