new message list and WIP read states

package.json

@@ -48,6 +48,7 @@
 		"react": "^18.2.0",
 		"react-advanced-cropper": "^0.19.6",
 		"react-colorful": "^5.6.1",
+		"react-content-loader": "^7.0.2",
 		"react-device-detect": "^2.2.3",
 		"react-dom": "^18.2.0",
 		"react-fps-stats": "^0.3.1",

pnpm-lock.yaml

@@ -137,6 +137,9 @@ dependencies:
   react-colorful:
     specifier: ^5.6.1
     version: 5.6.1(react-dom@18.2.0)(react@18.2.0)
+  react-content-loader:
+    specifier: ^7.0.2
+    version: 7.0.2(react@18.2.0)
   react-device-detect:
     specifier: ^2.2.3
     version: 2.2.3(react-dom@18.2.0)(react@18.2.0)
@@ -12956,6 +12959,15 @@ packages:
       react-dom: 18.2.0(react@18.2.0)
     dev: false
 
+  /react-content-loader@7.0.2(react@18.2.0):
+    resolution: {integrity: sha512-773S98JTyC8VB2nu7LXUhpHx8tZMieGxMcx3qTe7IkohT6Br7d9AXnIXs/wQ6IhlUdKQcw6JLKk1QKigYCWDRA==}
+    engines: {node: '>=10'}
+    peerDependencies:
+      react: '>=16.0.0'
+    dependencies:
+      react: 18.2.0
+    dev: false
+
   /react-dev-utils@12.0.1(eslint@8.57.0)(typescript@5.4.5)(webpack@5.90.3):
     resolution: {integrity: sha512-84Ivxmr17KjUupyqzFode6xKhjwuEJDROWKJy/BthkL7Wn6NJ8h4WE6k/exAv6ImS+0oZLRRW5j/aINMHyeGeQ==}
     engines: {node: '>=14'}

src/components/ChannelList/ChannelListItem.tsx

@@ -1,3 +1,4 @@
+import { observer } from "mobx-react-lite";
 import React, { useContext, useEffect } from "react";
 import { useNavigate } from "react-router-dom";
 import styled from "styled-components";
@@ -7,6 +8,7 @@ import { useAppStore } from "../../stores/AppStore";
 import Channel from "../../stores/objects/Channel";
 import { Permissions } from "../../utils/Permissions";
 import Icon from "../Icon";
+import SidebarPill from "../SidebarPill";
 import Floating from "../floating/Floating";
 import FloatingTrigger from "../floating/FloatingTrigger";
 
@@ -88,6 +90,7 @@ function ChannelListItem({ channel, isCategory, active }: Props) {
 						alignItems: "center",
 					}}
 				>
+					<SidebarPill type={channel.hasUnread() ? "unread" : "none"} />
 					{channel.channelIcon && !isCategory && (
 						<Icon
 							icon={channel.channelIcon}
@@ -163,4 +166,4 @@ function ChannelListItem({ channel, isCategory, active }: Props) {
 	);
 }
 
-export default ChannelListItem;
+export default observer(ChannelListItem);

src/components/SidebarPill.tsx

@@ -5,7 +5,7 @@ export type PillType = "none" | "unread" | "hover" | "active";
 
 const Wrapper = styled(Container)`
 	position: absolute;
-	top: 0;
+	// top: 0;
 	left: 0;
 	width: 8px;
 	height: 48px;

src/components/SkeletonLoader.tsx

@@ -0,0 +1,27 @@
+function SkeletonLoader() {
+	return (
+		<svg
+			role="img"
+			width="560"
+			height="66"
+			aria-labelledby="loading-aria"
+			viewBox="0 0 560 66"
+			preserveAspectRatio="none"
+			fill="#121212"
+		>
+			<title id="loading-aria">Loading...</title>
+			<rect x="0" y="0" width="100%" height="100%" clip-path="url(#clip-path)"></rect>
+			<defs>
+				<clipPath id="clip-path">
+					<circle cx="32" cy="18" r="16" />
+					<rect x="60" y="10" rx="4" ry="4" width="90" height="7" />
+					<rect x="160" y="10" rx="4" ry="4" width="110" height="7" />
+					<rect x="60" y="31" rx="3" ry="3" width="400" height="6" />
+					<rect x="60" y="42" rx="3" ry="3" width="270" height="6" />
+				</clipPath>
+			</defs>
+		</svg>
+	);
+}
+
+export default SkeletonLoader;

