workable mailsync readded to enable autosync

the new script manually searches for environmental variables
so that it can work from a cronjob
and additionally searches for all Xorg displays on Linux
so that the display notification should appear correctly
no doubt there will be more bugs, but this is what the people want
and it's worth working out

1 files changed, 98 insertions, 0 deletions

diff --git a/bin/mailsync b/bin/mailsync
new file mode 100755
index 0000000..02e4f98
--- /dev/null
+++ b/bin/mailsync
@@ -0,0 +1,98 @@
+#!/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 user logged in (prevent cron errors)
+pgrep -u "${USER:=$LOGNAME}" >/dev/null || { echo "$USER not logged in; sync will not run."; exit ;}
+# Run only if not already running in other instance
+pgrep -x 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 -- \
+	"^\(export \)\?\(MBSYNCRC\|PASSWORD_STORE_DIR\|NOTMUCH_CONFIG\|GNUPGHOME\)=" \
+	"$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile" "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.pam_environment" 2>/dev/null`
+# One alternative to this kind of command would be marking the script for
+# /bin/sh -l. That might cause other problems on other particular setups that
+# do more complicated things on login, or those people who assign environmental
+# variables in shell rc files.
+
+# This variable might be required for soysdemd users, but it will break the
+# script on Artix runit.
+# export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus
+export GPG_TTY=$TTY
+
+[ -n "$MBSYNCRC" ] && alias mbsync="mbsync -c $MBSYNCRC" || MBSYNCRC="$HOME/.mbsyncrc"
+
+# 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 ;}
+		messageinfo() { osascript -e "display notification with title \"📧 $from\" subtitle \"$subject\"" ;}
+		;;
+	*)
+		displays="$(ps axo user,cmd | grep "^$USER\s\+.*Xorg" | grep -wo "[0-9]*:[0-9]\+")"
+	    	notify() { for x in $displays; do
+				export DISPLAY=$x
+				notify-send --app-name="mutt-wizard" "mutt-wizard" "📬 $2 new mail(s) in \`$1\` account."
+			done ;}
+		messageinfo() { for x in $displays; do
+				export DISPLAY=$x
+				notify-send --app-name="mutt-wizard" "📧$from:" "$subject"
+			done ;}
+		;;
+esac
+
+# Check account for new mail. Notify if there is new content.
+syncandnotify() {
+    acc="$(echo "$account" | sed "s/.*\///")"
+    if [ -z "$opts" ]; then mbsync "$acc"; else mbsync "$opts" "$acc"; fi
+    new=$(find "$HOME/.local/share/mail/$acc/INBOX/new/" "$HOME/.local/share/mail/$acc/Inbox/new/" "$HOME/.local/share/mail/$acc/inbox/new/" -type f -newer "$HOME/.config/mutt/.mailsynclastrun" 2> /dev/null)
+    newcount=$(echo "$new" | sed '/^\s*$/d' | wc -l)
+    if [ "$newcount" -gt "0" ]; then
+	notify "$acc" "$newcount" &
+        for file in $new; do
+            # Extract subject and sender from mail.
+            from=$(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')
+	    messageinfo &
+        done
+    fi
+}
+
+# Sync accounts passed as argument or all.
+if [ "$#" -eq "0" ]; then
+    accounts="$(awk '/^Channel/ {print $2}' "$MBSYNCRC")"
+else
+    for arg in "$@"; do
+        [ "${arg%${arg#?}}" = '-' ] && opts="${opts:+${opts} }${arg}" && shift 1
+    done
+    accounts=$*
+fi
+
+#( kill -46 "$(pidof "${STATUSBAR:-dwmblocks}")" >/dev/null 2>&1 ) 2>/dev/null
+
+# Parallelize multiple accounts
+for account in $accounts
+do
+    syncandnotify &
+done
+
+wait
+#( kill -46 "$(pidof "${STATUSBAR:-dwmblocks}")" >/dev/null 2>&1 ) 2>/dev/null
+
+notmuch new 2>/dev/null
+
+#Create a touch file that indicates the time of the last run of mailsync
+touch "$HOME/.config/mutt/.mailsynclastrun"