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feature/react-bare #1

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manuel merged 2 commits from feature/react-bare into main 2023-04-15 23:15:56 +02:00
Conversation 0 Commits 2 Files changed 19 +16453 -1
19 changed files with 16453 additions and 1 deletions
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20
.gitignore vendored Normal file
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/.idea
# dependencies
/node_modules
# testing
/coverage
# production
/build
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

1863
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<?xml version="1.0" encoding="UTF-8"?>
<module type="WEB_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$" />
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

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{
"dependencies": {
"react": "^18.0.0",
"react-dom": "^18.0.0",
"react-scripts": "^5.0.0"
},
"main": "/index.js",
"devDependencies": {
"react-scripts": "1.0.0"
},
"name": "ljg0t8",
"description": null,
"version": "0.0.0",
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
}

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<!--
manifest.json provides metadata used when your web app is added to the
homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
-->
<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
<!--
Notice the use of %PUBLIC_URL% in the tags above.
It will be replaced with the URL of the `public` folder during the build.
Only files inside the `public` folder can be referenced from the HTML.
Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
<title>A-Maze-R</title>
</head>
<body>
<div id="root"></div>
<!--
This HTML file is a template.
If you open it directly in the browser, you will see an empty page.
You can add webfonts, meta tags, or analytics to this file.
The build step will place the bundled scripts into the <body> tag.
To begin the development, run `npm start` or `yarn start`.
To create a production bundle, use `npm run build` or `yarn build`.
-->
</body>
</html>

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{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "192x192",
"type": "image/png"
}
],
"start_url": "./index.html",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}

21
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import React, {useState} from 'react';
import Maze from "./Maze";
import InputForm from "./InputForm";
export default function App() {
const [maze, setMaze] = useState({});
let title;
if (!!maze.grid) {
title = <h1>The Maze ({maze.width}x{maze.height})</h1>;
} else {
title = <span/>;
}
return (
<div>
<InputForm handleResult={setMaze}/>
{title}
<Maze labyrinth={maze}
showSolution={true}/>
</div>
);
}

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import React from 'react';
export default function Cell({spec, rowIndex, cellIndex, showSolution}) {
let classes = "cell r" + rowIndex + " c" + cellIndex;
if (spec.top) classes += " top";
if (spec.right) classes += " right";
if (spec.bottom) classes += " bottom";
if (spec.left) classes += " left";
if (spec.solution && showSolution) classes += " solution";
if (spec.user) classes += " user";
return (
<div className={classes}/>
);
}

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import React, {useState} from 'react';
import ValidatingInputNumberField from "./ValidatingInputNumberField";
export default function InputForm({handleResult}) {
const [width, setWidth] = useState(2);
const [height, setHeight] = useState(2);
const [id, setId] = useState(null);
const [status, setStatus] = useState("typing"); // "typing", "submitting"
if (status === "submitted") {
return <span/>;
}
const callAPI = () => {
let url = "https://manuel.friedli.info/labyrinth/create/json?w=" + width +
"&h=" + height;
if (!!id) {
url += "&id=" + id;
}
fetch(url)
.then(response => response.json())
.then(result => {
handleResult(result);
// FIXME doesn't update the contents of the text input field.
setId(_ => result.id);
})
.catch(reason => {
console.error("Failed to fetch maze data.", reason);
// FIXME alert is not user friendly
alert("Failed to fetch maze data: " + reason);
})
.finally(() => {
setStatus("typing");
});
};
const handleSubmit = (e) => {
e.preventDefault();
setStatus("submitting");
callAPI();
};
const validateWidthHeightInput = value => {
if (isNaN(value) || "" === value || (Math.floor(value) !== Number(value))) {
return {
valid: false,
message: "Must be an integer greater than 1.",
value
};
}
if (value < 1) {
return {
valid: false,
message: "Must be greater than 1.",
value
};
}
return {
valid: true,
value
};
};
const validateIdInput = value => {
// FIXME doesn't handle strings with characters correctly (e.g. "asdf" yields an empty value, due to "type=number").
if (isNaN(value) || ("" !== value && ((Math.floor(value) !== Number(value))))) {
return {
valid: false,
message: "Must be empty or an integer",
value
};
}
return {
valid: true,
value
}
};
return (
<form onSubmit={handleSubmit}>
<ValidatingInputNumberField id={"width"}
label={"Width"}
defaultValue={width}
constraints={{
min: 2
}}
validatorFn={validateWidthHeightInput}
disabled={status === "submitting"}
onChange={setWidth}
/><br/>
<ValidatingInputNumberField id={"height"}
label={"Height"}
defaultValue={height}
constraints={{
min: 2
}}
validatorFn={validateWidthHeightInput}
disabled={status === "submitting"}
onChange={setHeight}
/><br/>
<ValidatingInputNumberField id={"id"}
label={"ID (optional)"}
defaultValue={id}
validatorFn={validateIdInput}
disabled={status === "submitting"}
onChange={setId}
/><br/>
<button type={"submit"}
disabled={status === "submitting"
|| isNaN(width)
|| isNaN(height)
}>GO!
</button>
</form>
);
}

