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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,88 +1,59 @@ | ||
| import React, { useEffect, useState } from 'react'; | ||
| import { View, Text, FlatList, TextInput, TouchableOpacity } from 'react-native'; | ||
| import { API, graphqlOperation, Auth } from 'aws-amplify'; | ||
| // import { listMessages } from './src/graphql/queries'; | ||
| // import { onCreateMessage } from './src/graphql/subscriptions'; | ||
| // import { createMessage } from './src/graphql/mutations'; | ||
| import { listMessages } from '../../../src/graphql/queries'; | ||
| import { onCreateMessage } from '../../../src/graphql/subscriptions'; | ||
| import { createMessage } from '../../../src/graphql/mutations'; | ||
| import React,{useState,useEffect} from 'react'; | ||
| import { StyleSheet, Text, View } from 'react-native'; | ||
| import { createStackNavigator } from '@react-navigation/native'; | ||
| import SocketIOClient from 'socket.io-client'; | ||
| import { TextInput,Button } from 'react-native'; | ||
| const socket = SocketIOClient('http://localhost:3000'); | ||
|
|
||
| socket.on('connect', () => { | ||
| console.log('Connected to server'); | ||
| }); | ||
|
|
||
| socket.on('disconnect', () => { | ||
| console.log('Disconnected from server'); | ||
| }); | ||
|
|
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| socket.on('chat message', (msg) => { | ||
| console.log('New message:', msg); | ||
| }); | ||
|
|
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| const sendMessage = (msg) => { | ||
| socket.emit('chat message', msg); | ||
| }; | ||
|
|
||
| const Message = () => { | ||
| const ChatScreen = () => { | ||
| const [messages, setMessages] = useState([]); | ||
| const [newMessage, setNewMessage] = useState(''); | ||
| const [message, setMessage] = useState(''); | ||
|
|
||
| useEffect(() => { | ||
| fetchMessages(); // Fetch existing messages | ||
| subscribeToNewMessages(); // Subscribe to real-time message updates | ||
| }, []); | ||
|
|
||
| const fetchMessages = async () => { | ||
| try { | ||
| const messageData = await API.graphql(graphqlOperation(listMessages)); | ||
| setMessages(messageData.data.listMessages.items); | ||
| } catch (error) { | ||
| console.error('Error fetching messages:', error); | ||
| } | ||
| }; | ||
|
|
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| const subscribeToNewMessages = async () => { | ||
| const subscription = API.graphql(graphqlOperation(onCreateMessage)).subscribe({ | ||
| next: (eventData) => { | ||
| const newMessage = eventData.value.data.onCreateMessage; | ||
| setMessages((prevMessages) => [...prevMessages, newMessage]); | ||
| }, | ||
| error: (error) => { | ||
| console.error('Error subscribing to new messages:', error); | ||
| }, | ||
| socket.on('chat message', (msg) => { | ||
| setMessages([...messages, msg]); | ||
| }); | ||
| }, [messages]); | ||
|
|
||
| return () => subscription.unsubscribe(); // Cleanup the subscription when component unmounts | ||
| }; | ||
|
|
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| const handleSendMessage = async () => { | ||
| if (!newMessage) return; | ||
|
|
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| const message = { | ||
| content: newMessage, | ||
| createdAt: new Date().toISOString(), | ||
| updatedAt: new Date().toISOString(), | ||
| }; | ||
|
|
||
| try { | ||
| await API.graphql(graphqlOperation(createMessage, { input: message })); | ||
| setNewMessage(''); | ||
| } catch (error) { | ||
| console.error('Error sending message:', error); | ||
| } | ||
| const handleSendMessage = () => { | ||
| sendMessage(message); | ||
| setMessage(''); | ||
| }; | ||
|
|
||
| const renderMessageItem = ({ item }) => ( | ||
| <View> | ||
| <Text>{item.content}</Text> | ||
| </View> | ||
| ); | ||
|
|
||
| return ( | ||
| <View> | ||
| <FlatList | ||
| data={messages} | ||
| renderItem={renderMessageItem} | ||
| keyExtractor={(item) => item.id} | ||
| /> | ||
| <Text>Chat Screen</Text> | ||
| <View> | ||
| <TextInput | ||
| style={{ borderWidth: 1, borderColor: 'gray', padding: 10 }} | ||
| placeholder="Type your message" | ||
| value={newMessage} | ||
| onChangeText={(text) => setNewMessage(text)} | ||
| /> | ||
| <TouchableOpacity onPress={handleSendMessage} style={{ backgroundColor: 'blue', padding: 10 }}> | ||
| <Text style={{ color: 'white' }}>Send</Text> | ||
| </TouchableOpacity> | ||
| {messages.map((msg, index) => ( | ||
| <Text key={index}>{msg}</Text> | ||
| ))} | ||
| </View> | ||
| <TextInput | ||
| value={message} | ||
| onChangeText={setMessage} | ||
| /> | ||
| <Button | ||
| title="Send" | ||
| onPress={handleSendMessage} | ||
| /> | ||
| </View> | ||
| ); | ||
| }; | ||
|
|
||
| export default Message; | ||
| export default ChatScreen; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| const express = require('express'); | ||
| const app = express(); | ||
| const server = require('http').Server(app); | ||
| const io = require('socket.io')(server); | ||
|
|
||
| app.get('/', function(req, res){ | ||
| res.sendFile(__dirname + '/index.html'); | ||
| }); | ||
|
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| io.on('connection', function(socket){ | ||
| console.log('a user connected'); | ||
| socket.on('chat message', function(msg){ | ||
| console.log('message: ' + msg); | ||
| io.emit('chat message', msg); | ||
| }); | ||
| }); | ||
|
|
||
| server.listen(3000, function(){ | ||
| console.log('listening on *:3000'); | ||
| }); |
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