import * as Constants from "~/node_common/constants";
import * as Utilities from "~/node_common/utilities";
import * as Data from "~/node_common/data";
import * as Strings from "~/common/strings";

export default async (req, res) => {
  const id = Utilities.getIdFromCookie(req);
  if (!id) {
    return res
      .status(403)
      .send({ decorator: "SERVER_ADD_TO_SLATE_USER_NOT_FOUND", error: true });
  }

  const user = await Data.getUserById({
    id,
  });

  if (!user) {
    return res.status(404).send({
      decorator: "SERVER_ADD_TO_SLATE_USER_NOT_FOUND",
      error: true,
    });
  }

  if (user.error) {
    return res.status(500).send({
      decorator: "SERVER_ADD_TO_SLATE_USER_NOT_FOUND",
      error: true,
    });
  }

  const slate = await Data.getSlateById({ id: req.body.slate.id });

  if (!slate) {
    return res.status(404).send({
      decorator: "SERVER_ADD_TO_SLATE_SLATE_NOT_FOUND",
      error: true,
    });
  }

  if (slate.error) {
    return res.status(500).send({
      decorator: "SERVER_ADD_TO_SLATE_SLATE_NOT_FOUND",
      error: true,
    });
  }

  let newObjects = [];
  if (Array.isArray(req.body.data)) {
    newObjects = [...req.body.data];
  } else {
    newObjects = [req.body.data];
  }

  let slateURLs = slate.data.objects.map((file) => file.url);

  let addlObjects;
  if (req.body.fromSlate) {
    let newURLs = [];
    addlObjects = newObjects.filter((each) => {
      if (slateURLs.includes(each.url) || newURLs.includes(each.url)) {
        return false;
      }
      newURLs.push(each.url);
      return true;
    });
  } else {
    let newIPFSs = [];
    addlObjects = newObjects.filter((each) => {
      if (
        slateURLs.includes(
          `${Constants.IPFS_GATEWAY_URL}/${each.ipfs.replace("/ipfs/", "")}`
        ) ||
        newIPFSs.includes(each.ipfs)
      ) {
        return false;
      }
      newIPFSs.push(each.ipfs);
      return true;
    });
  }
  addlObjects = addlObjects.map((each) => {
    let url = each.url
      ? each.url
      : `${Constants.IPFS_GATEWAY_URL}/${each.ipfs.replace("/ipfs/", "")}`;
    let cid = each.cid
      ? each.cid
      : each.ipfs
      ? each.ipfs.replace("/ipfs/", "")
      : Strings.urlToCid(each.url);
    return {
      blurhash: each.blurhash,
      cid: cid,
      size: each.size,
      id: each.id,
      ownerId: req.body.fromSlate ? each.ownerId : user.id,
      name: each.name,
      title: each.title,
      type: each.type,
      url,
    };
  });

  const objects = [...slate.data.objects, ...addlObjects];

  const update = await Data.updateSlateById({
    id: slate.id,
    updated_at: new Date(),
    data: {
      ...slate.data,
      objects,
    },
  });

  if (!update) {
    return res.status(500).send({
      decorator: "SERVER_ADD_TO_SLATE_ERROR",
      error: true,
    });
  }

  if (update.error) {
    return res.status(500).send({
      decorator: "SERVER_ADD_TO_SLATE_ERROR",
      error: true,
    });
  }

  return res.status(200).send({
    decorator: "SERVER_SLATE_ADD_TO_SLATE",
    added: addlObjects.length,
    skipped: newObjects.length - addlObjects.length,
    slate,
  });
};