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import { RouteConfig } from "$fresh/server.ts";import { Handlers } from "$fresh/server.ts";import { parse } from "$std/semver/mod.ts";import VERSIONS from "../../versions.json" assert { type: "json" };
const BASE_URL = "https://raw.githubusercontent.com/denoland/fresh/";
export const handler: Handlers = {  async GET(req, ctx) {    const accept = req.headers.get("Accept");    const isHTML = accept?.includes("text/html");    const { version, path } = ctx.params;
    const semver = parse(version, { includePrerelease: true });    if (!semver) {      return new Response("Invalid version", { status: 400 });    }
    if (!VERSIONS.includes(semver.version)) {      return new Response("Version not found", { status: 404 });    }
    const url = `${BASE_URL}${semver.version}/${path}`;    const r = await fetch(url, { redirect: "manual" });    const response = new Response(r.body, r);    response.headers.delete("content-encoding");
    if (response.status === 404) {      return new Response(        "404: Not Found. The requested fresh release or file do not exist.",        { status: 404 },      );    }
    if (!response.ok) {      response.headers.set("Content-Type", "text/plain");      return response;    }
    if (isHTML) {      response.headers.set("Content-Type", "text/plain");    } else if (path.endsWith(".ts")) {      response.headers.set("Content-Type", "application/typescript");    } else if (path.endsWith(".js")) {      response.headers.set("Content-Type", "application/javascript");    } else if (path.endsWith(".tsx")) {      response.headers.set("Content-Type", "text/tsx");    } else if (path.endsWith(".jsx")) {      response.headers.set("Content-Type", "text/jsx");    } else if (path.endsWith(".json")) {      response.headers.set("Content-Type", "application/json");    } else if (path.endsWith(".wasm")) {      response.headers.set("Content-Type", "application/wasm");    } else {      response.headers.set("Content-Type", "text/plain");    }    return response;  },};
export const config: RouteConfig = {  routeOverride: "/@:version/:path*",};