first commit

This commit is contained in:
Puechberty Arthur
2026-03-30 23:26:19 +02:00
commit 2de4261631
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"use client";
import { Grid } from "../lib/sudoku";
interface SudokuGridProps {
grid: Grid;
index: number;
isSolution?: boolean;
}
export default function SudokuGrid({ grid, index, isSolution = false }: SudokuGridProps) {
return (
<figure className="sudoku-container" aria-label={`Grille de sudoku numéro ${index + 1}${isSolution ? " (solution)" : ""}`}>
<figcaption className="sudoku-number">N°{index + 1}</figcaption>
<table className="sudoku-table" role="grid" aria-label={`Sudoku ${index + 1}`}>
<tbody>
{grid.map((row, r) => (
<tr key={r}>
{row.map((cell, c) => {
const borderClasses = [
"sudoku-cell",
c % 3 === 0 ? "border-l-thick" : "",
c === 8 ? "border-r-thick" : "",
r % 3 === 0 ? "border-t-thick" : "",
r === 8 ? "border-b-thick" : "",
].filter(Boolean).join(" ");
return (
<td key={c} className={borderClasses}>
{cell !== 0 ? (
<span className={isSolution && cell ? "solution-digit" : "given-digit"}>
{cell}
</span>
) : null}
</td>
);
})}
</tr>
))}
</tbody>
</table>
</figure>
);
}
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@import "tailwindcss";
:root {
--background: #ffffff;
--foreground: #171717;
}
@theme inline {
--color-background: var(--background);
--color-foreground: var(--foreground);
--font-sans: var(--font-geist-sans);
--font-mono: var(--font-geist-mono);
}
body {
background: var(--background);
color: var(--foreground);
font-family: Arial, Helvetica, sans-serif;
margin: 0;
padding: 0;
}
/* ========== APP LAYOUT ========== */
.app-container {
min-height: 100vh;
}
/* ========== CONTROLS (screen only) ========== */
.controls {
text-align: center;
padding: 1.5rem 0.75rem 1.2rem;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
}
.app-title {
font-size: 1.4rem;
font-weight: 700;
margin: 0 0 0.4rem;
}
.app-subtitle {
font-size: 0.85rem;
opacity: 0.9;
margin: 0 0 1rem;
max-width: 500px;
margin-left: auto;
margin-right: auto;
padding: 0 0.5rem;
}
.button-group {
display: flex;
flex-wrap: wrap;
gap: 0.4rem;
justify-content: center;
align-items: center;
padding: 0 0.5rem;
}
.btn-difficulty {
padding: 0.5rem 1rem;
border: 2px solid rgba(255, 255, 255, 0.6);
border-radius: 8px;
background: rgba(255, 255, 255, 0.15);
color: white;
font-size: 0.85rem;
font-weight: 600;
cursor: pointer;
transition: all 0.2s;
flex: 1 1 auto;
min-width: 0;
}
.btn-difficulty:hover:not(:disabled) {
background: rgba(255, 255, 255, 0.3);
border-color: white;
}
.btn-difficulty.btn-active {
background: white;
color: #764ba2;
border-color: white;
}
.btn-difficulty:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.btn-print {
padding: 0.5rem 1.2rem;
border: none;
border-radius: 8px;
background: #fbbf24;
color: #1a1a1a;
font-size: 0.85rem;
font-weight: 700;
cursor: pointer;
transition: all 0.2s;
width: 100%;
margin-top: 0.3rem;
}
.btn-print:hover:not(:disabled) {
background: #f59e0b;
transform: scale(1.02);
}
.btn-print:disabled {
opacity: 0.4;
cursor: not-allowed;
}
.generating-text {
margin-top: 0.8rem;
font-size: 0.9rem;
animation: pulse 1.2s infinite;
}
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.4; }
}
/* ========== RESPONSIVE: TABLET (>=600px) ========== */
@media screen and (min-width: 600px) {
.controls {
padding: 2rem 1.5rem 1.5rem;
}
.app-title {
font-size: 1.8rem;
}
.app-subtitle {
font-size: 1rem;
}
.btn-difficulty {
padding: 0.6rem 1.4rem;
font-size: 0.95rem;
flex: 0 1 auto;
}
.btn-print {
width: auto;
padding: 0.6rem 1.6rem;
font-size: 0.95rem;
margin-top: 0;
margin-left: 0.5rem;
}
}
/* ========== RESPONSIVE: DESKTOP (>=900px) ========== */
