#!/bin/sh 

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package> <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see /usr/share/doc/packaging-manual/
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.

set -e

# Use the same order as for mv
replace_file()
{
	file_source="$1"
	file_dest="$2"

	if [ ! -f $file_source ]; then
		echo "$file_source has already been moved"
	else
		if [ ! -f $file_dest ]; then
			mv -v $file_source $file_dest || exit 10
		else
			echo "ucf --debconf-ok $file_source $file_dest"
			ucf --debconf-ok $file_source $file_dest || exit 11
		fi
		chown www-data:www-data $file_dest
	fi
}

update_localconfig() 
{
	sed -r \
	 -e "s/db_host[[:space:]]*=[[:space:]]*[\"'].*[\"']/db_host = '$dbserver'/g" \
	 -e "s/db_port[[:space:]]*=[[:space:]]*.*;/db_port = $dbport;/g" \
	 -e "s/db_name[[:space:]]*=[[:space:]]*[\"'].*[\"']/db_name = '$dbname'/g" \
	 -e "s/db_user[[:space:]]*=[[:space:]]*[\"'].*[\"']/db_user = '$dbuser'/g" \
	 -e "s/db_pass[[:space:]]*=[[:space:]]*[\"'].*[\"']/db_pass = '$dbpass'/g" \
	 -e "s/create_htaccess[[:space:]]*=[[:space:]]*.+;/create_htaccess = 0;/g"
}

create_answerfile()
{
    answerfile="$1"

    db_get "bugzilla3/bugzilla_admin_name"
    bugzilla_admin="$RET"
    
    db_get "bugzilla3/bugzilla_admin_real_name"
    bugzilla_name="$RET"

    db_get "bugzilla3/bugzilla_admin_pwd"
    bugzilla_pwd="$RET"

    echo "\$answer{'db_host'} = '$dbserver';" > $answerfile
    echo "\$answer{'db_port'} = $dbport;" >> $answerfile
    echo "\$answer{'db_name'} = '$dbname';" >> $answerfile
    echo "\$answer{'db_user'} = '$dbuser';" >> $answerfile
    echo "\$answer{'db_pass'} = q[\$db_pass = '$dbpass';];" >> $answerfile
    echo "\$answer{'ADMIN_OK'} = 'Y';" >> $answerfile
    echo "\$answer{'ADMIN_EMAIL'} = '$bugzilla_admin';" >> $answerfile
    echo "\$answer{'ADMIN_PASSWORD'} = '$bugzilla_pwd';" >> $answerfile
    echo "\$answer{'ADMIN_REALNAME'} = '$bugzilla_name';" >> $answerfile
    echo "\$ansser{'NO_PAUSE'} = 1;" >> $answerfile
}

init_db_vars()
{
    if [ -z "$dbport" ]; then
        dbport="3306"
    fi
    if [ -z "$dbserver" ]; then
        dbserver="localhost"
    fi
    if [ -z "$dbtype" ]; then
        dbtype="mysql"
    fi
}


get_db_variables()
{
    # If dbconfig-common is correctly installed call it 
    if [ -f /usr/share/dbconfig-common/dpkg/postinst.mysql ]; then
        . /usr/share/dbconfig-common/dpkg/postinst.mysql 
        dbvars_file=/etc/bugzilla3/dbconfig-params
        dbc_generate_include=sh:$dbvars_file
        dbc_go bugzilla3 $@
        . $dbvars_file
        echo "init_db_vars ($dbserver, $dbname, $dbuser, $dbpass)"
        init_db_vars
    
    # Else, we cannot continue the postinst phase
    else
        echo "bugzilla: ERROR -- dbconfig-common is not installed, cannot continue the postinstphase." >&2
        exit 55
    fi
}

cleanup()
{
	# Do not remove backup of `params_dest` if new configuration is missing.
	if [ -e "$params_backup" ]; then
		if [ ! -e "$params_dest" ]; then
			mv -f "$params_backup" "$params_dest"
		else
			rm "$params_backup"
		fi
	fi
	rm -f "$answerfile" "$localconfig_new" "$params_new" /etc/bugzilla3/*.ucf-old
}

if [ "$1" = "configure" ]; then
	# Debconf is needed here for the postinst-db.pl script
	. /usr/share/debconf/confmodule

	trap cleanup EXIT QUIT

	params_src="/usr/share/bugzilla3/debian/params"
	params_dest="/etc/bugzilla3/params"
	params_backup=`mktemp -p /etc/bugzilla3 -t params.XXXXXXXXXX`
	params_new="/etc/bugzilla3/params.new"

	localconfig_src="/usr/share/bugzilla3/debian/localconfig"
	localconfig_dest="/etc/bugzilla3/localconfig"
	localconfig_new=`mktemp -p /etc/bugzilla3 -t localconfig.XXXXXXXXXX`

	answerfile=`mktemp -p /etc/bugzilla3 -t answerfile.XXXXXXXXXX`

	get_db_variables $@
 
	# If there's no $params_dest yet, let's move our package version
	# Note that if we upgraded a previous package, we might have already 
	# moved the previous params file to the right place.
	if [ ! -e "$params_dest" ]; then
		mkdir -p `dirname $params_dest`
		cp -p "$params_src" "$params_dest"
	fi

	umask 0027
	if [ -n "$dbserver" ] && [ -n "$dbuser" ] && [ -n "$dbpass" ]; then
		echo "Creating new localconfig ($dbserver, $dbname, $dbuser, $dbpass)"
		if [ -e $localconfig ]; then
			cat $localconfig_src | update_localconfig > $localconfig_new
		fi

