Added WIP website

.eslintignore

@@ -0,0 +1,13 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+
+# Ignore files for PNPM, NPM and YARN
+pnpm-lock.yaml
+package-lock.json
+yarn.lock

.eslintrc.cjs

@@ -0,0 +1,20 @@
+module.exports = {
+	root: true,
+	parser: '@typescript-eslint/parser',
+	extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended', 'prettier'],
+	plugins: ['svelte3', '@typescript-eslint'],
+	ignorePatterns: ['*.cjs'],
+	overrides: [{ files: ['*.svelte'], processor: 'svelte3/svelte3' }],
+	settings: {
+		'svelte3/typescript': () => require('typescript')
+	},
+	parserOptions: {
+		sourceType: 'module',
+		ecmaVersion: 2020
+	},
+	env: {
+		browser: true,
+		es2017: true,
+		node: true
+	}
+};

.gitignore

@@ -0,0 +1,12 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+.vercel
+.output
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*

.idea/workspace.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="553038dc-ba96-4d5d-be6c-80b0d07ef67b" name="Changes" comment="" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ComposerSettings">
+    <execution />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="TypeScript File" />
+      </list>
+    </option>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="MarkdownSettingsMigration">
+    <option name="stateVersion" value="1" />
+  </component>
+  <component name="ProjectId" id="2Ju38GOQc6CXKcUpV0lQIy2fZBr" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.OpenProjectViewOnStart": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "WebServerToolWindowFactoryState": "false",
+    "last_opened_file_path": "/mnt/Git-Projects/blackbirdchess/blackbirdchess-website-wip",
+    "node.js.detected.package.eslint": "true",
+    "node.js.detected.package.tslint": "true",
+    "node.js.selected.package.eslint": "(autodetect)",
+    "node.js.selected.package.tslint": "(autodetect)",
+    "nodejs_package_manager_path": "npm",
+    "prettierjs.PrettierConfiguration.Package": "/mnt/Git-Projects/blackbirdchess/blackbirdchess-website-wip/node_modules/prettier",
+    "ts.external.directory.path": "/mnt/Git-Projects/blackbirdchess/blackbirdchess-website-wip/node_modules/typescript/lib",
+    "vue.rearranger.settings.migration": "true",
+    "vuejs.nuxt.types-notification-shown": "true"
+  }
+}]]></component>
+  <component name="RecentsManager">
+    <key name="CopyFile.RECENT_KEYS">
+      <recent name="$PROJECT_DIR$/pages" />
+    </key>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="553038dc-ba96-4d5d-be6c-80b0d07ef67b" name="Changes" comment="" />
+      <created>1672913979211</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1672913979211</updated>
+      <workItem from="1672913980315" duration="6985000" />
+      <workItem from="1672923169638" duration="3621000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="3" />
+  </component>
+</project>

.npmrc

@@ -0,0 +1 @@
+engine-strict=true

.prettierignore

@@ -0,0 +1,13 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+
+# Ignore files for PNPM, NPM and YARN
+pnpm-lock.yaml
+package-lock.json
+yarn.lock

.prettierrc

@@ -0,0 +1,9 @@
+{
+	"useTabs": true,
+	"singleQuote": true,
+	"trailingComma": "none",
+	"printWidth": 100,
+	"plugins": ["prettier-plugin-svelte"],
+	"pluginSearchDirs": ["."],
+	"overrides": [{ "files": "*.svelte", "options": { "parser": "svelte" } }]
+}

README.md

@@ -0,0 +1,38 @@
+# create-svelte
+
+Everything you need to build a Svelte project, powered by [`create-svelte`](https://github.com/sveltejs/kit/tree/master/packages/create-svelte).
+
+## Creating a project
+
+If you're seeing this, you've probably already done this step. Congrats!
+
+```bash
+# create a new project in the current directory
+npm create svelte@latest
+
+# create a new project in my-app
+npm create svelte@latest my-app
+```
+
+## Developing
+
+Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+
+```bash
+npm run dev
+
+# or start the server and open the app in a new browser tab
+npm run dev -- --open
+```
+
+## Building
+
+To create a production version of your app:
+
+```bash
+npm run build
+```
+
+You can preview the production build with `npm run preview`.
+
+> To deploy your app, you may need to install an [adapter](https://kit.svelte.dev/docs/adapters) for your target environment.