@media screen and (min-width: 900px) {
.controls {
padding: 2.5rem 2rem 1.5rem;
}
.app-title {
font-size: 2rem;
}
}
/* ========== SEO CONTENT (hidden visually, accessible to crawlers) ========== */
.seo-content {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border: 0;
}
.seo-content h2 {
font-size: 1rem;
font-weight: 700;
color: #374151;
margin: 0 0 0.5rem;
}
.seo-content p {
margin: 0;
}
/* ========== PRINT AREA (visible on screen + print) ========== */
.print-area {
padding: 0.5rem;
}
.print-page {
max-width: 210mm;
margin: 0 auto 1.5rem;
padding: 0.75rem;
background: white;
border: 1px solid #e5e7eb;
border-radius: 8px;
overflow-x: auto;
}
.page-title {
text-align: center;
font-size: 1.1rem;
font-weight: 700;
margin: 0.2rem 0 0.6rem;
color: #1a1a1a;
}
.sudoku-grid-container {
display: grid;
grid-template-columns: 1fr;
gap: 0.8rem;
justify-items: center;
}
@media screen and (min-width: 480px) {
.sudoku-grid-container {
grid-template-columns: repeat(2, 1fr);
gap: 0.6rem 0.8rem;
}
}
@media screen and (min-width: 600px) {
.print-area {
padding: 1rem;
}
.print-page {
padding: 1rem;
}
.page-title {
font-size: 1.3rem;
margin: 0.3rem 0 0.8rem;
}
.sudoku-grid-container {
gap: 0.8rem 1.2rem;
}
}
@media screen and (min-width: 900px) {
.print-page {
margin: 0 auto 2rem;
}
}
/* ========== SUDOKU GRID ========== */
.sudoku-container {
text-align: center;
}
.sudoku-number {
font-size: 0.75rem;
font-weight: 600;
color: #6b7280;
margin: 0 0 0.15rem;
}
.sudoku-table {
border-collapse: collapse;
width: 100%;
max-width: 270px;
}
.sudoku-cell {
width: clamp(22px, 4.5vw, 32px);
height: clamp(22px, 4.5vw, 32px);
text-align: center;
vertical-align: middle;
font-size: clamp(0.65rem, 1.8vw, 0.95rem);
font-weight: 500;
border: 1px solid #bbb;
padding: 0;
}
@media screen and (min-width: 480px) {
.sudoku-cell {
width: clamp(24px, 3.2vw, 30px);
height: clamp(24px, 3.2vw, 30px);
font-size: clamp(0.7rem, 1.5vw, 0.9rem);
}
.sudoku-table {
max-width: 280px;
}
}
@media screen and (min-width: 900px) {
.sudoku-cell {
width: 30px;
height: 30px;
font-size: 0.9rem;
}
.sudoku-table {
max-width: 300px;
}
}
.border-l-thick { border-left: 2.5px solid #222 !important; }
.border-r-thick { border-right: 2.5px solid #222 !important; }
.border-t-thick { border-top: 2.5px solid #222 !important; }
.border-b-thick { border-bottom: 2.5px solid #222 !important; }
.given-digit {
color: #1a1a1a;
font-weight: 700;
}
.solution-digit {
color: #1a1a1a;
font-weight: 500;
}
/* ========== PRINT STYLES ========== */
.no-print {
display: block;
}
@media print {
@page {
size: A4 portrait;
margin: 8mm 10mm 8mm 10mm;
}
body {
background: white !important;
color: black !important;
margin: 0;
padding: 0;
-webkit-print-color-adjust: exact;
print-color-adjust: exact;
}
.no-print {
display: none !important;
}
.print-area {
padding: 0;
}
.print-page {
border: none !important;
border-radius: 0 !important;
margin: 0;
padding: 0;
max-width: none;
page-break-after: always;
break-after: page;
height: 100%;
display: flex;
flex-direction: column;
}
.print-page:last-child {
page-break-after: avoid;
}
.page-title {
font-size: 12pt;
margin: 0 0 2mm;
color: black;
}
.sudoku-grid-container {
flex: 1;
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 2mm 6mm;
justify-items: center;
align-content: start;
}
.sudoku-container {
text-align: center;
}
.sudoku-number {
font-size: 7pt;
color: #333;
margin: 0 0 0.5mm;
}
.sudoku-cell {
width: 8mm;
height: 8mm;
font-size: 10pt;
border: 1pt solid #666;
}
.border-l-thick { border-left: 2.5pt solid #000 !important; }
.border-r-thick { border-right: 2.5pt solid #000 !important; }
.border-t-thick { border-top: 2.5pt solid #000 !important; }
