import { eventHandler } from "h3";
import { defineNitroPlugin } from "./plugin.mjs";
const globalTiming = globalThis.__timing__ || {
  start: () => 0,
  end: () => 0,
  metrics: []
};
const timingMiddleware = eventHandler((event) => {
  const start = globalTiming.start();
  const _end = event.node.res.end;
  event.node.res.end = function(chunk, encoding, cb) {
    const metrics = [
      ["Generate", globalTiming.end(start)],
      ...globalTiming.metrics
    ];
    const serverTiming = metrics.map((m) => `-;dur=${m[1]};desc="${encodeURIComponent(m[0])}"`).join(", ");
    if (!event.node.res.headersSent) {
      event.node.res.setHeader("Server-Timing", serverTiming);
    }
    _end.call(event.node.res, chunk, encoding, cb);
    return this;
  }.bind(event.node.res);
});
export default defineNitroPlugin((nitro) => {
  nitro.h3App.stack.unshift({
    route: "/",
    handler: timingMiddleware
  });
});