const mongoose = require('mongoose')
const timestamp = require('mongoose-timestamp')

const postBookmarkSchema = new mongoose.Schema({
  postId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Post',
    required: true,
    index: true,
  },
  userId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: true,
    index: true,
  },
})

postBookmarkSchema.index({ postId: 1, userId: 1 }, { unique: true })

postBookmarkSchema.plugin(timestamp)
const PostBookmarkModel = mongoose.model('PostBookmark', postBookmarkSchema)

module.exports = PostBookmarkModel