(scripts) added script to check if a service is running, added script to

set a reminder with `at(d)`

scripts/reminder.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+source process-status.sh
+
+set_reminder() {
+    message_reminder=$(
+        cat <<'EOF'
+enter reminder message to display when the timer rings
+EOF
+    )
+    message_time="$(
+        cat <<'EOF'
+enter reminder time in one of the following formats:
+    `18:00`
+    `<time> + 5 minutes` - time can be `now`
+EOF
+    )"
+
+    if ! is_process_running "atd.service"; then
+        notify-send "ERROR" "[atd.service] is not running"
+    fi
+
+    reminder="$(rofi -dmenu -theme ~/.config/rofi/themes/command-runner-blue.rasi -mesg "${message_reminder}")"
+    if [[ -z "${reminder}" ]]; then return 1; fi
+
+    time="$(rofi -dmenu -theme ~/.config/rofi/themes/command-runner-blue.rasi -mesg "${message_time}")"
+    if [[ -z "${time}" ]]; then return 1; fi
+
+    if ! $(echo "notify-send '${reminder}'" | at "${time}"); then
+        notify-send "failed to set reminder"
+        return
+    fi
+
+    notify-send "set reminder at ${time}"
+}
+
+set_reminder