src/components/messaging/Chat.tsx

@@ -54,9 +54,12 @@ interface Props2 {
 }
 
 function ChatContent({ channel, guild }: Props2) {
+	const app = useAppStore();
+	const readstate = app.readStateStore.get(channel.id);
+
 	return (
 		<Container>
-			<MessageList guild={guild} channel={channel} />
+			<MessageList guild={guild} channel={channel} before={readstate?.lastMessageId} />
 			<MessageInput channel={channel} guild={guild} />
 			<TypingIndicator channel={channel} />
 		</Container>

src/components/messaging/EmbedMedia.tsx

@@ -70,7 +70,7 @@ function EmbedMedia({ embed, width, height, thumbnail }: Props) {
 		height = newHeight;
 	}
 
-	console.log(`Original size: ${originalWidth}x${originalHeight} - Scaled size: ${width}x${height}`);
+	// console.log(`Original size: ${originalWidth}x${originalHeight} - Scaled size: ${width}x${height}`);
 
 	switch (embed.provider?.name) {
 		case "YouTube": {

src/components/messaging/MessageGroup.tsx

@@ -18,7 +18,7 @@ function MessageGroup({ group }: Props) {
 		<>
 			{messages.map((message, index) => {
 				if (message.type === MessageType.Default || message.type === MessageType.Reply) {
-					return <Message key={message.id} message={message} header={index === messages.length - 1} />;
+					return <Message key={message.id} message={message} header={index === 0} />;
 				} else return <SystemMessage key={message.id} message={message} />;
 			})}
 		</>

src/components/messaging/MessageList.tsx

@@ -1,6 +1,5 @@
 import { observer } from "mobx-react-lite";
 import React, { useEffect, useRef, useState } from "react";
-import { PulseLoader } from "react-spinners";
 import styled from "styled-components";
 import useResizeObserver from "use-resize-observer";
 import { VList, VListHandle } from "virtua";
@@ -11,6 +10,7 @@ import Channel from "../../stores/objects/Channel";
 import Guild from "../../stores/objects/Guild";
 import { Permissions } from "../../utils/Permissions";
 import { HorizontalDivider } from "../Divider";
+import SkeletonLoader from "../SkeletonLoader.tsx";
 import MessageGroup from "./MessageGroup";
 
 export const MessageAreaWidthContext = React.createContext(0);
@@ -43,18 +43,35 @@ function MessageList({ guild, channel, before }: Props) {
 	const logger = useLogger("MessageList.tsx");
 	const [hasMore, setHasMore] = useState(true);
 	const [canView, setCanView] = useState(false);
-	const [loading, setLoading] = useState(false);
+	const [loading, setLoading] = useState(true);
 	const messageGroups = channel.messages.groups;
 	const wrapperRef = useRef<HTMLDivElement>(null);
 	const { width } = useResizeObserver<HTMLDivElement>({ ref: wrapperRef });
 	const ref = useRef<VListHandle>(null);
 
 	useEffect(() => {
-		ref.current?.scrollToIndex(
-			messageGroups.reduce((p, c) => p + c.messages.length, 0) +
-				1 /* +1 to account for the spacer that adds some margin to the bottom */,
-		);
-	}, [messageGroups]);
+		// if (before) {
+		// 	// find message group containing the message
+		// 	const group = messageGroups.find((x) => x.messages.some((y) => y.id === before));
+		// 	const index = group
+		// 		? messageGroups.indexOf(group) +
+		// 		  (hasMore
+		// 				? 10
+		// 				: 0) /** +10 to account for the "skeleton" divs used to add some padding for scrolling */
+		// 		: -1;
+		// 	if (index !== -1) {
+		// 		ref.current?.scrollToIndex(index);
+
+		// 		return;
+		// 	}
+		// }
+
+		// this is for switching to a channel with cached messages, it ensures that we correctly set hasMore to false if there are messages but its less than 50
+		if (channel.messages.count > 0 && channel.messages.count < 50) setHasMore(false);
+
+		const hasSkeleton = hasMore || loading;
+		ref.current?.scrollToIndex(channel.messages.count + (hasSkeleton ? 30 : 0));
+	}, [messageGroups, hasMore, loading]);
 