package.json

@@ -0,0 +1,40 @@
+{
+	"name": "blackbirdchess-website-wip",
+	"version": "0.0.1",
+	"scripts": {
+		"dev": "vite dev",
+		"build": "vite build",
+		"preview": "vite preview",
+		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+		"test:unit": "vitest",
+		"lint": "prettier --plugin-search-dir . --check . && eslint .",
+		"format": "prettier --plugin-search-dir . --write ."
+	},
+	"devDependencies": {
+		"@fontsource/fira-mono": "^4.5.10",
+		"@neoconfetti/svelte": "^1.0.0",
+		"@sveltejs/adapter-auto": "^1.0.0",
+		"@sveltejs/kit": "^1.0.0",
+		"@types/cookie": "^0.5.1",
+		"@typescript-eslint/eslint-plugin": "^5.45.0",
+		"@typescript-eslint/parser": "^5.45.0",
+		"eslint": "^8.28.0",
+		"eslint-config-prettier": "^8.5.0",
+		"eslint-plugin-svelte3": "^4.0.0",
+		"prettier": "^2.8.0",
+		"prettier-plugin-svelte": "^2.8.1",
+		"svelte": "^3.54.0",
+		"svelte-check": "^2.9.2",
+		"tslib": "^2.4.1",
+		"typescript": "^4.9.3",
+		"vite": "^4.0.0",
+		"vitest": "^0.25.3",
+		"postcss": "^8.4.14",
+		"postcss-load-config": "^4.0.1",
+		"svelte-preprocess": "^4.10.7",
+		"autoprefixer": "^10.4.7",
+		"tailwindcss": "^3.1.5"
+	},
+	"type": "module"
+}

postcss.config.cjs

@@ -0,0 +1,13 @@
+const tailwindcss = require('tailwindcss');
+const autoprefixer = require('autoprefixer');
+
+const config = {
+	plugins: [
+		//Some plugins, like tailwindcss/nesting, need to run before Tailwind,
+		tailwindcss(), //But others, like autoprefixer, need to run after,
+		autoprefixer,
+		autoprefixer
+	]
+};
+
+module.exports = config;

src/app.d.ts

@@ -0,0 +1,9 @@
+// See https://kit.svelte.dev/docs/types#app
+// for information about these interfaces
+// and what to do when importing types
+declare namespace App {
+	// interface Error {}
+	// interface Locals {}
+	// interface PageData {}
+	// interface Platform {}
+}

src/app.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8" />
+		<link rel="icon" href="%sveltekit.assets%/favicon.png" />
+		<meta name="viewport" content="width=device-width" />
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover">
+		<div style="display: contents">%sveltekit.body%</div>
+	</body>
+</html>

src/app.postcss

@@ -0,0 +1,9 @@
+/* Write your global styles here, in PostCSS syntax */
+/* Write your global styles here, in PostCSS syntax */
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+    height: 100vh;
+}

src/routes/+layout.svelte

@@ -0,0 +1,5 @@
+<script>
+	import '../app.postcss';
+</script>
+
+<slot />

src/routes/+page.svelte

@@ -0,0 +1,18 @@
+<div class="container h-full">
+	<div class="h-full flex flex-row justify-center items-center">
+		<div class="content">
+			<img src="{bird}">
+			<p class="workinprogress">We are building something great!</p>
+		</div>
+	</div>
+</div>
+
+<script>
+	import bird from '$lib/images/bird.png';
+</script>
+
+<style>
+	.workinprogress {
+		font-size: 2.5rem;
+	}
+</style>

src/routes/about/+page.svelte

@@ -0,0 +1,26 @@
+<svelte:head>
+	<title>About</title>
+	<meta name="description" content="About this app" />
+</svelte:head>
+
+<div class="text-column">
+	<h1>About this app</h1>
+
+	<p>
+		This is a <a href="https://kit.svelte.dev">SvelteKit</a> app. You can make your own by typing the
+		following into your command line and following the prompts:
+	</p>
+
+	<pre>npm create svelte@latest</pre>
+
+	<p>
+		The page you're looking at is purely static HTML, with no client-side interactivity needed.
+		Because of that, we don't need to load any JavaScript. Try viewing the page's source, or opening
+		the devtools network panel and reloading.
+	</p>
+
+	<p>
+		The <a href="/sverdle">Sverdle</a> page illustrates SvelteKit's data loading and form handling. Try
+		using it with JavaScript disabled!
+	</p>
+</div>

