/** History requirement
- Document can have embedded sub-documents
- Document can have referenced documents
- Document can be referenced by documents

- On save:
  * copy current version
  *
*/

const mongoose = require('mongoose')

const historySchema = new mongoose.Schema({
  author: [mongoose.Schema.Types.ObjectId],
  created: Date,
  version: Number,
  tag: String,
  reference: [mongoose.Schema.Types.ObjectId]
})

const basicSchema = {
  name: {
    type: String,
    maxlength: 20,
    required: true },
  tag: {
    type: String,
    maxlength: 10,
    required: true },
  description: {
    type: String,
    maxlength: 200 }
}

const collection = {
  ...basicSchema,
  __history: [historySchema]
}

module.exports = { basicSchema, collection }