add cancel invoice action

media-store/srv/invoices-service.js

@@ -1,4 +1,7 @@
 const cds = require("@sap/cds");
+const moment = require("moment");
+const DATE_TIME_PATTERN = "YYYY-MM-DD HH:MM:SS";
+const LEVERAGE_DURATION = 1; // in hours
 
 module.exports = async function () {
   const db = await cds.connect.to("db"); // connect to database service
@@ -15,13 +18,16 @@ module.exports = async function () {
     );
   });
 
-  this.on("READ", "MyInvoices", async (req) => {
+  this.on("READ", "Invoices", async (req) => {
     return await db.run(req.query.where({ customer_ID: req.user.attr.ID }));
   });
 
   this.on("invoice", async (req) => {
     const { tracks } = req.data;
     const customerId = req.user.attr.ID;
+    const invoiceDate = moment().utc().format(DATE_TIME_PATTERN);
+    console.log("invoiceDate", invoiceDate);
+    console.log(invoiceDate);
     const total = tracks.reduce(
       (acc, { unitPrice }) => acc + Number(unitPrice),
       0
@@ -37,8 +43,8 @@ module.exports = async function () {
     const transaction = await db.tx(req);
     await transaction.run(
       INSERT.into(Invoices)
-        .columns("ID", "customer_ID", "total")
-        .values(lastInvoiceId + 1, customerId, total)
+        .columns("ID", "customer_ID", "total", "invoiceDate")
+        .values(lastInvoiceId + 1, customerId, total, invoiceDate)
     );
     await transaction.run(
       INSERT.into(InvoiceItems)
@@ -54,4 +60,32 @@ module.exports = async function () {
     );
     await transaction.commit();
   });
+
+  this.on("cancelInvoice", async (req) => {
+    const { ID } = req.data;
+    const currentInvoice = await db.run(
+      SELECT.one(Invoices).where({
+        ID,
+        customer_ID: req.user.attr.ID,
+      })
+    );
+    if (!currentInvoice) {
+      req.reject(
+        404,
+        "Seems like you are not owning this invoice or it is not exists"
+      );
+    }
+    console.log(currentInvoice.invoiceDate);
+
+    const x = moment().utc().format(DATE_TIME_PATTERN);
+    const y = moment(currentInvoice.invoiceDate).format(DATE_TIME_PATTERN);
+    const yy = moment(x).diff(y);
+    const durationInHours = moment.duration(yy);
+    console.log(durationInHours.asHours());
+    if (durationInHours.asHours() > LEVERAGE_DURATION) {
+      req.reject(400, "Leverage time was expired");
+    }
+
+    return await db.run(DELETE.from(Invoices, ID));
+  });
 };