#!/bin/sh
set -eu

: "${PLAYER_ORIGIN:?PLAYER_ORIGIN must be set}"

if ! printf '%s' "$PLAYER_ORIGIN" | grep -Eq '^https?://[A-Za-z0-9._:-]+$'; then
    echo "PLAYER_ORIGIN must be an origin such as http://192.168.1.20:3000" >&2
    exit 64
fi

envsubst '${PLAYER_ORIGIN}' \
    < /etc/nginx/templates/nginx.conf.template \
    > /tmp/nginx.conf

nginx -t -c /tmp/nginx.conf
exec nginx -c /tmp/nginx.conf -g 'daemon off;'