#! /bin/sh

# $Id: install.sh.txt,v 1.23 2009/11/13 07:40:10 mig5 Exp $

########################################################################
# Aegir quick install script
#
# This script takes care of deploying all the required PHP scripts for
# the frontend to run properly. It should be ran as the Aegir user.
#
# It should keep to strict POSIX shell syntax to ensure maximum
# portability. The aim here is to ease the burden on porters but also
# allow people using various platforms to zip through the install quicker.
#
# Eventually, all this should be performed by the Provision backend.
#
# This script also *DOES NOT CHECK* if the requirements have been met.
# It's up to the admin to follow the proper install instructions or use
# the packages provided by their platform.

########################################################################
# basic variables, change before release
AEGIR_DOMAIN=aegir.example.com 
AEGIR_VERSION=6.x-0.4-alpha3
AEGIR_HOME=$HOME
WEB_GROUP=www-data
DRUSH="$AEGIR_HOME/drush/drush.php"
DRUSH_VERSION=All-Versions-2.1
# when adding a variable here, add it to the display below

# no configurable settings below this line
HOSTMASTER_DIR=$AEGIR_HOME/hostmaster-$AEGIR_VERSION

########################################################################
# functions

# noticeable messages
msg() {
  echo "==> $*"
}

# simple prompt
prompt_yes_no() {
  while true ; do
    printf "$* [Y/n] "
    read answer
    if [ -z "$answer" ] ; then
	return 0
    fi
    case $answer in
      [Yy]|[Yy][Ee][Ss])
        return 0
        ;;
      [Nn]|[Nn][Oo])
        return 1
        ;;
      *)
	echo "Please answer yes or no"
	;;
    esac
 done 

}

usage() {
  cat <<EOF
Usage: $0 [ -V version ] [ -h ] [ -w group ] [ -d home ] hostname
EOF
}

########################################################################
# Main script

# stop on error
set -e

# parse commandline
args=`getopt V:w:d:h $*`
set -- $args

for i
do
        case "$i" in
              -w) shift; WEB_GROUP=$1; shift;;
              -h) shift; usage; exit;;
              -V) shift; AEGIR_VERSION=$1; shift;;
              -d) shift; AEGIR_HOME=$1; shift;;
              --) shift; break;;
        esac
done

AEGIR_DOMAIN=${1:-$AEGIR_DOMAIN}


msg "Aegir automated install script"

if [ `whoami` = "root" ] ; then
  msg "This script should be ran as a non-root user"
  exit 1
fi

msg "This script makes the following assumptions: "
cat <<EOF
 * you have read INSTALL.txt and prepared the platform accordingly
 * you are running as your "aegir" user
 * the following settings are correct:
AEGIR_DOMAIN=$AEGIR_DOMAIN
AEGIR_VERSION=$AEGIR_VERSION
AEGIR_HOME=$AEGIR_HOME
WEB_GROUP=$WEB_GROUP
HOSTMASTER_DIR=$HOSTMASTER_DIR
DRUSH=$DRUSH
DRUSH_VERSION=$DRUSH_VERSION

Some of those settings can be changed on the commandline, see:

 $0 -h

for more information.
EOF

prompt_yes_no "Do you want to proceed with the install?"

msg "Creating basic directory structure"
mkdir -p $AEGIR_HOME/config/vhost.d
mkdir -p $AEGIR_HOME/backups
chmod 0711 $AEGIR_HOME/config
chmod 0700 $AEGIR_HOME/backups

if which drush 2> /dev/null ; then
	msg "Drush is in the path, good"
	DRUSH=drush
elif [ -x $DRUSH ] ; then
	msg "Drush found in $DRUSH, good"
	DRUSH="php $AEGIR_HOME/drush/drush.php"
else
	msg "Installing drush in $AEGIR_HOME"
	cd $AEGIR_HOME
	wget http://ftp.drupal.org/files/projects/drush-$DRUSH_VERSION.tar.gz
	tar -xzf drush-$DRUSH_VERSION.tar.gz
	rm drush-$DRUSH_VERSION.tar.gz
	DRUSH="php $AEGIR_HOME/drush/drush.php"
fi

if $DRUSH help > /dev/null ; then
	msg "Drush seems to be functionning properly"
else
	msg "Drush is broken ($DRUSH help failed)"
	exit 1
fi

if ! $DRUSH help | grep -q "^ make" ; then
	msg "Installing drush make in $AEGIR_HOME/.drush"
	mkdir -p $AEGIR_HOME/.drush
	$DRUSH dl drush_make --destination=$AEGIR_HOME/.drush
else
	msg "Drush make already seems to be installed"
fi

if ! $DRUSH help | grep -q "^ provision install" ; then
	msg "Installing provision backend in $AEGIR_HOME/.drush"
	mkdir -p $AEGIR_HOME/.drush
	if [ "$AEGIR_VERSION" = "HEAD" ]; then
		( cd $AEGIR_HOME && cvs -d ":pserver:anonymous:anonymous@cvs.drupal.org:/cvs/drupal" co -d .drush/provision contributions/modules/provision )
	else
		$DRUSH dl provision-$AEGIR_VERSION --destination=$AEGIR_HOME/.drush
	fi
else
	msg "Provision already seems to be installed"
fi

if ! [ -e $HOSTMASTER_DIR ] ; then
	msg "Deploying hostmaster application"
	$DRUSH hostmaster make $HOSTMASTER_DIR
	cd $HOSTMASTER_DIR
	mkdir sites/$AEGIR_DOMAIN
	cp sites/default/default.settings.php sites/$AEGIR_DOMAIN/settings.php
	chmod g+w sites/$AEGIR_DOMAIN/settings.php
	mkdir sites/$AEGIR_DOMAIN/files
	chmod 2770 sites/$AEGIR_DOMAIN/files
	chgrp $WEB_GROUP sites/$AEGIR_DOMAIN/settings.php
	chgrp $WEB_GROUP sites/$AEGIR_DOMAIN/files
fi

if ! [ -e $AEGIR_HOME/config/vhost.d/$AEGIR_DOMAIN ]; then
	sed -e "s#DocumentRoot .*#DocumentRoot $HOSTMASTER_DIR#" -e "s#Directory .*#Directory $HOSTMASTER_DIR>#" -e "s/ServerName .*/ServerName $AEGIR_DOMAIN/" $HOSTMASTER_DIR/profiles/hostmaster/apache2.conf.txt > $AEGIR_HOME/config/vhost.d/$AEGIR_DOMAIN
	msg "Installed apache configuration file for $AEGIR_DOMAIN, you will need to restart apache"
fi

msg "Install process complete: follow the wizard"

cat <<EOF
Now point your browser to http://$AEGIR_DOMAIN/install.php and proceed
with the remainder of the installation using the Hostmaster Install profile.
Some of the instructions given, you will already have completed, but carefully
read each step in turn to ensure you don't miss anything.
EOF