// @flow
import naturalSort from "../../shared/utils/naturalSort";
import { Collection } from "../models";

type Document = {
  children: Document[],
  id: string,
  title: string,
  url: string,
};

const sortDocuments = (documents: Document[]): Document[] => {
  const orderedDocs = naturalSort(documents, "title");

  return orderedDocs.map((document) => ({
    ...document,
    children: sortDocuments(document.children),
  }));
};

export default function present(collection: Collection) {
  const data = {
    id: collection.id,
    url: collection.url,
    name: collection.name,
    description: collection.description,
    icon: collection.icon,
    color: collection.color || "#4E5C6E",
    private: collection.private,
    createdAt: collection.createdAt,
    updatedAt: collection.updatedAt,
    deletedAt: collection.deletedAt,
    documents: undefined,
  };

  // Force alphabetical sorting
  data.documents = sortDocuments(collection.documentStructure);

  return data;
}