511 lines
15 KiB
JavaScript
511 lines
15 KiB
JavaScript
import gateway, { GatewayEventType, GatewayPayloadType, GatewayPresenceStatus } from "./gateway";
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import logger from "./logging";
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import request from "./request";
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import { apiRoute, getItem, setItem } from "./storage";
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const storeLog = logger("Store");
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class Store {
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constructor(value=null, name="[no name]") {
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this._handlers = [];
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this.value = value;
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this.name = name;
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}
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// like subscribe, but without initially calling the handler
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watch(handler) {
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const handlerIndex = this._handlers.push(handler) - 1;
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return () => {
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this._handlers.splice(handlerIndex, 1);
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};
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}
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subscribe(handler) {
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const handlerIndex = this._handlers.push(handler) - 1;
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storeLog(`(${this.name}) (subscribe/initial)`, this.value);
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handler(this.value);
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return () => {
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this._handlers.splice(handlerIndex, 1);
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};
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}
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set(value) {
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if (value === this.value)
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return;
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this.value = value;
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this.updated();
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}
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// like set(), but without checking if the value is the same
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update(value) {
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this.value = value;
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this.updated();
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}
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updated() {
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storeLog(`(${this.name}) (updated) Calling all (${this._handlers.length}) handlers`, this.value);
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for (let i = this._handlers.length - 1; i >= 0; i--) {
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this._handlers[i](this.value);
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}
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}
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}
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class StorageItemStore extends Store {
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constructor(key) {
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super(getItem(key), `StorageItemStore[key=${key}]`);
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this.watch(e => setItem(key, e));
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}
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}
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class ChannelsStore extends Store {
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constructor() {
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super(gateway.channels || [], "ChannelsStore");
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gateway.subscribe(GatewayEventType.Ready, ({ channels }) => {
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this.value = channels;
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if (getItem("ui:stateful:presistSelectedChannel")) {
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selectedChannel.value.id = getItem("state:openChannelId");
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}
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if (channels.length >= 1) {
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if (!selectedChannel.value || selectedChannel.value.id === -1) {
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selectedChannel.set(channels[0]);
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} else {
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// if a channel id is already selected, we'll populate it with the data we just got from the gateway
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const index = this.value.findIndex(e => e.id === selectedChannel.value.id);
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if (index !== -1)
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selectedChannel.set(this.value[index]);
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else // if the channel doesn't exist, just select the first one
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selectedChannel.set(channels[0]);
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}
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}
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this.updated();
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});
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gateway.subscribe(GatewayEventType.ChannelCreate, (channel) => {
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this.value.push(channel);
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this.updated();
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});
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gateway.subscribe(GatewayEventType.ChannelDelete, ({ id }) => {
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const index = this.value.findIndex(e => e.id === id);
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if (index === -1)
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return;
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this.value.splice(index, 1);
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this.updated();
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});
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gateway.subscribe(GatewayEventType.ChannelUpdate, (data) => {
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const index = this.value.findIndex(e => e.id === data.id);
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if (index === -1)
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return;
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if (!this.value[index])
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return;
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this.value[index] = data;
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this.updated();
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});
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}
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}
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class GatewayStatusStore extends Store {
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constructor() {
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super({ ready: gateway.authenticated }, "GatewayStatusStore");
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gateway.subscribe(GatewayEventType.Close, () => {
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this.value.ready = false;
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this.updated();
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});
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gateway.subscribe(GatewayEventType.Ready, () => {
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this.value.ready = true;
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this.updated();
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});
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}
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}
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class UserInfoStore extends Store {
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constructor() {
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super(null, "UserInfoStore");
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gateway.subscribe(GatewayEventType.Ready, ({ user }) => {
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this.value = user;
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this.updated();
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});
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}
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}
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class MessageStore extends Store {
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constructor(channelId) {
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super([], `MessageStore[channelId=${channelId}]`);
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this.channelId = channelId;
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this.isCollectingOldMessages = true;
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this.didDoInitialLoad = false;
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}
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setMessage(id, message) {
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const index = this.value.findIndex(e => e.id === id);
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if (index === -1)
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return;
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this.value[index] = message;
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this.updated();
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}
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addMessage(message) {
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if (message.optimistic_id) {
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const index = this.value.findIndex(e => e.id === message.optimistic_id);
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if (index !== -1) {
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this.value[index] = message;
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this.updated();
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return;
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}
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}
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this.value.push(message);
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// only dispatch update if collectOldMessages didn't
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if (!this.collectOldMessages()) {
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this.updated();
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}
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}
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updateId(oldId, newId) {
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const index = this.value.findIndex(e => e.id === oldId);
