'use strict';

const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const ObjectId = Schema.Types.ObjectId;

const ProductSchema = new Schema({
    description: {
        type: String,
        required: true
    },
    category: {
        type: ObjectId,
        ref: 'Category',
        required: true
    },
    price: {
        type: ObjectId,
        ref: 'Price',
        required: true
    },
    creation_date: {
        type: Date,
        default: new Date()
    }
});

ProductSchema.post('validate', doc => {
    if (!doc._id) {
        doc.creation_date = Date.now();
    }
});

module.exports = mongoose.model('Product', ProductSchema);