73 lines
2.4 KiB
TypeScript
73 lines
2.4 KiB
TypeScript
import { join } from "jsr:@std/path";
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import { serveDir } from "jsr:@std/http/file-server";
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const root = import.meta.dirname ?? ".";
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const port = Number(Deno.env.get("PORT") ?? "8080");
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function trimPathLine(line: string): string {
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let s = line.trim();
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if (!s || s.startsWith("#")) return "";
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if ((s.startsWith('"') && s.endsWith('"')) || (s.startsWith("'") && s.endsWith("'"))) {
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s = s.slice(1, -1);
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}
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return s.trim();
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}
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/** Optional one-line file next to this script: absolute path to `ChatRequest/Database.json`. */
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function readOptionalPathFile(): string | undefined {
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try {
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const pathFile = join(root, "chat-request-database.path");
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const raw = Deno.readTextFileSync(pathFile);
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for (const line of raw.split(/\r?\n/)) {
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const p = trimPathLine(line);
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if (p) return p;
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}
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} catch {
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// missing or unreadable
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}
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return undefined;
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}
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const chatRequestDatabase =
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Deno.env.get("CHAT_REQUEST_DATABASE")?.trim() || readOptionalPathFile();
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function isChatRequestFilename(pathname: string): boolean {
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const base = pathname.split("/").pop() ?? "";
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return base === "ChatRequest.json" || base === "database.json";
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}
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Deno.serve({ port, hostname: "127.0.0.1" }, async (req) => {
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const url = new URL(req.url);
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if (req.method === "GET" && chatRequestDatabase && isChatRequestFilename(url.pathname)) {
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try {
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let text = await Deno.readTextFile(chatRequestDatabase);
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if (text.charCodeAt(0) === 0xfeff) text = text.slice(1);
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return new Response(text, {
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headers: {
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"Content-Type": "application/json; charset=utf-8",
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"Cache-Control": "no-store",
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},
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});
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} catch (e) {
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if (e instanceof Deno.errors.NotFound) {
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console.error(`CHAT_REQUEST_DATABASE not found: ${chatRequestDatabase}`);
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return new Response(null, { status: 404 });
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}
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const msg = e instanceof Error ? e.message : String(e);
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console.error(`CHAT_REQUEST_DATABASE read error (${chatRequestDatabase}): ${msg}`);
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return new Response(`Failed to read CHAT_REQUEST_DATABASE: ${msg}\n`, { status: 500 });
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}
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}
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return serveDir(req, { fsRoot: root, showDirListing: false });
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});
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console.log(`Overlay: http://127.0.0.1:${port}/index.html`);
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if (chatRequestDatabase) {
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console.log(`Chat request database file: ${chatRequestDatabase}`);
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} else {
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console.warn(
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"No database path: set CHAT_REQUEST_DATABASE or create chat-request-database.path (see README). " +
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"Otherwise /ChatRequest.json is only served from this folder if the file exists.",
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);
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}
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