#!/bin/bash
set -e

echo "WARNING: please announce a maintenance! (waiting 3s)"
sleep 3

if [ -z "$1" ]
then
    echo "ERROR: Can't continue. Version querying not implemented as we might not use the latest major release."
    echo "Usage: bash ./update.sh 9.9.9"
    exit 1
fi

echo "This script will stop the Znuny daemon, but Cron can start it again."
read -p "Is the Cronjob for [ otrs.Daemon.pl ] commented? (yY)" -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    echo "Please make sure Cron does not start our daemon."
    [[ "$0" = "$BASH_SOURCE" ]] && exit 1 || return 1  # https://stackoverflow.com/questions/1885525/how-do-i-prompt-a-user-for-confirmation-in-bash-script
fi

cd $HOME/znuny

echo "not stopping Cron.sh, it might (FIXME) not apply"
#bin/Cron.sh stop

$HOME/znuny/bin/otrs.Daemon.pl stop

mkdir -p $HOME/tmp
cd $HOME/tmp

wget https://download.znuny.org/releases/znuny-$1.tar.gz
tar -xf znuny-$1.tar.gz

rm -v *tar.gz
mv -v znuny-$1 $HOME/

echo "NOT running otrs.SetPermissions.pl because we are not usually elevated (not checking)"

cd $HOME
cp -av $HOME/znuny/Kernel/Config.pm $HOME/znuny-$1/Kernel/

if [ -n "$(ls -A $HOME/znuny/var/article 2>/dev/null)" ]; then
    cp -rpv $HOME/znuny/var/article/* $HOME/znuny-$1/var/article/
else
    echo "nothing found in var/article"
fi

for f in $(find -L $HOME/znuny -maxdepth 1 -type f -name .\* -not -name \*.dist); do cp -av "$f" $HOME/znuny-$1/; done
for f in $(find -L $HOME/znuny/var/cron -maxdepth 1 -type f -name .\* -not -name \*.dist); do cp -av "$f" $HOME/znuny-$1/var/cron/; done

rm -v $HOME/znuny
ln -sv $HOME/znuny-$1 $HOME/znuny

$HOME/znuny/bin/otrs.Console.pl Maint::Database::Check
$HOME/znuny/bin/otrs.CheckModules.pl --all

migrationscript=`ls $HOME/znuny-$1/scripts/MigrateToZnuny* | xargs -n 1 basename`

read -p "Our migrationscript appears to be: [ $migrationscript ]. Is this correct? (yY)" -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    echo "Skipping [ Admin::Package::UpgradeAll ] and [ $migrationscript ]..."
    [[ "$0" = "$BASH_SOURCE" ]] && exit 1 || return 1  # https://stackoverflow.com/questions/1885525/how-do-i-prompt-a-user-for-confirmation-in-bash-script
fi

$HOME/znuny/scripts/MigrateToZnuny6_5.pl
$HOME/znuny/bin/otrs.Console.pl Admin::Package::UpgradeAll

echo Script ended without errors!
echo "https://doc.znuny.org/znuny_lts/releases/installupdate/"
echo "https://wiki.hostsharing.net/index.php?title=Znuny_installieren#Updates"