movie.js

const mongoose = require("mongoose");

const MovieSchema = new mongoose.Schema(
  {
    adult: { type: Boolean },
    backdrop_path: { type: String },
    genre_ids: [Number],
    id: { type: Number, required: true, unique: true },
    original_language: { type: String },
    original_title: { type: String },
    overview: { type: String },
    popularity: { type: Number },
    poster_path: { type: String },
    release_date: { type: Date },
    title: { type: String },
    video: { type: Boolean },
    vote_average: { type: Number },
    vote_count: { type: Number },
  },
  {
    toJSON: { virtuals: true }, // So `res.json()` and other `JSON.stringify()` functions include virtuals
    toObject: { virtuals: true }, // So `console.log()` and other functions that use `toObject()` include virtuals
  }
);

MovieSchema.virtual("liking_users", {
  ref: "UserModel",
  localField: "_id", // The user _id should match the viewers field in movies
  foreignField: "liked_movies",
});

MovieSchema.virtual("later_watchers", {
  ref: "UserModel",
  localField: "_id", // The user _id should match the viewers field in movies
  foreignField: "to_see_later",
});

MovieSchema.virtual("masking_users", {
  ref: "UserModel",
  localField: "_id", // The user _id should match the viewers field in movies
  foreignField: "masked_movies",
});

const MovieModel = mongoose.model(
  "MovieModel",
  MovieSchema,
  "movies_populated"
);

module.exports = MovieModel;