#!/usr/bin/env bash

main() {
    local username="${1:-abc}"
    local uid="${2:-1000}"
    local gid="${3:-1000}"
    local home="${4:-/home/abc}"

    usermod -d "/root" "${username}"
    groupmod -o -g "${gid}" "${username}"
    usermod -o -u "${uid}" "${username}"
    usermod -d "${home}" "${username}"

    # Ensure tty group exists with GID 4 (Alpine standard)
    if ! getent group tty >/dev/null; then
        addgroup -g 4 tty
    fi

    # Add user to tty group for /dev/pts/* access
    addgroup "${username}" tty 2>/dev/null

    if tty -s; then
        local tty_device
        tty_device="$(tty)"

        if [ -f "${tty_device}" ]; then
            chmod g+rw "${tty_device}" 2>/dev/null
        fi
    fi
}
main "${@}"