gamja/components/app.js

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import * as irc from "/lib/irc.js";
import Client from "/lib/client.js";
import Buffer from "/components/buffer.js";
import BufferList from "/components/buffer-list.js";
import BufferHeader from "/components/buffer-header.js";
import MemberList from "/components/member-list.js";
import Connect from "/components/connect.js";
import Composer from "/components/composer.js";
import ScrollManager from "/components/scroll-manager.js";
import { html, Component, createRef } from "/lib/index.js";
import { SERVER_BUFFER, BufferType, ReceiptType, Status, Unread } from "/state.js";
import commands from "/commands.js";
import { setup as setupKeybindings } from "/keybindings.js";
const CHATHISTORY_PAGE_SIZE = 100;
const CHATHISTORY_MAX_SIZE = 4000;
var messagesCount = 0;
function parseQueryString() {
var query = window.location.search.substring(1);
var params = {};
query.split('&').forEach((s) => {
if (!s) {
return;
}
var pair = s.split('=');
params[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] || "");
});
return params;
}
/* Insert a message in an immutable list of sorted messages. */
function insertMessage(list, msg) {
if (list.length == 0) {
return [msg];
} else if (list[list.length - 1].tags.time <= msg.tags.time) {
return list.concat(msg);
}
var insertBefore = -1;
for (var i = 0; i < list.length; i++) {
var other = list[i];
if (msg.tags.time < other.tags.time) {
insertBefore = i;
break;
}
}
console.assert(insertBefore >= 0, "");
list = [ ...list ];
list.splice(insertBefore, 0, msg);
return list;
}
function debounce(f, delay) {
var timeout = null;
return (...args) => {
clearTimeout(timeout);
timeout = setTimeout(() => {
timeout = null;
f(...args);
}, delay);
};
}
function compareBuffers(a, b) {
if (a.type == BufferType.SERVER) {
return -1;
}
if (b.type == BufferType.SERVER) {
return 1;
}
if (a.name < b.name) {
return -1;
}
if (a.name > b.name) {
return 1;
}
return 0;
}
export default class App extends Component {
client = null;
state = {
connectParams: {
serverURL: null,
serverPass: null,
username: null,
realname: null,
nick: null,
saslPlain: null,
autoconnect: false,
autojoin: [],
},
status: Status.DISCONNECTED,
buffers: new Map(),
activeBuffer: null,
error: null,
};
pendingHistory = Promise.resolve(null);
endOfHistory = new Map();
receipts = new Map();
buffer = createRef();
composer = createRef();
constructor(props) {
super(props);
this.handleConnectSubmit = this.handleConnectSubmit.bind(this);
this.handleBufferListClick = this.handleBufferListClick.bind(this);
this.handleComposerSubmit = this.handleComposerSubmit.bind(this);
this.handleNickClick = this.handleNickClick.bind(this);
this.handleJoinClick = this.handleJoinClick.bind(this);
this.autocomplete = this.autocomplete.bind(this);
this.handleBufferScrollTop = this.handleBufferScrollTop.bind(this);
this.dismissError = this.dismissError.bind(this);
this.saveReceipts = debounce(this.saveReceipts.bind(this), 500);
if (window.localStorage && localStorage.getItem("autoconnect")) {
var connectParams = JSON.parse(localStorage.getItem("autoconnect"));
this.state.connectParams = {
...this.state.connectParams,
...connectParams,
autoconnect: true,
};
} else {
var params = parseQueryString();
var host = window.location.host || "localhost:8080";
var proto = "wss:";
if (window.location.protocol != "https:") {
proto = "ws:";
}
var serverURL;
if (params.server) {
if (params.server.startsWith("/")) {
serverURL = proto + "//" + host + params.server;
} else {
serverURL = params.server;
}
} else {
serverURL = proto + "//" + host + "/socket";
}
this.state.connectParams.serverURL = serverURL;
if (params.channels) {
this.state.connectParams.autojoin = params.channels.split(",");
}
}
if (window.localStorage && localStorage.getItem("receipts")) {
var obj = JSON.parse(localStorage.getItem("receipts"));
this.receipts = new Map(Object.entries(obj));
}
}
dismissError(event) {
