Milos Savkovic

react-native/.eslintrc.js

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+// https://docs.expo.dev/guides/using-eslint/
+module.exports = {
+  extends: 'expo',
+  ignorePatterns: ['/dist/*'],
+};

react-native/.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo
+
+app-example

react-native/README.md

@@ -1,37 +1,61 @@
-# React Native App Dashboard Challenge
-
-## Overview
-Create a React Native application that gives users a comprehensive dashboard by displaying their dynamically calculated account balance and a list of recent transactions.
-
-## Requirements
-
-### User Stories
-- **Account Balance:** Users can view their calculated account balance.
-- **Recent Transactions:** The dashboard shows the five most recent transactions.
-- **Full Transaction History:** Users can tap the "See all" button to view their complete transaction list.
-
-### API Endpoints
-Fetch data from the following endpoints:
-- **Products:** [https://628b46b07886bbbb37b46173.mockapi.io/api/v1/products](https://628b46b07886bbbb37b46173.mockapi.io/api/v1/products)
-- **Transactions:** [https://628b46b07886bbbb37b46173.mockapi.io/api/v1/transactions](https://628b46b07886bbbb37b46173.mockapi.io/api/v1/transactions)
-
-### Wireframes
-Refer to the provided wireframes for guidance on layout and design:
-
-| Dashboard | Transactions |
-| --------- | :----------: |
-| ![Dashboard](dashboard.png) | ![Transactions](transactions.png) |
-
-## Nice-to-Have Features
-- **Pull to Refresh:** Allow users to update the dashboard by pulling down on the list.
-- **Offline Support:** Cache data locally for offline viewing.
-- **Skeleton Loading Screens:** Display placeholders or spinners while data is loading.
-- **Modal View for Transactions:** When a user taps on a transaction, display a modal with detailed information about that transaction.
-
-## Challenge Instructions
-- **Fork the repository.**
-- **Build a clean, well-structured, and performant solution.**
-- **Commit your work frequently.**
-- **Submit your solution via a pull request.**
-
-Happy coding!
+# Account Dashboard App
+
+A React Native application that provides users with a comprehensive financial dashboard showing their account balance and transaction history.
+
+## Features
+
+### Core Features
+
+- **Account Balance**: Real-time calculated account balance display
+- **Recent Transactions**: View three most recent transactions on the dashboard
+- **Full Transaction History**: Access complete transaction list via "See all" button
+
+### Additional Features
+
+- **Pull to Refresh**: Update dashboard data by pulling down on the transaction list
+- **Dark/Light Mode**: Toggle between light and dark themes for better user experience
+- **Offline Support**: Cache data locally for viewing when offline
+- **Connection Status**: Display components to notify users of offline status and when connection restores using NetInfo
+- **Skeleton Loading Screens**: Show placeholder loaders while data is being fetched
+- **Modal Transaction Details**: Tap on any transaction to view detailed information in a modal
+
+## Technologies Used
+
+- React Native Expo
+- Expo Router
+- React Query (TanStack Query) for data fetching, caching, and state management
+- AsyncStorage for persistent offline data storage
+- NetInfo for network connectivity detection
+- NativeWind
+
+## Project Structure
+
+```
+project-root/
+├── app/
+│ ├── _layout.tsx
+│ ├── +not-found.tsx
+│ ├── index.tsx
+│ └── transactions.tsx
+├── assets/
+├── components/
+│ ├── shared/
+│ │ ├── Amount.tsx
+│ │ ├── ConnectionStatus.tsx
+│ │ ├── EmptyData.tsx
+│ │ ├── ScreenWrapper.tsx
+│ │ ├── Skeleton.tsx
+│ │ ├── Summary.tsx
+│ │ └── TransactionItem.tsx
+│ ├── ProductsCarousel.tsx
+│ ├── RecentTransactions.tsx
+│ └── ShowFullTransactions.tsx
+├── config/
+│ └── api-config.ts
+├── utils/
+│ └── index.ts
+└── hooks/
+ ├── useColorScheme.ts
+ ├── useProducts.ts
+ └── useTransactions.ts
+```

react-native/app.json

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+{
+  "expo": {
+    "name": "rand-challenge",
+    "slug": "rand-challenge",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/images/icon.png",
+    "scheme": "myapp",
+    "userInterfaceStyle": "automatic",
+    "newArchEnabled": true,
+    "ios": {
+      "supportsTablet": true,
+      "bundleIdentifier": "com.somias.rand-challenge",
+      "appleTeamId": "9V2Q5VWT8B"
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/images/adaptive-icon.png",
+        "backgroundColor": "#ffffff"
+      }
+    },
+    "web": {
+      "bundler": "metro",
+      "output": "static",
+      "favicon": "./assets/images/favicon.png"
+    },
+    "plugins": [
+      "expo-router",
+      [
+        "expo-splash-screen",
+        {
+          "image": "./assets/images/splash-icon.png",
+          "imageWidth": 200,
+          "resizeMode": "contain",
+          "backgroundColor": "#ffffff"
+        }
+      ]
+    ],
+    "experiments": {
+      "typedRoutes": true
+    }
+  }
+}

