misskey-awawa/src/web/app/common/mios.ts

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import { EventEmitter } from 'eventemitter3';
import * as riot from 'riot';
import signout from './scripts/signout';
import Progress from './scripts/loading';
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import HomeStreamManager from './scripts/streaming/home-stream-manager';
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import api from './scripts/api';
declare const _VERSION_: string;
declare const _LANG_: string;
declare const _API_URL_: string;
declare const _SW_PUBLICKEY_: string;
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/**
* Misskey Operating System
*/
export default class MiOS extends EventEmitter {
/**
* Misskeyの /meta
*/
private meta: {
data: { [x: string]: any };
chachedAt: Date;
};
private isMetaFetching = false;
/**
* A signing user
*/
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public i: { [x: string]: any };
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/**
* Whether signed in
*/
public get isSignedin() {
return this.i != null;
}
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/**
* Whether is debug mode
*/
public get debug() {
return localStorage.getItem('debug') == 'true';
}
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/**
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* A connection manager of home stream
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*/
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public stream: HomeStreamManager;
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/**
* A registration of service worker
*/
private swRegistration: ServiceWorkerRegistration = null;
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/**
* Whether should register ServiceWorker
*/
private shouldRegisterSw: boolean;
/**
* MiOSインスタンスを作成します
* @param shouldRegisterSw ServiceWorkerを登録するかどうか
*/
constructor(shouldRegisterSw = false) {
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super();
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this.shouldRegisterSw = shouldRegisterSw;
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//#region BIND
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this.log = this.log.bind(this);
this.logInfo = this.logInfo.bind(this);
this.logWarn = this.logWarn.bind(this);
this.logError = this.logError.bind(this);
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this.init = this.init.bind(this);
this.api = this.api.bind(this);
this.getMeta = this.getMeta.bind(this);
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this.registerSw = this.registerSw.bind(this);
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//#endregion
}
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public log(...args) {
if (!this.debug) return;
console.log.apply(null, args);
}
public logInfo(...args) {
if (!this.debug) return;
console.info.apply(null, args);
}
public logWarn(...args) {
if (!this.debug) return;
console.warn.apply(null, args);
}
public logError(...args) {
if (!this.debug) return;
console.error.apply(null, args);
}
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/**
* Initialize MiOS (boot)
* @param callback A function that call when initialized
*/
public async init(callback) {
// ユーザーをフェッチしてコールバックする
const fetchme = (token, cb) => {
let me = null;
// Return when not signed in
if (token == null) {
return done();
}
// Fetch user
fetch(`${_API_URL_}/i`, {
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method: 'POST',
body: JSON.stringify({
i: token
})
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})
// When success
.then(res => {
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// When failed to authenticate user
if (res.status !== 200) {
return signout();
}
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// Parse response
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res.json().then(i => {
me = i;
me.token = token;
done();
});
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})
// When failure
.catch(() => {
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// Render the error screen
document.body.innerHTML = '<mk-error />';
riot.mount('*');
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Progress.done();
});
function done() {
if (cb) cb(me);
}
};
// フェッチが完了したとき
const fetched = me => {
if (me) {
riot.observable(me);
// この me オブジェクトを更新するメソッド
me.update = data => {
if (data) Object.assign(me, data);
me.trigger('updated');
};
// ローカルストレージにキャッシュ
localStorage.setItem('me', JSON.stringify(me));
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// 自分の情報が更新されたとき
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me.on('updated', () => {
// キャッシュ更新
localStorage.setItem('me', JSON.stringify(me));
});
}
this.i = me;
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// Init home stream manager
this.stream = this.isSignedin
? new HomeStreamManager(this.i)
: null;
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// Finish init
callback();
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//#region Post
// Init service worker
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if (this.shouldRegisterSw) this.registerSw();
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//#endregion
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};
// Get cached account data
const cachedMe = JSON.parse(localStorage.getItem('me'));
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// キャッシュがあったとき
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if (cachedMe) {
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// とりあえずキャッシュされたデータでお茶を濁して(?)おいて、
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fetched(cachedMe);
// 後から新鮮なデータをフェッチ
fetchme(cachedMe.token, freshData => {
Object.assign(cachedMe, freshData);
cachedMe.trigger('updated');
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cachedMe.trigger('refreshed');
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});
} else {
// Get token from cookie
const i = (document.cookie.match(/i=(!\w+)/) || [null, null])[1];
fetchme(i, fetched);
}
}
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/**
* Register service worker
*/
private registerSw() {
// Check whether service worker and push manager supported
const isSwSupported =
('serviceWorker' in navigator) && ('PushManager' in window);
// Reject when browser not service worker supported
if (!isSwSupported) return;
// Reject when not signed in to Misskey
if (!this.isSignedin) return;
// When service worker activated
navigator.serviceWorker.ready.then(registration => {
this.log('[sw] ready: ', registration);
this.swRegistration = registration;
// Options of pushManager.subscribe
// SEE: https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe#Parameters
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const opts = {
// A boolean indicating that the returned push subscription
// will only be used for messages whose effect is made visible to the user.
