klapi/modules/Tax/index.js

const express = require('express');
const path = require('path');

const CrudModule = require('../../base/CrudModule');
const RepositorySystem = require('../../systems/RepositorySystem');
const RoutingSystem = require('../../systems/RoutingSystem');
const Actions = require('../../systems/ActionSystem');
const OneToOne = require('../../base/OneToOne');


let TaxScheme = {
	fields: [
		{
			key: "name",
			type: "text"
		},
		{
			key: "percentage",
			type: "decimal"
		}
	]
};
let ProductScheme = {
	fields: [
		{
			key: "untaxed_price",
			type: "decimal"
		}
	]
};
class TaxModule extends CrudModule {
	constructor(){
		super('/tax', [3,0,3,4,0], 'Tax');
		this.repository = RepositorySystem.create('Tax', TaxScheme);
		this.products = RepositorySystem.create('Tax', ProductScheme);
		this.setRepo(this.repository);

		//new OneToOne('Tax', 'Products');

		// this.users = RepositorySystem.create('Users'); // You can get any repo you want!!
		this.router = express.Router();
		this.init();
	}

	// Add logic to change price on get product!

	init() {
		// Actions.on('modelProducts', (model) => {
		// 	return this.repository.getPage(0,1000)
		// 	.then((taxes) => {
		// 		return {
		// 			...model,
		// 			"tax_id": {
		// 				disabled: true
		// 			}, 
		// 			"tax": {
		// 				Filter: {
		// 					type: "exact",
		// 					options: taxes.reduce((data,a) => {return {...data, [a.id]: a.name }}, {}),
		// 					name: "Tax",
		// 					field: 'tax_id',
		// 					order: 60
		// 				}
		// 			}
		// 		}
		// 	})
		// });
		Actions.on('postProducts', (prod) => {
			if(!prod["Tax_id"]) return prod;
			if(!prod["price"]) return prod;
				
			return this.repository.get('id', prod['Tax_id'])
			.then((taxes) => {
				if (!taxes.length)
					return prod;
				let tax = taxes[0];
				prod.untaxed_price = prod.price;
				prod.price = prod.untaxed_price * tax.percentage;
				return ;
			})
		});

		RoutingSystem.loadRoutes([], this.router, '/Tax');
	}

	decorate(product) {
		return this.repository.get('id', product.tax_id)
		.then((taxes) => {
			if(taxes.length) {
				product.tax = taxes[0] ? taxes[0].name : "-";
			}
			return product;
		});
	}
}

module.exports = TaxModule;