✨ Found calcurse notification scripits, yet to use

scripts/calcurse_notification_attempts/calcurse-notifier/LICENSE

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+           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                   Version 2, December 2004
+ 
+Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+Everyone is permitted to copy and distribute verbatim or modified
+copies of this license document, and changing it is allowed as long
+as the name is changed.
+ 
+           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+  TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. You just DO WHAT THE FUCK YOU WANT TO.

scripts/calcurse_notification_attempts/calcurse-notifier/README.md

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+# Calcurse Notifier
+
+Simple bash script that sends notifications X minutes before events saved in calcurse. Will also send notifications X minutes before midnight for daily events. In addition, it has an explicit line for initiating vibration/sound with feedbackd on devices that support that.
+
+Simply add something like the following to your crontab to enable. This line will notify you about events 30 minutes before they happen by running this script every two minutes.
+```
+*/2 * * * * export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus; /path/to/calendar_appointment_notify.sh 30 2
+```
+
+Dependencies:
+
+`libnotify`
+
+`calcurse`
+
+`bc` (shell calculator) and `date`, which should be present on almost every UNIX-like system
+
+optionally `feedbackd`

scripts/calcurse_notification_attempts/calcurse-notifier/calendar_appointment_notify.sh

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+#!/bin/bash
+
+# https://gitlab.com/tzcrawford/calcurse-notifier/
+
+#Will send a notification if the next appointment in the next 24 hours occurs within $1 minutes
+#Set $1 to be the time (minutes) you want the notification to pop up in advance before the appointment actually happens.
+#This script should be executed by cron every minute or something like that thus it cannot run exactly $1 minutes before event.
+#So we use $2 to be the time +/- of $1 that it is okay to send the notification.
+#Probably set $2 this to the same period between when cron runs this script
+
+notify_within=$1
+script_frequency=$2
+
+#if there are no appointments in the next two days, the stop right away
+if [ "$(calcurse -a -d 2)" = "" ] ; then
+    exit 0
+fi
+
+if ! [ "$(calcurse -n)" = "" ] ; then #There is an event today with an associated time
+    hours_remaining=$(calcurse -n | tail -1 | sed 's/ //g' | sed 's/\[//g' | sed 's/\].*//g' | sed 's/:..//g')
+    minutes_remaining=$(calcurse -n | tail -1 | sed 's/ //g' | sed 's/\[//g' | sed 's/\].*//g' | sed 's/..://g')
+
+
+    time_remaining=$( echo "$hours_remaining * 60 + $minutes_remaining" | bc ) #in minutes. just adding the hours to minutes
+
+    #Test whether the next event is within the given time frame
+    #We need bc (calculator) to do the calculation. Will return "1" if the conditional is true
+    #0.95 factor because you can get notifications to pop 3 times if cron is running every 1 minute and you use script_frequency=1
+    notify_boolean=$( echo "$time_remaining <= ($script_frequency*0.95 + $notify_within) && $time_remaining >= ($notify_within - $script_frequency*0.95)" | bc )
+    if [ "$notify_boolean" = 1 ] ; then
+        eventname="$(calcurse -n | sed -n 2p | sed 's/^   \[..:..\] //g')"
+        event_in="$(calcurse -n | sed -n 2p | sed 's/^   \[//g' | sed 's/\].*//g')"
+        notify-send "Appointment: ${eventname} in ${event_in}"
+        # fbcli -t -1 -E message-new-instant 2>&1 >/dev/null || true #send a request to vibrate and make sound with feedbackd if possible
+    fi
+fi
+
+tomorrow="$(date --date 'next day' +"%Y-%m-%d")"
+daily_events="$(calcurse -a -d 2 | tr "\n" "@" | sed "0,/^.*${tomorrow}/ s///" | sed 's/^:@ \* //g' | sed 's/@ \* /, /g' | sed 's/@$//g' )" #Gives list of daily events tomorrow, Hopefully your event doesn't have "@" in it
+if ! [ "$daily_events" = "" ] ; then
+    current_hour="$(date +"%H")"
+    current_minute="$(date +"%H")"
+    minutes_today=$(( $current_hour * 60 + $current_minute )) #Minutes that have elapsed today
+    minutes_left_today=$(( 24*60 - $minutes_today )) #Minutes elapsed at midnight
+    notify_boolean_2="$(echo "$minutes_left_today <= ($script_frequency*0.95 + $notify_within)" | bc )" #It is $notify_within minutes of midnight!
+    if [ "$notify_boolean_2" = 1 ] ; then
+        notify-send "Daily Events: $daily_events"
+        # fbcli -t -1 -E message-new-instant 2>&1 >/dev/null || true #send a request to vibrate and make sound with feedbackd if possible
+    fi
+fi