<?php

use EesyPHP\Auth;
use EesyPHP\Db;
use EesyPHP\Log;
use EesyPHP\Tpl;
use EesyPHP\Url;

use MySC\Db\Category;
use MySC\Db\SCase;
use MySC\Db\Thing;

use function EesyPHP\vardump;
use function EesyPHP\generate_uuid;

if (php_sapi_name() == "cli")
  return true;

/**
 * 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', null, false);

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

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');

/**
 * Sync data
 * @param EesyPHP\UrlRequest $request
 * @return void
 */
function handle_sync($request) {
  $data = json_decode($_POST["data"], true);
  Log::debug("Sync scases data: %s", vardump($data["scases"]));
  $user = Auth::user();
  $updated = false;
  $db_scases = SCase :: list(['username' => $user -> username]);
  foreach($data["scases"] as $scase_uuid => $scase_data) {
    Log::debug("sync(): scase %s", $scase_uuid);
    $scase = Scase :: from_json($scase_data, $user);
    if (array_key_exists($scase_uuid, $db_scases)) {
      Log::debug("sync(): scase %s exist in DB", $scase_uuid);
      $db_scases[$scase_uuid] -> sync($scase, $updated);
      // @phpstan-ignore-next-line
      $db_categories = $db_scases[$scase_uuid] -> categories();
    }
    else {
      Log::debug("sync(): scase %s does not exist in DB, create it", $scase_uuid);
      $scase -> save();
      $updated = true;
      $db_categories = [];
    }

    foreach($scase_data['cats'] as $category_uuid => $category_data) {
      Log::debug("sync(): scase %s / category %s", $scase_uuid, $category_uuid);
      $category = Category :: from_json($category_data, $scase);
      if (array_key_exists($category_uuid, $db_categories)) {
        Log::debug("sync(): scase %s / category %s exists in DB, sync it", $scase_uuid, $category_uuid);
        $db_categories[$category_uuid] -> sync($category, $updated);
        $db_things = $db_categories[$category_uuid] ->things();
      }
      else {
        Log::debug("sync(): scase %s / category %s does not exists in DB, create it", $scase_uuid, $category_uuid);
        $category -> save();
        $updated = true;
        $db_things = [];
      }

      foreach($category_data['things'] as $thing_uuid => $thing_data) {
        $thing = Thing :: from_json($thing_data, $category);
        if (array_key_exists($thing_uuid, $db_things)) {
          $db_things[$thing_uuid] -> sync($thing, $updated);
        }
        else {
          $thing -> save();
          $updated = true;
        }
      }
    }
  }

  $data = [
    "scases" => [],
    "updated" => $updated,
  ];
  foreach (SCase :: list(['username' => $user -> username]) as $uuid => $scase) {
    $data["scases"][$uuid] = $scase -> to_json();
  }
  Tpl::display_ajax_return($data);
}
Url :: add_url_handler("#^sync$#", 'handle_sync', null, true, true, true);

/**
 * Support info page
 * @param EesyPHP\UrlRequest $request
 * @return void
 */
function handle_support_info($request) {
  if (isset($_REQUEST['download'])) {
    header('Content-Type: text/plain');
    header('Content-disposition: attachment; filename="'.date('Ymd-His-').Auth::user()->username.'-aide-support.txt"');
  }
  Tpl :: display(
    isset($_REQUEST['download'])?
    'support_info_content.tpl':"support_info.tpl",
    "Page d'aide à l'assistance utilisateurs"
  );
}
Url :: add_url_handler('|^support/?$|', 'handle_support_info');

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