FEAT Using a library for infinite scroll.

This is better.  Always nice to let the professionals do all the hard
lifting for ya when you're pressed for time.

Also: Incorporated a pretty nice little modal pop-up.  Styling sucks (at
the moment), but I can fix that later.

package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@egjs/react-infinitegrid": "^3.0.5",
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
     "@testing-library/user-event": "^7.1.2",
@@ -13,6 +14,7 @@
     "node-sass": "^4.14.1",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
+    "react-modal": "^3.11.2",
     "react-scripts": "3.4.3",
     "sass": "^1.26.10",
     "typescript": "^3.9.3"
@@ -38,6 +40,7 @@
     ]
   },
   "devDependencies": {
+    "@types/react-modal": "^3.10.6",
     "http-server": "^0.12.3"
   }
 }

src/App.scss

@@ -9,6 +9,21 @@ body {
 	font-family: "Marcellus";
 }
 
+.current-card {
+	background: repeat url("images/elder_scrolling_bg.png") #0c0c0c;
+	color: #f8f8f8;
+
+}
+
+.fullcard tr td {
+	padding-right: 2rem;
+}
+
+.fullcard tr td:nth-child(3) {
+	padding-left: 8rem;
+}
+
+
 body * {
 	font-family: "Marcellus";
 }
@@ -50,32 +65,29 @@ header {
 	}
 }
 	
-.cardbox {
+.card {
-	display: flex;
+	width: 192px;
-	flex-wrap: wrap;
+	height: 540px;
-	flex-direction: row;
+	border: 1px solid #707c80;
-	font-size: 1.4rem;
+	border-radius: 8px;
-	justify-content: space-between;
+	padding: 0.5rem;
-	align-content: space-between;
+	margin: 0.5rem;
+	
+	img {
+		height: 290px;
+		width: 175px;
+	}
+	
+	.card-text {
+		line-height: 1.4;
+		font-size: 1.4rem;
+	}
 
-	.card {
+	.content table td {
-		width: 192px;
+		font-size: 1.4rem;
-		border: 1px solid #707c80;
-		border-radius: 8px;
-		padding: 0.5rem;
-		margin: 0.5rem;
-		
-		img {
-			height: 290px;
-			width: 175px;
-		}
-
-		.card-text {
-			line-height: 1.4;
-		}
 	}
 }
-
+ 
 .lds-spinner-container {
 	display: flex;
 	justify-content: center;

src/cards/Card.tsx

@@ -1,9 +1,19 @@
 import * as React from "react";
 import { CardProps } from "./types";
 
-export const Card = ({ card }: { card: CardProps }) => {
+export const Card = ({
+  card,
+  onClick
+}: {
+  card: CardProps;
+  onClick: Function | null;
+}) => {
   return (
-    <div className="card" key="{idx}">
+    <div
+      className="card"
+      key="{idx}"
+      onClick={_event => onClick && onClick(card.id)}
+    >
       <img src={card.imageUrl} alt={card.name} />
       <div className="content">
         <h4>{card.name}</h4>
@@ -28,4 +38,3 @@ export const Card = ({ card }: { card: CardProps }) => {
     </div>
   );
 };
-

src/cards/Cards.tsx

@@ -2,7 +2,9 @@ import * as React from "react";
 import { useState, useEffect, useRef } from "react";
 import { Loading } from "./Loading";
 import { Card } from "./Card";
-import { useInfiniteScroll } from "./infiniteScroll";
+import { JustifiedLayout, GridLayout } from "@egjs/react-infinitegrid";
+import ReactModal from "react-modal";
+import { FullCard, fullcardStyles } from "./FullCard";
 import {
   CardProps,
   CardRequestProps,
@@ -16,54 +18,85 @@ const firstUrl = `https://api.elderscrollslegends.io/v1/cards?pageSize=${PAGE_SI
 
 const emptyCards: CardState = {
   cards: [],
-  next: firstUrl
+  next: firstUrl,
+  maxCards: -1
 };
 
 export const Cards = () => {
   const [cards, setCards]: CardStateHandler = useState(emptyCards);
-  const [cardPage, setCardPage]: [string | null, Function] = useState(null);
   const [loading, setLoading]: [boolean, Function] = useState(false);
+  const [currentCard, setCurrentCard]: [CardProps | null, Function] = useState(
+    null
+  );
 
-  const getNextPage = () => {
+  const loadItems = () => {
-    setCardPage(cards.next);
+    if (cards.next === null || cards.cards.length === cards.maxCards) {
-    setLoading(true);
+      return;
-  };
-
-  let pageBottomRef = useRef(null);
-  useInfiniteScroll(pageBottomRef, getNextPage);
-
-  const fetchMoreCards = async () => {
-    if (cards.next === null || cardPage === null) {
-      return cards;
     }
 