 	const fetchMore = React.useCallback(() => {
 		setLoading(true);
@@ -76,11 +93,9 @@ function MessageList({ guild, channel, before }: Props) {
 		const before = lastGroup.messages[0].id;
 		logger.debug(`Fetching 50 messages before ${before} for channel ${channel.id}`);
 		channel.getMessages(app, false, 50, before).then((r) => {
-			if (r < 50) {
-				setHasMore(false);
-			}
-		});
+			if (r < 50) setHasMore(false);
 			setLoading(false);
+		});
 	}, [channel, messageGroups]);
 
 	useEffect(() => {
@@ -94,15 +109,19 @@ function MessageList({ guild, channel, before }: Props) {
 		}
 
 		if (guild && channel && channel.messages.count === 0) {
-			channel.getMessages(app, true, 50, before).then((r) => {
-				if (r < 50) {
-					setHasMore(false);
-				}
+			logger.debug(`Fetching 50 messages for channel ${channel.id}`);
+			channel.getMessages(app, true).then((r) => {
+				if (r < 50) setHasMore(false);
+
+				setLoading(false);
 			});
+		} else if (channel.messages.count !== 0) {
+			setLoading(false);
 		}
 
 		return () => {
 			logger.debug("MessageList unmounted");
+			setLoading(true);
 			setHasMore(true);
 			setCanView(false);
 		};
@@ -126,7 +145,12 @@ function MessageList({ guild, channel, before }: Props) {
 						}}
 						reverse
 					>
-						{((messageGroups.length === 0 && !loading) || (!loading && !hasMore)) && (
+						{Array.from({
+							length: hasMore || loading ? 30 : 0,
+						}).map((_, i) => (
+							<SkeletonLoader />
+						))}
+						{!loading && !hasMore && (
 							<EndMessageContainer>
 								<h1 style={{ fontWeight: 700, margin: "8px 0" }}>Welcome to #{channel.name}!</h1>
 								<p style={{ color: "var(--text-secondary)" }}>
@@ -135,17 +159,6 @@ function MessageList({ guild, channel, before }: Props) {
 								<HorizontalDivider />
 							</EndMessageContainer>
 						)}
-						{loading && (
-							<PulseLoader
-								style={{
-									display: "flex",
-									justifyContent: "center",
-									alignContent: "center",
-									margin: 30,
-								}}
-								color="var(--primary)"
-							/>
-						)}
 						{messageGroups.map((group, index) => renderGroup(group))}
 						<Spacer />
 					</VList>

src/stores/AppStore.ts

@@ -13,6 +13,7 @@ import GuildStore from "./GuildStore";
 import MessageQueue from "./MessageQueue";
 import PresenceStore from "./PresenceStore";
 import PrivateChannelStore from "./PrivateChannelStore";
+import ReadStateStore from "./ReadStateStore";
 import RoleStore from "./RoleStore";
 import ThemeStore from "./ThemeStore";
 import UpdaterStore from "./UpdaterStore";
@@ -47,6 +48,7 @@ export default class AppStore {
 	@observable rest = new REST(this);
 	@observable experiments = new ExperimentsStore();
 	@observable presences = new PresenceStore(this);
+	@observable readStateStore = new ReadStateStore(this);
 	@observable queue = new MessageQueue(this);
 	@observable updaterStore: UpdaterStore | null = null;
 

src/stores/GatewayConnectionStore.ts

@@ -469,7 +469,7 @@ export default class GatewayConnectionStore {
 	 */
 	private onReady = (data: GatewayReadyDispatchData) => {
 		this.logger.info(`[Ready] took ${Date.now() - this.connectionStartTime!}ms`);
-		const { session_id, guilds, users, user, private_channels, sessions } = data;
+		const { session_id, guilds, users, user, private_channels, sessions, read_state } = data;
 		this.sessionId = session_id;
 		this.session = (sessions as GatewaySession[]).find((x) => x.session_id === session_id);
 
