expo package

frontend/.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

frontend/README.md

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+# Welcome to your Expo app 👋
+
+This is an [Expo](https://expo.dev) project created with [`create-expo-app`](https://www.npmjs.com/package/create-expo-app).
+
+## Get started
+
+1. Install dependencies
+
+   ```bash
+   npm install
+   ```
+
+2. Start the app
+
+   ```bash
+    npx expo start
+   ```
+
+In the output, you'll find options to open the app in a
+
+- [development build](https://docs.expo.dev/develop/development-builds/introduction/)
+- [Android emulator](https://docs.expo.dev/workflow/android-studio-emulator/)
+- [iOS simulator](https://docs.expo.dev/workflow/ios-simulator/)
+- [Expo Go](https://expo.dev/go), a limited sandbox for trying out app development with Expo
+
+You can start developing by editing the files inside the **app** directory. This project uses [file-based routing](https://docs.expo.dev/router/introduction).
+
+## Get a fresh project
+
+When you're ready, run:
+
+```bash
+npm run reset-project
+```
+
+This command will move the starter code to the **app-example** directory and create a blank **app** directory where you can start developing.
+
+## Learn more
+
+To learn more about developing your project with Expo, look at the following resources:
+
+- [Expo documentation](https://docs.expo.dev/): Learn fundamentals, or go into advanced topics with our [guides](https://docs.expo.dev/guides).
+- [Learn Expo tutorial](https://docs.expo.dev/tutorial/introduction/): Follow a step-by-step tutorial where you'll create a project that runs on Android, iOS, and the web.
+
+## Join the community
+
+Join our community of developers creating universal apps.
+
+- [Expo on GitHub](https://github.com/expo/expo): View our open source platform and contribute.
+- [Discord community](https://chat.expo.dev): Chat with Expo users and ask questions.

frontend/api.js

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+import axios from 'axios';
+
+// Replace with your backend URL or IP address (Ensure the backend is running)
+const API_URL = 'http://localhost:3001';
+
+export const fetchData = async () => {
+    try {
+        const response = await axios.get(`${API_URL}/your-endpoint`);
+        return response.data;
+    } catch (error) {
+        console.error("Error fetching data:", error);
+        return null;
+    }
+};
+
+export const sendData = async (data) => {
+    try {
+        const response = await axios.post(`${API_URL}/your-endpoint`, data);
+        return response.data;
+    } catch (error) {
+        console.error("Error sending data:", error);
+        return null;
+    }
+};

frontend/app.json

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+{
+  "expo": {
+    "name": "soundwave",
+    "slug": "soundwave",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/images/icon.png",
+    "scheme": "myapp",
+    "userInterfaceStyle": "automatic",
+    "newArchEnabled": true,
+    "ios": {
+      "supportsTablet": true
+    },
+    "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
+    }
+  }
+}

