laravel-naval-action-api-cache-controller.php

<?php
use Carbon\Carbon;

class ApiV1Controller extends BaseController {

  public $endpoints = array(
    'items' => 'https://storage.googleapis.com/nacleanopenworldprodshards/ItemTemplates_cleanopenworldprodeu2.json',
    'nations' => 'https://storage.googleapis.com/nacleanopenworldprodshards/Nations_cleanopenworldprodeu2.json',
    'ports' => 'https://storage.googleapis.com/nacleanopenworldprodshards/Ports_cleanopenworldprodeu2.json',
    'shops' => 'https://storage.googleapis.com/nacleanopenworldprodshards/Shops_cleanopenworldprodeu2.json',
  );


  /**
   * Helper for caching and whatnot. Decides the virtual server
   * date based on whether maintenance has already ocurred.
   *
   * @param Carbon|string $carbondate
   *   Optional Carbon date or date string to verify against.
   * @return string
   *   Y-m-d
   */
  public function _ServerDate($carbondate = '')
  {
    // Handle the Carbon argument first
    if(!($carbondate instanceof Carbon))
    {
      if(empty($carbondate))
      {
        $carbondate = Carbon::now('UTC');
      }
      else
      {
        $carbondate = new Carbon($carbondate);
      }
    }
 
    // Make sure its UTC
    if(!$carbondate->utc)
    {
      // This will update so that when asking for ->hour and ->minute it will say the correct numbers.
      $carbondate->timezone('UTC');
    }
 
    // Now lets figure out how the Carbon date compares to server maintenance.
    // For simplicitys sake, lets assume that by 07:50 UTC the data files have been updated.
    if($carbondate->hour >= 8 || ($carbondate->hour == 7 && $carbondate->minute >= 50))
    {
      $outputdate = Carbon::today('UTC');
    }
    else
    {
      $outputdate = Carbon::yesterday('UTC');
    }
 
    return $outputdate->toDateString();
  }
  public function getServerDate()
  {
    $date = $this->_ServerDate();
    return Response::JSON($date);
  }

  public function _DownloadEndpoint($url)
  {
    $content = file_get_contents($url);
    if($content !== null && is_string($content))
    {
      // Skip the Javascript stuff and extract the JSON-like data.
      $equalPos = strpos($content, '=');
      if($equalPos!==false)
      $content = trim(print_r(substr($content, $equalPos+1), true), ' ;');

      // Decode it into associative arrays
      $JSON = json_decode($content, TRUE);

      return $JSON;
    }
    // If we get this far we're pretty fucked.
    throw new Exception('Could not parse data file');
  }

  public function _GetData($endpoint)
  {
    $serverdate = $this->_ServerDate();
    $cache_key = 'apiv1-datafile-'.$serverdate.md5($endpoint);
    $cache_minutes = 1440; // 24h
    $cache_value = Cache::remember($cache_key, $cache_minutes, function() use ($endpoint)
    {
      $data = $this->_DownloadEndpoint($this->endpoints[$endpoint]);
      return $data;
    });
    return $cache_value;
  }

  public function getItems()
  {
    $output = $this->_GetData('items');
    return Response::JSON($output);
  }
  public function getNations()
  {
    $output = $this->_GetData('nations');
    return Response::JSON($output);
  }
  public function getPorts()
  {
    $output = $this->_GetData('ports');
    return Response::JSON($output);
  }
  public function getShops()
  {
    $output = $this->_GetData('shops');
    return Response::JSON($output);
  }

}