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if (index === -1)
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return;
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this.value[index].id = newId;
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this.updated();
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}
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updateMessage(message) {
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const index = this.value.findIndex(e => e.id === message.id);
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if (index === -1)
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return;
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this.value[index] = message;
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this.updated();
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}
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deleteMessage({ id }) {
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const index = this.value.findIndex(e => e.id === id);
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if (index === -1)
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return;
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this.value.splice(index, 1);
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this.updated();
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}
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collectOldMessages() {
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if (!this.isCollectingOldMessages)
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return false;
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const target = 50;
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const delta = this.value.length - target;
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if (delta >= 1) {
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this.value.splice(0, delta);
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this.updated();
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return true;
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} else {
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return false;
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}
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}
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setIsCollectingOldMessages(isCollectingOldMessages) {
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this.isCollectingOldMessages = isCollectingOldMessages;
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this.collectOldMessages();
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}
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async loadOlderMessages(beforeCommitToStore=null) {
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if (!getItem("ui:online:loadMessageHistory") || this.channelId === -1)
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return;
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const oldestMessage = this.value[0];
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const endpoint = oldestMessage ? `channels/${this.channelId}/messages/?before=${oldestMessage.id}` : `channels/${this.channelId}/messages`;
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const res = await request("GET", apiRoute(endpoint), true, null);
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if (res.success && res.ok && res.json) {
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if (res.json.length < 1)
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return;
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if (beforeCommitToStore)
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beforeCommitToStore(res.json);
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res.json.reverse();
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this.value = res.json.concat(this.value);
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this.updated();
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} else {
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overlayStore.open("toast", {
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message: "Messages failed to load"
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});
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}
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}
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async doInitialLoad() {
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if (this.channelId === -1 || !getItem("auth:token") || getItem("auth:token").length < 1)
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return;
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await this.loadOlderMessages();
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this.didDoInitialLoad = true;
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}
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}
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class MessagesStoreProvider {
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constructor() {
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this.storeByChannel = new Map();
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gateway.subscribe(GatewayEventType.MessageCreate, (message) => {
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const store = this.getStoreOrNull(message.channel_id);
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if (store)
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store.addMessage(message);
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});
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gateway.subscribe(GatewayEventType.MessageUpdate, (message) => {
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const store = this.getStoreOrNull(message.channel_id);
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if (store)
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store.updateMessage(message);
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});
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gateway.subscribe(GatewayEventType.MessageDelete, (message) => {
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const store = this.getStoreOrNull(message.channel_id);
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if (store)
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store.deleteMessage(message);
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});
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}
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getStoreOrNull(channelId) {
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return this.storeByChannel.get(channelId);
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}
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getStore(channelId) {
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if (!this.storeByChannel.get(channelId)) {
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const store = new MessageStore(channelId);
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store.doInitialLoad();
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this.storeByChannel.set(channelId, store);
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}
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return this.storeByChannel.get(channelId);
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}
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}
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class OverlayStore extends Store {
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constructor() {
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super({
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createChannel: null,
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editChannel: null,
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toast: null,
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login: null,
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createAccount: null,
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editMessage: null,
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settings: null,
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prompt: null,
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}, "OverlayStore");
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}
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open(name, props={}) {
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if (this.value[name] === undefined)
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throw new Error(`OverlayStore.open: tried to open unknown overlay with name '${name}' (undefined in overlay map)`);
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this.value[name] = props;
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this.updated();
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}
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close(name) {
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if (!this.value[name])
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return;
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this.value[name] = null;
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this.updated();
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}
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}
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class TypingStore extends Store {
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constructor() {
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super([], "TypingStore");
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this.timeouts = new Map();
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this.ownTimeout = null;
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this.ownNeedsUpdate = true;
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if (getItem("ui:online:processRemoteTypingEvents")) {
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gateway.subscribe(GatewayPayloadType.TypingStart, ({ user, channel, time }) => {
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if (userInfoStore && user.id === userInfoStore.value.id)
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return;
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this.startedTyping(user, channel.id, time);
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});
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// assume someone has stopped typing once they send a message
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gateway.subscribe(GatewayPayloadType.MessageCreate, ({ author_id }) => {
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this.stoppedTyping(author_id);
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});
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}
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}
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stoppedTyping(id) {
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const index = this.value.findIndex(e => e.user.id === id);
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this.value.splice(index, 1);
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if (this.timeouts.get(id)) {
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clearTimeout(this.timeouts.get(id));
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this.timeouts.delete(id);
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}
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if (userInfoStore.value && id === userInfoStore.value.id) {
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clearTimeout(this.ownTimeout);
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this.ownTimeout = null;
