#!/bin/sh
set -e

# Remove a no-longer used conffile
rm_conffile() {
    CONFFILE="$1"

    if [ -e "$CONFFILE" ]; then
        md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
        old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE '{s/ obsolete$//;s/.* //p}\"`"

        if [ "$md5sum" != "$old_md5sum" ]; then
            echo "Obsolete conffile $CONFFILE has been modified by you."
            echo "Saving as $CONFFILE.dpkg-bak ..."
            mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
        else
            echo "Removing obsolete conffile $CONFFILE ..."
            rm -f "$CONFFILE"
        fi
    fi
}

# Prepare to move a conffile without triggering a dpkg question
prep_mv_conffile() {
    local PKGNAME="$1"
    local CONFFILE="$2"

    [ -e "$CONFFILE" ] || return 0

    local md5sum="$(md5sum $CONFFILE | sed -e 's/ .*//')"
    local old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKGNAME | \
            sed -n -e "\' $CONFFILE ' { s/ obsolete$//; s/.* //; p }")"
    if [ "$md5sum" = "$old_md5sum" ]; then
        rm -f "$CONFFILE"
    fi
}

case "$1" in
  install|upgrade)
    if dpkg --compare-versions "$2" le "0.73-0ubuntu1"; then
        rm_conffile "/etc/xdg/mythbuntu/xfce4-session/xfce4-session.rc"
        rm_conffile "/etc/xdg/mythbuntu/xfce4-session/xfce4-splash.rc"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/desktop/icons.screen0.rc"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/desktop/menu.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/desktop/menudefs.hook"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/desktop/xfce-registered-categories.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/desktop/xfdesktoprc"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/helpers.rc"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/desktop.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/gtk.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/orage.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/workspaces.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/xfwm4.xml"
        rm_conffile "/etc/xdg/mythbuntu/xfce4/mcs_settings/xfwm4_keys.xml"
        [ -L /etc/xdg/mythbuntu/menus ] && rm -f /etc/xdg/mythbuntu/menus || true
    fi
    if dpkg --compare-versions "$2" le "0.79-0ubuntu1"; then
        rm_conffile "/etc/xdg/mythbuntu/gdm/gdm.conf"
    fi
    if dpkg --compare-versions "$2" lt "0.86-0ubuntu2"; then
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xsettings.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xfce4-session.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xfwm4.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/xfconf/xfce-perchannel-xml/xfprint.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/tasklist-2.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/separator-3.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/pager-3.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/actions-6.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/xfce4-menu-1.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/clock-5.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/systray-4.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/panels.xml"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/launcher-2.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/launcher-3.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/xfce4/panel/tasklist-11907684281.rc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/applications/defaults.list"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/menus/xfce-applications.menu"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/Thunar/volmanrc"
        prep_mv_conffile mythbuntu-default-settings "/etc/xdg/mythbuntu/Thunar/thunarrc"
    fi
    if dpkg --compare-versions "$2" le "1.05" && [ -L "/usr/share/themes/Mythbuntu/gtk-2.0" ]; then
        rm -f /usr/share/themes/Mythbuntu/gtk-2.0
    fi
    ;;
esac

#DEBHELPER#