event.preventDefault();
this.setState({ error: null });
}
setBufferState(name, updater, callback) {
this.setState((state) => {
var buf = state.buffers.get(name);
if (!buf) {
return;
}
var updated;
if (typeof updater === "function") {
updated = updater(buf, state);
} else {
updated = updater;
}
if (buf === updated || !updated) {
return;
}
updated = { ...buf, ...updated };
var buffers = new Map(state.buffers);
buffers.set(name, updated);
return { buffers };
}, callback);
}
createBuffer(name) {
this.setState((state) => {
if (state.buffers.get(name)) {
return;
}
var type;
if (name == SERVER_BUFFER) {
type = BufferType.SERVER;
} else if (this.isChannel(name)) {
type = BufferType.CHANNEL;
} else {
type = BufferType.NICK;
}
var bufferList = Array.from(state.buffers.values());
bufferList.push({
name,
type,
serverInfo: null, // if server
topic: null, // if channel
members: new Map(), // if channel
who: null, // if nick
offline: false, // if nick
messages: [],
unread: Unread.NONE,
});
bufferList = bufferList.sort(compareBuffers);
var buffers = new Map(bufferList.map((buf) => [buf.name, buf]));
return { buffers };
});
}
switchBuffer(name) {
// TODO: only mark as read if user scrolled at the bottom
this.setBufferState(name, { unread: Unread.NONE });
this.setState({ activeBuffer: name }, () => {
if (this.composer.current) {
this.composer.current.focus();
}
var buf = this.state.buffers.get(name);
if (!buf || buf.messages.length == 0) {
return;
}
var lastMsg = buf.messages[buf.messages.length - 1];
this.setReceipt(name, ReceiptType.READ, lastMsg);
});
}
saveReceipts() {
if (window.localStorage) {
var obj = Object.fromEntries(this.receipts);
localStorage.setItem("receipts", JSON.stringify(obj));
}
}
getReceipt(target, type) {
var receipts = this.receipts.get(target);
if (!receipts) {
return undefined;
}
return receipts[type];
}
hasReceipt(target, type, msg) {
var receipt = this.getReceipt(target, type);
return receipt && msg.tags.time <= receipt.time;
}
setReceipt(target, type, msg) {
var receipt = this.getReceipt(target, type);
if (this.hasReceipt(target, type, msg)) {
return;
}
this.receipts.set(target, {
...this.receipts.get(target),
[type]: { time: msg.tags.time },
});
this.saveReceipts();
}
addMessage(bufName, msg) {
msg.key = messagesCount;
messagesCount++;
if (!msg.tags) {
msg.tags = {};
}
if (!msg.tags.time) {
msg.tags.time = irc.formatDate(new Date());
}
var isDelivered = this.hasReceipt(bufName, ReceiptType.DELIVERED, msg);
var isRead = this.hasReceipt(bufName, ReceiptType.READ, msg);
// TODO: messages coming from infinite scroll shouldn't trigger notifications
var msgUnread = Unread.NONE;
if ((msg.command == "PRIVMSG" || msg.command == "NOTICE") && !isRead) {
var target = msg.params[0];
var text = msg.params[1];
var kind;
if (msg.prefix.name != this.client.nick && irc.isHighlight(text, this.client.nick)) {
msgUnread = Unread.HIGHLIGHT;
kind = "highlight";
} else if (target == this.client.nick) {
msgUnread = Unread.HIGHLIGHT;
kind = "private message";
} else {
msgUnread = Unread.MESSAGE;
}
if (msgUnread == Unread.HIGHLIGHT && window.Notification && Notification.permission === "granted" && !isDelivered) {
var title = "New " + kind + " from " + msg.prefix.name;
if (this.isChannel(target)) {
title += " in " + target;
}
var notif = new Notification(title, {
body: text,
requireInteraction: true,
});
notif.addEventListener("click", () => {
// TODO: scroll to message
this.switchBuffer(target);
});
}
}
if (msg.prefix.name != this.client.nick && (msg.command != "PART" && msg.comand != "QUIT")) {
this.createBuffer(bufName);
}
this.setReceipt(bufName, ReceiptType.DELIVERED, msg);
this.setBufferState(bufName, (buf, state) => {
// TODO: set unread if scrolled up
var unread = buf.unread;
if (state.activeBuffer != buf.name) {
unread = Unread.union(unread, msgUnread);
} else {
this.setReceipt(bufName, ReceiptType.READ, msg);
}
var messages = insertMessage(buf.messages, msg);
return { messages, unread };
});
}
