Eric WagonerandClaude Fable 5
4838996cf0
The share button lands on the instant replay. One click mints a slug — persistent, unguessable, one per (room, turn) — and copies a /watch link anyone can open: the server rebuilds exactly that turn for the nameless SPECTATOR, public knowledge only, none of the rest of the game visible. The page arrives with its OpenGraph card pre-baked into the head (crawlers never run the app): the turn's title and round in the text, and an og.png of the maze itself — cells, walls, doors, warp mouths, homes, standees — painted server-side and PNG-encoded with nothing but node's own zlib. The viewer page wears its chrome: the WIZ-WAR masthead linking home, the turn's title, the reel opening straight into the turn-owner's eyes with a "watch it again" loop, and a footer that says what this table is and deals the visitor in. The share page loads as its own entry so a shared link never drags the full app's socket appetite along; the reel's modal scrim learns to stand in a page instead of over one. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
59 lines
1.8 KiB
TypeScript
59 lines
1.8 KiB
TypeScript
// Share links: a minted slug names one turn of one game, and anyone
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// holding it may watch that turn — spectator-redacted, nothing else of
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// the game visible. Shares persist beside the rooms and survive restarts.
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import { appendFileSync, existsSync, readFileSync } from "node:fs";
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import { join } from "node:path";
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import { randomInt } from "node:crypto";
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import { statsDir } from "./store";
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export interface Share {
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id: string;
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roomId: string;
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turn: number;
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createdAt: string;
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}
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const SHARE_ALPHABET = "abcdefghjkmnpqrstuvwxyz23456789";
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const SHARE_ID_LENGTH = 10; // 31^10 ≈ 8×10^14 — unguessable, typeable
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const shares = new Map<string, Share>();
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function sharesFile(): string {
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return join(statsDir(), "shares.jsonl");
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}
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export function loadShares(): void {
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const file = sharesFile();
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if (!existsSync(file)) return;
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for (const line of readFileSync(file, "utf8").trim().split("\n")) {
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if (!line) continue;
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try {
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const s = JSON.parse(line) as Share;
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if (s.id) shares.set(s.id, s);
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} catch {
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// A torn tail line loses one share, never the server.
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}
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}
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}
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export function mintShare(roomId: string, turn: number): Share {
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// One link per (room, turn): sharing the same turn twice hands back
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// the same slug, so a re-share never splits an audience.
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for (const s of shares.values()) {
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if (s.roomId === roomId && s.turn === turn) return s;
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}
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let id = "";
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for (let i = 0; i < SHARE_ID_LENGTH; i++) {
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id += SHARE_ALPHABET[randomInt(SHARE_ALPHABET.length)];
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}
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const share: Share = { id, roomId, turn, createdAt: new Date().toISOString() };
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shares.set(id, share);
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appendFileSync(sharesFile(), JSON.stringify(share) + "\n", "utf8");
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return share;
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}
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export function getShare(id: string): Share | undefined {
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return shares.get(id);
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}
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