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this.ownNeedsUpdate = true;
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}
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this.updated();
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}
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startedTyping(user, channelId, time) {
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if (this.timeouts.get(user.id)) {
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clearTimeout(this.timeouts.get(user.id));
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}
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this.timeouts.set(user.id, setTimeout(() => {
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this.stoppedTyping(user.id);
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}, time));
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if (userInfoStore.value && user.id === userInfoStore.value.id && !this.ownTimeout) {
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this.ownTimeout = setTimeout(() => {
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this.ownNeedsUpdate = true;
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this.ownTimeout = null;
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}, time);
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}
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const index = this.value.findIndex(e => e.user.id === user.id);
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if (index === -1) {
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this.value.push({
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user,
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channelId
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});
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this.updated();
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} else if (this.value[index].channelId !== channelId) { // user just switched the channel they're typing in
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this.value[index].channelId = channelId;
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this.updated();
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}
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}
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async didInputKey() {
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if (!userInfoStore.value || !getItem("ui:online:sendTypingUpdates"))
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return;
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this.startedTyping(userInfoStore.value, selectedChannel.value.id, 6500);
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if (this.ownNeedsUpdate) {
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this.ownNeedsUpdate = false;
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await request("POST", apiRoute(`channels/${selectedChannel.value.id}/typing`), true, {});
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}
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}
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}
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class PresenceStore extends Store {
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constructor() {
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super([], "PresenceStore");
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if (getItem("ui:online:processRemotePresenceEvents")) {
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gateway.subscribe(GatewayEventType.Ready, ({ presence }) => {
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this.ingestPresenceUpdate(presence);
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});
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gateway.subscribe(GatewayEventType.PresenceUpdate, (data) => {
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this.ingestPresenceUpdate(data);
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});
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}
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}
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entryIndexByUserId(userId) {
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return this.value.findIndex(a => a.user.id === userId);
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}
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ingestPresenceUpdate(payload) {
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payload.forEach((entry) => {
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const existingEntry = this.entryIndexByUserId(entry.user.id);
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if (existingEntry !== -1 && entry.status === GatewayPresenceStatus.Offline) {
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this.value.splice(existingEntry, 1);
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} else if (existingEntry !== -1 && entry.status !== GatewayPresenceStatus.Offline) {
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this.value[existingEntry] = entry;
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} else {
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// don't need to push the status, since we remove offline members from the presence list
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this.value.push({
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user: entry.user
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});
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}
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});
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this.updated();
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}
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}
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class UnreadStore extends Store {
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constructor() {
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super(new Map(), "UnreadStore");
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gateway.subscribe(GatewayEventType.MessageCreate, ({ channel_id: channelId }) => {
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if (selectedChannel.value.id !== channelId || window.document.visibilityState !== "visible") {
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this.value.set(channelId, (this.value.get(channelId) || 0) + 1);
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this.updated();
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}
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});
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selectedChannel.subscribe(({ id }) => {
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this.value.delete(id);
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this.updated();
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});
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window.document.addEventListener("visibilitychange", () => {
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if (window.document.visibilityState === "visible" && selectedChannel.value) {
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this.value.delete(selectedChannel.value.id);
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this.updated();
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}
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});
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}
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}
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export const selectedChannel = new Store({ id: -1, name: "none", creator_id: -1 }, "selectedChannel");
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export const showSidebar = new Store(true, "showSidebar");
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export const showPresenceSidebar = new Store(false, "showPresenceSidebar");
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export const smallViewport = new Store(false, "smallViewport");
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export const showChannelView = new Store(true, "showChannelView");
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export const theme = new StorageItemStore("ui:theme");
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export const doAnimations = new StorageItemStore("ui:doAnimations");
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export const channels = new ChannelsStore();
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export const gatewayStatus = new GatewayStatusStore();
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export const messagesStoreProvider = new MessagesStoreProvider();
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export const userInfoStore = new UserInfoStore();
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export const overlayStore = new OverlayStore();
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export const typingStore = new TypingStore();
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export const presenceStore = new PresenceStore();
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export const unreadStore = new UnreadStore();
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export const setMessageInputEvent = new Store(null, "event:setMessageInput");
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export const allStores = {
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selectedChannel,
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showSidebar,
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showPresenceSidebar,
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smallViewport,
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showChannelView,
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theme,
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doAnimations,
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channels,
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gatewayStatus,
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messagesStoreProvider,
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userInfoStore,
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overlayStore,
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typingStore,
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presenceStore,
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unreadStore,
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setMessageInputEvent,
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};
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selectedChannel.watch((newSelectedChannel) => {
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if (getItem("ui:stateful:presistSelectedChannel")) {
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setItem("state:openChannelId", newSelectedChannel.id);
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}
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});
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unreadStore.subscribe(() => {
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let totalUnreads = 0;
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unreadStore.value.forEach(count => totalUnreads += count);
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if (totalUnreads > 0) {
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window.document.title = `(${totalUnreads}) waffle`;
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} else {
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window.document.title = "waffle";
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}
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});
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