crappy message history load

app/package.json

@@ -1,42 +1,45 @@
 {
-  "name": "chat",
-  "version": "0.1.0",
-  "private": true,
-  "dependencies": {
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "react-scripts": "^5.0.1",
-    "react-string-replace": "^1.1.0",
-    "socket.io-client": "^4.5.2",
-    "uuid": "^9.0.0"
-  },
-  "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
-  },
-  "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
-  },
-  "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 1 chrome version",
-      "last 1 firefox version",
-      "last 1 safari version"
-    ]
-  },
-  "devDependencies": {
-    "autoprefixer": "^10.4.8",
-    "postcss": "^8.4.16",
-    "tailwindcss": "^3.1.8"
-  }
+	"name": "chat",
+	"version": "0.1.0",
+	"private": true,
+	"dependencies": {
+		"react": "^18.2.0",
+		"react-dom": "^18.2.0",
+		"react-scripts": "^5.0.1",
+		"react-string-replace": "^1.1.0",
+		"socket.io-client": "^4.5.2",
+		"uuid": "^9.0.0"
+	},
+	"scripts": {
+		"start": "react-scripts start",
+		"build": "react-scripts build",
+		"test": "react-scripts test",
+		"eject": "react-scripts eject"
+	},
+	"eslintConfig": {
+		"extends": [
+			"react-app",
+			"react-app/jest"
+		],
+		"rules": {
+			"react/jsx-no-target-blank": "off"
+		}
+	},
+	"browserslist": {
+		"production": [
+			">0.2%",
+			"not dead",
+			"not op_mini all"
+		],
+		"development": [
+			"last 1 chrome version",
+			"last 1 firefox version",
+			"last 1 safari version"
+		]
+	},
+	"devDependencies": {
+		"autoprefixer": "^10.4.8",
+		"postcss": "^8.4.16",
+		"tailwindcss": "^3.1.8"
+	}
 }

app/src/App.js

@@ -76,7 +76,7 @@ function Chat({user, setUser}) {
 
 	return (
 		<div className="Chat h-full flex flex-col">
-			<MessageList messages={messages} user={user} updateUser={updateUser} />
+			<MessageList messages={messages} setMessages={setMessages} />
 			<UserList users={users} updateUser={updateUser} user={user} socket={socket} />
 			<ChatInput sendMessage={sendMessage} user={user} updateUser={updateUser} setSettingsModalOpen={setSettingsModalOpen} socket={socket} />
 			<SettingsModal open={settingsModalOpen} setOpen={setSettingsModalOpen} user={user} updateUser={updateUser} />
@@ -90,78 +90,64 @@ function Chat({user, setUser}) {
 
 
 
-function MessageList({messages, user, updateUser}) {
-
-	var [scrollLock, setScrollLock] = useState(true);
+function MessageList({messages, setMessages}) {
+	var [atBottom, setAtBottom] = useState(true);
+	var [atTop, setAtTop] = useState(false);
 	var endRef = useRef();
+
 	function onScroll(event) {
 		var { scrollTop, scrollHeight, clientHeight } = event.target;
-		setScrollLock(scrollHeight - (scrollTop + clientHeight) < 32);
+		setAtBottom(scrollHeight - (scrollTop + clientHeight) < 32);
+		setAtTop(scrollTop < 32);
 	};
-	function scrollToBottom() {
-		endRef.current?.scrollIntoView();
-	}
-	useEffect(() => {
-		if (scrollLock) scrollToBottom();
-	});
 
-	var observer = new ResizeObserver(entries => {
-		if (scrollLock) scrollToBottom();
+	var scrollToBottom = () => endRef.current?.scrollIntoView();
+	useEffect(() => {
+		if (atBottom) scrollToBottom();
 	});
+	var observer = new ResizeObserver(() => atBottom && scrollToBottom());
+
+	useEffect(()=>{
+		if (atTop) loadOlderMessages();
+	}, [atTop]);
+
+	async function loadOlderMessages() {
+		var olderMessages = await fetch(BASE_URL+"/messages?before="+messages[0].timestamp).then(res => res.json());
+		console.debug("loadOlderMessages", olderMessages);
+		setMessages(messages => [...olderMessages, ...messages]);
+	}
 
 	return <ul className="p-4 w-full flex-1 overflow-y-auto break-words" onScroll={onScroll} onLoad={e => observer.observe(e.target)}>
-		{messages.map(message => {
-
-			function onAuthorClick(event) {
-				if (message.user.uuid !== user.uuid) return;
-				event.preventDefault();
-				var website = prompt("Set website URL", user.website);
-				if (website) updateUser({website});
-			}
-
-			if (message.user)
-			// eslint-disable-next-line react/jsx-no-target-blank
-			var prefix = <b>{message.user.website ? <a
-				href={message.user.website}
-				target="_blank"
-				rel="noopener"
-				//onClick={onAuthorClick}
-				className={message.user.website && "hover:underline"}
-			>{message.user.name}</a> : message.user.name}: </b>
-
-			var content = <span
-				className={(message.user ? '' : " font-bold")}
-				style={{color: message.color || message.user?.color}}
-				title={new Date(message.timestamp).toLocaleString()}
-			>{processMessageContent(message.content)}</span>
-
-			if (message.file) {
-				let url = BASE_URL + `/file/${message._id}/${message.file.name}`;
-				let embed =
-					message.file.type?.startsWith("image") ?
-						<img src={url} alt={message.file.name} className="max-h-32 inline-block align-top border" />
-					: message.file.type?.startsWith("video") ?
-						<video className='max-h-64 inline-block align-top border' controls>
-							<source src={url} type={message.file.type} />
-						</video>
-					: message.file.type?.startsWith("audio") ?
-						<audio className='max-h-64 inline-block align-top' controls>
-							<source src={url} type={message.file.type} />
-						</audio>
-					: <span>{message.file.name}</span>
-				// eslint-disable-next-line react/jsx-no-target-blank
-				var file = <a href={url} target="_blank" rel="noopener" style={{color:"revert",textDecoration:"revert"}}>{embed}</a>;
-			}
-
-			return <li key={message._id}>
-				{prefix} {content} {file}
-			</li>
-
-		})}
+		{messages.map(message => <Message message={message} key={message._id} />)}
 		<div ref={endRef}></div>
 	</ul>
 }
 