connect(params) {
this.setState({ status: Status.CONNECTING, connectParams: params });
this.client = new Client({
url: params.serverURL,
pass: params.serverPass,
nick: params.nick,
username: params.username,
realname: params.realname,
saslPlain: params.saslPlain,
});
this.client.addEventListener("close", () => {
this.setState({
status: Status.DISCONNECTED,
buffers: new Map(),
activeBuffer: null,
});
});
this.client.addEventListener("message", (event) => {
this.handleMessage(event.detail.message);
});
this.client.addEventListener("error", (event) => {
this.setState({
error: event.detail,
});
});
this.createBuffer(SERVER_BUFFER);
this.switchBuffer(SERVER_BUFFER);
}
handleMessage(msg) {
switch (msg.command) {
case irc.RPL_WELCOME:
this.setState({ status: Status.REGISTERED });
if (this.state.connectParams.autojoin.length > 0) {
this.client.send({
command: "JOIN",
params: [this.state.connectParams.autojoin.join(",")],
});
}
break;
case irc.RPL_MYINFO:
// TODO: parse available modes
var serverInfo = {
name: msg.params[1],
version: msg.params[2],
};
this.setBufferState(SERVER_BUFFER, { serverInfo });
break;
case irc.RPL_NOTOPIC:
var channel = msg.params[1];
this.setBufferState(channel, { topic: null });
break;
case irc.RPL_TOPIC:
var channel = msg.params[1];
var topic = msg.params[2];
this.setBufferState(channel, { topic });
break;
case irc.RPL_NAMREPLY:
var channel = msg.params[2];
var membersList = msg.params[3].split(" ");
this.setBufferState(channel, (buf) => {
var members = new Map(buf.members);
membersList.forEach((s) => {
var member = irc.parseMembership(s);
members.set(member.nick, member.prefix);
});
return { members };
});
break;
case irc.RPL_ENDOFNAMES:
break;
case irc.RPL_WHOREPLY:
var last = msg.params[msg.params.length - 1];
var who = {
username: msg.params[2],
hostname: msg.params[3],
server: msg.params[4],
nick: msg.params[5],
away: msg.params[6] == 'G', // H for here, G for gone
realname: last.slice(last.indexOf(" ") + 1),
};
this.setBufferState(who.nick, { who, offline: false });
break;
case irc.RPL_ENDOFWHO:
var target = msg.params[1];
if (!this.isChannel(target) && target.indexOf("*") < 0) {
// Not a channel nor a mask, likely a nick
this.setBufferState(target, (buf) => {
// TODO: mark user offline if we have old WHO info but this
// WHO reply is empty
if (buf.who) {
return;
}
return { offline: true };
});
}
break;
case "NOTICE":
case "PRIVMSG":
var target = msg.params[0];
if (target == this.client.nick) {
target = msg.prefix.name;
}
this.addMessage(target, msg);
break;
case "JOIN":
var channel = msg.params[0];
this.createBuffer(channel);
this.setBufferState(channel, (buf) => {
var members = new Map(buf.members);
members.set(msg.prefix.name, null);
return { members };
});
if (msg.prefix.name != this.client.nick) {
this.addMessage(channel, msg);
}
if (channel == this.state.connectParams.autojoin[0]) {
// TODO: only switch once right after connect
this.switchBuffer(channel);
}
var receipt = this.getReceipt(channel, ReceiptType.READ);
if (msg.prefix.name == this.client.nick && receipt) {
var after = receipt;
var before = { time: msg.tags.time || irc.formatDate(new Date()) };
this.fetchHistoryBetween(channel, after, before, CHATHISTORY_MAX_SIZE).catch((err) => {
this.setState({ error: "Failed to fetch history: " + err });
this.receipts.delete(channel);
this.saveReceipts();
});
}
break;
case "PART":
var channel = msg.params[0];
this.setBufferState(channel, (buf) => {
var members = new Map(buf.members);
members.delete(msg.prefix.name);
return { members };
});
this.addMessage(channel, msg);
if (msg.prefix.name == this.client.nick) {
this.receipts.delete(channel);
this.saveReceipts();
}
break;
case "QUIT":
var affectedBuffers = [];
this.setState((state) => {
var buffers = new Map(state.buffers);
state.buffers.forEach((buf) => {
if (!buf.members.has(msg.prefix.name) && buf.name != msg.prefix.name) {
return;
}
var members = new Map(buf.members);
members.delete(msg.prefix.name);
