#!/bin/bash
set -e

echo
echo "WARNING: not well tested, please check the script first"
echo "WARNING: make sure to adjust required configs and plugins WITHIN THE SCRIPT before running initially!"
echo "FIXME: rsync might be more elegant midterm..."
echo "waiting 5s."
echo
sleep 5

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

# we prepare the update here in order to
# properly locate the target directory below
wget -q "https://download.dokuwiki.org/src/dokuwiki/dokuwiki-stable.tgz"
echo "Download completed."
tar xzf dokuwiki-stable.tgz
echo "Extracting completed."
rm -v *tgz*

# ---------------------------------------------------------------------------
releasedir=`ls $HOME/tmp/`
domain=`ls $HOME/doms/`

# define files we need to keep
plugins="backlinks,hostsharing,testing"
configs="acl.auth.php,plugins.local.php,local.php,users.auth.php"
# ---------------------------------------------------------------------------

read -p "Our domain appears to be: [ $domain ]. Is this correct? (yY)" -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    [[ "$0" = "$BASH_SOURCE" ]] && exit 1 || return 1
fi
echo

target="$HOME/doms/$domain/htdocs-ssl"
oldversion=`cat $target/VERSION`
olddir=`readlink $target`

echo "The link target will be [ $target ]."
echo "The old directory was [ $olddir ]"
read -p "Our release dir appears to be: [ $releasedir ] and we are coming from [ $oldversion ]. Is this correct? (yY)" -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    [[ "$0" = "$BASH_SOURCE" ]] && exit 1 || return 1
fi

echo "Moving [ $releasedir ] home..."
mv -v $HOME/tmp/$releasedir $HOME/

cd $HOME
echo "Replacing the link in [ $target ]"

rm -v $target
ln -sv $HOME/$releasedir $target
cp -v $olddir/conf/{$configs} $target/conf/

echo "[ ! ] only known plugins will be copied over."
echo "[ ! ] please compare and configure the script accordingly"

cp -rp $olddir/lib/plugins/{$plugins} $target/lib/plugins/
echo "Copied [ $plugins ] to target."

echo "Copying .htaccess"
cp -vp $olddir/.htaccess $target/

echo
echo "All done!"
echo "Check the changelog: https://www.dokuwiki.org/changes"
echo "Check extensions for updates."