-    const request = new Request(cardPage!);
+    setLoading(true);
-    const response = await fetch(request);
+    const request = new Request(cards.next);
-    const data: CardRequestProps = await response.json();
+    fetch(request)
-    setCards({
+      .then(response => response.json())
-      cards: cards.cards.concat(data.cards),
+      .then((data: CardRequestProps) => {
-      next: data._links && data._links.next ? data._links.next : null
+        setCards({
-    });
+          cards: [...cards.cards, ...data.cards],
-    setLoading(false);
+          next: data._links && data._links.next ? data._links.next : null,
+          maxcards: data._totalCount
+        });
+        setLoading(false);
+      });
   };
 
-  if (cards.next && cardPage === null) {
+  const loadMoreCards = (options: any) => {
-    getNextPage();
+    if (options.startLoading !== null) {
-  }
+      options.startLoading();
+    }
+    loadItems();
+  };
 
-  useEffect(() => {
+  const onLayoutComplete = (options: any) => {
-    fetchMoreCards();
+    !options.isLayout && options.endLoading();
-  }, [cardPage]);
+  };
+
+  const handleCloseCard = () => {
+    setCurrentCard(null);
+  };
+
+  const handleOpenCard = (id: string) => {
+    const card = cards.cards.find(card => card.id === id);
+    if (card) {
+      setCurrentCard(card);
+    }
+  };
 
   return (
     <div className="container">
-      <div className="cardbox">
+      <ReactModal
+        isOpen={currentCard !== null}
+        style={fullcardStyles}
+        contentLabel=""
+        onRequestClose={handleCloseCard}
+      >
+        <FullCard card={currentCard} />
+      </ReactModal>
+      <GridLayout
+        options={{
+          isConstantSize: true,
+          isEqualSize: true,
+          transitionDuration: 0.2
+        }}
+        layoutOptions={{
+          margin: 10
+        }}
+        onAppend={loadMoreCards}
+        onLayoutComplete={onLayoutComplete}
+      >
         {cards.cards.map((card: CardProps, count: number) => (
-          <Card card={card} key={count} />
+          <Card card={card} key={count} onClick={handleOpenCard} />
         ))}
-      </div>
+      </GridLayout>
-      {loading && <Loading />}
+      {loading ? <Loading /> : ""}
-      <div id="page-bottom" ref={pageBottomRef} />
     </div>
   );
 };

src/cards/FullCard.tsx

@@ -0,0 +1,111 @@
+import * as React from "react";
+import { CardProps } from "./types";
+
+export const fullcardStyles = {
+  content: {
+    backgroundColor: "#0c0c0c",
+    color: "#f8f8f8"
+  }
+};
+
+export const FullCard = ({ card }: { card: CardProps | null }) => {
+  if (card === null) {
+    return <></>;
+  }
+
+  return (
+    <div className="fullcard">
+      <img src={card.imageUrl} alt={card.name} />
+      <div className="content">
+        <h4>{card.name}</h4>
+        <p className="card-text">{card.text}</p>
+        <table>
+          <tbody>
+            <tr>
+              <td>
+                <strong>Type</strong>
+              </td>
+              <td>{card.type}</td>
+              <td>
+                <strong>Cost</strong>
+              </td>
+              <td>{card.cost}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Subtypes</strong>
+              </td>
+              <td>{card.subtypes.join(", ")}</td>
+              <td>
+                <strong>Power</strong>
+              </td>
+              <td>{card.power}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Rarity</strong>
+              </td>
+              <td>{card.rarity}</td>
+              <td>
+                <strong>Health</strong>
+              </td>
+              <td>{card.health}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Set</strong>
+              </td>
+              <td>{card.set.name}</td>
+              <td>
+                <strong>Soul Summon</strong>
+              </td>
+              <td>{card.soulSummon}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Attributes</strong>
+              </td>
+              <td>{card.attributes.join(", ")}</td>
+              <td>
+                <strong>Soul Trap</strong>
+              </td>
+              <td>{card.soulTrap}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Keywords</strong>
+              </td>
+              <td>{card.keywords}</td>
+              <td />
+            </tr>
+          </tbody>
+        </table>
+
+        <table>
+          <tbody>
+            <tr>
+              <td>
+                <strong>Set Name:</strong>
+              </td>
+              <td>{card.set.name}</td>
+            </tr>
+            <tr>
+              <td>
+                <strong>Type:</strong>
+              </td>
+              <td>{card.type}</td>
+            </tr>
+          </tbody>
+        </table>
+        {card.collectible ? <p>This card is considered collectible.</p> : ""}
+        {card.unique ? (
+          <p>
+            This card is unique. Unique cards may only be used once per deck.
+          </p>
+        ) : (
+          ""
+        )}
+      </div>
+    </div>
+  );
+};