var offline = buf.name == msg.prefix.name;
buffers.set(buf.name, { ...buf, members, offline });
affectedBuffers.push(buf.name);
});
return { buffers };
});
affectedBuffers.forEach((name) => this.addMessage(name, msg));
break;
case "NICK":
var newNick = msg.params[0];
var affectedBuffers = [];
this.setState((state) => {
var buffers = new Map(state.buffers);
state.buffers.forEach((buf) => {
if (!buf.members.has(msg.prefix.name)) {
return;
}
var members = new Map(buf.members);
members.set(newNick, members.get(msg.prefix.name));
members.delete(msg.prefix.name);
buffers.set(buf.name, { ...buf, members });
affectedBuffers.push(buf.name);
});
return { buffers };
});
affectedBuffers.forEach((name) => this.addMessage(name, msg));
break;
case "TOPIC":
var channel = msg.params[0];
var topic = msg.params[1];
this.setBufferState(channel, { topic });
this.addMessage(channel, msg);
break;
case "AWAY":
var awayMessage = msg.params[0];
this.setBufferState(msg.prefix.name, (buf) => {
var who = { ...buf.who, away: !!awayMessage };
return { who };
});
break;
case "CAP":
case "AUTHENTICATE":
case "PING":
case "BATCH":
// Ignore these
break;
default:
this.addMessage(SERVER_BUFFER, msg);
}
}
handleConnectSubmit(connectParams) {
if (window.localStorage) {
if (connectParams.autoconnect) {
localStorage.setItem("autoconnect", JSON.stringify(connectParams));
} else {
localStorage.removeItem("autoconnect");
}
}
this.connect(connectParams);
}
handleNickClick(nick) {
this.open(nick);
}
isChannel(name) {
// TODO: use the ISUPPORT token if available
return irc.STD_CHANNEL_TYPES.indexOf(name[0]) >= 0;
}
open(target) {
if (this.isChannel(target)) {
this.client.send({ command: "JOIN", params: [target] });
} else {
this.client.send({ command: "WHO", params: [target] });
}
this.createBuffer(target);
this.switchBuffer(target);
}
close(target) {
if (target == SERVER_BUFFER) {
this.client.close();
return;
}
if (this.isChannel(target)) {
this.client.send({ command: "PART", params: [target] });
}
this.switchBuffer(SERVER_BUFFER);
this.setState((state) => {
var buffers = new Map(state.buffers);
buffers.delete(target);
return { buffers };
});
this.receipts.delete(target);
this.saveReceipts();
}
executeCommand(s) {
var parts = s.split(" ");
var name = parts[0].toLowerCase().slice(1);
var args = parts.slice(1);
var cmd = commands[name];
if (!cmd) {
this.setState({ error: "Unknown command '" + name + "'" });
return;
}
try {
cmd(this, args);
} catch (error) {
this.setState({ error });
}
}
privmsg(target, text) {
if (target == SERVER_BUFFER) {
this.setState({ error: "Cannot send message in server buffer" });
return;
}
var msg = { command: "PRIVMSG", params: [target, text] };
this.client.send(msg);
if (!this.client.enabledCaps["echo-message"]) {
msg.prefix = { name: this.client.nick };
this.addMessage(target, msg);
}
}
handleComposerSubmit(text) {
if (!text) {
return;
}
if (text.startsWith("//")) {
text = text.slice(1);
} else if (text.startsWith("/")) {
this.executeCommand(text);
return;
}
var target = this.state.activeBuffer;
if (!target) {
return;
}
this.privmsg(target, text);
}
handleBufferListClick(name) {
this.switchBuffer(name);
}
handleJoinClick(event) {
event.preventDefault();
var channel = prompt("Join channel:");
if (!channel) {
return;
}
this.client.send({ command: "JOIN", params: [channel] });
}
autocomplete(prefix) {
function fromList(l, prefix) {
prefix = prefix.toLowerCase();
var repl = null;
for (var item of l) {
if (item.toLowerCase().startsWith(prefix)) {
if (repl) {
return null;
}
repl = item;
}
}
return repl;
}
if (prefix.startsWith("/")) {
var repl = fromList(Object.keys(commands), prefix.slice(1));
if (repl) {
repl = "/" + repl;
}
return repl;
}
if (!this.state.activeBuffer) {
return null;
}
var buf = this.state.buffers.get(this.state.activeBuffer);
return fromList(buf.members.keys(), prefix);
}
roundtripChatHistory(params) {
// Don't send multiple CHATHISTORY commands in parallel, we can't
// properly handle batches and errors.
