const PORT = 55782; const HEADERS_BOARD = { headers: { "Content-Type": "text/html", "Cache-Control": "no-store", }, }; const HEADERS_STYLESHEET = { headers: { "Content-Type": "text/css", }, }; async function htmlDoc(body: string, head: string): Promise { return `${head}${body}` } async function createBoard(width: number, height: number, mines: number): Promise { console.debug("width", width, "height", height, "mines", mines); if (width <= 0 || height <= 0 || mines <= 0) { return await htmlDoc("NO 0 VALUES ALLOWED", ""); } if (width > 50 || height > 50) { return await htmlDoc("NO FIELDS LARGER THAN 50 IN EITHER DIMENSION", ""); } if (mines >= width * height) { return await htmlDoc("TOO MANY MINES", ""); } const board = new Array(width * height).fill(false); let safeIdx = board.map((_, idx) => idx); for (let placedMines = 0; placedMines < mines; placedMines++) { const mineIdx = safeIdx.splice(Math.floor(Math.random() * safeIdx.length), 1)[0]; board[mineIdx] = true; } function getNeighbors(idx: number): number { let count = 0; const leftEdge = (idx % width) === 0; const topEdge = idx < width; const bottomEdge = idx > (height * (width - 1)); const rightEdge = (idx % width) === (width - 1); if (!leftEdge && board[idx - 1]) { count++; } if (!leftEdge && !topEdge && board[idx - 1 - width]) { count++; } if (!leftEdge && !bottomEdge && board[idx - 1 + width]) { count++; } if (!rightEdge && board[idx + 1]) { count++; } if (!rightEdge && !topEdge && board[idx + 1 - width]) { count++; } if (!rightEdge && !bottomEdge && board[idx + 1 + width]) { count++; } if (!topEdge && board[idx - width]) { count++; } if (!bottomEdge && board[idx + width]) { count++; } return count; } let table = ""; let inputs = ""; let style = "" return await htmlDoc(`${inputs}

${table}

`, style) } Bun.serve({ PORT, async fetch(request) { const url = new URL(request.url); if (url.pathname === "/favicon.ico") { // TODO: Add favicon return new Response("Not found", { status: 404, statusText: "Not found" }); } if (url.pathname === "/style.css") { return new Response(await Bun.file("style.css").text(), HEADERS_STYLESHEET); } if (url.pathname !== "/") { return new Response("Not found", { status: 404, statusText: "Not found" }); } let height = Number.parseInt(url.searchParams.get("height") ?? "NaN"); if (Number.isNaN(height)) { height = 10; } let width = Number.parseInt(url.searchParams.get("width") ?? "NaN"); if (Number.isNaN(width)) { width = 10; } let mines = Number.parseInt(url.searchParams.get("mines") ?? "NaN"); if (Number.isNaN(mines)) { mines = 10; } return new Response(await createBoard(width, height, mines), HEADERS_BOARD); } })