ui: 优化资源加载

packages/ui-default/entry.js

@@ -1,5 +1,6 @@
 window.Hydro = {
   extraPages: [],
+  preload: [],
   components: {},
   utils: {},
   node_modules: {},
@@ -19,9 +20,28 @@ console.log(
 `,
 );
 
-window.UiContext = JSON.parse(window.UiContext);
+document.addEventListener('DOMContentLoaded', () => {
+  window.UiContext = JSON.parse(window.UiContext);
 
-// eslint-disable-next-line
-try { __webpack_public_path__ = UiContext.cdn_prefix } catch (e) { }
+  // eslint-disable-next-line
+  try { __webpack_public_path__ = UiContext.cdn_prefix } catch (e) { }
 
-import('./hydro');
+  // Locale & langs
+  const { version, payload } = JSON.parse(localStorage.getItem('hydro-constant') || '{}');
+  if (version === UiContext.constantVersion) {
+    eval(payload[0]); // eslint-disable-line no-eval
+    payload.shift();
+    window.Hydro.preload = payload;
+    import('./hydro');
+  } else {
+    fetch(`/constant?version=${UiContext.constantVersion}`)
+      .then((res) => res.json())
+      .then((data) => {
+        eval(data.payload[0]); // eslint-disable-line no-eval
+        localStorage.setItem('hydro-constant', JSON.stringify(data));
+        data.payload.shift();
+        window.Hydro.preload = data.payload;
+        import('./hydro');
+      });
+  }
+}, false);

packages/ui-default/handler.ts

@@ -1,24 +1,82 @@
 /* eslint-disable no-return-await */
 /* eslint-disable camelcase */
-const { readdirSync, readFileSync } = require('fs');
-const { join } = require('path');
-const crypto = require('crypto');
-const { tmpdir } = require('os');
-const { ObjectID } = require('mongodb');
-const bus = require('hydrooj/src/service/bus');
-const { PERM } = require('hydrooj/src/model/builtin');
-const markdown = require('./backendlib/markdown');
+import crypto from 'crypto';
+import { readdir, readFile } from 'fs-extra';
+import { join } from 'path';
+import { tmpdir } from 'os';
+import { ObjectID } from 'mongodb';
+import * as bus from 'hydrooj/src/service/bus';
+import { Route, Handler } from 'hydrooj/src/service/server';
+import { PERM } from 'hydrooj/src/model/builtin';
+import markdown from './backendlib/markdown';
 
 const {
   system, domain, user, setting, problem, contest,
 } = global.Hydro.model;
-const { Route, Handler, UiContextBase } = global.Hydro.service.server;
+
+interface ConstantArgs {
+  lang: string;
+  domainId: string;
+}
+
+const cache = {};
+
+const basedir = join(tmpdir(), 'hydro', 'public');
+async function constant(args: ConstantArgs) {
+  // CompileLangs
+  const payload = [`window.LANGS=${JSON.stringify(setting.langs)};`];
+
+  // Locale
+  let { lang } = args;
+  if (!global.Hydro.locales[lang]) lang = system.get('server.language');
+  payload[0] += `window.LOCALES=${JSON.stringify(global.Hydro.locales[lang])};`;
+
+  // Extra style
+  let [nav_logo_dark, nav_logo_dark_2x] = system.getMany([
+    'ui-default.nav_logo_dark', 'ui-default.nav_logo_dark_2x',
+  ]);
+  const ddoc = await domain.get(args.domainId);
+  nav_logo_dark = ddoc.ui?.nav_logo_dark || nav_logo_dark;
+  nav_logo_dark_2x = ddoc.ui?.nav_logo_dark_2x || nav_logo_dark_2x;
+  payload[0] += `\
+    const e = document.createElement('style');
+    e.innerHTML = \`\
+      ${nav_logo_dark ? `.nav__logo { background-image: url(${nav_logo_dark}) !important }` : ''}
+      ${nav_logo_dark_2x ? `\
+      @media
+        only screen and (-webkit-min-device-pixel-ratio: 1.5), 
+        only screen and (min-resolution: 1.5dppx),
+        only screen and (min-resolution: 144dpi) {
+        .nav__logo, .header--mobile__domain {
+          background-image: url(${nav_logo_dark_2x}) !important
+        }
+    }` : ''}\`;
+    document.body.appendChild(e);`;
+
+  const files = await readdir(basedir);
+  const pages = files
+    .filter((file) => file.endsWith('.page.js'))
+    .map((i) => readFile(join(basedir, i), 'utf-8'));
+  payload.push(...await Promise.all(pages));
+
+  const c = crypto.createHash('sha1');
+  c.update(JSON.stringify(payload));
+  const version = c.digest('hex');
+  cache[version] = { version, payload };
+  return version;
+}
+
+bus.on('handler/after', async (that) => {
+  if (that.response.template) {
+    that.UiContext.constantVersion = await constant({
+      domainId: that.domainId,
+      lang: that.session.viewLang || that.user.viewLang,
+    });
+  }
+});
 