frontend/app/(tabs)/_layout.tsx

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+import { Tabs } from 'expo-router';
+//import React from 'react';
+import React, { useEffect } from 'react';
+import { Platform } from 'react-native';
+import { useFonts } from 'expo-font';
+import * as SplashScreen from 'expo-splash-screen';
+
+import { HapticTab } from '@/components/HapticTab';
+import { IconSymbol } from '@/components/ui/IconSymbol';
+import TabBarBackground from '@/components/ui/TabBarBackground';
+import { Colors } from '@/constants/Colors';
+import { useColorScheme } from '@/hooks/useColorScheme';
+
+SplashScreen.preventAutoHideAsync();
+
+export default function TabLayout() {
+  const colorScheme = useColorScheme();
+
+  // Load fonts
+  const [fontsLoaded] = useFonts({
+    'CustomFont': require('@/assets/fonts/Afacad-VariableFont_wght.ttf'),
+    //'CustomFont-Bold': require('@/assets/fonts/CustomFont-Bold.ttf'),
+  });
+
+  // Hide splash screen when fonts are loaded
+  useEffect(() => {
+    if (fontsLoaded) {
+      SplashScreen.hideAsync();
+    }
+  }, [fontsLoaded]);
+
+  // Prevent rendering until fonts are loaded
+  if (!fontsLoaded) {
+    return null;
+  }
+
+  return (
+    <Tabs
+      screenOptions={{
+        tabBarActiveTintColor: Colors[colorScheme ?? 'light'].tint,
+        headerShown: false,
+        tabBarButton: HapticTab,
+        tabBarBackground: TabBarBackground,
+        tabBarStyle: Platform.select({
+          ios: {
+            // Use a transparent background on iOS to show the blur effect
+            position: 'absolute',
+          },
+          default: {},
+        }),
+      }}>
+      <Tabs.Screen
+        name="index"
+        options={{
+          title: 'Home',
+          tabBarIcon: ({ color }: { color: string }) => (
+            <IconSymbol size={28} name="house.fill" color={color} />
+          ),
+
+        }}
+      />
+      <Tabs.Screen
+        name="explore"
+        options={{
+          title: 'Explore',
+          tabBarIcon: ({ color }: { color: string }) => (
+            <IconSymbol size={28} name="house.fill" color={color} />
+          ),
+
+        }}
+      />
+      <Tabs.Screen
+        name="newpost"
+        options={{
+          title: 'newpost',
+          tabBarIcon: ({ color }: { color: string }) => (
+            <IconSymbol size={28} name="paperplane.fill" color={color} />
+          ),
+
+        }}
+      />
+    </Tabs>
+  );
+}

frontend/app/(tabs)/explore.tsx

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+import React, { useEffect, useState } from 'react';
+import { StyleSheet, Image, Platform, View, Text } from 'react-native';
+import { Collapsible } from '@/components/Collapsible';
+import { ExternalLink } from '@/components/ExternalLink';
+import ParallaxScrollView from '@/components/ParallaxScrollView';
+import { ThemedText } from '@/components/ThemedText';
+import { ThemedView } from '@/components/ThemedView';
+import { IconSymbol } from '@/components/ui/IconSymbol';
+
+// Import API functions
+import { fetchData } from '@/api'; // Ensure this path is correct
+
+export default function TabTwoScreen() {
+  const [backendData, setBackendData] = useState(null);
+
+  // Fetch data when component mounts
+  useEffect(() => {
+    loadData();
+  }, []);
+
+  const loadData = async () => {
+    try {
+      const result = await fetchData(); // Calls API function
+      setBackendData(result);
+    } catch (error) {
+      console.error('Error fetching data:', error);
+    }
+  };
+
+  return (
+    <ParallaxScrollView
+      headerBackgroundColor={{ light: '#D0D0D0', dark: '#353636' }}
+      headerImage={
+        <IconSymbol
+          size={310}
+          color="#808080"
+          name="chevron.left.forwardslash.chevron.right"
+          style={styles.headerImage}
+        />
+      }>
+      <ThemedView style={styles.titleContainer}>
+        <ThemedText type="title">Explore</ThemedText>
+      </ThemedView>
+
+      <ThemedText>Data from Backend:</ThemedText>
+      <View style={styles.dataContainer}>
+        {backendData ? (
+          <Text>{JSON.stringify(backendData)}</Text>
+        ) : (
+          <Text>Loading...</Text>
+        )}
+      </View>
+
+      <Collapsible title="File-based routing">
+        <ThemedText>
+          This app has two screens:{' '}
+          <ThemedText type="defaultSemiBold">app/(tabs)/index.tsx</ThemedText> and{' '}
+          <ThemedText type="defaultSemiBold">app/(tabs)/explore.tsx</ThemedText>
+        </ThemedText>
+      </Collapsible>
+    </ParallaxScrollView>
+  );
+}
+
+const styles = StyleSheet.create({
+  headerImage: {
+    color: '#808080',
+    bottom: -90,
+    left: -35,
+    position: 'absolute',
+  },
+  titleContainer: {
+    flexDirection: 'row',
+    gap: 8,
+  },
+  dataContainer: {
+    padding: 10,
+    borderWidth: 1,
+    borderColor: '#ccc',
+    borderRadius: 5,
+    marginVertical: 10,
+  },
+});
+