+function Message({message}) {
+	if (message.user) {
+		var prefix = <b>{message.user.website ? <a href={message.user.website} target="_blank" rel="noopener" className={message.user.website && "hover:underline"}>{message.user.name}</a> : message.user.name}: </b>
+	}
+	var content = <span className={(message.user ? '' : " font-bold")} style={{color: message.color || message.user?.color}} title={new Date(message.timestamp).toLocaleString()}>{processMessageContent(message.content)}</span>
+
+	if (message.file) {
+		let url = BASE_URL + `/file/${message._id}/${message.file.name}`;
+		var file =
+			message.file.type?.startsWith("image") ?
+				<a href={url} target="_blank" rel="noopener" style={{color:"revert",textDecoration:"revert"}}><img src={url} alt={message.file.name} className="max-h-32 inline-block align-top border" /></a>
+			: message.file.type?.startsWith("video") ?
+				<video className='max-h-64 inline-block align-top border' controls>
+					<source src={url} type={message.file.type} />
+				</video>
+			: message.file.type?.startsWith("audio") ?
+				<audio className='max-h-64 inline-block align-top' controls>
+					<source src={url} type={message.file.type} />
+				</audio>
+			: <a href={url} target="_blank" rel="noopener" style={{color:"revert",textDecoration:"revert"}}>{message.file.name}</a>
+	}
+
+	return <li>{prefix} {content} {file}</li>
+}
+
 
 
 
@@ -244,8 +230,10 @@ function EmojiPicker({open, setOpen, setChatInputContent}) {
 		setChatInputContent(content => `${content} :${event.target.dataset.emoji}:`);
 	};
 	if (open)
-	return <div className='w-64 h-64 rounded border fixed right-6 bottom-16 overflow-auto bg-white dark:bg-black'>
-		{emojis.map(emoji => <img src={BASE_URL+"/emoji/"+emoji} title={`:${emoji}:`} alt={`:${emoji}:`} key={emoji} data-emoji={emoji} className="w-8 h-8 inline-block m-1 cursor-pointer hover:border" onClick={onEmojiClick} />)}
+	return <div className='fixed top-0 left-0 w-full h-full' onClick={e=>setOpen(false)}>
+		<div className='w-[258px] h-64 rounded border fixed right-6 bottom-16 overflow-auto bg-white dark:bg-black p-2' onClick={e=>e.stopPropagation()}>
+			{emojis.map(emoji => <img src={BASE_URL+"/emoji/"+emoji} title={`:${emoji}:`} alt={`:${emoji}:`} key={emoji} data-emoji={emoji} className="w-10 h-10 inline-block p-0.5 cursor-pointer border border-transparent hover:border-gray-600" onClick={onEmojiClick} />)}
+		</div>
 	</div>
 }
 
@@ -343,7 +331,6 @@ function processMessageContent(content) {
 	if (!content) return;
 	// hyperlinks
 	content = reactStringReplace(content, /(https?:\/\/\S+)/gi, link => 
-		// eslint-disable-next-line react/jsx-no-target-blank
 		<a href={link} target="_blank" rel="noopener" style={{color: "revert", textDecoration: "revert"}}>{link}</a>
 	)
 	// emoji

server/index.js

@@ -24,6 +24,12 @@ app.use((req, res, next) => {
 	res.header("Access-Control-Allow-Methods", "*");
 	next();
 });
+app.get("/messages", (req, res, next) => {
+	var query = req.query.before ? {timestamp: {$lt: new Date(req.query.before)}} : {};
+	messages.find(query).project({"file.data": 0, "user.ip": 0}).sort({timestamp: -1}).limit(100).toArray().then(messages => {
+		res.send(messages.reverse());
+	}).catch(e => next(e));
+});
 app.get("/file/:message_id/:filename", async (req, res, next) => {
 	try {
 		var doc = await messages.findOne({_id: new ObjectId(req.params.message_id)}, {file:1});
@@ -107,7 +113,7 @@ dbclient.connect().then(async () => {
 					type: m.file.type?.substring(0,64)
 				} : undefined
 			}));
-			var history = await messages.find().project({"file.data": 0}).sort({timestamp: -1}).limit(100).toArray();
+			var history = await messages.find().project({"file.data": 0, "user.ip": 0}).sort({timestamp: -1}).limit(100).toArray();
 			history = history.reverse();
 			socket.emit("messages", history);
 			socket.on("type", () => {