#!/bin/sh
set -eu

case "$1" in
    configure)
        if [ -f /etc/locale.gen ]; then
            if grep -Eq '^\s*#\s*en_GB\.UTF-8\s+UTF-8\s*$' /etc/locale.gen; then
                sed -i 's/^\s*#\s*\(en_GB\.UTF-8\s\+UTF-8\s*\)$/\1/' /etc/locale.gen
            fi
        fi

        if command -v locale-gen >/dev/null 2>&1; then
            if ! locale -a 2>/dev/null | grep -Eiq '^en_GB\.utf-?8$'; then
                locale-gen en_GB.UTF-8 || true
            fi
        fi
        ;;
esac

exit 0