#!/usr/bin/env bash

set -euo pipefail

D8_FLAGS_BASE="${D8_FLAGS_BASE:---allow-natives-syntax --expose-gc --maglev}"

if [[ $# -lt 2 ]]; then
  echo "usage: $0 <d8_path> <file.js> [args...]" >&2
  exit 1
fi

D8_BIN="$1"
JS_FILE="$2"
shift 2

if [[ "$D8_BIN" != /* ]]; then
  D8_BIN="$PWD/$D8_BIN"
fi

if [[ "$JS_FILE" != /* ]]; then
  JS_FILE="$PWD/$JS_FILE"
fi

if [[ ! -x "$D8_BIN" ]]; then
  echo "missing d8 at: $D8_BIN" >&2
  exit 1
fi

if [[ ! -f "$JS_FILE" ]]; then
  echo "missing js file at: $JS_FILE" >&2
  exit 1
fi

D8_OUT="$(cd "$(dirname "$D8_BIN")" && pwd)"
export LD_LIBRARY_PATH="$D8_OUT${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"

exec "$D8_BIN" ${D8_FLAGS_BASE} ${D8_FLAGS_EXTRA:-} "$JS_FILE" "$@"