#!/bin/sh
set -eu

is_true() {
    case "$(printf '%s' "${1:-}" | tr '[:upper:]' '[:lower:]')" in
        1 | true | yes | on) return 0 ;;
        *) return 1 ;;
    esac
}

is_integer() {
    case "${1:-}" in
        '' | *[!0-9]*) return 1 ;;
        *) return 0 ;;
    esac
}

run_as_requested_user() {
    uid="${USER_UID:-}"
    gid="${USER_GID:-}"

    if [ -z "$uid" ] && [ -z "$gid" ]; then
        return 1
    fi

    if [ -z "$uid" ] || [ -z "$gid" ]; then
        echo "Both USER_UID and USER_GID must be set together." >&2
        exit 1
    fi

    if ! is_integer "$uid" || ! is_integer "$gid"; then
        echo "USER_UID and USER_GID must be numeric." >&2
        exit 1
    fi

    mkdir -p /app/.ani-cli-web/home
    chown "$uid:$gid" /downloads /app/.ani-cli-web /app/.ani-cli-web/home

    cd /app
    exec setpriv \
        --reuid "$uid" \
        --regid "$gid" \
        --clear-groups \
        env HOME=/app/.ani-cli-web/home python3 /app/app.py "$@"
}

mkdir -p /downloads /app/.ani-cli-web

if is_true "${UPDATE_ON_START:-false}"; then
    echo "Checking for ani-cli updates with sudo ani-cli --update"
    sudo ani-cli --update
fi

run_as_requested_user "$@" || true

cd /app
exec python3 /app/app.py "$@"