northwind-rest-api/backend/models/product.js

Local REST API Exposing Northwind Database.

const Joi = require("joi");
const BaseModel = require("./base-model");

class Product extends BaseModel {

    constructor(product) {
        super(product.id);
        this.name = product.name;
        this.price = this.isNumeric(product.price) ? +product.price : product.price;
        this.stock = this.isNumeric(product.stock) ? +product.stock : product.stock;
        this.imageUrl = product.imageUrl;
    }

    isNumeric(value) {
        if(value === "") return false;
        if(isNaN(value)) return false;
        return true;
    }

    static #validationSchema = Joi.object({
        id: Joi.number().optional().integer().positive(),
        name: Joi.string().required().min(2).max(100),
        price: Joi.number().required().min(0).max(10000),
        stock: Joi.number().required().min(0).max(10000).integer(),
        imageUrl: Joi.string().optional().min(5).max(100)
    }).error(BaseModel.customErrors);

    validate() {
        const result = Product.#validationSchema.validate(this);
        return result.error?.message;
    }
}

module.exports = Product;