implemented bill update

app/bills/[id]/edit/page.tsx

@@ -1,4 +1,4 @@
-import { Location } from '@/app/lib/db-types';
+import { PlainLocation, PlainBill, MongoLocation } from '@/app/lib/db-types';
 import clientPromise from '@/app/lib/mongodb';
 import { BillEditForm } from '@/app/ui/BillEditForm';
 import { ObjectId } from 'mongodb';
@@ -9,9 +9,28 @@ const fetchBillById = async (locationID:string, billID:string) => {
     const db = client.db("rezije");
 
     // find a location with the given locationID
-    const billLocation = await db.collection<Location>("lokacije").findOne({ _id: locationID })
+    const billLocation = await db.collection<MongoLocation>("lokacije").findOne({ _id: locationID })
+
+    if(!billLocation) {
+        console.log(`Location ${locationID} not found`);
+        return(null);
+    }
+
     // find a bill with the given billID
-    return(billLocation?.bills.find(({ _id }) => _id.toString() === billID))
+    const mongoBill = billLocation?.bills.find(({ _id }) => _id.toString() === billID);
+
+    if(!mongoBill) {
+        console.log('Bill not found');
+        return(null);
+    }
+
+    const { _id, ...billBase  } = mongoBill;
+
+    return({
+        id: _id.toString(),
+        ...billBase
+    } as PlainBill);
+
 }
 
 export default async function Page({ params:{ id } }: { params: { id:string } }) {
@@ -21,7 +40,6 @@ export default async function Page({ params:{ id } }: { params: { id:string } })
     const bill = await fetchBillById(invoiceID, billID);
 
     if (!bill) {
-        console.log('Bill not found');
         notFound();
     }
     return (

app/lib/actions.ts

@@ -1,2 +1,69 @@
 'use server';
 
+import { z } from 'zod';
+import { revalidatePath } from 'next/cache';
+import { redirect } from 'next/navigation';
+import clientPromise from './mongodb';
+import { ObjectId } from 'mongodb';
+
+export type State = {
+    errors?: {
+        billName?: string[];
+    };
+    message?:string | null;
+}
+
+const FormSchema = z.object({
+    _id: z.string(),
+    billName: z.string({
+      invalid_type_error: 'Please select a bill name',
+    }),
+  });
+
+const UpdateBill = FormSchema.omit({ _id: true });
+
+export async function updateBill(locationId: string, billId:string, prevState:State, formData: FormData) {
+
+    const validatedFields = UpdateBill.safeParse({
+        billName: formData.get('billName'),
+    });
+
+    // If form validation fails, return errors early. Otherwise, continue...
+    if(!validatedFields.success) {
+        console.log("updateBill.validation-error");
+        return({
+            errors: validatedFields.error.flatten().fieldErrors,
+            message: "Missing Fields. Field to Update Bill.",
+        });
+    }
+
+    const {
+        billName,
+    } = validatedFields.data;
+
+    // update the bill in the mongodb
+    const client = await clientPromise;
+    const db = client.db("rezije");
+
+    // find a location with the given locationID
+    const post = await db.collection<Location>("lokacije").updateOne(
+        {
+            _id: locationId // find a location with the given locationID
+        },
+        {
+            $set: {
+                "bills.$[elem].name": billName,
+            }
+        }, {
+            arrayFilters: [
+                { "elem._id": { $eq: new ObjectId(billId) } } // find a bill with the given billID
+            ]
+        });
+
+    console.log("updateBill.success", post);
+
+    // clear the cache for the path
+    revalidatePath('/');
+    // go to the bill list
+    redirect('/');
+}

app/lib/db-types.ts

@@ -1,16 +1,40 @@
 import { ObjectId } from "mongodb";
 
-export interface Location {
-    _id: string;
+/** Bill basic data */
+export interface LocationBase {
     name: string;
-    bills: Bill[];
     /** the value is encoded as yyyymm (i.e. 202301) */
     yearMonth: number;
 };
 