src/routes/about/+page.ts

@@ -0,0 +1,9 @@
+import { dev } from '$app/environment';
+
+// we don't need any JS on this page, though we'll load
+// it in dev so that we get hot module replacement
+export const csr = dev;
+
+// since there's no dynamic data here, we can prerender
+// it so that it gets served as a static asset in production
+export const prerender = true;

src/routes/sverdle/+page.server.ts

@@ -0,0 +1,69 @@
+import { fail } from '@sveltejs/kit';
+import { Game } from './game';
+import type { PageServerLoad, Actions } from './$types';
+
+export const load = (({ cookies }) => {
+	const game = new Game(cookies.get('sverdle'));
+
+	return {
+		/**
+		 * The player's guessed words so far
+		 */
+		guesses: game.guesses,
+
+		/**
+		 * An array of strings like '__x_c' corresponding to the guesses, where 'x' means
+		 * an exact match, and 'c' means a close match (right letter, wrong place)
+		 */
+		answers: game.answers,
+
+		/**
+		 * The correct answer, revealed if the game is over
+		 */
+		answer: game.answers.length >= 6 ? game.answer : null
+	};
+}) satisfies PageServerLoad;
+
+export const actions = {
+	/**
+	 * Modify game state in reaction to a keypress. If client-side JavaScript
+	 * is available, this will happen in the browser instead of here
+	 */
+	update: async ({ request, cookies }) => {
+		const game = new Game(cookies.get('sverdle'));
+
+		const data = await request.formData();
+		const key = data.get('key');
+
+		const i = game.answers.length;
+
+		if (key === 'backspace') {
+			game.guesses[i] = game.guesses[i].slice(0, -1);
+		} else {
+			game.guesses[i] += key;
+		}
+
+		cookies.set('sverdle', game.toString());
+	},
+
+	/**
+	 * Modify game state in reaction to a guessed word. This logic always runs on
+	 * the server, so that people can't cheat by peeking at the JavaScript
+	 */
+	enter: async ({ request, cookies }) => {
+		const game = new Game(cookies.get('sverdle'));
+
+		const data = await request.formData();
+		const guess = data.getAll('guess')  as string[];
+
+		if (!game.enter(guess)) {
+			return fail(400, { badGuess: true });
+		}
+
+		cookies.set('sverdle', game.toString());
+	},
+
+	restart: async ({ cookies }) => {
+		cookies.delete('sverdle');
+	}
+} satisfies Actions;

