import { existsSync } from "node:fs";
import { join } from "node:path";
import { artifactsDir, mimeTypeFor, readAlias } from "./storage";
import { safeResolveArtifactFile } from "./publish";
function htmlResponse(status: number, title: string, body: string): Response {
return new Response(
`${title}${title}
${body}
`,
{
status,
headers: { "content-type": "text/html; charset=utf-8" },
},
);
}
export function createViewerHandler(dataRoot: string) {
return async function handleViewer(request: Request): Promise {
const url = new URL(request.url);
const pathname = url.pathname;
if (pathname === "/") {
return htmlResponse(200, "Heart of Gold Share Server", "Viewer surface is running.");
}
if (pathname.startsWith("/s/")) {
const parts = pathname.split("/").filter(Boolean);
const slug = parts[1];
const artifactRoot = join(artifactsDir(dataRoot), slug);
if (!slug || !existsSync(artifactRoot)) {
return htmlResponse(404, "Not Found", "Artifact not found.");
}
const relativePath = parts.length <= 2 ? "index.html" : parts.slice(2).join("/");
const filePath = safeResolveArtifactFile(artifactRoot, relativePath);
if (!filePath || !existsSync(filePath)) {
return htmlResponse(404, "Not Found", "Requested file not found.");
}
return new Response(Bun.file(filePath), {
headers: { "content-type": mimeTypeFor(filePath) },
});
}
if (pathname.startsWith("/latest/")) {
const parts = pathname.split("/").filter(Boolean);
const alias = parts[1];
if (!alias) return htmlResponse(404, "Not Found", "Alias not found.");
const slug = readAlias(dataRoot, alias);
if (!slug) return htmlResponse(404, "Not Found", "Alias not found.");
const remainder = parts.length <= 2 ? "" : `/${parts.slice(2).join("/")}`;
return Response.redirect(`/s/${slug}${remainder || "/"}`, 302);
}
return htmlResponse(404, "Not Found", "Unknown route.");
};
}