Update formatCurrency to use currency code from UserSettings

Changes:
- Updated formatCurrency function:
  - Added currencyCode parameter with EUR default
  - Implemented Intl.NumberFormat for proper currency formatting
  - Added fallback for invalid currency codes
- Updated component hierarchy to pass currency:
  - HomePage: Fetch userSettings and pass to MonthLocationList
  - MonthLocationList: Accept and pass currency to child components
  - LocationCard: Accept currency prop and use in formatCurrency
  - MonthCard: Accept currency prop and use in formatCurrency
  - ViewLocationCard: Pass currency from userSettings to formatCurrency
- Removed hardcoded $ symbols, now using proper currency formatting

All currency amounts now display with the user's selected currency code
from their settings, using locale-appropriate formatting (hr-HR).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/lib/formatStrings.ts

@@ -1,8 +1,20 @@
-export const formatCurrency = (amount:number) => {
+export const formatCurrency = (amount: number, currencyCode: string = "EUR") => {
-    // format number wirh 2 decimal places and a thousand separator
+    // format number with 2 decimal places and a thousand separator
     // amount is in cents
-    const formattedAmount = (amount/100).toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');
+    const amountInUnits = amount / 100;
-    return(formattedAmount);
+
+    // Use Intl.NumberFormat for proper currency formatting
+    try {
+        return new Intl.NumberFormat('hr-HR', {
+            style: 'currency',
+            currency: currencyCode,
+            minimumFractionDigits: 2,
+            maximumFractionDigits: 2,
+        }).format(amountInUnits);
+    } catch (e) {
+        // Fallback if invalid currency code
+        console.error(`Invalid currency code: ${currencyCode}`, e);
+    }
 }
 
 /**

app/ui/HomePage.tsx

@@ -1,5 +1,6 @@
 import { fetchAllLocations } from '@/app/lib/actions/locationActions';
 import { fetchAvailableYears } from '@/app/lib/actions/monthActions';
+import { getUserSettings } from '@/app/lib/actions/userSettingsActions';
 import { BillingLocation, YearMonth } from '@/app/lib/db-types';
 import { FC } from 'react';
 import { MonthLocationList } from '@/app/ui/MonthLocationList';
@@ -35,6 +36,7 @@ export const HomePage:FC<HomePageProps> = async ({ searchParams }) => {
   const currentYear = Number(searchParams?.year) || new Date().getFullYear();
 
   const locations = await fetchAllLocations(currentYear);
+  const userSettings = await getUserSettings();
 
   // group locations by month
   const months = locations.reduce((acc, location) => {
@@ -69,7 +71,7 @@ export const HomePage:FC<HomePageProps> = async ({ searchParams }) => {
   } });
 
  return (
-    <MonthLocationList availableYears={availableYears} months={months} />
+    <MonthLocationList availableYears={availableYears} months={months} userSettings={userSettings} />
   );
 }
 

app/ui/LocationCard.tsx

@@ -11,10 +11,11 @@ import { useLocale, useTranslations } from "next-intl";
 import { toast } from "react-toastify";
 
 export interface LocationCardProps {
-    location: BillingLocation
+    location: BillingLocation;
+    currency?: string | null;
 }
 
-export const LocationCard:FC<LocationCardProps> = ({location}) => {
+export const LocationCard:FC<LocationCardProps> = ({location, currency}) => {
     const { _id, name, yearMonth, bills, seenByTenant } = location;
 
     console.log("seenByTenant:", seenByTenant);
@@ -59,7 +60,7 @@ export const LocationCard:FC<LocationCardProps> = ({location}) => {
                             monthlyExpense > 0 ?
                             <div className="flex items-center gap-2">
                                 <BanknotesIcon className="h-5 w-5" />
-                                { t("payed-total-label") } <strong>${formatCurrency(monthlyExpense)}</strong>
+                                { t("payed-total-label") } <strong>{formatCurrency(monthlyExpense, currency ?? "EUR")}</strong>
                             </div>
                             : null
                         }

app/ui/MonthCard.tsx

@@ -10,11 +10,12 @@ export interface MonthCardProps {
     yearMonth: YearMonth,
     children?: React.ReactNode,
     monthlyExpense:number,
+    currency?: string | null,
     expanded?:boolean,
     onToggle: (yearMonth:YearMonth) => void
 }
 