src/routes/sverdle/+page.svelte

@@ -0,0 +1,406 @@
+<script lang="ts">
+	import { confetti } from '@neoconfetti/svelte';
+	import { enhance } from '$app/forms';
+	import type { PageData, ActionData } from './$types';
+	import { reduced_motion } from './reduced-motion';
+
+	export let data: PageData;
+
+	export let form: ActionData;
+
+	/** Whether or not the user has won */
+	$: won = data.answers.at(-1) === 'xxxxx';
+
+	/** The index of the current guess */
+	$: i = won ? -1 : data.answers.length;
+
+	/** Whether the current guess can be submitted */
+	$: submittable = data.guesses[i]?.length === 5;
+
+	/**
+	 * A map of classnames for all letters that have been guessed,
+	 * used for styling the keyboard
+	 */
+	let classnames: Record<string, 'exact' | 'close' | 'missing'>;
+
+	/**
+	 * A map of descriptions for all letters that have been guessed,
+	 * used for adding text for assistive technology (e.g. screen readers)
+	 */
+	let description: Record<string, string>;
+
+	$: {
+		classnames = {};
+		description = {};
+
+		data.answers.forEach((answer, i) => {
+			const guess = data.guesses[i];
+
+			for (let i = 0; i < 5; i += 1) {
+				const letter = guess[i];
+
+				if (answer[i] === 'x') {
+					classnames[letter] = 'exact';
+					description[letter] = 'correct';
+				} else if (!classnames[letter]) {
+					classnames[letter] = answer[i] === 'c' ? 'close' : 'missing';
+					description[letter] = answer[i] === 'c' ? 'present' : 'absent';
+				}
+			}
+		});
+	}
+
+	/**
+	 * Modify the game state without making a trip to the server,
+	 * if client-side JavaScript is enabled
+	 */
+	function update(event: MouseEvent) {
+		const guess = data.guesses[i];
+		const key = (event.target as HTMLButtonElement).getAttribute(
+			'data-key'
+		);
+
+		if (key === 'backspace') {
+			data.guesses[i] = guess.slice(0, -1);
+			if (form?.badGuess) form.badGuess = false;
+		} else if (guess.length < 5) {
+			data.guesses[i] += key;
+		}
+	}
+
+	/**
+	 * Trigger form logic in response to a keydown event, so that
+	 * desktop users can use the keyboard to play the game
+	 */
+	function keydown(event: KeyboardEvent) {
+		if (event.metaKey) return;
+
+		document
+			.querySelector(`[data-key="${event.key}" i]`)
+			?.dispatchEvent(new MouseEvent('click', { cancelable: true }));
+	}
+</script>
+
+<svelte:window on:keydown={keydown} />
+
+<svelte:head>
+	<title>Sverdle</title>
+	<meta name="description" content="A Wordle clone written in SvelteKit" />
+</svelte:head>
+
+<h1 class="visually-hidden">Sverdle</h1>
+
+<form
+	method="POST"
+	action="?/enter"
+	use:enhance={() => {
+		// prevent default callback from resetting the form
+		return ({ update }) => {
+			update({ reset: false });
+		};
+	}}
+>
+	<a class="how-to-play" href="/sverdle/how-to-play">How to play</a>
+
+	<div class="grid" class:playing={!won} class:bad-guess={form?.badGuess}>
+		{#each Array(6) as _, row}
+			{@const current = row === i}
+			<h2 class="visually-hidden">Row {row + 1}</h2>
+			<div class="row" class:current>
+				{#each Array(5) as _, column}
+					{@const answer = data.answers[row]?.[column]}
+					{@const value = data.guesses[row]?.[column] ?? ''}
+					{@const selected = current && column === data.guesses[row].length}
+					{@const exact = answer === 'x'}
+					{@const close = answer === 'c'}
+					{@const missing = answer === '_'}
+					<div class="letter" class:exact class:close class:missing class:selected>
+						{value}
+						<span class="visually-hidden">
+							{#if exact}
+								(correct)
+							{:else if close}
+								(present)
+							{:else if missing}
+								(absent)
+							{:else}
+								empty
+							{/if}
+						</span>
+						<input name="guess" disabled={!current} type="hidden" {value} />
+					</div>
+				{/each}
+			</div>
+		{/each}
+	</div>
+
+	<div class="controls">
+		{#if won || data.answers.length >= 6}
+			{#if !won && data.answer}
+				<p>the answer was "{data.answer}"</p>
+			{/if}
+			<button data-key="enter" class="restart selected" formaction="?/restart">
+				{won ? 'you won :)' : `game over :(`} play again?
+			</button>
+		{:else}
+			<div class="keyboard">
+				<button data-key="enter" class:selected={submittable} disabled={!submittable}>enter</button>
+
+				<button
+					on:click|preventDefault={update}
+					data-key="backspace"
+					formaction="?/update"
+					name="key"
+					value="backspace"
+				>
+					back
+				</button>
+
+				{#each ['qwertyuiop', 'asdfghjkl', 'zxcvbnm'] as row}
+					<div class="row">
+						{#each row as letter}
+							<button
+								on:click|preventDefault={update}
