From 72cd4d13c07e8ba2c3f423027c8b9f20e960cb47 Mon Sep 17 00:00:00 2001
From: Ze'ev Schurmann <thisiszeev@gmail.com>
Date: Thu, 1 Feb 2024 03:13:41 +0200
Subject: [PATCH] Added checkupdates.sh

---
 checkupdates.sh | 81 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 checkupdates.sh

diff --git a/checkupdates.sh b/checkupdates.sh
new file mode 100644
index 0000000..459a76a
--- /dev/null
+++ b/checkupdates.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+
+tgapi=""
+tgch=""
+
+nextcloudpath="/var/www/html"
+wwwuser="www-data"
+logmax="250"
+logprefix="checkupdates"
+
+function sendtelegram {
+  mode=$1
+  if [[ $mode == "new" ]]; then
+    echo "Nextcloud install needs updating..." > /tmp/nccheckupdatesheader.txt
+  elif [[ $mode == "reminder" ]]; then
+    echo "Reminder: Nextcloud install needs updating..." > /tmp/nccheckupdatesheader.txt
+  else
+    echo "Error with statement 'sendtelegram'."
+    updatelog error
+    exit 1
+  fi
+  echo "Server: $(hostname)" >> /tmp/nccheckupdatesheader.txt
+  echo "Path: $nextcloudpath" >> /tmp/nccheckupdatesheader.txt
+  echo "Date: $(date)" >> /tmp/nccheckupdatesheader.txt
+  echo "" >> /tmp/nccheckupdatesheader.txt
+  string=$(cat /tmp/nccheckupdatesheader.txt /tmp/nccheckupdates.txt)
+  wget -qO- "https://api.telegram.org/bot$tgapi/sendMessage?chat_id=$tgch&text=$string" &> /dev/null
+  errorcode=$?
+  echo $datestamp > /tmp/nccheckupdatessent.txt
+  updatelog $mode $errorcode
+}
+
+function updatelog {
+  if [[ $1 == "new" ]]; then
+    logdata="First Telegram Sent"
+  elif [[ $1 == "reminder" ]]; then
+    logdata="Reminder Telegram Sent"
+  else
+    logdata="Error with statement 'sendtelegram'"
+  fi
+  if [[ ! -z $2 ]]; then
+    if [[ $2 == "0" ]]; then
+      logerror="Successful!"
+    else
+      logerror="Sending Failed: Exit Code $2"
+    fi
+  fi
+  echo "$(date +%y%m%d).$(date +%H%M) - $logprefix - $logdata - $logerror" >> /var/log/nextcloud-telegram-notify.log
+  logsize=$(cat /var/log/nextcloud-telegram-notify.log | wc -l)
+  if [[ $logsize -gt $logmax ]]; then
+    mv /var/log/nextcloud-telegram-notify.log /tmp/nextcloud-telegram-notify.log
+    tail -n $logmax /tmp/nextcloud-telegram-notify.log > /var/log/nextcloud-telegram-notify.log
+    rm /tmp/nextcloud-telegram-notify.log
+  fi
+}
+
+datestamp="$(date +%y%m%d)"
+
+sudo -u $wwwuser php "$nextcloudpath/occ" update:check > /tmp/nccheckupdates.txt
+
+string=$(cat /tmp/nccheckupdates.txt)
+
+if [[ ${string:0:21} == "Everything up to date" ]]; then
+  echo "All Good!"
+  if [[ -f /tmp/nccheckupdatessent.txt ]]; then
+    rm /tmp/nccheckupdatessent.txt
+  fi
+else
+  if [[ ! -f /tmp/nccheckupdatessent.txt ]]; then
+    echo "Update Required: Sending First Telegram..."
+    sendtelegram new
+  elif [[ -f /tmp/nccheckupdatessent.txt ]]; then
+    laststamp=$(head -1 /tmp/nccheckupdatessent.txt)
+    if [[ ${laststamp:0:6} == $datestamp ]]; then
+      echo "Update Required: All ready sent Telegram today."
+    else
+      echo "Update Required: Sending Reminder Telegram..."
+      sendtelegram reminder
+    fi
+  fi
+fi