#!/bin/bash

PKG_NAME="gitlab-ce"

CURRENT_VERSION=$(dpkg -s $PKG_NAME | grep Version | sed 's/Version: //')
MINOR_PREFIX=$(dpkg -s $PKG_NAME | grep Version | sed 's/Version: //' | awk -F "." '{print $1 "." $2}')
UPDATE_TO=$(apt-cache madison $PKG_NAME | grep $CURRENT_VERSION -B5 | awk -F "|" '{print $2}' | sed 's/ //' | grep $MINOR_PREFIX | head -n1)

DATE=$(date +'%Y-%m-%d %H:%M:%S')

UPDATE_LOG="/var/log/gitlab-auto-update.log"
ERROR_LOG="/var/log/gitlab-auto-update.error.log"

# Remove leading/trailing whitespace and newlines from the strings
CURRENT_VERSION=$(echo "$CURRENT_VERSION" | tr -d '[:space:]')
UPDATE_TO=$(echo "$UPDATE_TO" | tr -d '[:space:]')

if [[ "$CURRENT_VERSION" == "$UPDATE_TO" ]]; then
	echo "$DATE | $CURRENT_VERSION | no new minor version is available" >> /var/log/gitlab-auto-update.log
else
	echo "$DATE | $CURRENT_VERSION | updating to $UPDATE_TO" >> /var/log/gitlab-auto-update.log
	sudo apt install -y "$PKG_NAME-$UPDATE_TO" 2>"$ERROR_LOG"
	
	# Check if there were any errors
	if [ -s "$ERROR_LOG" ]; then
		echo "$DATE | $CURRENT_VERSION | error occurred while updating the package" >> $UPDATE_LOG
		cat "$ERROR_LOG"
		exit 1
	else
		echo "$DATE | $CURRENT_VERSION | package updated successfully" >> $UPDATE_LOG
	fi
fi