gatsby-pingbot/lib/schema.ts

import { model, models, Schema } from 'mongoose'

import type { URLSchema } from '../types/mongo'

const schema = new Schema<URLSchema>({
  url: {
    type: String,
    required: true,
    unique: true
  }
})

schema.path('url').validate(async function(value: string) {
  if (models.url) {
    return true
  }

  const count = await models.url.countDocuments({ url: value })

  return !count
}, 'URL already exists')

const URLModel = model<URLSchema>('url', schema)

export = URLModel