From 8ead0d00f5e5e81673d1647d79929138c49604da Mon Sep 17 00:00:00 2001
From: UnknownRori <68576836+UnknownRori@users.noreply.github.com>
Date: Sun, 27 Aug 2023 17:51:49 +0700
Subject: [PATCH] =?UTF-8?q?=F0=9F=9A=80=20Implement=20Lazy=20Loading=20for?=
 =?UTF-8?q?=20`Router`?=
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---
 src/App.tsx                                 |  8 ++--
 src/components/animation/LoadingSpinner.tsx | 10 +++++
 src/components/navigation/RouterView.tsx    | 42 +++++++++++++++++++++
 src/router/router.tsx                       | 10 +++--
 4 files changed, 63 insertions(+), 7 deletions(-)
 create mode 100644 src/components/animation/LoadingSpinner.tsx
 create mode 100644 src/components/navigation/RouterView.tsx

diff --git a/src/App.tsx b/src/App.tsx
index 5c9b4c4..8002e1c 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -2,6 +2,7 @@ import Background from "@/components/animation/Background";
 import Footer from '@/components/navigation/Footer';
 import Navbar from '@/components/navigation/Navbar';
 import Sidebar from '@/components/navigation/Sidebar';
+import RouterView from "@/components/navigation/RouterView";
 
 import useRoute, { RouterContext } from "@/hooks/useRoute";
 import router from "@/router/router";
@@ -16,10 +17,11 @@ export default function App() {
                 <RouterContext.Provider value={changePage}>
                     <Navbar />
                 </RouterContext.Provider>
+
                 <Sidebar />
-                <>
-                    {currentPage}
-                </>
+
+                <RouterView page={currentPage} />
+
                 <Footer />
             </div>
         </>
diff --git a/src/components/animation/LoadingSpinner.tsx b/src/components/animation/LoadingSpinner.tsx
new file mode 100644
index 0000000..1244080
--- /dev/null
+++ b/src/components/animation/LoadingSpinner.tsx
@@ -0,0 +1,10 @@
+import { useEffect, useState } from 'react';
+
+export default function() {
+    return (
+        <svg aria-hidden="true" className="w-14 h-14 mr-2 animate-spin text-gray-800 fill-slate-600" viewBox="0 0 100 101" fill="none" xmlns="http://www.w3.org/2000/svg">
+            <path d="M100 50.5908C100 78.2051 77.6142 100.591 50 100.591C22.3858 100.591 0 78.2051 0 50.5908C0 22.9766 22.3858 0.59082 50 0.59082C77.6142 0.59082 100 22.9766 100 50.5908ZM9.08144 50.5908C9.08144 73.1895 27.4013 91.5094 50 91.5094C72.5987 91.5094 90.9186 73.1895 90.9186 50.5908C90.9186 27.9921 72.5987 9.67226 50 9.67226C27.4013 9.67226 9.08144 27.9921 9.08144 50.5908Z" fill="currentColor" />
+            <path d="M93.9676 39.0409C96.393 38.4038 97.8624 35.9116 97.0079 33.5539C95.2932 28.8227 92.871 24.3692 89.8167 20.348C85.8452 15.1192 80.8826 10.7238 75.2124 7.41289C69.5422 4.10194 63.2754 1.94025 56.7698 1.05124C51.7666 0.367541 46.6976 0.446843 41.7345 1.27873C39.2613 1.69328 37.813 4.19778 38.4501 6.62326C39.0873 9.04874 41.5694 10.4717 44.0505 10.1071C47.8511 9.54855 51.7191 9.52689 55.5402 10.0491C60.8642 10.7766 65.9928 12.5457 70.6331 15.2552C75.2735 17.9648 79.3347 21.5619 82.5849 25.841C84.9175 28.9121 86.7997 32.2913 88.1811 35.8758C89.083 38.2158 91.5421 39.6781 93.9676 39.0409Z" fill="currentFill" />
+        </svg>
+    )
+}
\ No newline at end of file
diff --git a/src/components/navigation/RouterView.tsx b/src/components/navigation/RouterView.tsx
new file mode 100644
index 0000000..14ed9e1
--- /dev/null
+++ b/src/components/navigation/RouterView.tsx
@@ -0,0 +1,42 @@
+import { Suspense, useEffect, useState } from 'react';
+
+import LoadingSpinner from '@/components/animation/LoadingSpinner';
+
+function FallbackView() {
+    const MAXIMUM_DOT = 3;
+
+    const [count, setCount] = useState(0);
+
+    useEffect(() => {
+        const interval = setInterval(() => {
+            if (count < MAXIMUM_DOT) {
+                setCount(count + 1);
+            } else {
+                setCount(0);
+            }
+        }, 1000);
+
+        return () => {
+            clearInterval(interval);
+        }
+    })
+
+    return (
+        <div id="profile" className="h-screen w-screen flex justify-center items-center">
+            <div className="flex flex-col">
+                <div role="status" className="flex flex-col justify-center items-center">
+                    <LoadingSpinner />
+                    <span className="text-2xl tracking-wider">Please wait warmly{".".repeat(count)}</span>
+                </div>
+            </div>
+        </div>
+    )
+}
+
+export default function(props: { page: JSX.Element }) {
+    return (
+        <Suspense fallback={<FallbackView />}>
+            {props.page}
+        </Suspense>
+    );
+}
\ No newline at end of file
diff --git a/src/router/router.tsx b/src/router/router.tsx
index 3fef683..8ffc8a1 100644
--- a/src/router/router.tsx
+++ b/src/router/router.tsx
@@ -1,7 +1,9 @@
-import NotFound from "@/page/404";
-import AboutMePage from "@/page/AboutMe";
-import MyProfilePage from '@/page/MyProfile';
-import MyProjectsPage from "@/page/MyProjects";
+import React from 'react';
+
+const NotFound = React.lazy(() => import("@/page/404"));
+const AboutMePage = React.lazy(() => import("@/page/AboutMe"));
+const MyProfilePage = React.lazy(() => import("@/page/MyProfile"));
+const MyProjectsPage = React.lazy(() => import("@/page/MyProjects"));
 
 /**
  * A definition for my custom router hook