#!/bin/sh

mkdir -p /mnt/overlay/etc/

# Network
mkdir -p /mnt/overlay/etc/NetworkManager/system-connections

if [ ! -f /mnt/overlay/etc/hostname ]; then
    cp -fp /etc/hostname /mnt/overlay/etc/hostname
fi

if [ ! -f /mnt/overlay/etc/hosts ]; then
    cp -fp /etc/hosts /mnt/overlay/etc/hosts
fi

# TimeSync
TIMESYNCD_CONF_DIR=/mnt/overlay/etc/systemd/timesyncd.conf.d
mkdir -p "${TIMESYNCD_CONF_DIR}"

# Move settings from a persisted copy of timesyncd.conf into a drop-in,
# can be removed in OS 19.0
if [ -f /mnt/overlay/etc/systemd/timesyncd.conf ]; then
    # Drop the section header, the shipped defaults, comments and blank lines
    SETTINGS=$(grep -Ev '^(\[Time\]|FallbackNTP=time\.cloudflare\.com|ConnectionRetrySec=10|[[:space:]]*#.*|[[:space:]]*)$' \
        /mnt/overlay/etc/systemd/timesyncd.conf)
    if [ -n "${SETTINGS}" ] && [ ! -f "${TIMESYNCD_CONF_DIR}/20-custom.conf" ]; then
        printf '[Time]\n%s\n' "${SETTINGS}" > "${TIMESYNCD_CONF_DIR}/20-custom.conf"
    fi
    rm -f /mnt/overlay/etc/systemd/timesyncd.conf
fi

if [ ! -L /mnt/overlay/etc/localtime ]; then
    ln -sf /usr/share/zoneinfo/Etc/UTC /mnt/overlay/etc/localtime
fi

# Console
if [ ! -f /mnt/overlay/etc/vconsole.conf ]; then
    echo "KEYMAP=us" > /mnt/overlay/etc/vconsole.conf
fi