+								data-key={letter}
+								class={classnames[letter]}
+								disabled={data.guesses[i].length === 5}
+								formaction="?/update"
+								name="key"
+								value={letter}
+								aria-label="{letter} {description[letter] || ''}"
+							>
+								{letter}
+							</button>
+						{/each}
+					</div>
+				{/each}
+			</div>
+		{/if}
+	</div>
+</form>
+
+{#if won}
+	<div
+		style="position: absolute; left: 50%; top: 30%"
+		use:confetti={{
+			particleCount: $reduced_motion ? 0 : undefined,
+			force: 0.7,
+			stageWidth: window.innerWidth,
+			stageHeight: window.innerHeight,
+			colors: ['#ff3e00', '#40b3ff', '#676778']
+		}}
+	/>
+{/if}
+
+<style>
+	form {
+		width: 100%;
+		height: 100%;
+		display: flex;
+		flex-direction: column;
+		align-items: center;
+		justify-content: center;
+		gap: 1rem;
+		flex: 1;
+	}
+
+	.how-to-play {
+		color: var(--color-text);
+	}
+
+	.how-to-play::before {
+		content: 'i';
+		display: inline-block;
+		font-size: 0.8em;
+		font-weight: 900;
+		width: 1em;
+		height: 1em;
+		padding: 0.2em;
+		line-height: 1;
+		border: 1.5px solid var(--color-text);
+		border-radius: 50%;
+		text-align: center;
+		margin: 0 0.5em 0 0;
+		position: relative;
+		top: -0.05em;
+	}
+
+	.grid {
+		--width: min(100vw, 40vh, 380px);
+		max-width: var(--width);
+		align-self: center;
+		justify-self: center;
+		width: 100%;
+		height: 100%;
+		display: flex;
+		flex-direction: column;
+		justify-content: flex-start;
+	}
+
+	.grid .row {
+		display: grid;
+		grid-template-columns: repeat(5, 1fr);
+		grid-gap: 0.2rem;
+		margin: 0 0 0.2rem 0;
+	}
+
+	@media (prefers-reduced-motion: no-preference) {
+		.grid.bad-guess .row.current {
+			animation: wiggle 0.5s;
+		}
+	}
+
+	.grid.playing .row.current {
+		filter: drop-shadow(3px 3px 10px var(--color-bg-0));
+	}
+
+	.letter {
+		aspect-ratio: 1;
+		width: 100%;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		text-align: center;
+		box-sizing: border-box;
+		text-transform: lowercase;
+		border: none;
+		font-size: calc(0.08 * var(--width));
+		border-radius: 2px;
+		background: white;
+		margin: 0;
+		color: rgba(0, 0, 0, 0.7);
+	}
+
+	.letter.missing {
+		background: rgba(255, 255, 255, 0.5);
+		color: rgba(0, 0, 0, 0.5);
+	}
+
+	.letter.exact {
+		background: var(--color-theme-2);
+		color: white;
+	}
+
+	.letter.close {
+		border: 2px solid var(--color-theme-2);
+	}
+
+	.selected {
+		outline: 2px solid var(--color-theme-1);
+	}
+
+	.controls {
+		text-align: center;
+		justify-content: center;
+		height: min(18vh, 10rem);
+	}
+
+	.keyboard {
+		--gap: 0.2rem;
+		position: relative;
+		display: flex;
+		flex-direction: column;
+		gap: var(--gap);
+		height: 100%;
+	}
+
+	.keyboard .row {
+		display: flex;
+		justify-content: center;
+		gap: 0.2rem;
+		flex: 1;
+	}
+
+	.keyboard button,
+	.keyboard button:disabled {
+		--size: min(8vw, 4vh, 40px);
+		background-color: white;
+		color: black;
+		width: var(--size);
+		border: none;
+		border-radius: 2px;
+		font-size: calc(var(--size) * 0.5);
+		margin: 0;
+	}
+
+	.keyboard button.exact {
+		background: var(--color-theme-2);
+		color: white;
+	}
+
+	.keyboard button.missing {
+		opacity: 0.5;
+	}
+
+	.keyboard button.close {
+		border: 2px solid var(--color-theme-2);
+	}
+
+	.keyboard button:focus {
+		background: var(--color-theme-1);
+		color: white;
+		outline: none;
+	}
+
+	.keyboard button[data-key='enter'],
+	.keyboard button[data-key='backspace'] {
+		position: absolute;
+		bottom: 0;
+		width: calc(1.5 * var(--size));
+		height: calc(1 / 3 * (100% - 2 * var(--gap)));
+		text-transform: uppercase;
+		font-size: calc(0.3 * var(--size));
+		padding-top: calc(0.15 * var(--size));
+	}
+
+	.keyboard button[data-key='enter'] {
+		right: calc(50% + 3.5 * var(--size) + 0.8rem);
+	}
+
+	.keyboard button[data-key='backspace'] {
+		left: calc(50% + 3.5 * var(--size) + 0.8rem);
+	}
+
+	.keyboard button[data-key='enter']:disabled {
+		opacity: 0.5;
+	}
+
+	.restart {
+		width: 100%;
+		padding: 1rem;
+		background: rgba(255, 255, 255, 0.5);
+		border-radius: 2px;
+		border: none;
+	}
+
+	.restart:focus,
+	.restart:hover {
+		background: var(--color-theme-1);
+		color: white;
+		outline: none;
+	}
+
+	@keyframes wiggle {
+		0% {
+			transform: translateX(0);
+		}
+		10% {
+			transform: translateX(-2px);
+		}
+		30% {
+			transform: translateX(4px);
+		}
+		50% {
+			transform: translateX(-6px);
+		}
+		70% {
+			transform: translateX(+4px);
+		}
+		90% {
+			transform: translateX(-2px);
+		}
+		100% {
+			transform: translateX(0);
+		}
+	}
+</style>

