Allow use CDN for static resources of syzoj itself

config-example.json

@@ -114,5 +114,9 @@
   "email_jwt_secret": "@EMAIL_JWT_SECRET@",
   "google_analytics": "UA-XXXXXXXX-X",
   "cdnjs_url": "https://cdnjs.loli.net/ajax/libs",
-  "google_fonts_url": "https://fonts.loli.net"
+  "self_cdn_url": "",
+  "google_fonts": {
+    "type": "like-google-fonts",
+    "url": "https://fonts.loli.net"
+  }
 }

views/footer.ejs

@@ -7,6 +7,6 @@
 </div>
 <script src="<%- lib('semantic-ui/2.4.1/semantic.min.js') %>"></script>
 <script src="<%- lib('Chart.js/2.7.3/Chart.bundle.min.js') %>"></script>
-<script src="/script.js?20170710"></script>
+<script src="<%- selfLib('script.js') %>?20170710"></script>
 </body>
 </html>

views/header.ejs

@@ -7,21 +7,26 @@
     <meta name="viewport" content="width=1200">
     <title><%= title %> - <%= syzoj.config.title %></title>
     <link href="<%- lib('semantic-ui/2.4.1/semantic.min.css') %>" rel="stylesheet">
-    <link href="/tomorrow.css" rel="stylesheet">
-    <link href="/mathjax.css?20181105" rel="stylesheet">
+    <link href="<%- selfLib('tomorrow.css') %>" rel="stylesheet">
+    <link href="<%- selfLib('mathjax.css') %>?20181105" rel="stylesheet">
+    <link href="<%- selfLib('style.css') %>?20181212" rel="stylesheet">
     <link href="<%- lib('KaTeX/0.10.0/katex.min.css') %>" rel="stylesheet">
     <link href="<%- lib('morris.js/0.5.1/morris.css') %>" rel="stylesheet">
-    <link href="/style.css?20181212" rel="stylesheet">
-    <% if (useLocalLibs || !syzoj.config.google_fonts_url) { %>
+    <% if (useLocalLibs || !syzoj.config.google_fonts || !syzoj.config.google_fonts.url || !['like-google-fonts', 'like-local'].includes(syzoj.config.google_fonts.type)) { %>
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'fira-mono.css']) %>" rel="stylesheet">
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'lato.css']) %>" rel="stylesheet">
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'open-sans.css']) %>" rel="stylesheet">
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'exo-2.css']) %>" rel="stylesheet">
+    <% } else if (syzoj.config.google_fonts.type === 'like-local') { %>
+      <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/fira-mono.css" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/lato.css" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/open-sans.css" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/exo-2.css" rel="stylesheet">
     <% } else { %>
-      <link href="<%- syzoj.config.google_fonts_url %>/css?family=Fira+Mono" rel="stylesheet">
-      <link href="<%- syzoj.config.google_fonts_url %>/css?family=Lato:400,700,400italic,700italic&subset=latin" rel="stylesheet">
-      <link href="<%- syzoj.config.google_fonts_url %>/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i,800,800i&amp;subset=latin-ext" rel="stylesheet">
-      <link href="<%- syzoj.config.google_fonts_url %>/css?family=Exo+2:600" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/css?family=Fira+Mono" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/css?family=Lato:400,700,400italic,700italic&subset=latin" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i,800,800i&amp;subset=latin-ext" rel="stylesheet">
+      <link href="<%- syzoj.config.google_fonts.url %>/css?family=Exo+2:600" rel="stylesheet">
     <% } %>
     <script src="<%- lib('jquery/3.3.1/jquery.min.js') %>"></script>
     <% if (syzoj.config.google_analytics && syzoj.config.google_analytics !== 'UA-XXXXXXXX-X') { %>

views/util.ejs

@@ -74,4 +74,12 @@ this.lib = uri => {
   }
 }
 
+this.selfLib = uri => {
+  if (useLocalLibs || !syzoj.config.self_cdn_url) {
+    return syzoj.utils.makeUrl(['self', uri]);
+  } else {
+    return syzoj.config.self_cdn_url + '/' + uri;
+  }
+}
+
 %>