From b6beb5f02e8c291f2b5f2bc7d0c15d0955336c32 Mon Sep 17 00:00:00 2001
From: Jan Tuomi <jans.tuomi@gmail.com>
Date: Fri, 2 Jul 2021 11:19:25 +0300
Subject: Implement research papers

---
 frontend/components/Marquees/Marquee.module.css | 38 +++++++++++++++++++++++++
 frontend/components/Marquees/Marquee.tsx        | 20 +++++++++++++
 frontend/components/Marquees/Marquees.tsx       | 35 +++++++++++++++++++++++
 frontend/pages/index.tsx                        | 25 ++++++++--------
 frontend/shared-types.ts                        |  5 ++++
 frontend/styles/Home.module.css                 |  1 +
 6 files changed, 111 insertions(+), 13 deletions(-)
 create mode 100644 frontend/components/Marquees/Marquee.module.css
 create mode 100644 frontend/components/Marquees/Marquee.tsx
 create mode 100644 frontend/components/Marquees/Marquees.tsx

(limited to 'frontend')

diff --git a/frontend/components/Marquees/Marquee.module.css b/frontend/components/Marquees/Marquee.module.css
new file mode 100644
index 0000000..0fb8ece
--- /dev/null
+++ b/frontend/components/Marquees/Marquee.module.css
@@ -0,0 +1,38 @@
+.marqueeContainer {
+  height: 100vh;
+  overflow: hidden;
+  position: relative;
+  background: #fefefe;
+  color: #333;
+  z-index: 10;
+}
+
+.marquee {
+  position: absolute;
+  width: 100%;
+  height: 50px;
+  margin: 0;
+  line-height: 50px;
+  text-align: center;
+  transform: translateX(100%);
+  animation: scroll-left 10s linear infinite;
+  text-decoration: underline;
+}
+
+@keyframes scroll-left {
+  0% {
+      transform: translateX(100%);
+  }
+  100% {
+      transform: translateX(-100%);
+  }
+}
+
+@keyframes scroll-right {
+  0% {
+      transform: translateX(-100%);
+  }
+  100% {
+      transform: translateX(100%);
+  }
+}
diff --git a/frontend/components/Marquees/Marquee.tsx b/frontend/components/Marquees/Marquee.tsx
new file mode 100644
index 0000000..4cc41a2
--- /dev/null
+++ b/frontend/components/Marquees/Marquee.tsx
@@ -0,0 +1,20 @@
+import React, { ReactElement } from "react";
+import styles from "./Marquee.module.css";
+
+interface Props {
+  delayShorthand: string;
+  topShorthand: string;
+  url: string;
+  text: string;
+  direction: "left" | "right";
+}
+
+const Marquee = ({ delayShorthand, url, text, topShorthand, direction }: Props): ReactElement => (
+    <a className={styles.marquee} href={url} style={{
+        animationDelay: delayShorthand,
+        top: topShorthand,
+        animationDirection: direction === "left" ? "normal" : "reverse",
+    }}>{text}</a>
+);
+
+export default Marquee;
diff --git a/frontend/components/Marquees/Marquees.tsx b/frontend/components/Marquees/Marquees.tsx
new file mode 100644
index 0000000..04747fb
--- /dev/null
+++ b/frontend/components/Marquees/Marquees.tsx
@@ -0,0 +1,35 @@
+import React, { ReactElement } from "react";
+import styles from "./Marquee.module.css";
+import Marquee from "./Marquee";
+
+export interface MarqueeLink {
+  title: string;
+  url: string;
+}
+
+interface Props {
+    links: MarqueeLink[]
+}
+
+const getRandomDelayBetween = (start: number, end: number) => `${Math.random() * (end - start) + start}s`;
+const getTopFromIndex = (index: number, n: number) => `calc((100% - 50px) * (${index} / ${n - 1}))`;
+const getRandomAnimationName = () => Math.random() > 0.5 ? "right" : "left";
+
+const Marquees = ({ links }: Props): ReactElement => {
+    return (
+        <div className={styles.marqueeContainer}>
+            { links.map((link, idx) => (
+                <Marquee
+                    key={idx}
+                    url={link.url}
+                    text={link.title}
+                    delayShorthand={getRandomDelayBetween(0, 9)}
+                    topShorthand={getTopFromIndex(idx, links.length)}
+                    direction={getRandomAnimationName()}
+                />
+            ))}
+        </div>
+    );
+};
+
+export default Marquees;
diff --git a/frontend/pages/index.tsx b/frontend/pages/index.tsx
index 58b3b56..6193488 100644
--- a/frontend/pages/index.tsx
+++ b/frontend/pages/index.tsx
@@ -7,19 +7,9 @@ import styles from "../styles/Home.module.css";
 
 const socket = io(config.backendUrl);
 
-const mockData: MarqueeLink[] = [
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-    { title: "Foobar of Foos and Bars", url: "https://example.com" },
-];
-
 const Home = (): ReactElement => {
     const [value, setValue] = useState<number | undefined>(undefined);
+    const [papers, setPapers] = useState<MarqueeLink[]>([]);
 
     useEffect(() => {
         socket.on("connect", () => {
@@ -29,11 +19,20 @@ const Home = (): ReactElement => {
             console.log("disconnected, reason:", reason);
         });
         socket.on("update", (arg: number) => {
-            console.log("update:", arg);
             setValue(arg);
         });
     });
 
+    useEffect(() => {
+        async function fetchPapers() {
+            const resp = await fetch(`${config.backendUrl}/api/papers`);
+            const data = await resp.json();
+
+            setPapers(data);
+        }
+        fetchPapers();
+    }, []);
+
     const increment = () => {
         socket.emit("increment");
     };
@@ -57,7 +56,7 @@ const Home = (): ReactElement => {
                     <img src="/tomi_sq.png" alt="" />
                 </div>
             </button>
-            <Marquees links={mockData} />
+            <Marquees links={papers} />
         </div>
     );
 };
diff --git a/frontend/shared-types.ts b/frontend/shared-types.ts
index 51f3281..f68b896 100644
--- a/frontend/shared-types.ts
+++ b/frontend/shared-types.ts
@@ -1,3 +1,8 @@
 export interface ValueRecord {
   value: number;
 }
+
+export interface Paper {
+  title: string;
+  url: string;
+}
diff --git a/frontend/styles/Home.module.css b/frontend/styles/Home.module.css
index 6f43b54..814ebba 100644
--- a/frontend/styles/Home.module.css
+++ b/frontend/styles/Home.module.css
@@ -19,6 +19,7 @@
   top: 50%;
   margin-left: -40vw;
   margin-top: -40vw;
+  z-index: 20;
 }
 
 .btnInner {
-- 
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