		# Only if the configuration file does not match the original we ask the user.
		if cmp $localconfig_src $localconfig_dest; then
			mv -f $localconfig_new $localconfig_dest
		else
			replace_file $localconfig_new $localconfig_dest || exit 8
			rm -f $localconfig_new
		fi
	fi

	# checksetup.pl write the new param file in /etc/bugzilla3/params
	mv -f "$params_dest" "$params_backup"

	# Call checksetup now that everything is ready
	# The params file will then be updated if needed, the resulting file
	# will be saved in $params_new
	echo "Running checksetup.pl with answer file"
	create_answerfile $answerfile
	if [ ! -e $answerfile ]; then
		echo >&2 "$0: Unable to find the answer file $answerfile for checksetup.pl"
		exit 13
	fi

	$DEBIAN_DEBUG_CHECKSETUP /usr/share/bugzilla3/lib/checksetup.pl $answerfile --verbose | \
		sed -e 's,/usr/bin/perl .*install "Template::Plugin::GD::Image".*,apt-get install libtemplate-plugin-gd-perl,g' \
		    -e 's,/usr/bin/perl .*install "HTML::Scrubber".*,apt-get install libhtml-scrubber-perl,g' \
		    -e 's,/usr/bin/perl .*install "mod_perl2".*,apt-get install libapache2-mod-perl2,g' \
		    -e 's,/usr/bin/perl .*install "MIME::Parser".*,apt-get install libmime-tools-perl,g' \
		    -e 's,/usr/bin/perl .*install "CGI".*,apt-get install libcgi-pm-perl,g' \
		    -e 's,/usr/bin/perl .*install "SOAP::Lite".*,apt-get install libsoap-lite-perl,g' \
		    -e 's,/usr/bin/perl .*install "Chart::Base".*,apt-get install libchart-perl,g' \
		    -e 's,/usr/bin/perl .*install "GD".*,apt-get install libgd-gd2-perl,g' \
		    -e 's,/usr/bin/perl .*install "GD::Text".*,apt-get install libgd-text-perl,g' \
		    -e 's,/usr/bin/perl .*install "GD::Graph".*,apt-get install libgd-graph-perl,g' \
		    -e 's,/usr/bin/perl .*install "XML::Twig".*,apt-get install libxml-twig-perl,g' \
		    -e 's,/usr/bin/perl .*install "LWP::UserAgent".*,apt-get install libwww-perl,g' \
		    -e 's,/usr/bin/perl .*install "Image::Magic".*,apt-get install perlmagic,g' \
		    -e 's,/usr/bin/perl .*install "Net::LDAP".*,apt-get install libnet-ldap-perl,g' \
		    -e 's,/usr/bin/perl .*install "HTML::Parser".*,apt-get install libhtml-parser-perl,g'
	if [ ! -e "$params_dest" ]; then
		echo >&2 "$0: Configuration of bugzilla3 failed. Please check if the system requirements are fulfilled."
		exit 14
	fi
	mv -f $params_dest $params_new

	# Restore old configuration
	mv -f $params_backup $params_dest

	# Only if the file does not match the original we ask the user.
	if cmp $params_dest $params_src; then
		mv -f $params_new $params_dest
	else
		# Now, let's ask our fellow user if he likes to use it
		replace_file $params_new $params_dest
	fi

	# Let's fix the permissions for the /var/lib directory
	datadir=/var/lib/bugzilla3
	chown -R www-data:www-data $datadir
	chmod -R g+rw $datadir
	chmod -R u+rw $datadir
	chown -R www-data:www-data /etc/bugzilla3

	# fix the permission for the contrib files
	if [ -d /usr/share/bugzilla3/contrib ]; then
		find /usr/share/bugzilla3/contrib -name '*.pl' -exec chmod a+x {} \;
		find /usr/share/bugzilla3/contrib -name '*.sh' -exec chmod a+x {} \;
	fi

	# update all the bugzilla sites
	if [ -d /etc/bugzilla3/sites ]; then
		for site in `cd /etc/bugzilla3/sites/ && ls -1`; do 
			echo "Running checksetup.pl for site: $site"
			X_BUGZILLA_SITE="$site" /usr/share/bugzilla3/lib/checksetup.pl 
		done
	fi

	cleanup

	# Let's close cleanly debconf	
	db_stop
fi 

#DEBHELPER#