userVisibleOnly: true,
// A public key your push server will use to send
// messages to client apps via a push server.
applicationServerKey: urlBase64ToUint8Array(_SW_PUBLICKEY_)
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};
// Subscribe push notification
this.swRegistration.pushManager.subscribe(opts).then(subscription => {
this.log('[sw] Subscribe OK:', subscription);
function encode(buffer: ArrayBuffer) {
return btoa(String.fromCharCode.apply(null, new Uint8Array(buffer)));
}
// Register
this.api('sw/register', {
endpoint: subscription.endpoint,
auth: encode(subscription.getKey('auth')),
publickey: encode(subscription.getKey('p256dh'))
});
}).then(() => {
this.logInfo('[sw] Server Stored Subscription.');
}).catch(err => {
this.logError('[sw] Subscribe Error:', err);
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});
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});
// The path of service worker script
const sw = `/sw.${_VERSION_}.${_LANG_}.js`;
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// Register service worker
navigator.serviceWorker.register(sw).then(registration => {
// 登録成功
this.logInfo('[sw] Registration successful with scope: ', registration.scope);
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}).catch(err => {
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// 登録失敗 :(
this.logError('[sw] Registration failed: ', err);
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});
}
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/**
* Misskey APIにリクエストします
* @param endpoint
* @param data
*/
public api(endpoint: string, data?: { [x: string]: any }) {
return api(this.i, endpoint, data);
}
/**
* Misskeyのメタ情報を取得します
* @param force
*/
public getMeta(force = false) {
return new Promise<{ [x: string]: any }>(async (res, rej) => {
if (this.isMetaFetching) {
this.once('_meta_fetched_', () => {
res(this.meta.data);
});
return;
}
const expire = 1000 * 60; // 1min
// forceが有効, meta情報を保持していない or 期限切れ
if (force || this.meta == null || Date.now() - this.meta.chachedAt.getTime() > expire) {
this.isMetaFetching = true;
const meta = await this.api('meta');
this.meta = {
data: meta,
chachedAt: new Date()
};
this.isMetaFetching = false;
this.emit('_meta_fetched_');
res(meta);
} else {
res(this.meta.data);
}
});
}
}
/**
* Convert the URL safe base64 string to a Uint8Array
* @param base64String base64 string
*/
function urlBase64ToUint8Array(base64String: string): Uint8Array {
const padding = '='.repeat((4 - base64String.length % 4) % 4);
const base64 = (base64String + padding)
.replace(/\-/g, '+')
.replace(/_/g, '/');
const rawData = window.atob(base64);
const outputArray = new Uint8Array(rawData.length);
for (let i = 0; i < rawData.length; ++i) {
outputArray[i] = rawData.charCodeAt(i);
}
return outputArray;
}