#!/bin/sh
# Postrm script for DokuWiki by Matti Pöllä <mpo@iki.fi>
# Based on postrm for PHPWiki written by Matthew Palmer.

set -e

# Disable apache2 configuration
disable_apache2_conf()
{
    if [ -e /usr/share/apache2/apache2-maintscript-helper ]
    then
        . /usr/share/apache2/apache2-maintscript-helper
        apache2_invoke disconf dokuwiki
    fi
    rm -f /etc/apache2/conf-available/dokuwiki.conf
}


# Reload apache2
reload_apache2()
{
    # Nothing, since `apache2_invoke disconf` already did what had to be done
    :
}

# Disable lighttpd configuration
disable_lighttpd_conf()
{
    if command -v lighty-disable-mod > /dev/null
    then
        lighty-disable-mod dokuwiki || true
    fi
    rm -f /etc/lighttpd/conf-available/50-dokuwiki.conf
}


# Reload lighttpd
reload_lighttpd()
{
    # That may fail if lighttpd is not running: this is not a real problem,
    # just ignore it.
    invoke-rc.d lighttpd force-reload || true
}


# Above debhelper's additions that clean the debconf database!

# Actions on remove needing debconf
if [ "$1" = "remove" ] && [ -e /usr/share/debconf/confmodule ]; then
    . /usr/share/debconf/confmodule
    # Disable web servers configuration (it makes no sense to keep webservers
    # configured for a wiki that has been removed)
    db_get dokuwiki/system/configure-webserver
    webservers="$RET"
    db_get dokuwiki/system/restart-webserver
    restart="$RET"
    for webserver in $webservers
    do
        webserver=${webserver%,}
        disable_${webserver}_conf "$@"
        if [ "$restart" = "true" ]
        then
            # Note: configure_apache2 uses functions from
            # /usr/share/apache2/apache2-maintscript-helper, which require an
            # unmodified environment, including maintainer script arguments "$@"
            reload_$webserver "$@"
        fi
    done
fi

# Actions on purge needing debconf
if [ "$1" = "purge" ] && [ -e /usr/share/debconf/confmodule ]; then
    . /usr/share/debconf/confmodule
    db_get dokuwiki/system/purgepages || true
    if [ "$RET" = "true" ]; then
        rm -rf /var/lib/dokuwiki/data/attic/*
        rm -rf /var/lib/dokuwiki/data/media/*
        rm -rf /var/lib/dokuwiki/data/media_attic/*
        rm -rf /var/lib/dokuwiki/data/media_meta/*
        rm -rf /var/lib/dokuwiki/data/meta/*
	rm -rf /var/lib/dokuwiki/data/pages/*
        if [ -e /var/lib/dokuwiki/farm ]
        then
            rm -rf /var/lib/dokuwiki/farm
        fi
    fi
fi

# Actions on remove not needing debconf
if [ "$1" = "remove" ]; then
    rm -rf /var/lib/dokuwiki/data/cache
    rm -rf /var/lib/dokuwiki/data/index
    if [ -e /var/lib/dokuwiki/farm ] && [ "$(stat -c '%h' "/var/lib/dokuwiki/farm")" -gt 2 ]
    then
        for site in /var/lib/dokuwiki/farm/* ; do
            rm -rf -- "$site/data/cache"
            rm -rf -- "$site/data/index"
        done
    fi
fi

# Actions on purge not needing debconf
if [ "$1" = "purge" ]; then
    if command -v ucf > /dev/null; then
	ucf --purge /etc/dokuwiki/apache.conf
	ucf --purge /etc/dokuwiki/lighttpd.conf
	ucf --purge /var/lib/dokuwiki/acl/acl.auth.php
	ucf --purge /var/lib/dokuwiki/acl/users.auth.php
        ucf --purge /etc/dokuwiki/htaccess
        ucf --purge /etc/dokuwiki/local.php
    fi

    if command -v ucfr > /dev/null; then
        ucfr --purge dokuwiki /etc/dokuwiki/apache.conf
        ucfr --purge dokuwiki /etc/dokuwiki/lighttpd.conf
	ucfr --purge dokuwiki /var/lib/dokuwiki/acl/acl.auth.php
	ucfr --purge dokuwiki /var/lib/dokuwiki/acl/users.auth.php
	ucfr --purge dokuwiki /etc/dokuwiki/htaccess
        ucfr --purge dokuwiki /etc/dokuwiki/local.php
    fi

    for ext in '' '~' '%' .bak .ucf-new .ucf-old .ucf-dist;  do
        rm -f /etc/dokuwiki/apache.conf$ext
        rm -f /etc/dokuwiki/lighttpd.conf$ext
        rm -f /var/lib/dokuwiki/acl/acl.auth.php$ext
        rm -f /var/lib/dokuwiki/acl/users.auth.php$ext
        rm -f /etc/dokuwiki/htaccess$ext
        rm -f /etc/dokuwiki/local.php$ext
    done

    if dpkg-statoverride --list /var/lib/dokuwiki/plugins >/dev/null 2>&1; then
        dpkg-statoverride --remove /var/lib/dokuwiki/plugins
    fi

    if dpkg-statoverride --list /etc/dokuwiki >/dev/null 2>&1; then
        dpkg-statoverride --remove /etc/dokuwiki
    fi

    # Remove sites configuration
    if [ -e /etc/dokuwiki/farm ]
    then
        rm -rf /etc/dokuwiki/farm
    fi

    # Remove plugin configuration
    if [ -e /etc/dokuwiki/tpl ]
    then
        rm -rf /etc/dokuwiki/tpl
    fi
fi

# Remove some configuration files backups, cf. preinst upgrade.
if [ "$1" = "abort-upgrade" ] ; then
    rm /usr/share/dokuwiki/.htaccess.upgrade
fi

# Automatically added by dh_installdebconf/13.11.4
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
	. /usr/share/debconf/confmodule
	db_purge
fi
# End automatically added section


# Stop debconf, or the script would stall forever if we restarted lighttpd
# (cf. debconf-devel(7) (search for "daemon") and bug #133029)
if [ "$1" = "purge" ]
then
    if [ -e /usr/share/debconf/confmodule ]
    then
        db_stop
    fi
fi

exit 0