4a2139a5f2
What's working: - Address information on OP - Reading of S/4HANA Addresses - Translations
76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
const cds = require('@sap/cds')
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const { Books, ShippingAddresses } = cds.entities
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const bupaSrv = cds.connect.to('API_BUSINESS_PARTNER')
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/** Service implementation for CatalogService */
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module.exports = cds.service.impl(function () {
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this.after(
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'READ',
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'Books',
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each => each.stock > 111 && _addDiscount2(each, 11)
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)
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this.before('CREATE', 'Orders', _reduceStock)
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this.before('CREATE', 'Orders', _fillAddress)
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this.on('READ', 'Addresses', _readAddresses)
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// this.after('READ', 'Orders', (data, req) => {
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// if (req.query.SELECT.columns.includes('shippingAddress')) {
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// data.shippingAddress = _readAddresses()
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// }
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// })
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})
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function _readAddresses (req) {
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// TODO: Delegate to external service
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return [
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{ AddressID: 'add1', CityName: 'Walldorf', StreetName: 'ExampleStreet' },
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{ AddressID: 'add2', CityName: 'Schwetzingen', StreetName: 'BestStreet' }
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]
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}
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/** Add some discount for overstocked books */
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function _addDiscount2 (each, discount) {
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each.title += ` -- ${discount}% discount!`
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}
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async function _fillAddress (req) {
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console.log('filling addresses')
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if (req.data.shippingAdress_AddressID) {
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const tx = bupaSrv.transaction(req)
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const result = tx.run(
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SELECT.one(['AdressID, CityName, StreetName, HouseNumber'])
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.from('A_BusinessPartnerAddress')
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.where({ AddressID: req.data.shippingAdress_AddressID })
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)
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if (result) {
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const tx2 = cds.transaction(req)
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console.log('filling addresses for real')
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tx2.run(INSERT.into(ShippingAddresses).entries([result]))
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}
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}
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}
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/** Reduce stock of ordered books if available stock suffices */
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async function _reduceStock (req) {
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const { Items: OrderItems } = req.data
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const all = await cds.transaction(req).run(() =>
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OrderItems.map(order =>
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UPDATE(Books)
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.set('stock -=', order.amount)
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.where('ID =', order.book_ID)
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.and('stock >=', order.amount)
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)
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)
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all.forEach((affectedRows, i) => {
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if (affectedRows === 0)
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req.error(
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409,
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`${OrderItems[i].amount} exceeds stock for book #${
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OrderItems[i].book_ID
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}`
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)
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})
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}
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