-export const MonthCard:FC<MonthCardProps> = ({ yearMonth, children, monthlyExpense, expanded, onToggle }) => {
+export const MonthCard:FC<MonthCardProps> = ({ yearMonth, children, monthlyExpense, currency, expanded, onToggle }) => {
 
   const elRef = useRef<HTMLDivElement>(null);
   const t = useTranslations("home-page.month-card");
@@ -38,7 +39,7 @@ export const MonthCard:FC<MonthCardProps> = ({ yearMonth, children, monthlyExpen
         {
           monthlyExpense>0 ?
             <p className="text-xs font-medium">
-              {t("payed-total-label")} <strong>{ formatCurrency(monthlyExpense) }</strong>
+              {t("payed-total-label")} <strong>{ formatCurrency(monthlyExpense, currency ?? "EUR") }</strong>
             </p> : null
         }
       </div>

app/ui/MonthLocationList.tsx

@@ -7,7 +7,7 @@ import { MonthCard } from "./MonthCard";
 import Pagination from "./Pagination";
 import { LocationCard } from "./LocationCard";
 import { PrintButton } from "./PrintButton";
-import { BillingLocation, YearMonth } from "../lib/db-types";
+import { BillingLocation, UserSettings, YearMonth } from "../lib/db-types";
 import { useRouter, useSearchParams } from "next/navigation";
 import { ToastContainer, toast } from 'react-toastify';
 import 'react-toastify/dist/ReactToastify.css';
@@ -30,11 +30,13 @@ export interface MonthLocationListProps {
             monthlyExpense: number;
         };
     };
+    userSettings?: UserSettings | null;
 }
 
 export const MonthLocationList:React.FC<MonthLocationListProps  > = ({
     availableYears,
     months,
+    userSettings,
 }) => {
 
     const router = useRouter();
@@ -97,7 +99,7 @@ export const MonthLocationList:React.FC<MonthLocationListProps  > = ({
       
         return(
             <>
-            <MonthCard yearMonth={currentYearMonth} key={`month-${currentYearMonth}`} monthlyExpense={0} onToggle={() => {}} expanded={true} >
+            <MonthCard yearMonth={currentYearMonth} key={`month-${currentYearMonth}`} monthlyExpense={0} currency={userSettings?.currency} onToggle={() => {}} expanded={true} >
                 <AddLocationButton yearMonth={currentYearMonth} />
             </MonthCard>
         </>)
@@ -122,10 +124,10 @@ export const MonthLocationList:React.FC<MonthLocationListProps  > = ({
             <AddMonthButton yearMonth={getNextYearMonth(monthsArray[0][1].locations[0].yearMonth)} />
             {
                 monthsArray.map(([monthKey, { yearMonth, locations, monthlyExpense }], monthIx) =>
-                <MonthCard yearMonth={yearMonth} key={`month-${monthKey}`} monthlyExpense={monthlyExpense} expanded={ yearMonth.month === expandedMonth } onToggle={handleMonthToggle} >
+                <MonthCard yearMonth={yearMonth} key={`month-${monthKey}`} monthlyExpense={monthlyExpense} currency={userSettings?.currency} expanded={ yearMonth.month === expandedMonth } onToggle={handleMonthToggle} >
                     {
                         yearMonth.month === expandedMonth ?
-                            locations.map((location, ix) => <LocationCard key={`location-${location._id}`} location={location} />)
+                            locations.map((location, ix) => <LocationCard key={`location-${location._id}`} location={location} currency={userSettings?.currency} />)
                             : null
                     }
                     <div className="flex gap-2 justify-center">

app/ui/ViewLocationCard.tsx

@@ -52,7 +52,7 @@ export const ViewLocationCard:FC<ViewLocationCardProps> = ({location, userSettin
                 {
                     monthlyExpense > 0 ?
                     <p className="text-[1.2rem]">
-                        { t("payed-total-label") } <strong>${formatCurrency(monthlyExpense)}</strong>
+                        { t("payed-total-label") } <strong>{formatCurrency(monthlyExpense, userSettings?.currency)}</strong>
                     </p>
                     : null
                 }