src/cards/infiniteScroll.ts

@@ -1,33 +0,0 @@
-import * as React from "react";
-import { useEffect, useCallback } from "react";
-
-// From the Smashing Magazine article, 
-// https://www.smashingmagazine.com/2020/03/infinite-scroll-lazy-image-loading-react/
-
-// As this is new to me, I'm going to try to explain it;
-// IntersectionObserver takes a callback to be called when it's
-// triggred.  It's trigged when the node it's been asked to observe
-// changes its relationship with another object or, without a
-// specified object, with the viewport.  When the `intersectionRatio`
-// exceed zero, it is _intersecting_ the viewport, i.e. it is now
-// visible.
-
-// useCallback is a memoizer; it only updates the contents of the
-// function its wrapped if the included function changes, which
-// it shouldn't.  
-
-export const useInfiniteScroll = (scrollRef: React.RefObject<HTMLElement>, stateUpdate: Function) => {
-  const scrollObserver = (node: HTMLElement) => {
-    new IntersectionObserver(entries => {
-	  if (entries.some(en => en.intersectionRatio > 0)) {
-        stateUpdate();
-      }
-    }).observe(node);
-  };
-
-  useEffect(() => {
-    if (scrollRef.current) {
-      scrollObserver(scrollRef.current);
-    }
-  }, [scrollObserver, scrollRef]);
-}

src/cards/types.ts

@@ -9,11 +9,14 @@ export interface CardProps {
   rarity: string;
   type: string;
   cost: number;
+  power: number;
+  health: number;
   set: SetProps;
   collectible: boolean;
   soulSummon: number;
   soulTrap: number;
   text: string;
+  subtypes: string[];
   attributes: string[];
   keywords: string[];
   unique: boolean;
@@ -33,11 +36,10 @@ export interface CardRequestProps {
   _totalCount: number;
 }
 
-
 export interface CardState {
   cards: CardProps[];
   next: string | null;
+  maxCards: number;
 }
 
 export type CardStateHandler = [CardState, Function];
-

yarn.lock

@@ -1166,6 +1166,40 @@
   resolved "https://registry.yarnpkg.com/@csstools/normalize.css/-/normalize.css-10.1.0.tgz#f0950bba18819512d42f7197e56c518aa491cf18"
   integrity sha512-ij4wRiunFfaJxjB0BdrYHIH8FxBJpOwNPhhAcunlmPdXudL1WQV1qoP9un6JsEBAgQH+7UXyyjh0g7jTxXK6tg==
 
+"@egjs/component@^2.1.2":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/@egjs/component/-/component-2.1.2.tgz#c466a0a6fc6ba2d479814dcbe6ee4643c25a2e5b"
+  integrity sha512-7tnPiqxbSZ0porzlm0+/O3qZdanMj0zOq0sb17wQXuaRG49XKKKJaO+SacGnZDqf308N5hzJ0m9fZ4+j+VBvXA==
+
+"@egjs/infinitegrid@^3.6.3":
+  version "3.6.3"
+  resolved "https://registry.yarnpkg.com/@egjs/infinitegrid/-/infinitegrid-3.6.3.tgz#f12f60b4d7d983a6cc0371735df69991101618cc"
+  integrity sha512-GELg3eeOjIvk6DkUB61sab2eyV8yJHB2npR7mHmp0rjGf3nJoEBR6A1FqjIrAtT+NjseBxTP2EqYRyI9CwhrIA==
+  dependencies:
+    "@egjs/component" "^2.1.2"
+    "@egjs/lazyloaded" "0.0.2"
+    "@egjs/list-differ" "^1.0.0"
+
+"@egjs/lazyloaded@0.0.2":
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/@egjs/lazyloaded/-/lazyloaded-0.0.2.tgz#1658a2188239e1c5e9dee71734830bcca6625388"
+  integrity sha512-UWgJCDHxsEP/sF+ztwl8F79rP1RHmlwG5ur0fFUT6RgaqKN6aQTnuYm9G/MQB48mWpw/tsY80Ha7xhvhryl+FA==
+  dependencies:
+    "@egjs/component" "^2.1.2"
+
+"@egjs/list-differ@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@egjs/list-differ/-/list-differ-1.0.0.tgz#2277aff52e3e4bd9318d5c30ffc3ba3b6216f05e"
+  integrity sha512-HsbMKc0ZAQH+EUeCmI/2PvTYSybmkaWwakU8QGDYYgMVIg9BQ5sM0A0Nnombjxo2+JzXHxmH+jw//yGX+y6GYw==
+
+"@egjs/react-infinitegrid@^3.0.5":
+  version "3.0.5"
+  resolved "https://registry.yarnpkg.com/@egjs/react-infinitegrid/-/react-infinitegrid-3.0.5.tgz#be3759b219c67d7f8e487a2857ccd7d453949b26"
+  integrity sha512-Lf90xlCuThKeg9JfZEd9gdn4a5WgHaL/DmsiS/qWe3dUs7XmEolvfh3tzCP6j8APt6ezQsblr0q/DpUnG/7xkg==
+  dependencies:
+    "@egjs/infinitegrid" "^3.6.3"
+    "@egjs/list-differ" "^1.0.0"
+
 "@hapi/address@2.x.x":
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/@hapi/address/-/address-2.1.4.tgz#5d67ed43f3fd41a69d4b9ff7b56e7c0d1d0a81e5"
@@ -1671,6 +1705,13 @@
   dependencies:
     "@types/react" "*"
 
