coding-horror · coding-horror · Mar 18, 2022 · Mar 12, 2022 · Mar 17, 2022 · Mar 17, 2022
diff --git a/.nojekyll b/.nojekyll
diff --git a/00_Utilities/build-index.js b/00_Utilities/build-index.js
@@ -0,0 +1,135 @@
+#!/usr/bin/env node
+/**
+ * This script creates an "index.html" file in the root of the directory.
+ * 
+ * Call this from the root of the project with 
+ *  `node ./00_Utilities/build-index.js`
+ * 
+ * @author Alexander Wunschik <https://github.com/mojoaxel>
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const TITLE = 'BASIC Computer Games';
+const JAVASCRIPT_FOLDER = 'javascript';
+const IGNORE_FOLDERS_START_WITH = ['.', '00_', 'buildJvm', 'Sudoku'];
+
+function createGameLinks(game) {
+	if (game.htmlFiles.length > 1) {
+		const entries = game.htmlFiles.map(htmlFile => {
+			const name = path.basename(htmlFile).replace('.html', '');
+			return `
+				<li>
+					<a href="${htmlFile}">${name}</a>
+				</li>
+			`;
+		});
+		return `
+			<li>
+				<span>${game.name}</span>
+				<ul>${entries.map(e => `\t\t\t${e}`).join('\n')}</ul>
+			</li>
+		`;
+	} else {
+		return `<li><a href="${game.htmlFiles}">${game.name}</a></li>`;
+	}
+}
+
+function createIndexHtml(title, games) {
+	const listEntries = games.map(game => 
+		createGameLinks(game)
+	).map(entry => `\t\t\t${entry}`).join('\n');
+
+	const head = `
+		<head>
+			<meta charset="UTF-8">
+			<title>${title}</title>
+			<link rel="stylesheet" href="./00_Utilities/javascript/style_terminal.css" />
+		</head>
+	`;
+
+	const body = `
+		<body>
+			<article id="output">
+				<header>
+					<h1>${title}</h1>
+				</header>
+				<main>
+					<ul>
+						${listEntries}
+					</ul>
+				</main>
+			</article>
+		</body>
+	`;
+
+	return `
+		<!DOCTYPE html>
+		<html lang="en">
+		${head}
+		${body}
+		</html>
+	`.trim().replace(/\s\s+/g, '');
+}
+
+function findHtmlFilesInFolder(folder) {
+	// filter folders that do not include a subfolder called "javascript"
+	const hasJavascript = fs.existsSync(`${folder}/${JAVASCRIPT_FOLDER}`);
+	if (!hasJavascript) {
+		throw new Error(`Game "${folder}" is missing a javascript implementation`);
+	}
+
+	// get all files in the javascript folder
+	const files = fs.readdirSync(`${folder}/${JAVASCRIPT_FOLDER}`);
+
+	// filter files only allow .html files
+	const htmlFiles = files.filter(file => file.endsWith('.html'));
+
+	if (htmlFiles.length == 0) {
+		throw new Error(`Game "${folder}" is missing a html file in the "${folder}/${JAVASCRIPT_FOLDER}" folder`);
+	}
+
+	return htmlFiles.map(htmlFile => path.join(folder, JAVASCRIPT_FOLDER, htmlFile));
+}
+
+function main() {
+	// Get the list of all folders in the current director
+	let folders = fs.readdirSync(process.cwd());
+
+	// filter files only allow folders
+	folders = folders.filter(folder => fs.statSync(folder).isDirectory());
+
+	// filter out the folders that start with a dot or 00_
+	folders = folders.filter(folder => {
+		return !IGNORE_FOLDERS_START_WITH.some(ignore => folder.startsWith(ignore));
+	});
+
+	// sort the folders alphabetically (by number)
+	folders = folders.sort();
+
+	// get name and javascript file from folder
+	const games = folders.map(folder => {
+		const name = folder.replace('_', ' ');
+		let htmlFiles;
+
+		try {
+			htmlFiles = findHtmlFilesInFolder(folder);
+		} catch (error) {
+			console.warn(`Game "${name}" is missing a javascript implementation: ${error.message}`);
+			return null;
+		}
+
+		return {
+			name,
+			htmlFiles
+		}
+	}).filter(game => game !== null);
+
+	// create a index.html file with a list of all games
+	const htmlContent = createIndexHtml(TITLE, games);
+	fs.writeFileSync('index.html', htmlContent);
+	console.log(`index.html successfully created!`);
+}
+
+main();