#!/bin/bash

source /usr/bin/xivo-upgrade-functions

DPKG_OLD_SUFFIX=".dpkg-old"

list_modified_conffiles() {
    for conffile in $(sort /var/lib/dpkg/info/xivo-config.conffiles); do
        conffile_old="${conffile}${DPKG_OLD_SUFFIX}"
        if [ -f "$conffile_old" ]; then
            if is_conffile_old_ignored "$conffile_old"; then
                rm "$conffile_old"
            else
                echo "$conffile"
            fi
        fi
    done
}

display_warning_msg() {
    local modified_files="$1"
    cat <<-EOF
	WARNING: The following configuration files were overwritten during the upgrade:

	$modified_files

	To finish the upgrade, you must merge the new version with the old
	one. For example:

	   vimdiff FILENAME FILENAME${DPKG_OLD_SUFFIX}

	Once this is done, remove the old files and run "xivo-service restart".
	EOF
}

modified_conffiles=$(list_modified_conffiles)
if [ -n "$modified_conffiles" ]; then
    display_warning_msg "$modified_conffiles"
fi
