#!/bin/bash

if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root" 
   exit 1
fi

echo -e "CAREFUL !\nIf you're installing from backuppc 3, backups and hosts will (normally) be conserved, \nBUT some configuration need to be changed manually by you (Apache2, backup settings,...).\nBackup your /etc/backuppc directory, and Good luck !"
read -n 1 -s -r -p "Press any key to continue"
echo "PURGE DE BACKUPPC ET AJOUT DES DÉPENDENCES"
apt remove backuppc
apt-get install -y par acl  libacl1-dev apache2 apache2-utils libapache2-mod-perl2 glusterfs-client par2 perl smbclient rsync tar gcc zlib1g zlib1g-dev libapache2-mod-scgi rrdtool git make perl-doc libarchive-zip-perl libfile-listing-perl libxml-rss-perl libcgi-session-perl libtime-parsedate-perl

if [ ! -d "/var/lib/backuppc" ]; then
        mkdir /var/lib/backuppc
        echo "CREATION DE L'UTILISATEUR BACKUPPC"
        adduser --system --home /var/lib/backuppc --group --disabled-password --shell /bin/bash backuppc
        mkdir -p /var/lib/backuppc/.ssh
        ssh-keygen -q -t rsa -b 4096 -N '' -C "BackupPC key" -f /var/lib/backuppc/.ssh/id_rsa
        echo -e "BatchMode yes\nStrictHostKeyChecking accept-new" > /var/lib/backuppc/.ssh/config
        chmod 700 /var/lib/backuppc/.ssh && chmod 600 /var/lib/backuppc/.ssh/id_rsa && chmod 644 /var/lib/backuppc/.ssh/id_rsa.pub && chmod 644 /var/lib/backuppc/.ssh/config && chown -R backuppc:backuppc /var/lib/backuppc/.ssh 
fi

pushd `mktemp -d`
mkdir backuppc rsync-bpc backuppc-xs

echo "RECUPERATION DES DÉPOTS BACKUPPC"
curl -s https://api.github.com/repos/backuppc/backuppc/releases/latest | grep "browser_download_url.*.tar.gz" | cut -d : -f 2,3 | tr -d \" | wget -qi - -O backuppc.tar.gz
curl -s https://api.github.com/repos/backuppc/rsync-bpc/releases/latest | grep "browser_download_url.*.tar.gz" | cut -d : -f 2,3 | tr -d \" | wget -qi - -O rsync-bpc.tar.gz
curl -s https://api.github.com/repos/backuppc/backuppc-xs/releases/latest | grep "browser_download_url.*.tar.gz" | cut -d : -f 2,3 | tr -d \" | wget -qi - -O backuppc-xs.tar.gz

echo "COMPILATION DE BACKUPPC-XS"
tar -xzf backuppc-xs.tar.gz -C backuppc-xs/
cd backuppc-xs/*/
perl Makefile.PL
make
make test
make install
cd ../../

echo "COMPILATION DE RSYNC-BPC"
tar -xzf rsync-bpc.tar.gz -C rsync-bpc/
cd rsync-bpc/*/
./configure
make
make install
cd ../../

echo "COMPILATION DE BACKUPPC"
tar -xzf backuppc.tar.gz -C backuppc/
cd backuppc/*/
if [ -f "/etc/backuppc/config.pl" ]; then
	systemctl stop backuppc
        ./configure.pl --batch --config-path /etc/backuppc/config.pl
	popd
	systemctl start backuppc
else
        ./configure.pl --batch --cgi-dir /usr/local/backuppc/cgi-bin --data-dir /var/lib/backuppc --hostname backuppc --html-dir /usr/local/backuppc/cgi-bin --html-dir-url '' --install-dir /usr/local/backuppc --config-dir /etc/backuppc
	echo "CONFIGURATION DE BACKUPPC"
	cp systemd/backuppc.service /etc/systemd/system/ && systemctl daemon-reload
	sed -i "s/{CgiAdminUsers}     = '';/{CgiAdminUsers}     = 'backuppc';/g" /etc/backuppc/config.pl
	systemctl enable --now backuppc

	echo "CONFIGURATION D'APACHE2"
	cat << EOF > /etc/apache2/sites-available/001-backuppc.conf
<VirtualHost *:80>
        DocumentRoot /usr/local/backuppc/cgi-bin

        Alias /hw /var/www/hw/

        <Directory /usr/local/backuppc/cgi-bin/>
                AllowOverride None
                Allow from all

                Options ExecCGI FollowSymlinks
                DirectoryIndex BackupPC_Admin

                <FilesMatch "BackupPC_Admin$">
                        SetHandler cgi-script
                </FilesMatch>
                AuthUserFile /etc/backuppc/htpasswd
                AuthType basic
                AuthName "BackupPC admin"
                require valid-user
        </Directory>

</VirtualHost>

EOF
	sed -i 's/www-data/backuppc/' /etc/apache2/envvars
	a2dissite 000-default
	a2enmod cgid && a2ensite 001-backuppc.conf

	systemctl restart apache2

	if [ ! -f "/etc/backuppc/htpasswd" ]; then
	        touch /etc/backuppc/htpasswd
	        htpasswd -b /etc/backuppc/htpasswd 'backuppc' 'password'
	fi

	popd
fi

echo -e "FINI !\nUse the account backuppc with the password 'password'"