improve update notification

.config/dunst/dunstrc

@@ -42,3 +42,6 @@
     highlight = "#ff768e"
     timeout = 10
 
+[updates]
+    category = updates
+    timeout = 0

.local/bin/cron/checkup

@@ -4,30 +4,32 @@
 
 notify-send " Repository Sync" "Checking for package updates..."
 
-if command -v pacman; then
-	sudo pacman -Syyuw --noconfirm || notify-send "Error downloading updates." "Check your internet connection, if pacman is already running, or run update manually to see errors."
-	pkill -RTMIN+8 "${STATUSBAR:-dwmblocks}"
+askupgrade() {
+    [ "$(notify-send -c updates --action=Yes=Yes --action=No=No " Repository Sync" "Updates available. Update now?")" = 'Yes' ] && $TERMINAL -e upgrades
+}
 
+confirmcheck() {
+    notify-send " Repository Sync" "Sync complete. No new packages for update."
+}
+
+failcheck() {
+    notify-send "Error downloading updates." "Check your internet connection, if $1 is already running, or run update manually to see errors."
+}
+
+if command -v pacman 1>/dev/null 2>&1; then
+	sudo pacman -Syyuw --noconfirm || failcheck pacman
 	if pacman -Qu | grep -v "\[ignored\]"; then
-		answer=$(
-			notify-send --action=Yes=Yes --action=No=No \
-				" Repository Sync" "Updates available. Update now?"
-		)
-		[ $answer -eq 1 ] && $TERMINAL -e upgrades
+        askupgrade
 	else
-		notify-send " Repository Sync" "Sync complete. No new packages for update."
+        confirmcheck
 	fi
-elif command -v apt; then
+elif command -v apt 1>/dev/null 2>&1; then
 	n=$(sudo apt upgrade -dy 2>/dev/null | grep -m1 '^[0-9]\+ upgraded,' | tr -cd '0-9' | cut -c1-2)
 	if [ "$n" = '' ]; then
-		notify-send "Error downloading updates." "Check your internet connection, if pacman is already running, or run update manually to see errors."
+        failcheck apt
 	elif [ "$n" = 00 ]; then
-		notify-send " Repository Sync" "Sync complete. No new packages for update."
+        confirmcheck
 	else
-		notify-send --action=Yes=Yes --action=No=No \
-			" Repository Sync" "Updates available. Update now?"
-		[ "$answer" = 1 ] && $TERMINAL -e upgrades
+        askupgrade
 	fi
-
-	pkill -RTMIN+8 "${STATUSBAR:-dwmblocks}"
 fi

.local/bin/statusbar/sb-packages

@@ -4,7 +4,7 @@ if command -v pacman 1>/dev/null 2>&1; then
 fi
 
 if command -v apt 1>/dev/null 2>&1; then
-    vals=$(apt upgrade -sy | grep -m1 '^[0-9]\+ upgraded,' | tr -cd '0-9 ' | tr ' ' '\n' | grep '[0-9]\+' | xargs echo)
+    vals=$(apt upgrade -sy 2>/dev/null | grep -m1 '^[0-9]\+ upgraded,' | tr -cd '0-9 ' | tr ' ' '\n' | grep '[0-9]\+' | xargs echo)
 
     for i in $vals; do
         [ $i != 0 ] && icon="\033[11m\033[10m"

.local/bin/upgrades

@@ -11,6 +11,13 @@ fi
 
 command -v apt 1>/dev/null 2>&1 && sudo apt upgrade
 
-pkill -RTMIN+8 "${STATUSBAR:-dwmblocks}"
+# This pkill is already handled by apt/pacman hooks:
+# pkill -RTMIN+8 "${STATUSBAR:-dwmblocks}"
+#
+# create the file /etc/apt/apt.conf.d/80statusbar containing the following
+# DPkg::Post-Invoke {"/usr/bin/pkill -RTMIN+8 dwmblocks";};
+# TODO: provide example for pacman hook
+
 printf "\\nUpgrade complete.\\nPress <Enter> to exit window.\\n\\n"
 read -r _
+exit