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import { log } from "../core/utils/log.ts";import { localIp } from "../core/utils/net.ts";import { setEnv } from "../core/utils/env.ts";import Server from "../core/server.ts";import { SiteWatcher } from "../core/watcher.ts";import logger from "../middlewares/logger.ts";import noCache from "../middlewares/no_cache.ts";import notFound from "../middlewares/not_found.ts";import reload from "../middlewares/reload.ts";import { createSite } from "./run.ts";
/** Build the website and optionally watch changes and serve the site */export async function build(  config: string | undefined,  serve?: boolean,  watch?: boolean,) {  const site = await createSite(config);
  performance.mark("start");  await site.build();  performance.mark("end");
  log.info(`🍾 Site built into <gray>${site.options.dest}</gray>`);  const duration = performance.measure("duration", "start", "end").duration /    1000;  const total = site.pages.length + site.files.length;  log.info(    `  <gray>${total} files generated in ${duration.toFixed(2)} seconds</gray>`,  );
  if (!serve && !watch) {    // Prevent possible timers to keep the process alive forever (wait preventively 10 seconds)    const id = setTimeout(() => {      log.warn(        "After waiting 10 seconds, there are some timers that avoid ending the process.",      );      log.warn("They have been forcibly closed.");      Deno.exit(0);    }, 10000);
    Deno.unrefTimer(id);    return;  }
  // Set the live reload environment variable to add hash to the URLs in the module loader  setEnv("LUME_LIVE_RELOAD", "true");
  // Start the watcher  const watcher = site.getWatcher();
  watcher.addEventListener("change", (event) => {    const files = event.files!;
    log.info("Changes detected:");    files.forEach((file) => log.info(`- <gray>${file}</gray>`));    return site.update(files);  });
  watcher.addEventListener("error", (event) => {    console.error(Deno.inspect(event.error, { colors: true }));  });
  watcher.start();
  if (!serve) {    return;  }
  // Start the local server  const { port, open, page404, middlewares } = site.options.server;  const root = site.options.server.root || site.dest();  const server = new Server({ root, port });
  server.addEventListener("start", () => {    const ipAddr = localIp();
    log.info("  Server started at:");    log.info(`  <green>http://localhost:${port}/</green> (local)`);
    if (ipAddr) {      log.info(`  <green>http://${ipAddr}:${port}/</green> (network)`);    }
    if (open) {      const commands: Record<typeof Deno.build.os, string> = {        darwin: "open",        linux: "xdg-open",        freebsd: "xdg-open",        netbsd: "xdg-open",        aix: "xdg-open",        solaris: "xdg-open",        illumos: "xdg-open",        windows: "explorer",      };
      new Deno.Command(commands[Deno.build.os], {        args: [`http://localhost:${port}/`],        stdout: "inherit",        stderr: "inherit",      }).output();    }
    site.dispatchEvent({ type: "afterStartServer" });  });
  if (log.level === 0) {    server.use(logger());  }
  server.use(    reload({ watcher: new SiteWatcher(site) }),    noCache(),    notFound({      root,      page404,      directoryIndex: true,    }),  );
  if (middlewares) {    server.use(...middlewares);  }
  server.start();}