yearMonth split into year + month

app/lib/actions/monthActions.ts

@@ -0,0 +1,80 @@
+'use server';
+
+import { revalidatePath } from 'next/cache';
+import { redirect } from 'next/navigation';
+import clientPromise, { getDbClient } from '../dbClient';
+import { ObjectId } from 'mongodb';
+import { BillingLocation } from '../db-types';
+import { AuthenticatedUser } from '../types/next-auth';
+import { withUser } from '../auth';
+
+/**
+ * Server-side action which adds a new month to the database
+ * @param locationId location of the bill
+ * @param billId ID of the bill
+ * @param prevState previous state of the form
+ * @param formData form data
+ * @returns 
+ */
+export const addMonth = withUser(async (user:AuthenticatedUser, yearString: string, monthString: string) => {
+    const { id: userId } = user;
+
+    // update the bill in the mongodb
+    const dbClient = await getDbClient();
+
+    const year = parseInt(yearString);
+    const month = parseInt(monthString);
+
+    const prevYear = month === 1 ? year - 1 : year;
+    const prevMonth = month === 1 ? 12 : month - 1;
+
+    // find all locations for the previous month
+    const prevMonthLocations = await dbClient.collection<BillingLocation>("lokacije").find({
+        userId, // make sure that the locations belongs to the user
+        year: prevYear,
+        month: prevMonth,
+    });
+
+    const newMonthLocationsCursor = prevMonthLocations.map((prevLocation) => {
+        return({
+            // copy all the properties from the previous location
+            ...prevLocation,
+            // assign a new ID
+            _id: (new ObjectId()).toHexString(),
+            year: year,
+            month: month,
+            // copy bill array, but set all bills to unpaid and remove attachments and notes
+            bills: prevLocation.bills.map((bill) => {
+                return {
+                    ...bill,
+                    paid: false,
+                    attachment: null,
+                    notes: null,
+                }
+            })
+        } as BillingLocation);
+    });
+
+    const newMonthLocations = await newMonthLocationsCursor.toArray()
+    await dbClient.collection<BillingLocation>("lokacije").insertMany(newMonthLocations);
+
+    // clear the cache for the path
+    revalidatePath('/');
+    // go to the bill list
+    redirect('/');
+});
+
+export async function gotoHome() {
+    redirect('/');   
+}
+
+export const fetchAvailableYears = withUser(async (user:AuthenticatedUser) => {
+    const { id: userId } = user;
+
+    const dbClient = await getDbClient();
+
+    // query mnogodb for all `yearMonth` values
+    const yearMonths = await dbClient.collection<BillingLocation>("lokacije").distinct("year", { userId });
+
+    return(yearMonths);
+})