@@ -480,8 +480,9 @@ export default class GatewayConnectionStore {
 		if (users) {
 			this.app.users.addAll(users);
 		}
+
 		// TODO: store relationships
-		// TODO: store readstates
+		this.app.readStateStore.addAll(read_state.entries);
 		this.app.privateChannels.addAll(private_channels);
 
 		if (data.merged_members) {

src/stores/MessageStore.ts

@@ -86,7 +86,7 @@ export default class MessageStore {
 
 		const sortedGroups = sortedMessages
 			.slice()
-			.sort((a, b) => a.timestamp.getTime() - b.timestamp.getTime())
+			.sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime())
 			.reduce((groups, message) => {
 				const lastGroup = groups[groups.length - 1];
 				const lastMessage = lastGroup?.messages[lastGroup.messages.length - 1];
@@ -95,7 +95,7 @@ export default class MessageStore {
 					lastMessage.author.id === message.author.id &&
 					lastMessage.type === message.type &&
 					message.type === MessageType.Default &&
-					message.timestamp.getTime() - lastMessage.timestamp.getTime() <= 10 * 60 * 1000
+					lastMessage.timestamp.getTime() - message.timestamp.getTime() <= 10 * 60 * 1000
 				) {
 					// add to last group
 					lastGroup.messages.unshift(message);
@@ -107,7 +107,8 @@ export default class MessageStore {
 					});
 				}
 				return groups;
-			}, [] as MessageGroup[]);
+			}, [] as MessageGroup[])
+			.reverse();
 
 		return sortedGroups;
 	}

src/stores/ReadStateStore.ts

@@ -0,0 +1,61 @@
+import type { APIReadState } from "@spacebarchat/spacebar-api-types/v9";
+import { ObservableMap, action, computed, observable } from "mobx";
+import AppStore from "./AppStore";
+import ReadState from "./objects/ReadState";
+
+export default class ReadStateStore {
+	private readonly app: AppStore;
+	@observable readonly readstates = new ObservableMap<string, ReadState>();
+
+	constructor(app: AppStore) {
+		this.app = app;
+	}
+
+	@action
+	add(readstate: APIReadState) {
+		this.readstates.set(readstate.id, new ReadState(this.app, readstate));
+	}
+
+	@action
+	update(readstate: APIReadState) {
+		const existing = this.readstates.get(readstate.id);
+		if (existing) {
+			existing.update(readstate);
+		} else {
+			this.add(readstate);
+		}
+	}
+
+	@action
+	addAll(readstates: APIReadState[]) {
+		readstates.forEach((readstate) => this.add(readstate));
+	}
+
+	/**
+	 * Get a channels readstate
+	 * @param id channel id
+	 * @returns
+	 */
+	get(id: string) {
+		return this.readstates.get(id);
+	}
+
+	@computed
+	get all() {
+		return Array.from(this.readstates.values());
+	}
+
+	@action
+	remove(id: string) {
+		this.readstates.delete(id);
+	}
+
+	@computed
+	get count() {
+		return this.readstates.size;
+	}
+
+	has(id: string) {
+		return this.readstates.has(id);
+	}
+}

src/stores/objects/Channel.ts

@@ -310,4 +310,14 @@ export default class Channel {
 
 		return listId;
 	}
+
+	hasUnread() {
+		const readState = this.app.readStateStore.get(this.id);
+		if (!readState) {
+			// this.logger.warn(`Failed to find readstate for channel ${this.id}`); // this just causes unnecessary spam
+			return false;
+		}
+
+		return readState.lastMessageId !== this.lastMessageId;
+	}
 }

src/stores/objects/ReadState.ts

@@ -0,0 +1,26 @@
+import type { APIReadState } from "@spacebarchat/spacebar-api-types/v9";
+import { action, observable } from "mobx";
+import AppStore from "../AppStore";
+
+export default class ReadState {
+	private readonly app: AppStore;
+
+	id: string;
+	@observable lastMessageId: string;
+	@observable lastPinTimestamp: string | null;
+	@observable mentionCount: number | null;
+
+	constructor(app: AppStore, data: APIReadState) {
+		this.app = app;
+
+		this.id = data.id;
+		this.lastMessageId = data.last_message_id;
+		this.lastPinTimestamp = data.last_pin_timestamp;
+		this.mentionCount = data.mention_count;
+	}
+
+	@action
+	update(role: APIReadState) {
+		Object.assign(this, role);
+	}
+}