2017-11-15 10:06:52 -08:00
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import { EventEmitter } from 'eventemitter3';
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import * as riot from 'riot';
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import signout from './scripts/signout';
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import Progress from './scripts/loading';
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import Connection from './scripts/home-stream';
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import CONFIG from './scripts/config';
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import api from './scripts/api';
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/**
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* Misskey Operating System
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*/
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export default class MiOS extends EventEmitter {
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/**
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* Misskeyの /meta で取得できるメタ情報
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*/
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private meta: {
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data: { [x: string]: any };
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chachedAt: Date;
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};
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private isMetaFetching = false;
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/**
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* A signing user
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*/
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2017-11-15 16:00:24 -08:00
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public i: { [x: string]: any };
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2017-11-15 10:06:52 -08:00
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/**
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* Whether signed in
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*/
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public get isSignedin() {
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return this.i != null;
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}
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/**
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* A connection of home stream
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*/
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public stream: Connection;
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constructor() {
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super();
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//#region BIND
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this.init = this.init.bind(this);
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this.api = this.api.bind(this);
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this.getMeta = this.getMeta.bind(this);
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//#endregion
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}
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/**
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* Initialize MiOS (boot)
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* @param callback A function that call when initialized
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*/
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public async init(callback) {
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// ユーザーをフェッチしてコールバックする
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const fetchme = (token, cb) => {
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let me = null;
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// Return when not signed in
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if (token == null) {
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return done();
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}
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// Fetch user
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fetch(`${CONFIG.apiUrl}/i`, {
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method: 'POST',
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body: JSON.stringify({
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i: token
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})
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}).then(res => { // When success
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// When failed to authenticate user
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if (res.status !== 200) {
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return signout();
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}
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res.json().then(i => {
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me = i;
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me.token = token;
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done();
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});
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}, () => { // When failure
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// Render the error screen
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document.body.innerHTML = '<mk-error />';
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riot.mount('*');
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Progress.done();
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});
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function done() {
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if (cb) cb(me);
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}
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};
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// フェッチが完了したとき
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const fetched = me => {
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if (me) {
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riot.observable(me);
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// この me オブジェクトを更新するメソッド
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me.update = data => {
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if (data) Object.assign(me, data);
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me.trigger('updated');
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};
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// ローカルストレージにキャッシュ
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localStorage.setItem('me', JSON.stringify(me));
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me.on('updated', () => {
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// キャッシュ更新
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localStorage.setItem('me', JSON.stringify(me));
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});
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}
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this.i = me;
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// Init home stream connection
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this.stream = this.i ? new Connection(this.i) : null;
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// Finish init
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callback();
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};
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// Get cached account data
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const cachedMe = JSON.parse(localStorage.getItem('me'));
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if (cachedMe) {
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fetched(cachedMe);
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// 後から新鮮なデータをフェッチ
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fetchme(cachedMe.token, freshData => {
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Object.assign(cachedMe, freshData);
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cachedMe.trigger('updated');
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});
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} else {
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// Get token from cookie
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const i = (document.cookie.match(/i=(!\w+)/) || [null, null])[1];
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fetchme(i, fetched);
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}
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}
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/**
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* Misskey APIにリクエストします
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* @param endpoint エンドポイント名
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* @param data パラメータ
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*/
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public api(endpoint: string, data?: { [x: string]: any }) {
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return api(this.i, endpoint, data);
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}
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/**
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* Misskeyのメタ情報を取得します
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* @param force キャッシュを無視するか否か
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*/
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public getMeta(force = false) {
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return new Promise<{ [x: string]: any }>(async (res, rej) => {
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if (this.isMetaFetching) {
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this.once('_meta_fetched_', () => {
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res(this.meta.data);
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});
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return;
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}
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const expire = 1000 * 60; // 1min
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// forceが有効, meta情報を保持していない or 期限切れ
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if (force || this.meta == null || Date.now() - this.meta.chachedAt.getTime() > expire) {
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this.isMetaFetching = true;
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const meta = await this.api('meta');
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this.meta = {
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data: meta,
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chachedAt: new Date()
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};
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this.isMetaFetching = false;
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this.emit('_meta_fetched_');
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res(meta);
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} else {
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res(this.meta.data);
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}
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});
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}
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}
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