-export interface Bill {
+
+/** bill object in the form returned by MongoDB */
+export interface MongoLocation {
     _id: ObjectId;
+    bills: MongoBill[];
+};
+
+/** plain-object Location version */
+export interface PlainLocation {
+    id: string;
+    bills: PlainBill[];
+};
+
+
+/** Bill basic data */
+export interface BillBase {
     name: string;
     paid: boolean;
     document?: string|null;
 };
+
+/** bill object in the form returned by MongoDB */
+export interface MongoBill extends BillBase {
+    _id: ObjectId;
+};
+
+
+/** plain-object bill version */
+export interface PlainBill extends BillBase {
+    id: string;
+};

app/ui/BillEditForm.tsx

@@ -1,35 +1,46 @@
-import { Cog8ToothIcon, DocumentIcon, TrashIcon } from "@heroicons/react/24/outline";
-import { Bill } from "../lib/db-types";
+"use client";
+
+import { TrashIcon } from "@heroicons/react/24/outline";
+import { PlainBill } from "../lib/db-types";
 import { FC } from "react";
-import { ObjectId } from "mongodb";
+import { useFormState } from "react-dom";
+import { updateBill } from "../lib/actions";
+
 
 export interface BillEditFormProps {
     invoiceID: string,
-    bill: Bill
+    bill: PlainBill
 }
 
-export const BillEditForm:FC<BillEditFormProps> = ({ bill: { name, paid } }) =>
+export const BillEditForm:FC<BillEditFormProps> = ({ invoiceID, bill: { id, name, paid } }) => {
+
+    const initialState = { message: null, errors: {} };
+    const updateBillWithId = updateBill.bind(null, invoiceID, id);
+    const [ state, dispatch ] = useFormState(updateBillWithId, initialState);
+
+    return(
     <div className="card card-compact card-bordered max-w-sm bg-base-100 shadow-s my-1">
-    <div className="card-body">
-    <form>
-        <TrashIcon className="h-[1em] w-[1em] absolute cursor-pointer text-error bottom-5 right-4 text-2xl" />
-        <input type="text" placeholder="Naziv računa" className="input input-bordered w-full" defaultValue={name} />
-        {
-            // <textarea className="textarea textarea-bordered my-1 w-full max-w-sm block" placeholder="Opis" value="Pričuva, Voda, Smeće"></textarea>
-            // <a href="#document.pdf" className='text-center block max-w-[24em] text-nowrap truncate inline-block'>
-            // <DocumentIcon className="h-[1em] w-[1em] text-2xl inline-block mr-1" />
-            // 2023-22-12 document GSKG račun za 2023.pdf
-            // </a>
-        }
-        <input type="file" className="file-input file-input-bordered w-full max-w-sm file-input-xs my-2" />
-        <div className="form-control w-32 p-1">
-        <label className="cursor-pointer label p-0">
-            <span className="label-text">Plaćeno</span> 
-            <input type="checkbox" className="toggle toggle-success" checked={paid} />
-        </label>
+        <div className="card-body">
+            <form action={ dispatch }>
+                <TrashIcon className="h-[1em] w-[1em] absolute cursor-pointer text-error bottom-5 right-4 text-2xl" />
+                <input id="billName" name="billName" type="text" placeholder="Naziv računa" className="input input-bordered w-full" defaultValue={name} />
+                {
+                    // <textarea className="textarea textarea-bordered my-1 w-full max-w-sm block" placeholder="Opis" value="Pričuva, Voda, Smeće"></textarea>
+                    // <a href="#document.pdf" className='text-center block max-w-[24em] text-nowrap truncate inline-block'>
+                    // <DocumentIcon className="h-[1em] w-[1em] text-2xl inline-block mr-1" />
+                    // 2023-22-12 document GSKG račun za 2023.pdf
+                    // </a>
+                }
+                <input type="file" className="file-input file-input-bordered w-full max-w-sm file-input-xs my-2" />
+                <div className="form-control w-32 p-1">
+                <label className="cursor-pointer label p-0">
+                    <span className="label-text">Plaćeno</span> 
+                    <input type="checkbox" className="toggle toggle-success" defaultChecked={paid} />
+                </label>
+                </div>
+                <textarea className="textarea textarea-bordered my-2 w-full max-w-sm block" placeholder="Napomena"></textarea>
+                <button type="submit" className="btn btn-primary">Spremi</button>
+            </form>
         </div>
-        <textarea className="textarea textarea-bordered my-2 w-full max-w-sm block" placeholder="Napomena"></textarea>
-        <button className="btn btn-primary">Spremi</button>
-    </form>
-    </div>
-    </div>
+    </div>);
+}