function serveAsset($request, $assets, String $assetPath) {
    set $served = http_serve_static_as(
        $request,
        $assets,
        $assetPath,
        200,
        "public, max-age=300"
    );
    if ($served = false) {
        http_respond($request, 404, "text/plain; charset=utf-8", "Not Found");
    }
    return 0;
}

function serveStatus($request) {
    http_respond(
        $request,
        200,
        "application/json; charset=utf-8",
        json_encode([
            "runtime_stats": runtime_stats(),
            "profile_snapshot": profile_snapshot()
        ])
    );
    return 0;
}

function serveHealth($request) {
    http_respond(
        $request,
        200,
        "text/plain; charset=utf-8",
        "ok"
    );
    return 0;
}

function serveRobots($request) {
    set String $body = "User-agent: *\n";
    $body = $body + "Allow: /\n\n";
    $body = $body + "Sitemap: https://graylanguage.com/sitemap.xml\n";
    http_respond_headers(
        $request,
        200,
        "text/plain; charset=utf-8",
        $body,
        ["Cache-Control": "public, max-age=3600"]
    );
    return 0;
}

function serveSitemap($request) {
    set String $body = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
    $body = $body + "<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
    $body = $body + "  <url><loc>https://graylanguage.com/</loc></url>\n";
    $body = $body + "</urlset>\n";
    http_respond_headers(
        $request,
        200,
        "application/xml; charset=utf-8",
        $body,
        ["Cache-Control": "public, max-age=300"]
    );
    return 0;
}

function String docsRoot() {
    set String $root = env_get("GRAY_DOCS_ROOT");
    if ($root = "") {
        return "developer-docs";
    }
    return $root;
}

set String $root = docsRoot();
set $assets = static_open($root, 33554432);
set $examples = static_open($root + "/../examples", 8388608);
set String $host = env_get("GRAY_DOCS_HOST");
if ($host = "") {
    $host = "127.0.0.1";
}
set $server = tcp_listen($host, env_int("GRAY_DOCS_PORT", 8790));
http_configure($server, 1024, 30000, 2097152);
http_handler($server, "GET", "/", "serveAsset", [$assets, "/public/index.html"]);
http_handler($server, "HEAD", "/", "serveAsset", [$assets, "/public/index.html"]);
http_handler($server, "GET", "/styles.css", "serveAsset", [$assets, "/public/styles.css"]);
http_handler($server, "HEAD", "/styles.css", "serveAsset", [$assets, "/public/styles.css"]);
http_handler($server, "GET", "/app.js", "serveAsset", [$assets, "/public/app.js"]);
http_handler($server, "HEAD", "/app.js", "serveAsset", [$assets, "/public/app.js"]);
http_handler($server, "GET", "/favicon.svg", "serveAsset", [$assets, "/public/favicon.svg"]);
http_handler($server, "HEAD", "/favicon.svg", "serveAsset", [$assets, "/public/favicon.svg"]);
http_handler(
    $server,
    "GET",
    "/grayworth-symbol.svg",
    "serveAsset",
    [$assets, "/public/grayworth-symbol.svg"]
);
http_handler(
    $server,
    "HEAD",
    "/grayworth-symbol.svg",
    "serveAsset",
    [$assets, "/public/grayworth-symbol.svg"]
);
http_handler(
    $server,
    "GET",
    "/instrument-sans.ttf",
    "serveAsset",
    [$assets, "/public/instrument-sans.ttf"]
);
http_handler(
    $server,
    "HEAD",
    "/instrument-sans.ttf",
    "serveAsset",
    [$assets, "/public/instrument-sans.ttf"]
);
http_handler($server, "GET", "/robots.txt", "serveRobots", []);
http_handler($server, "HEAD", "/robots.txt", "serveRobots", []);
http_handler($server, "GET", "/sitemap.xml", "serveSitemap", []);
http_handler($server, "HEAD", "/sitemap.xml", "serveSitemap", []);
http_handler($server, "GET", "/api/status", "serveStatus", []);
http_handler($server, "GET", "/api/health", "serveHealth", []);
http_handler(
    $server,
    "GET",
    "/api/reference",
    "serveAsset",
    [$assets, "/generated/api.json"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/01-template.gy",
    "serveAsset",
    [$assets, "/tutorials/01-template.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/02-functions-and-collections.gy",
    "serveAsset",
    [$assets, "/tutorials/02-functions-and-collections.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/03-classes.gy",
    "serveAsset",
    [$assets, "/tutorials/03-classes.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/04-tasks-and-errors.gy",
    "serveAsset",
    [$assets, "/tutorials/04-tasks-and-errors.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/05-schemas.gy",
    "serveAsset",
    [$assets, "/tutorials/05-schemas.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/06-sqlite.gy",
    "serveAsset",
    [$assets, "/tutorials/06-sqlite.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/07-includes.gy",
    "serveAsset",
    [$assets, "/tutorials/07-includes.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/08-cache.gy",
    "serveAsset",
    [$assets, "/tutorials/08-cache.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/09-observability.gy",
    "serveAsset",
    [$assets, "/tutorials/09-observability.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/10-typed-sessions.gy",
    "serveAsset",
    [$assets, "/tutorials/10-typed-sessions.gy"]
);
http_handler(
    $server,
    "GET",
    "/tutorials/11-session-fabric.gy",
    "serveAsset",
    [$assets, "/tutorials/11-session-fabric.gy"]
);
http_handler(
    $server,
    "GET",
    "/guides/sessions.md",
    "serveAsset",
    [$assets, "/guides/sessions.md"]
);
http_handler(
    $server,
    "GET",
    "/guides/session-storage.md",
    "serveAsset",
    [$assets, "/guides/session-storage.md"]
);
http_handler(
    $server,
    "GET",
    "/guides/session-key-rotation.md",
    "serveAsset",
    [$assets, "/guides/session-key-rotation.md"]
);
http_handler(
    $server,
    "GET",
    "/guides/session-privacy.md",
    "serveAsset",
    [$assets, "/guides/session-privacy.md"]
);
http_handler(
    $server,
    "GET",
    "/session-demo/source.gy",
    "serveAsset",
    [$examples, "/session-fabric/app.gy"]
);
http_handler($server, "GET", "/source/server.gy", "serveAsset", [$assets, "/src/main.gy"]);
while (true) {
    http_run($server,-1);
}