react-native/app/+not-found.tsx

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+import { Link, Stack } from "expo-router";
+import { StyleSheet, View, Text } from "react-native";
+
+export default function NotFoundScreen() {
+  return (
+    <>
+      <Stack.Screen options={{ title: "Oops!" }} />
+      <View style={styles.container}>
+        <Text>This screen doesn't exist.</Text>
+        <Link href="/" style={styles.link}>
+          <Text>Go to home screen!</Text>
+        </Link>
+      </View>
+    </>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    alignItems: "center",
+    justifyContent: "center",
+    padding: 20,
+  },
+  link: {
+    marginTop: 15,
+    paddingVertical: 15,
+  },
+});

react-native/app/_layout.tsx

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+import {
+  DarkTheme,
+  DefaultTheme,
+  ThemeProvider,
+} from "@react-navigation/native";
+import AsyncStorage from "@react-native-async-storage/async-storage";
+import { QueryClient } from "@tanstack/react-query";
+import { PersistQueryClientProvider } from "@tanstack/react-query-persist-client";
+import { createAsyncStoragePersister } from "@tanstack/query-async-storage-persister";
+import { useFonts } from "expo-font";
+import { Stack } from "expo-router";
+import * as SplashScreen from "expo-splash-screen";
+import { StatusBar } from "expo-status-bar";
+import { useEffect } from "react";
+import "react-native-reanimated";
+
+import "../global.css";
+
+import { useColorScheme } from "@/hooks/useColorScheme";
+
+// Prevent the splash screen from auto-hiding before asset loading is complete.
+SplashScreen.preventAutoHideAsync();
+
+const asyncStoragePersister = createAsyncStoragePersister({
+  storage: AsyncStorage,
+});
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      networkMode: "offlineFirst",
+      gcTime: 1000 * 60 * 60 * 24, // 24 hours
+    },
+  },
+});
+
+export default function RootLayout() {
+  const colorScheme = useColorScheme();
+  const [loaded] = useFonts({
+    SpaceMono: require("../assets/fonts/SpaceMono-Regular.ttf"),
+  });
+
+  useEffect(() => {
+    if (loaded) {
+      SplashScreen.hideAsync();
+    }
+  }, [loaded]);
+
+  if (!loaded) {
+    return null;
+  }
+
+  return (
+    <PersistQueryClientProvider
+      persistOptions={{ persister: asyncStoragePersister }}
+      client={queryClient}
+    >
+      <ThemeProvider value={colorScheme === "dark" ? DarkTheme : DefaultTheme}>
+        <Stack>
+          <Stack.Screen
+            name="index"
+            options={{
+              headerShown: false,
+            }}
+          />
+          <Stack.Screen
+            name="transactions"
+            options={{
+              presentation: "modal",
+              headerTitle: "Transactions",
+            }}
+          />
+          <Stack.Screen name="+not-found" />
+        </Stack>
+        <StatusBar style="auto" />
+      </ThemeProvider>
+    </PersistQueryClientProvider>
+  );
+}

react-native/app/index.tsx

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+import { useCallback } from "react";
+import ScreenWrapper from "@/components/shared/ScreenWrapper";
+import { RefreshControl, ScrollView, View } from "react-native";
+import ProductsCarousel from "@/components/ProductsCarousel";
+import Summary from "@/components/shared/Summary";
+import RecentTransaction from "@/components/RecentTransactions";
+
+import { useTransactions } from "@/hooks/useTransactions";
+import { useProducts } from "@/hooks/useProducts";
+
+export default function HomeRoute() {
+  const {
+    refetch: refetchTransactions,
+    isRefetching: isRefetchingTransactions,
+  } = useTransactions();
+  const { refetch: refetchProducts, isRefetching: isRefetchingProducts } =
+    useProducts();
+
+  const isRefreshing = isRefetchingTransactions || isRefetchingProducts;
+
+  const handleRefresh = useCallback(async () => {
+    await Promise.all([refetchTransactions(), refetchProducts()]);
+  }, [refetchTransactions, refetchProducts]);
+
+  return (
+    <ScreenWrapper>
+      <View className="p-4">
+        <ProductsCarousel />
+      </View>
+      <ScrollView
+        className="flex-1"
+        refreshControl={
+          <RefreshControl refreshing={isRefreshing} onRefresh={handleRefresh} />
+        }
+        contentContainerClassName="p-4 flex-1 gap-6 dark:bg-gray-900 text-white bg-gray-100 text-black"
+      >
+        <View className="gap-6 flex-1 mt-10">
+          <Summary />
+          <RecentTransaction />
+        </View>
+      </ScrollView>
+    </ScreenWrapper>
+  );
+}

react-native/app/transactions.tsx

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+import React from "react";
+import ScreenWrapper from "@/components/shared/ScreenWrapper";
+import { View } from "react-native";
+import Summary from "@/components/shared/Summary";
+import RecentTransactions from "@/components/RecentTransactions";
+
+export default function TransactionsScreen() {
+  return (
+    <ScreenWrapper>
+      <View className="flex-1 p-4">
+        <View className="gap-6 flex-1">
+          <Summary expandSummary />
+          <RecentTransactions showFull />
+        </View>
+      </View>
+    </ScreenWrapper>
+  );
+}

react-native/babel.config.js

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+module.exports = function (api) {
+  api.cache(true);
+  return {
+    presets: [
+      ["babel-preset-expo", { jsxImportSource: "nativewind" }],
+      "nativewind/babel",
+    ],
+  };
+};