 class WikiHelpHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
+  noCheckPermView = true;
 
   async get({ domainId }) {
     const LANGS = setting.langs;
@@ -34,72 +92,15 @@ class WikiHelpHandler extends Handler {
 }
 
 class WikiAboutHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
+  noCheckPermView = true;
 
   async get() {
     this.response.template = 'about.html';
   }
 }
 
-class UiConstantsHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
-
-  async get() {
-    this.response.body = `window.LANGS=${JSON.stringify(setting.langs)}`;
-    this.response.type = 'text/javascript';
-    this.ctx.set('nolog', '1');
-  }
-}
-
-class UiSettingsHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
-
-  async get({ domainId }) {
-    const [nav_logo_dark, nav_logo_dark_2x] = system.getMany([
-      'ui-default.nav_logo_dark', 'ui-default.nav_logo_dark_2x',
-    ]);
-    const ddoc = await domain.get(domainId);
-    this.response.body = await this.renderHTML('extra.css', {
-      nav_logo_dark,
-      nav_logo_dark_2x,
-      ...(ddoc.ui || {}),
-    });
-    this.response.type = 'text/css';
-    this.ctx.set('nolog', '1');
-  }
-}
-
-class LocaleHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
-
-  async get({ id }) {
-    // eslint-disable-next-line prefer-destructuring
-    id = id.split('.')[0];
-    // TODO use language_default setting
-    if (!global.Hydro.locales[id]) id = system.get('server.language');
-    this.response.body = `window.LOCALES=${JSON.stringify(global.Hydro.locales[id])}`;
-    this.response.type = 'text/javascript';
-    this.ctx.set('nolog', '1');
-  }
-}
-
 class SetThemeHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
+  noCheckPermView = true
 
   async get({ theme }) {
     await user.setById(this.user._id, { theme });
@@ -108,10 +109,7 @@ class SetThemeHandler extends Handler {
 }
 
 class MarkdownHandler extends Handler {
-  constructor(args) {
-    super(args);
-    this.noCheckPermView = true;
-  }
+  noCheckPermView = true;
 
   async post({ text, html = false, inline = false }) {
     this.response.body = inline
@@ -122,6 +120,14 @@ class MarkdownHandler extends Handler {
   }
 }
 
+class UiConstantsHandler extends Handler {
+  noCheckPermView = true;
+
+  async get({ version }) {
+    this.response.body = cache[version];
+  }
+}
+
 class RichMediaHandler extends Handler {
   async renderUser(domainId, payload) {
     let d = payload.domainId || domainId;
@@ -162,35 +168,11 @@ class RichMediaHandler extends Handler {
   }
 }
 
-const getHash = (i) => {
-  const shasum = crypto.createHash('sha1');
-  const file = readFileSync(join(tmpdir(), 'hydro', 'public', i));
-  shasum.update(file);
-  return shasum.digest('hex').substr(0, 10);
-};
-
-const getUrl = (files) => files.map((i) => `/${i}?${getHash(i)}`);
-
-bus.on('app/started', () => {
-  setTimeout(() => {
-    const files = readdirSync(join(tmpdir(), 'hydro', 'public'));
-    const pages = files.filter((file) => file.endsWith('.page.js'));
-    const themes = files.filter((file) => file.endsWith('.theme.js'));
-    UiContextBase.extraPages = getUrl(pages);
-    UiContextBase.themes = {};
-    for (const theme of themes) {
-      UiContextBase.themes[theme] = `/${theme}?${getHash(theme)}`;
-    }
-  }, 1000);
-});
-
 global.Hydro.handler.ui = async () => {
   Route('wiki_help', '/wiki/help', WikiHelpHandler);
   Route('wiki_about', '/wiki/about', WikiAboutHandler);
-  Route('ui_constants', '/ui-constants.js', UiConstantsHandler);
-  Route('locale', '/locale/:id', LocaleHandler);
   Route('set_theme', '/set_theme/:id', SetThemeHandler);
-  Route('ui_extracss', '/extra.css', UiSettingsHandler);
+  Route('constant', '/constant', UiConstantsHandler);
   Route('markdown', '/markdown', MarkdownHandler);
   Route('media', '/media', RichMediaHandler);
 };

