#!/bin/bash
set -e

USERNAME="${_BUILD_ARG_USERNAME:-"automatic"}"
USER_UID="${_BUILD_ARG_UID:-"automatic"}"
USER_GID="${_BUILD_ARG_GID:-"automatic"}"

apt-get update
apt-get install -y sudo passwd

if [ "$USERNAME" = "auto" ] || [ "$USERNAME" = "automatic" ]; then
    for name in devcontainer vscode node codespace; do
        if id -u "$name" >/dev/null 2>&1; then
            USERNAME="$name"
            break
        fi
    done
    [ -z "$USERNAME" ] && USERNAME="vscode"
fi

if id -u "$USERNAME" >/dev/null 2>&1; then
    [ "$USER_GID" != "automatic" ] && groupmod -g "$USER_GID" "$(id -gn "$USERNAME")"
    [ "$USER_UID" != "automatic" ] && usermod -u "$USER_UID" "$USERNAME"
else
    [ "$USER_GID" = "automatic" ] && groupadd "$USERNAME" || groupadd -g "$USER_GID" "$USERNAME"
    [ "$USER_UID" = "automatic" ] && useradd -m -s /bin/bash -g "$USERNAME" "$USERNAME" || useradd -m -s /bin/bash -u "$USER_UID" -g "$USERNAME" "$USERNAME"
fi

[ "$USERNAME" != "root" ] && echo "$USERNAME ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/$USERNAME && chmod 0440 /etc/sudoers.d/$USERNAME