.border-b-thick { border-bottom: 2.5pt solid #000 !important; }
.given-digit {
color: black;
font-weight: 700;
}
.solution-digit {
color: black;
font-weight: 500;
}
}
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import type { Metadata, Viewport } from "next";
import { Geist, Geist_Mono } from "next/font/google";
import "./globals.css";
const geistSans = Geist({
variable: "--font-geist-sans",
subsets: ["latin"],
display: "swap",
});
const geistMono = Geist_Mono({
variable: "--font-geist-mono",
subsets: ["latin"],
display: "swap",
});
export const viewport: Viewport = {
width: "device-width",
initialScale: 1,
themeColor: "#667eea",
};
export const metadata: Metadata = {
title: "Générateur de Sudoku gratuit — Imprimer des grilles avec solutions",
description:
"Générez et imprimez gratuitement des grilles de Sudoku avec leurs solutions sur une feuille A4. 4 niveaux de difficulté : facile, moyen, difficile et expert. Aucune inscription requise.",
keywords: [
"sudoku",
"grille sudoku",
"imprimer sudoku",
"sudoku gratuit",
"sudoku à imprimer",
"sudoku avec solution",
"générateur sudoku",
"sudoku facile",
"sudoku moyen",
"sudoku difficile",
"sudoku expert",
"sudoku PDF",
"jeu de logique",
],
authors: [{ name: "Sudoku Générateur" }],
creator: "Sudoku Générateur",
publisher: "Sudoku Générateur",
robots: {
index: true,
follow: true,
googleBot: {
index: true,
follow: true,
"max-snippet": -1,
"max-image-preview": "large",
},
},
openGraph: {
type: "website",
locale: "fr_FR",
title: "Générateur de Sudoku gratuit — Imprimer des grilles avec solutions",
description:
"Générez et imprimez gratuitement des grilles de Sudoku avec solutions. 4 niveaux : facile, moyen, difficile, expert.",
siteName: "Générateur de Sudoku",
},
twitter: {
card: "summary_large_image",
title: "Générateur de Sudoku gratuit — Imprimer des grilles",
description:
"Générez et imprimez gratuitement des grilles de Sudoku avec solutions. 4 niveaux de difficulté.",
},
alternates: {
canonical: "/",
},
};
export default function RootLayout({
children,
}: Readonly<{
children: React.ReactNode;
}>) {
const jsonLd = {
"@context": "https://schema.org",
"@type": "WebApplication",
name: "Générateur de Sudoku",
description:
"Générez et imprimez gratuitement des grilles de Sudoku avec solutions sur feuille A4.",
applicationCategory: "GameApplication",
operatingSystem: "Tous",
offers: {
"@type": "Offer",
price: "0",
priceCurrency: "EUR",
},
inLanguage: "fr",
browserRequirements: "Requires JavaScript. Requires HTML5.",
featureList: [
"Génération de sudoku valides et solvables",
"4 niveaux de difficulté",
"Impression optimisée A4",
"Solutions incluses",
],
};
return (
<html lang="fr">
<head>
<script
type="application/ld+json"
dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
/>
</head>
<body
className={`${geistSans.variable} ${geistMono.variable} antialiased`}
>
{children}
</body>
</html>
);
}
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// Sudoku generator - generates valid, solvable puzzles
export type Grid = number[][]; // 0 = empty cell, 1-9 = filled
export type Difficulty = "facile" | "moyen" | "difficile" | "expert";
const DIFFICULTY_LABELS: Record<Difficulty, string> = {
facile: "Facile",
moyen: "Moyen",
difficile: "Difficile",
expert: "Expert",
};
export function getDifficultyLabel(d: Difficulty): string {
return DIFFICULTY_LABELS[d];
}
// Number of cells to remove per difficulty
const CELLS_TO_REMOVE: Record<Difficulty, number> = {
facile: 36,
moyen: 46,
difficile: 52,
expert: 58,
};
function shuffleArray<T>(arr: T[]): T[] {
const a = [...arr];
for (let i = a.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[a[i], a[j]] = [a[j], a[i]];
}
return a;
}
