132 lines
3.7 KiB
JavaScript
132 lines
3.7 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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const _diff = (obj1, obj2) =>
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Object.keys(obj1).reduce(
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(res, curr) =>
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obj1[curr] === obj2[curr] ? res : (res[curr] = obj2[curr]) && res,
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{}
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)
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const _queriesToUpdateDifferences = (ownAddresses, remoteAddresses) =>
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ownAddresses
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.map(ownAddress => {
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const remoteAddress = remoteAddresses.find(
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address =>
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address.BusinessPartner === ownAddress.BusinessPartner &&
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address.AddressID === ownAddress.AddressID
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)
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if (remoteAddress) {
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const diff = _diff(ownAddress, remoteAddress)
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if (Object.keys(diff).length) {
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return UPDATE(ShippingAddresses)
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.set(diff)
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.where({
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BusinessPartner: ownAddress.BusinessPartner,
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AddressID: ownAddress.AddressID
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})
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}
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}
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})
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.filter(el => el)
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bupaSrv.on('sap/S4HANAOD/c532/BO/BusinessPartner/Changed', async msg => {
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console.log('>> Message:', msg.data)
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const BusinessPartner = msg.data.KEY[0].BUSINESSPARTNER
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const tx = cds.transaction(msg)
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const selectQuery = SELECT.from(ShippingAddresses).where({ BusinessPartner })
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const ownAddresses = await tx.run(selectQuery)
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if (ownAddresses && ownAddresses.length > 0) {
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const txExt = bupaSrv.transaction(msg)
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try {
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const remoteAddresses = await txExt.run(selectQuery)
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const queriesToUpdateDifferences = _queriesToUpdateDifferences(
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ownAddresses,
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remoteAddresses
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)
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await tx.run(queriesToUpdateDifferences)
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} catch (e) {
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console.error(e)
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}
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}
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})
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async function _readAddresses (req) {
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console.log('Addresses', ShippingAddresses)
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const BusinessPartner = req.user.id
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const txExt = bupaSrv.transaction(req)
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const selectQuery = req.query.from(ShippingAddresses).where({ BusinessPartner })
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try {
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return txExt.run(selectQuery)
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} catch (e) {
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console.log(e)
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}
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}
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async function _fillAddress (req) {
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if (req.data.shippingAddress_AddressID) {
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const BusinessPartner = req.user.id
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const txExt = bupaSrv.transaction(req)
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try {
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const response = await txExt.run(
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SELECT.from(ShippingAddresses).where({
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AddressID: req.data.shippingAddress_AddressID,
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BusinessPartner
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})
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)
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if (response && response.length === 1) {
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const tx = cds.transaction(req)
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const insertQuery = INSERT.into(ShippingAddresses).entries(response)
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await tx.run(insertQuery)
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}
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} catch (e) {}
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}
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}
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async function _reduceStock (req) {
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const { Items: OrderItems } = req.data
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if (OrderItems && OrderItems.length > 0) {
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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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}
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function _checkMandatoryParams (req) {
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if (!req.data.Items || !req.data.Items.length) {
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return req.reject('Please order at least one item.')
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}
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if (!req.data.shippingAddress_AddressID) {
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return req.reject(
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'Please enter a valid shpping address.',
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'shippingAddress_AddressID'
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)
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}
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}
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module.exports = cds.service.impl(function () {
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this.before('CREATE', 'Orders', _reduceStock)
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this.before('CREATE', 'Orders', _checkMandatoryParams)
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this.before('PATCH', 'Orders', _fillAddress)
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this.on('READ', 'Addresses', _readAddresses)
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})
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