packages/ui-default/hydro.js

@@ -24,25 +24,7 @@ function buildSequence(pages, type) {
 }
 
 async function load() {
-  if (UiContext.extraPages) {
-    const tasks = [];
-    const ts = new Date().getTime();
-    for (const page of UiContext.extraPages) {
-      const head = document.getElementsByTagName('head')[0];
-      const script = document.createElement('script');
-      if (page.includes('.module.')) script.type = 'module';
-      script.src = page;
-      head.appendChild(script);
-      tasks.push(new Promise((resolve) => {
-        script.onload = resolve;
-      }));
-    }
-    await Promise.all(tasks);
-    const time = new Date().getTime() - ts;
-    if ((process.env.NODE_ENV !== 'production' && time > 16) || time > 256) {
-      console.warn(`Extra pages loading took ${time}ms`);
-    }
-  }
+  for (const page of window.Hydro.preload) await eval(page); // eslint-disable-line no-eval
 
   const pageLoader = new PageLoader();
 

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.18.15",
+  "version": "4.19.0",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",

packages/ui-default/templates/components/user.html

@@ -2,7 +2,7 @@
 {% if udoc %}
 <span class="user-profile-link">
   {% if avatar %}
-    <img class="small user-profile-avatar v-center" src="{{ avatarUrl(udoc.avatar|default('')) }}" width="20" height="20">
+    <img class="small user-profile-avatar v-center" loading="lazy" src="{{ avatarUrl(udoc.avatar|default('')) }}" width="20" height="20">
   {% endif %}
   <a class="user-profile-name" href="{{ url('user_detail', uid=udoc._id) }}">
     {% if udoc.displayName and udoc.displayName != udoc.uname %}

packages/ui-default/templates/extra.css

@@ -1,13 +0,0 @@
-/* {% if nav_logo_dark %} */
-.nav__logo {
-    background-image: url({{nav_logo_dark}}) !important
-}
-/* {% endif %} */
-
-@media only screen and (-webkit-min-device-pixel-ratio: 1.5), only screen and (min-resolution: 1.5dppx), only screen and (min-resolution: 144dpi) {
-    /* {% if nav_logo_dark_2x %} */
-    .nav__logo, .header--mobile__domain {
-        background-image: url({{nav_logo_dark_2x}}) !important
-    }
-    /* {% endif %} */
-}

packages/ui-default/templates/layout/html5.html

@@ -26,9 +26,9 @@
   {% endblock %}
   {% if not isIE(handler.request.headers['user-agent']) %}
     <script src="{{ static_url((handler.user|default({})).theme|default('default') + '.theme.js') }}"></script>
+    <script type="text/javascript" src="{{ static_url('hydro.js') }}"></script>
   {% endif %}
   <link rel="stylesheet" media="all" href="{{ static_url((handler.user|default({})).theme|default('default') + '.theme.css') }}">
-  <link rel="stylesheet" media="all" href="{{ url('ui_extracss') }}">
   <title>{{ handler.renderTitle(page_name) }}</title>
   {% if not isIE(handler.request.headers['user-agent']) %}
   <script>
@@ -46,9 +46,6 @@
     UiContext = '{{ UiContext|json|jsesc|safe }}';
     UserContext = '{{ UserContext|json|jsesc|safe }}';
   </script>
-  <script type="text/javascript" src="{{ ('/locale/{0}.js'.format(handler.translate('__id'))) }}"></script>
-  <script type="text/javascript" src="/ui-constants.js"></script>
-  <script type="text/javascript" src="{{ static_url('hydro.js') }}"></script>
   {% endif %}
 </body>
 </html>