#!/bin/sh

# i3blocks mail module.
# Displays number of unread mail and an loading icon if updating.
# When clicked, brings up `neomutt`.
messageinfo() { notify-send --urgency=$urgency --app-name="📧 Mailbox" "📧 Mailbox:" "Acc: $to
From: <span foreground=\"#b8bb26\"><b>$from</b></span>
Subject: $subject
<span foreground=\"#a89984\">Reseved in $mailfolder</span>" ;}
notify(){
    new=$(find $HOME/.local/share/mail/*/*/new/ -type f 2> /dev/null)
    newcount=$(echo "$new" | sed '/^\s*$/d' | wc -l)
    if [ "$newcount" -gt "0" ]; then
        find $HOME/.local/share/mail/*/*/new/ -type f 2> /dev/null | while read file; do
            # Extract subject and sender from mail.
            to=$(echo "$file" | sed -E "s/\/home\/jasper\/.local\/share\/mail\/(.+)\/.*\/.*\/.*$/\1/")
            mailfolder=$(echo $file | sed -E "s/\/home\/jasper\/.local\/share\/mail\/.*\/(.+)\/.*\/.*$/\1/")
            from=$(awk '/^From: / && ++n ==1,/^\<.*\>:/' "$file" | perl -CS -MEncode -ne 'print decode("MIME-Header", $_)' | awk '{ $1=""; if (NF>=3)$NF=""; print $0 }' | sed 's/^[[:blank:]]*[\"'\''\<]*//;s/[\"'\''\>]*[[:blank:]]*$//')
            subject=$(awk '/^Subject: / && ++n == 1,/^\<.*\>: / && ++i == 2' "$file" | head -n 1 | perl -CS -MEncode -ne 'print decode("MIME-Header", $_)' | sed 's/^Subject: //' | sed 's/^{[[:blank:]]*[\"'\''\<]*//;s/[\"'\''\>]*[[:blank:]]*$//' | tr -d '\n')
            case $mailfolder in
                Spam ) urgency="low" ;;
                Fritz-Box ) urgency="low" ;;
                Schule ) urgency="critical" ;;
                * ) urgency="normal" ;;
            esac
            case $to in
                jspahl11@gmail.com ) urgency="low" ;;
                * ) urgency=$urgency
            esac
	    messageinfo &
        done
    fi
}

case $BLOCK_BUTTON in
	1) setsid -f "$TERMINAL" -e neomutt & ;;
	2) setsid -f mailsync >/dev/null & ;;
	3) notify-send -t 1000 "📬 Mailbox module:" "\- Shows unread mail
- Shows 🔃 if syncing mail
- Left click opens neomutt
- Middle click syncs mail" && notify >/dev/null ;;
	6) "$TERMINAL" -e "$EDITOR" "$0"&;;
esac

unread="$(find ${XDG_DATA_HOME:-$HOME/.local/share}/mail/*/*/new/* -type f | wc -l 2>/dev/null)"

icon="$(cat "/tmp/imapsyncicon_$USER")" 2>/dev/null

[ "$unread" = "0" ] && [ "$icon" = "" ] || echo "📬 $unread$(cat "/tmp/imapsyncicon_$USER" 2>/dev/null)"