<?php

use EesyPHP\Tpl;
use EesyPHP\Url;

/**
 * Redirect to homepage
 * @param EesyPHP\UrlRequest $request
 * @return void
 */
function handle_redirect_homepage($request) {
  Url::redirect("home");
}
Url :: add_url_handler(null, 'handle_redirect_homepage');

/**
 * Homepage
 * @param EesyPHP\UrlRequest $request
 * @return void
 */
function handle_homepage($request) {
  Tpl :: display("index.tpl");
}
Url :: add_url_handler("#^home$#", 'handle_homepage');

function _list_static_directory_files($root_dir, $dir, &$result, &$last_updated) {
  foreach (array_diff(scandir($dir), array('.','..')) as $file) {
    $path = "$dir/$file";
    if (is_dir($path)) {
      _list_static_directory_files($root_dir, $path, $result, $last_updated);
    }
    else {
      $result[] = Tpl::static_url(substr($path, strlen($root_dir)+1));
      $file_last_updated = filemtime($path);
      if ($file_last_updated > $last_updated)
        $last_updated = $file_last_updated;
    }
  }
}

/**
 * Cache manifest file
 * @param EesyPHP\UrlRequest $request
 * @return void
 */
function handle_cache_manifest($request) {
  $cache = ["home"];
  $last_updated = filemtime(Tpl::resolve_templates_path("index.tpl"));
  foreach (Tpl::static_directories() as $static_directory)
    _list_static_directory_files($static_directory, $static_directory, $cache, $last_updated);
  Tpl::assign("cache", $cache);
  Tpl::assign("last_updated", date("Y/m/d H:i:s", $last_updated));
  header("Content-type: text/plain");
  $content = Tpl::fetch("cache_manifest.tpl");
  $etag = md5($content);
  header("Cache-Control: max-age=3000, must-revalidate");
  header("Last-Modified: ".gmdate("D, d M Y H:i:s", $last_updated)." GMT");
  header("Etag: $etag");
  print($content);
  exit();
}
Url :: add_url_handler("#^cache\.manifest$#", 'handle_cache_manifest');

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