src/routes/sverdle/game.test.ts

@@ -0,0 +1,9 @@
+import { describe, it, expect } from 'vitest';
+import { Game } from './game';
+
+describe('game test', () => {
+	it('returns true when a valid word is entered', () => {
+		const game = new Game();
+		expect(game.enter('zorro'.split(''))).toBe(true);
+	});
+});

src/routes/sverdle/game.ts

@@ -0,0 +1,75 @@
+import { words, allowed } from './words.server';
+
+export class Game {
+	index: number;
+	guesses: string[];
+	answers: string[];
+	answer: string;
+
+	/**
+	 * Create a game object from the player's cookie, or initialise a new game
+	 */
+	constructor(serialized: string | undefined = undefined) {
+		if (serialized) {
+			const [index, guesses, answers] = serialized.split('-');
+
+			this.index = +index;
+			this.guesses = guesses ? guesses.split(' ') : [];
+			this.answers = answers ? answers.split(' ') : [];
+		} else {
+			this.index = Math.floor(Math.random() * words.length);
+			this.guesses = ['', '', '', '', '', ''];
+			this.answers = [] ;
+		}
+
+		this.answer = words[this.index];
+	}
+
+	/**
+	 * Update game state based on a guess of a five-letter word. Returns
+	 * true if the guess was valid, false otherwise
+	 */
+	enter(letters: string[]) {
+		const word = letters.join('');
+		const valid = allowed.has(word);
+
+		if (!valid) return false;
+
+		this.guesses[this.answers.length] = word;
+
+		const available = Array.from(this.answer);
+		const answer = Array(5).fill('_');
+
+		// first, find exact matches
+		for (let i = 0; i < 5; i += 1) {
+			if (letters[i] === available[i]) {
+				answer[i] = 'x';
+				available[i] = ' ';
+			}
+		}
+
+		// then find close matches (this has to happen
+		// in a second step, otherwise an early close
+		// match can prevent a later exact match)
+		for (let i = 0; i < 5; i += 1) {
+			if (answer[i] === '_') {
+				const index = available.indexOf(letters[i]);
+				if (index !== -1) {
+					answer[i] = 'c';
+					available[index] = ' ';
+				}
+			}
+		}
+
+		this.answers.push(answer.join(''));
+
+		return true;
+	}
+
+	/**
+	 * Serialize game state so it can be set as a cookie
+	 */
+	toString() {
+		return `${this.index}-${this.guesses.join(' ')}-${this.answers.join(' ')}`;
+	}
+}

