const whitelistedHosts = [/^.*\.reticulum\.io$/, /^.*hubs\.mozilla\.com$/, /^hubs\.local$/];
const isHostWhitelisted = hostname => !!whitelistedHosts.filter(r => r.test(hostname)).length;
let mediaAPIEndpoint = "/api/v1/media";

if (process.env.RETICULUM_SERVER) {
  mediaAPIEndpoint = `https://${process.env.RETICULUM_SERVER}${mediaAPIEndpoint}`;
}

const fetchContentType = async url => fetch(url, { method: "HEAD" }).then(r => r.headers.get("content-type"));

const resolveMediaCache = new Map();
export const resolveMedia = async url => {
  const parsedUrl = new URL(url);
  if (resolveMediaCache.has(url)) return resolveMediaCache.get(url);

  const resolved =
    (parsedUrl.protocol !== "http:" && parsedUrl.protocol !== "https:") || isHostWhitelisted(parsedUrl.hostname)
      ? { raw: url, origin: url }
      : await fetch(mediaAPIEndpoint, {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({ media: { url } })
        }).then(r => r.json());

  const contentType = (resolved.meta && resolved.meta.expected_content_type) || (await fetchContentType(resolved.raw));
  resolved.contentType = contentType;

  resolveMediaCache.set(url, resolved);
  return resolved;
};

let interactableId = 0;
export const addMedia = (src, resize = false) => {
  const scene = AFRAME.scenes[0];

  const entity = document.createElement("a-entity");
  entity.id = "interactable-media-" + interactableId++;
  entity.setAttribute("networked", { template: "#interactable-media" });
  entity.setAttribute("media-loader", { src, resize });
  scene.appendChild(entity);
  return entity;
};