#!/bin/sh -e
#
# 2012-2016 Steven Armstrong (steven-cdist at armstrong.cc)
# 2016 Carlos Ortigoza (carlos.ortigoza at ungleich.ch)
# 2016 Nico Schottelius (nico.schottelius at ungleich.ch)
# 2020 Dennis Camera (dennis.camera at ssrq-sds-fds.ch)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
# Configure system-wide locale by modifying i18n file.
#

key=$__object_id
onchange_cmd=  # none, by default
quote_value=false

catval() {
    # shellcheck disable=SC2059
    printf "$($quote_value && echo '"%s"' || echo '%s')" "$(cat "$1")"
}


os=$(cat "$__global/explorer/os")

case $os
in
    debian)
        os_version=$(cat "${__global}/explorer/os_version")
        if expr "${os_version}" '>=' 4 >/dev/null
        then
            # Debian 4 (etch) and later
            locale_conf="/etc/default/locale"
        else
            locale_conf="/etc/environment"
        fi
        ;;
    devuan)
        locale_conf="/etc/default/locale"
        ;;
    ubuntu)
        os_version=$(cat "${__global}/explorer/os_version")
        if expr "${os_version}" '>=' 6.10 >/dev/null
        then
            # Ubuntu 6.10 (edgy) and later
            locale_conf="/etc/default/locale"
        else
            locale_conf="/etc/environment"
        fi
        ;;
    archlinux)
        locale_conf="/etc/locale.conf"
        ;;
    centos|redhat|scientific)
        # shellcheck source=/dev/null
        version_id=$(. "${__global}/explorer/os_release" && echo "${VERSION_ID:-0}")
        if expr "${version_id}" '>=' 7 >/dev/null
        then
            locale_conf="/etc/locale.conf"
        else
            locale_conf="/etc/sysconfig/i18n"
        fi
        ;;
    fedora)
        # shellcheck source=/dev/null
        version_id=$(. "${__global}/explorer/os_release" && echo "${VERSION_ID:-0}")
        if expr "${version_id}" '>=' 18 >/dev/null
        then
            locale_conf="/etc/locale.conf"
            quote_value=false
        else
            locale_conf="/etc/sysconfig/i18n"
        fi
        ;;
    gentoo)
        case $(cat "${__global}/explorer/init")
        in
            (*openrc*)
                locale_conf="/etc/env.d/02locale"
                onchange_cmd="env-update --no-ldconfig"
                quote_value=true
                ;;
            (systemd)
                locale_conf="/etc/locale.conf"
                ;;
        esac
        ;;
    suse)
        os_version=$(cat "${__global}/explorer/os_version")
        os_major=$(expr "${os_version}" : '\([0-9]\{1,\}\)')

        # https://documentation.suse.com/sles/15-SP2/html/SLES-all/cha-suse.html#sec-suse-l10n
        if expr "${os_major}" '>=' 15 \& "${os_major}" != 42
        then
            # It seems that starting with SuSE 15 the systemd /etc/locale.conf
            # is the preferred way to set locales, although
            # /etc/sysconfig/language is still available.
            # Older documentation doesn't mention /etc/locale.conf, even though
            # is it created when localectl is used.
            locale_conf="/etc/locale.conf"
        else
            locale_conf="/etc/sysconfig/language"
            quote_value=true
            key="RC_${__object_id}"
        fi
        ;;
    voidlinux)
        locale_conf="/etc/locale.conf"
        ;;
    *)
        echo "Your operating system ($os) is currently not supported by this type (${__type##*/})." >&2
        echo "Please contribute an implementation for it if you can." >&2
        exit 1
        ;;
esac

__file "${locale_conf}" --state exists --owner root --group root --mode 0644

require="__file/${locale_conf}" \
__key_value "${locale_conf}:${key}" \
    --file "${locale_conf}" \
    --key "${key}" \
    --delimiter '=' --exact_delimiter \
    --state "$(cat "${__object}/parameter/state")" \
    --value "$(catval "${__object}/parameter/value")" \
    --onchange "${onchange_cmd}"