128 lines
3.7 KiB
TypeScript
128 lines
3.7 KiB
TypeScript
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const PORT = 55782;
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const HEADERS_BOARD = {
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headers: {
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"Content-Type": "text/html",
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"Cache-Control": "no-store",
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},
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};
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const HEADERS_STYLESHEET = {
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headers: {
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"Content-Type": "text/css",
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},
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};
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async function htmlDoc(body: string, head: string): Promise<string> {
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return `<!DOCTYPE html><html><head><link rel=stylesheet href=style.css>${head}</head><body>${body}</body></html>`
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}
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async function createBoard(width: number, height: number, mines: number): Promise<string> {
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console.debug("width", width, "height", height, "mines", mines);
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if (width <= 0 || height <= 0 || mines <= 0) {
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return await htmlDoc("NO 0 VALUES ALLOWED", "");
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}
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if (width > 50 || height > 50) {
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return await htmlDoc("NO FIELDS LARGER THAN 50 IN EITHER DIMENSION", "");
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}
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if (mines >= width * height) {
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return await htmlDoc("TOO MANY MINES", "");
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}
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const board = new Array(width * height).fill(false);
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let safeIdx = board.map((_, idx) => idx);
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for (let placedMines = 0; placedMines < mines; placedMines++) {
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const mineIdx = safeIdx.splice(Math.floor(Math.random() * safeIdx.length), 1)[0];
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board[mineIdx] = true;
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}
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function getNeighbors(idx: number): number {
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let count = 0;
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const leftEdge = (idx % width) === 0;
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const topEdge = idx < width;
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const bottomEdge = idx > (height * (width - 1));
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const rightEdge = (idx % width) === (width - 1);
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if (!leftEdge && board[idx - 1]) {
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count++;
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}
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if (!leftEdge && !topEdge && board[idx - 1 - width]) {
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count++;
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}
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if (!leftEdge && !bottomEdge && board[idx - 1 + width]) {
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count++;
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}
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if (!rightEdge && board[idx + 1]) {
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count++;
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}
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if (!rightEdge && !topEdge && board[idx + 1 - width]) {
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count++;
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}
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if (!rightEdge && !bottomEdge && board[idx + 1 + width]) {
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count++;
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}
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if (!topEdge && board[idx - width]) {
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count++;
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}
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if (!bottomEdge && board[idx + width]) {
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count++;
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}
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return count;
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}
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let table = "<table><tbody><tr>";
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let inputs = "";
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let style = "<style>";
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for (const [idx, fieldIsMine] of board.entries()) {
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table += `<td><label for=input_${idx}></label></td>`;
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if ((idx % width) === (width - 1)) {
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table += "</tr><tr>"
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}
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inputs += `<input id=input_${idx} type=checkbox ${fieldIsMine ? "data-mine" : "data-safe"}></input>`;
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style += `#input_${idx}:checked ~ main label[for="input_${idx}"]::before { content: "${fieldIsMine ? "X" : getNeighbors(idx)}"; }\n`
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+ `#input_${idx}:checked ~ main label[for="input_${idx}"] { pointer-events: none; }`;
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}
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table += "</tr></tbody></table>"
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style += "</style>"
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return await htmlDoc(`${inputs}<main>${table}</main><footer><span id=lost>HAHA you lost >:)</span><span id=won>YAY, you WON!!!</span></footer>`, style)
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}
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Bun.serve({
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PORT,
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async fetch(request) {
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const url = new URL(request.url);
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if (url.pathname === "/favicon.ico") {
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// TODO: Add favicon
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return new Response("Not found", { status: 404, statusText: "Not found" });
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}
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if (url.pathname === "/style.css") {
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return new Response(await Bun.file("style.css").text(), HEADERS_STYLESHEET);
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}
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if (url.pathname !== "/") {
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return new Response("Not found", { status: 404, statusText: "Not found" });
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}
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let height = Number.parseInt(url.searchParams.get("height") ?? "NaN");
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if (Number.isNaN(height)) {
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height = 10;
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}
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let width = Number.parseInt(url.searchParams.get("width") ?? "NaN");
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if (Number.isNaN(width)) {
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width = 10;
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}
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let mines = Number.parseInt(url.searchParams.get("mines") ?? "NaN");
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if (Number.isNaN(mines)) {
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mines = 10;
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}
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return new Response(await createBoard(width, height, mines), HEADERS_BOARD);
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}
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})
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