function createEmptyGrid(): Grid {
return Array.from({ length: 9 }, () => Array(9).fill(0));
}
function cloneGrid(grid: Grid): Grid {
return grid.map((row) => [...row]);
}
function isValid(grid: Grid, row: number, col: number, num: number): boolean {
// Check row
for (let c = 0; c < 9; c++) {
if (grid[row][c] === num) return false;
}
// Check column
for (let r = 0; r < 9; r++) {
if (grid[r][col] === num) return false;
}
// Check 3x3 box
const boxRow = Math.floor(row / 3) * 3;
const boxCol = Math.floor(col / 3) * 3;
for (let r = boxRow; r < boxRow + 3; r++) {
for (let c = boxCol; c < boxCol + 3; c++) {
if (grid[r][c] === num) return false;
}
}
return true;
}
// Fill the grid completely using backtracking with randomization
function fillGrid(grid: Grid): boolean {
for (let row = 0; row < 9; row++) {
for (let col = 0; col < 9; col++) {
if (grid[row][col] === 0) {
const nums = shuffleArray([1, 2, 3, 4, 5, 6, 7, 8, 9]);
for (const num of nums) {
if (isValid(grid, row, col, num)) {
grid[row][col] = num;
if (fillGrid(grid)) return true;
grid[row][col] = 0;
}
}
return false;
}
}
}
return true;
}
// Count solutions (stop at 2 to check uniqueness)
function countSolutions(grid: Grid, limit: number = 2): number {
let count = 0;
function solve(g: Grid): boolean {
for (let row = 0; row < 9; row++) {
for (let col = 0; col < 9; col++) {
if (g[row][col] === 0) {
for (let num = 1; num <= 9; num++) {
if (isValid(g, row, col, num)) {
g[row][col] = num;
if (solve(g)) {
if (count >= limit) return true;
}
g[row][col] = 0;
}
}
return false;
}
}
}
count++;
return count >= limit;
}
solve(cloneGrid(grid));
return count;
}
// Generate a puzzle by removing cells from a complete grid
function generatePuzzle(
solution: Grid,
difficulty: Difficulty
): Grid {
const puzzle = cloneGrid(solution);
const toRemove = CELLS_TO_REMOVE[difficulty];
// Create list of all cell positions and shuffle
const positions: [number, number][] = [];
for (let r = 0; r < 9; r++) {
for (let c = 0; c < 9; c++) {
positions.push([r, c]);
}
}
const shuffled = shuffleArray(positions);
let removed = 0;
for (const [r, c] of shuffled) {
if (removed >= toRemove) break;
const backup = puzzle[r][c];
puzzle[r][c] = 0;
// For easier difficulties, always verify uniqueness
// For expert, we relax after enough removals to speed up generation
if (difficulty === "expert" && removed > 45) {
removed++;
continue;
}
if (countSolutions(puzzle) !== 1) {
puzzle[r][c] = backup; // restore - would create multiple solutions
} else {
removed++;
}
}
return puzzle;
}
export interface SudokuPuzzle {
puzzle: Grid;
solution: Grid;
}
// Generate a single sudoku puzzle
export function generateSudoku(difficulty: Difficulty): SudokuPuzzle {
const solution = createEmptyGrid();
fillGrid(solution);
const puzzle = generatePuzzle(solution, difficulty);
return { puzzle, solution };
}
// Generate multiple sudoku puzzles
export function generateSudokus(
difficulty: Difficulty,
count: number = 6
): SudokuPuzzle[] {
const puzzles: SudokuPuzzle[] = [];
for (let i = 0; i < count; i++) {
puzzles.push(generateSudoku(difficulty));
}
return puzzles;
}
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"use client";
import { useState, useCallback, useEffect } from "react";
import { Difficulty, getDifficultyLabel, generateSudokus, SudokuPuzzle } from "./lib/sudoku";
import SudokuGrid from "./components/SudokuGrid";
const DIFFICULTIES: Difficulty[] = ["facile", "moyen", "difficile", "expert"];
const SUDOKU_COUNT = 6;
export default function Home() {
const [difficulty, setDifficulty] = useState<Difficulty>("moyen");
const [puzzles, setPuzzles] = useState<SudokuPuzzle[] | null>(null);
const [generating, setGenerating] = useState(false);
