virtuals.js

module.exports = function VIRTUALS(Schemas) {

  const Marketplace = Schemas.marketplace.schema;
  const Users = Schemas.users.schema;
  const Items = Schemas.items.schema;
  const Cosmetics = Schemas.cosmetics.schema;
  const Relationships = Schemas.relationships.schema;

  Marketplace.virtual("authorData", {
    ref: "UserDB",
    localField: "author",
    foreignField: "id",
    justOne: true,
  });

  Marketplace.virtual("moreFromAuthor", {
    ref: "marketplace",
    localField: "author",
    foreignField: "author",
    justOne: false,
  });

  Marketplace.virtual("moreLikeThis", {
    ref: "marketplace",
    localField: "item_id",
    foreignField: "item_id",
    justOne: false,
  });

  Marketplace.virtual("itemData", {
    ref: function () {
      return ["background", "medal", "flair", "sticker", "shade"].includes(
        this.item_type
      )
        ? "Cosmetic"
        : "Item";
    },
    localField: "item_id",
    foreignField: "_id",
    justOne: true,
  });

  // USER

  Users.virtual("itemsData", {
    ref: "Item",
    localField: "modules.inventory.id",
    foreignField: "id",
    justOne: false,
  });

  Users.virtual("fanarts", {
    ref: "fanart",
    localField: "id",
    foreignField: "author_ID",
    justOne: false,
  });

  Users.virtual("collections", {
    ref: "UserCollection",
    localField: "id",
    foreignField: "id",
    select: "collections",
    justOne: true,
  });

  Users.virtual("marriageData", {
    ref: "Relationship",
    localField: "featuredMarriage",
    foreignField: "_id",
    justOne: true,
  });

  // RELATIONSHIPS

  Relationships.virtual("usersData", {
    ref: "UserDB",
    localField: "users",
    foreignField: "id",
    justOne: false,
  });

  // ITEM

  Items.virtual("stickers", {
    ref: "Cosmetic",
    localField: "icon",
    foreignField: "id",
    justOne: false,
  });

  Cosmetics.virtual("packData", {
    ref: "Item",
    localField: "series_id",
    foreignField: "icon",
    justOne: true,
  });
};