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import React from 'react';
import Row from "./Row";
export default function Maze({labyrinth, showSolution = false}) {
if (!labyrinth.grid) {
return <div>No valid maze.</div>
}
const maze = labyrinth.grid.map((row, rowIdx) => <Row key={"r" + rowIdx} spec={row}
index={rowIdx}
showSolution={showSolution}/>);
return (
<div className={"maze"}>
{maze}
</div>
);
}

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import React from 'react';
import Cell from "./Cell";
export default function Row({spec, index, showSolution}) {
const cells = spec.map((cell, cellIdx) => <Cell key={"c" + index + "-" + cellIdx}
spec={cell}
rowIndex={index}
cellIndex={cellIdx}
showSolution={showSolution}/>)
return (
<div className={"row"}>
{cells}
</div>
);
}

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import React, {useState} from 'react';
export default function ValidatingInputNumberField({
id,
label,
defaultValue = 0,
constraints = {},
validatorFn = (value) => {
return {valid: true, value};
},
disabled = false,
onChange = _ => {
}
}) {
const [error, setError] = useState(null);
const [value, setValue] = useState(defaultValue);
const handleValueChange = (e) => {
const value = e.target.value;
const validation = validatorFn(value);
if (!validation.valid) {
setError(validation.message);
} else {
setError(null);
onChange(validation.value);
}
setValue(validation.value);
};
let errorComponent;
if (!!error) {
errorComponent = <span>{error}</span>;
} else {
errorComponent = <span/>;
}
return (
<span>
<label htmlFor={id}>{label}: </label>
<input id={id}
type={"number"}
onChange={handleValueChange}
value={value || ""}
min={constraints.min || null}
max={constraints.max || null}
disabled={disabled}
/>
{errorComponent}
</span>
);
}

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// In production, we register a service worker to serve assets from local cache.
// This lets the app load faster on subsequent visits in production, and gives
// it offline capabilities. However, it also means that developers (and users)
// will only see deployed updates on the "N+1" visit to a page, since previously
// cached resources are updated in the background.
// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
// This link also includes instructions on opting out of this behavior.
export default function register() {
if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
window.addEventListener('load', () => {
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
navigator.serviceWorker
.register(swUrl)
.then(registration => {
// eslint-disable-next-line no-param-reassign
registration.onupdatefound = () => {
const installingWorker = registration.installing;
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
if (navigator.serviceWorker.controller) {
// At this point, the old content will have been purged and
// the fresh content will have been added to the cache.
// It's the perfect time to display a "New content is
// available; please refresh." message in your web app.
console.log('New content is available; please refresh.'); // eslint-disable-line no-console
} else {
// At this point, everything has been precached.
// It's the perfect time to display a
// "Content is cached for offline use." message.
console.log('Content is cached for offline use.'); // eslint-disable-line no-console
}
}
};
};
})
.catch(error => {
console.error('Error during service worker registration:', error);
});
});
}
}
export function unregister() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.ready.then(registration => {
registration.unregister();
});
}
}

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import React, { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import "./styles.css";
import App from "./App";
const root = createRoot(document.getElementById("root"));
root.render(
<StrictMode>
<App />
</StrictMode>
);

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{
"dependencies": {
"react": "^18.0.0",
"react-dom": "^18.0.0",
"react-scripts": "^5.0.0"
},
"main": "/index.js",
"devDependencies": {}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>A-Maze-R</title>
</head>
<body>
<div id="root"></div>
</body>
</html>

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* {
box-sizing: border-box;
}
div.maze {
display: table;
border-collapse: collapse;
}
div.row {
display: table-row;
margin: 0;
padding: 0;
}
div.cell {
display: table-cell;
border: 1px solid transparent;
height: 2em;
width: 2em;
margin: 0;
padding: 0;
}
div.cell.solution {
background-color: lightgray;
}
div.cell.top {
border-top-color: #000;
}
div.cell.right {
border-right-color: #000;
}
div.cell.bottom {
border-bottom-color: #000;
}
div.cell.left {
border-left-color: #000;
}
input:invalid {
border-color: #f00;
}
body {
font-family: sans-serif;
margin: 20px;
padding: 0;
}
h1 {
margin-top: 0;
font-size: 22px;
}
h2 {
margin-top: 0;
font-size: 20px;
}
h3 {
margin-top: 0;
font-size: 18px;
}
h4 {
margin-top: 0;
font-size: 16px;
}
h5 {
margin-top: 0;
font-size: 14px;
}
h6 {
margin-top: 0;
font-size: 12px;
}
code {
font-size: 1.2em;
}
ul {
padding-left: 20px;
}
* {
box-sizing: border-box;
}
body {
font-family: sans-serif;
margin: 20px;
padding: 0;
}
.square {
background: #fff;
border: 1px solid #999;
float: left;
font-size: 24px;
font-weight: bold;
line-height: 34px;
height: 34px;
margin-right: -1px;
margin-top: -1px;
padding: 0;
text-align: center;
width: 34px;
}
.board-row:after {
clear: both;
content: '';
display: table;
}
.status {
margin-bottom: 10px;
}
.game {
display: flex;
flex-direction: row;
}
.game-info {
margin-left: 20px;
}