"use strict";

function resolveAsset(manifestUrl, manifest, id = "main") {
  const asset = manifest.assets.find((candidate) => candidate.id === id);
  if (!asset) throw new Error(`Unknown asset '${id}'`);
  return new URL(asset.uri, manifestUrl).href;
}

function resolveRuntime(manifestUrl, manifest, id) {
  const runtime = (manifest.runtime || []).find((candidate) => candidate.id === id);
  if (!runtime) throw new Error(`Unknown runtime asset '${id}'`);
  return new URL(runtime.uri, manifestUrl).href;
}

function placement(manifest) {
  return { ...manifest.placement, coordinateSystem: manifest.coordinateSystem };
}

module.exports = { resolveAsset, resolveRuntime, placement };