// Générer automatiquement des sudoku "Moyen" au chargement
useEffect(() => {
setGenerating(true);
setTimeout(() => {
const generated = generateSudokus("moyen", SUDOKU_COUNT);
setPuzzles(generated);
setGenerating(false);
}, 50);
}, []);
const handleGenerate = useCallback((diff: Difficulty) => {
setDifficulty(diff);
setGenerating(true);
// Use setTimeout to let UI update before heavy computation
setTimeout(() => {
const generated = generateSudokus(diff, SUDOKU_COUNT);
setPuzzles(generated);
setGenerating(false);
}, 50);
}, []);
const handlePrint = useCallback(() => {
if (!puzzles) {
setGenerating(true);
setTimeout(() => {
const generated = generateSudokus(difficulty, SUDOKU_COUNT);
setPuzzles(generated);
setGenerating(false);
setTimeout(() => window.print(), 100);
}, 50);
} else {
window.print();
}
}, [puzzles, difficulty]);
const label = getDifficultyLabel(difficulty);
return (
<div className="app-container">
{/* Controls - hidden when printing */}
<header className="controls no-print" role="banner">
<h1 className="app-title">🧩 Générateur de Sudoku</h1>
<p className="app-subtitle">
Choisissez une difficulté pour générer {SUDOKU_COUNT} sudoku sur une feuille A4 avec leurs solutions.
</p>
<nav className="button-group" role="navigation" aria-label="Choix de difficulté">
{DIFFICULTIES.map((diff) => (
<button
key={diff}
onClick={() => handleGenerate(diff)}
disabled={generating}
aria-pressed={difficulty === diff && !!puzzles}
className={`btn-difficulty ${difficulty === diff && puzzles ? "btn-active" : ""}`}
>
{getDifficultyLabel(diff)}
</button>
))}
<button
onClick={handlePrint}
disabled={generating || !puzzles}
className="btn-print"
aria-label="Imprimer les grilles de sudoku"
>
🖨 Imprimer
</button>
</nav>
{generating && (
<p className="generating-text" role="status" aria-live="polite">Génération en cours</p>
)}
</header>
{/* SEO content - visible to crawlers, visually subtle */}
<section className="seo-content no-print" aria-label="À propos">
<h2>Générateur de Sudoku gratuit à imprimer</h2>
<p>
Créez et imprimez des grilles de Sudoku gratuitement. Notre générateur produit des puzzles
valides et solvables avec 4 niveaux de difficulté : facile, moyen, difficile et expert.
Chaque feuille A4 contient 6 grilles 9×9 accompagnées de leurs solutions sur une page séparée.
Idéal pour s&apos;entraîner, jouer en famille ou en classe.
</p>
</section>
{/* Printable content */}
{puzzles && (
<main className="print-area" role="main">
{/* Page 1: Puzzles */}
<section className="print-page" aria-label={`Grilles de sudoku niveau ${label}`}>
<h2 className="page-title">Sudoku Niveau {label}</h2>
<div className="sudoku-grid-container">
{puzzles.map((p, i) => (
<SudokuGrid key={`puzzle-${i}`} grid={p.puzzle} index={i} />
))}
</div>
</section>
{/* Page 2: Solutions */}
<section className="print-page" aria-label={`Solutions niveau ${label}`}>
<h2 className="page-title">Solutions Niveau {label}</h2>
<div className="sudoku-grid-container">
{puzzles.map((p, i) => (
<SudokuGrid key={`solution-${i}`} grid={p.solution} index={i} isSolution />
))}
</div>
</section>
</main>
)}
</div>
);
}
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import type { MetadataRoute } from "next";
export default function robots(): MetadataRoute.Robots {
return {
rules: [
{
userAgent: "*",
allow: "/",
},
],
sitemap: "https://imprimersudoku.arthurp.fr/sitemap.xml",
};
}
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import type { MetadataRoute } from "next";
export default function sitemap(): MetadataRoute.Sitemap {
return [
{
url: "https://imprimersudoku.arthurp.fr",
lastModified: new Date(),
changeFrequency: "monthly",
priority: 1,
},
];
}