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#!/bin/sh
# - Syncs mail for all accounts, or a single account given as an argument.
# - Displays a notification showing the number of new mails.
# - Displays a notification for each new mail with its subject displayed.
# - Runs notmuch to index new mail.
# - This script can be set up as a cron job for automated mail syncing.
# There are many arbitrary and ugly features in this script because it is
# inherently difficult to pass environmental variables to cronjobs and other
# issues. It also should at least be compatible with Linux (and maybe BSD) with
# Xorg and MacOS as well.
# Run only if not already running in other instance
pgrep mbsync >/dev/null && { echo "mbsync is already running."; exit ;}
# First, we have to get the right variables for the mbsync file, the pass
# archive, notmuch and the GPG home. This is done by searching common profile
# files for variable assignments. This is ugly, but there are few options that
# will work on the maximum number of machines.
eval "$(grep -h -- \
"^\s*\(export \)\?\(MBSYNCRC\|MPOPRC\|PASSWORD_STORE_DIR\|NOTMUCH_CONFIG\|GNUPGHOME\|MAILSYNC_MUTE\)=" \
"$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile" "$HOME/.config/zsh/.zprofile" "$HOME/.zshenv" \
"$HOME/.config/zsh/.zshenv" "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.config/zsh/.zshrc" \
"$HOME/.pam_environment" 2>/dev/null)"
export GPG_TTY="$(tty)"
[ -n "$MBSYNCRC" ] && alias mbsync="mbsync -c $MBSYNCRC" || MBSYNCRC="$HOME/.mbsyncrc"
[ -n "$MPOPRC" ] || MPOPRC="$HOME/.config/mpop/config"
lastrun="${XDG_CONFIG_HOME:-$HOME/.config}/mutt/.mailsynclastrun"
# Settings are different for MacOS (Darwin) systems.
case "$(uname)" in
Darwin)
notify() { osascript -e "display notification \"$2 in $1\" with title \"You've got Mail\" subtitle \"Account: $account\"" && sleep 2 ;}
;;
*)
case "$(readlink -f /sbin/init)" in
*systemd*|*openrc*) export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus ;;
esac
# remember if a display server is running since `ps` doesn't always contain a display
pgrepoutput="$(pgrep -ax X\(\|org\|wayland\))"
displays="$(echo "$pgrepoutput" | grep -wo "[0-9]*:[0-9]\+" | sort -u)"
[ -z "$displays" ] && [ -d /tmp/.X11-unix ] && displays=$(cd /tmp/.X11-unix && for x in X*; do echo ":${x#X}"; done)
notify() { [ -n "$pgrepoutput" ] && for x in ${displays:-0:}; do
export DISPLAY="$x"
notify-send --app-name="mutt-wizard" "New mail!" "📬 $2 new mail(s) in \`$1\` account."
done ;}
;;
esac
# Check account for new mail. Notify if there is new content.
syncandnotify() {
case "$1" in
imap) mbsync -q "$2" ;;
pop) mpop -q "$2" ;;
esac
new=$(find\
"$HOME/.local/share/mail/$2/"[Ii][Nn][Bb][Oo][Xx]/new/ \
"$HOME/.local/share/mail/$2/"[Ii][Nn][Bb][Oo][Xx]/cur/ \
-type f -newer "$lastrun" 2> /dev/null)
newcount=$(echo "$new" | sed '/^\s*$/d' | wc -l)
[ -z "$MAILSYNC_MUTE" ] && case 1 in
$((newcount > 0)) ) notify "$2" "$newcount" ;;
esac
}
allaccounts="$(grep -hs "^\(Channel\|account\)" "$MBSYNCRC" "$MPOPRC")"
# Get accounts to sync. All if no argument. Prefix with `error` if non-existent.
IFS='
'
if [ -z "$1" ]; then
tosync="$allaccounts"
else
tosync="$(for arg in "$@"; do for availacc in $allaccounts; do
[ "$arg" = "${availacc##* }" ] && echo "$availacc" && break
done || echo "error $arg"; done)"
fi
for account in $tosync; do
case $account in
Channel*) syncandnotify imap "${account##* }" & ;;
account*) syncandnotify pop "${account##* }" & ;;
error*) echo "ERROR: Account ${account##* } not found." ;;
esac
done
wait
notmuch new --quiet
#Create a touch file that indicates the time of the last run of mailsync
touch "$lastrun"
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