+"@types/react-modal@^3.10.6":
+  version "3.10.6"
+  resolved "https://registry.yarnpkg.com/@types/react-modal/-/react-modal-3.10.6.tgz#76717220f32bc72769190692147814a540053c7e"
+  integrity sha512-XpshhwVYir1TRZ2HS5EfmNotJjB8UEC2IkT3omNtiQzROOXSzVLz5xsjwEpACP8U+PctkpfZepX+WT5oDf0a9g==
+  dependencies:
+    "@types/react" "*"
+
 "@types/react@*", "@types/react@^16.9.49":
   version "16.9.49"
   resolved "https://registry.yarnpkg.com/@types/react/-/react-16.9.49.tgz#09db021cf8089aba0cdb12a49f8021a69cce4872"
@@ -4528,6 +4569,11 @@ execa@^1.0.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
+exenv@^1.2.0:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/exenv/-/exenv-1.2.2.tgz#2ae78e85d9894158670b03d47bec1f03bd91bb9d"
+  integrity sha1-KueOhdmJQVhnCwPUe+wfA72Ru50=
+
 exit@^0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
@@ -8856,7 +8902,7 @@ prompts@^2.0.1:
     kleur "^3.0.3"
     sisteransi "^1.0.4"
 
-prop-types@^15.6.2, prop-types@^15.7.2:
+prop-types@^15.5.10, prop-types@^15.6.2, prop-types@^15.7.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
@@ -9082,6 +9128,21 @@ react-is@^16.12.0, react-is@^16.8.1, react-is@^16.8.4:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
 
+react-lifecycles-compat@^3.0.0:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
+  integrity sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA==
+
+react-modal@^3.11.2:
+  version "3.11.2"
+  resolved "https://registry.yarnpkg.com/react-modal/-/react-modal-3.11.2.tgz#bad911976d4add31aa30dba8a41d11e21c4ac8a4"
+  integrity sha512-o8gvvCOFaG1T7W6JUvsYjRjMVToLZgLIsi5kdhFIQCtHxDkA47LznX62j+l6YQkpXDbvQegsDyxe/+JJsFQN7w==
+  dependencies:
+    exenv "^1.2.0"
+    prop-types "^15.5.10"
+    react-lifecycles-compat "^3.0.0"
+    warning "^4.0.3"
+
 react-scripts@3.4.3:
   version "3.4.3"
   resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-3.4.3.tgz#21de5eb93de41ee92cd0b85b0e1298d0bb2e6c51"
@@ -10990,6 +11051,13 @@ walker@^1.0.7, walker@~1.0.5:
   dependencies:
     makeerror "1.0.x"
 
+warning@^4.0.3:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/warning/-/warning-4.0.3.tgz#16e9e077eb8a86d6af7d64aa1e05fd85b4678ca3"
+  integrity sha512-rpJyN222KWIvHJ/F53XSZv0Zl/accqHR8et1kpaMTD/fLCRxtV8iX8czMzY7sVZupTI3zcUTg8eycS2kNF9l6w==
+  dependencies:
+    loose-envify "^1.0.0"
+
 watchpack-chokidar2@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/watchpack-chokidar2/-/watchpack-chokidar2-2.0.0.tgz#9948a1866cbbd6cb824dea13a7ed691f6c8ddff0"