this.pendingHistory = this.pendingHistory.catch(() => {}).then(() => {
var msg = {
command: "CHATHISTORY",
params,
};
return this.client.roundtrip(msg, (event) => {
var msg = event.detail.message;
switch (msg.command) {
case "BATCH":
var enter = msg.params[0].startsWith("+");
var name = msg.params[0].slice(1);
if (enter) {
break;
}
var batch = this.client.batches.get(name);
if (batch.type == "chathistory") {
return batch;
}
break;
case "FAIL":
if (msg.params[0] == "CHATHISTORY") {
throw msg;
}
break;
}
});
});
return this.pendingHistory;
}
/* Fetch history in ascending order */
fetchHistoryBetween(target, after, before, limit) {
var max = Math.min(limit, CHATHISTORY_PAGE_SIZE);
var params = ["AFTER", target, "timestamp=" + after.time, max];
return this.roundtripChatHistory(params).then((batch) => {
limit -= batch.messages.length;
if (limit <= 0) {
throw new Error("Cannot fetch all chat history: too many messages");
}
if (batch.messages.length == max) {
// There are still more messages to fetch
after.time = batch.messages[batch.messages.length - 1].tags.time;
return this.fetchHistoryBetween(target, after, before, limit);
}
});
}
handleBufferScrollTop() {
var target = this.state.activeBuffer;
if (!target || target == SERVER_BUFFER) {
return;
}
if (!this.client.enabledCaps["draft/chathistory"] || !this.client.enabledCaps["server-time"]) {
return;
}
if (this.endOfHistory.get(target)) {
return;
}
var buf = this.state.buffers.get(target);
var before;
if (buf.messages.length > 0) {
before = buf.messages[0].tags["time"];
} else {
before = irc.formatDate(new Date());
}
// Avoids sending multiple CHATHISTORY commands in parallel
this.endOfHistory.set(target, true);
var params = ["BEFORE", target, "timestamp=" + before, CHATHISTORY_PAGE_SIZE];
this.roundtripChatHistory(params).then((batch) => {
this.endOfHistory.set(target, batch.messages.length < CHATHISTORY_PAGE_SIZE);
});
}
componentDidMount() {
if (this.state.connectParams.autoconnect) {
this.connect(this.state.connectParams);
}
setupKeybindings(this);
}
render() {
if (this.state.status != Status.REGISTERED) {
return html`
<section id="connect">
<${Connect} error=${this.state.error} params=${this.state.connectParams} disabled=${this.state.status != Status.DISCONNECTED} onSubmit=${this.handleConnectSubmit}/>
</section>
`;
}
var activeBuffer = null;
if (this.state.activeBuffer) {
activeBuffer = this.state.buffers.get(this.state.activeBuffer);
}
var bufferHeader = null;
if (activeBuffer) {
bufferHeader = html`
<section id="buffer-header">
<${BufferHeader} buffer=${activeBuffer} onClose=${() => this.close(activeBuffer.name)}/>
</section>
`;
}
var memberList = null;
if (activeBuffer && activeBuffer.type == BufferType.CHANNEL) {
memberList = html`
<section id="member-list-header">
${activeBuffer.members.size} users
</section>
<section id="member-list">
<${MemberList} members=${activeBuffer.members} onNickClick=${this.handleNickClick}/>
</section>
`;
}
return html`
<section id="buffer-list">
<${BufferList} buffers=${this.state.buffers} activeBuffer=${this.state.activeBuffer} onBufferClick=${this.handleBufferListClick}/>
<div class="actions">
<a href="#" onClick=${this.handleJoinClick}>Join channel</a>
</div>
</section>
${bufferHeader}
<${ScrollManager} target=${this.buffer} scrollKey=${this.state.activeBuffer} onScrollTop=${this.handleBufferScrollTop}>
<section id="buffer" ref=${this.buffer}>
<${Buffer} buffer=${activeBuffer} onNickClick=${this.handleNickClick}/>
</section>
</>
${memberList}
<${Composer} ref=${this.composer} readOnly=${this.state.activeBuffer == SERVER_BUFFER} onSubmit=${this.handleComposerSubmit} autocomplete=${this.autocomplete}/>
${this.state.error ? html`
<p id="error-msg">${this.state.error} <a href="#" onClick=${this.dismissError}>×</a></p>
` : null}
`;
}
}