src/routes/sverdle/how-to-play/+page.svelte

@@ -0,0 +1,95 @@
+<svelte:head>
+	<title>How to play Sverdle</title>
+	<meta name="description" content="How to play Sverdle" />
+</svelte:head>
+
+<div class="text-column">
+	<h1>How to play Sverdle</h1>
+
+	<p>
+		Sverdle is a clone of <a href="https://www.nytimes.com/games/wordle/index.html">Wordle</a>, the
+		word guessing game. To play, enter a five-letter English word. For example:
+	</p>
+
+	<div class="example">
+		<span class="close">r</span>
+		<span class="missing">i</span>
+		<span class="close">t</span>
+		<span class="missing">z</span>
+		<span class="exact">y</span>
+	</div>
+
+	<p>
+		The <span class="exact">y</span> is in the right place. <span class="close">r</span> and
+		<span class="close">t</span>
+		are the right letters, but in the wrong place. The other letters are wrong, and can be discarded.
+		Let's make another guess:
+	</p>
+
+	<div class="example">
+		<span class="exact">p</span>
+		<span class="exact">a</span>
+		<span class="exact">r</span>
+		<span class="exact">t</span>
+		<span class="exact">y</span>
+	</div>
+
+	<p>This time we guessed right! You have <strong>six</strong> guesses to get the word.</p>
+
+	<p>
+		Unlike the original Wordle, Sverdle runs on the server instead of in the browser, making it
+		impossible to cheat. It uses <code>&lt;form&gt;</code> and cookies to submit data, meaning you can
+		even play with JavaScript disabled!
+	</p>
+</div>
+
+<style>
+	span {
+		display: inline-flex;
+		justify-content: center;
+		align-items: center;
+		font-size: 0.8em;
+		width: 2.4em;
+		height: 2.4em;
+		background-color: white;
+		box-sizing: border-box;
+		border-radius: 2px;
+		border-width: 2px;
+		color: rgba(0, 0, 0, 0.7);
+	}
+
+	.missing {
+		background: rgba(255, 255, 255, 0.5);
+		color: rgba(0, 0, 0, 0.5);
+	}
+
+	.close {
+		border-style: solid;
+		border-color: var(--color-theme-2);
+	}
+
+	.exact {
+		background: var(--color-theme-2);
+		color: white;
+	}
+
+	.example {
+		display: flex;
+		justify-content: flex-start;
+		margin: 1rem 0;
+		gap: 0.2rem;
+	}
+
+	.example span {
+		font-size: 1.4rem;
+	}
+
+	p span {
+		position: relative;
+		border-width: 1px;
+		border-radius: 1px;
+		font-size: 0.4em;
+		transform: scale(2) translate(0, -10%);
+		margin: 0 1em;
+	}
+</style>

src/routes/sverdle/how-to-play/+page.ts

@@ -0,0 +1,9 @@
+import { dev } from '$app/environment';
+
+// we don't need any JS on this page, though we'll load
+// it in dev so that we get hot module replacement
+export const csr = dev;
+
+// since there's no dynamic data here, we can prerender
+// it so that it gets served as a static asset in production
+export const prerender = true;

src/routes/sverdle/reduced-motion.ts

@@ -0,0 +1,23 @@
+import { readable } from 'svelte/store';
+import { browser } from '$app/environment';
+
+const reduced_motion_query = '(prefers-reduced-motion: reduce)';
+
+const get_initial_motion_preference = () => {
+	if (!browser) return false;
+	return window.matchMedia(reduced_motion_query).matches;
+};
+
+export const reduced_motion = readable(get_initial_motion_preference(), (set) => {
+	if (browser) {
+		const set_reduced_motion = (event: MediaQueryListEvent) => {
+			set(event.matches);
+		};
+		const media_query_list = window.matchMedia(reduced_motion_query);
+		media_query_list.addEventListener('change', set_reduced_motion);
+
+		return () => {
+			media_query_list.removeEventListener('change', set_reduced_motion);
+		};
+	}
+});

static/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

svelte.config.js

@@ -0,0 +1,21 @@
+import preprocess from 'svelte-preprocess';
+import adapter from '@sveltejs/adapter-auto';
+import { vitePreprocess } from '@sveltejs/kit/vite';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	// Consult https://kit.svelte.dev/docs/integrations#preprocessors
+	// for more information about preprocessors
+	preprocess: [
+		vitePreprocess(),
+		preprocess({
+			postcss: true
+		})
+	],
+
+	kit: {
+		adapter: adapter()
+	}
+};
+
+export default config;

tailwind.config.cjs

@@ -0,0 +1,13 @@
+const config = {
+	content: ['./src/**/*.{html,js,svelte,ts}'],
+
+	theme: {
+		container: {
+			center: true,
+		},
+	},
+
+	plugins: []
+};
+
+module.exports = config;

tsconfig.json

@@ -0,0 +1,17 @@
+{
+	"extends": "./.svelte-kit/tsconfig.json",
+	"compilerOptions": {
+		"allowJs": true,
+		"checkJs": true,
+		"esModuleInterop": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true
+	}
+	// Path aliases are handled by https://kit.svelte.dev/docs/configuration#alias
+	//
+	// If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
+	// from the referenced tsconfig.json - TypeScript does not merge them in
+}

vite.config.js

@@ -0,0 +1,11 @@
+import { sveltekit } from '@sveltejs/kit/vite';
+
+/** @type {import('vite').UserConfig} */
+const config = {
+	plugins: [sveltekit()],
+	test: {
+		include: ['src/**/*.{test,spec}.{js,ts}']
+	}
+};
+
+export default config;