function shrinktheweb_getCachedThumbnail in ShrinkTheWeb 7

Same name and namespace in other branches

1. 8 shrinktheweb.api.inc \shrinktheweb_getCachedThumbnail()
2. 6 shrinktheweb.api.inc \shrinktheweb_getCachedThumbnail()

Get a thumbnail, caching it first if possible

1 call to shrinktheweb_getCachedThumbnail()

shrinktheweb_getThumbnail in ./shrinktheweb.api.inc

Gets the thumbnail for the specified website, stores it in the cache, and then returns the relative path to the cached image.

File

./shrinktheweb.api.inc, line 244

Code

function shrinktheweb_getCachedThumbnail($aArgs = null) {
  $aArgs = is_array($aArgs) ? $aArgs : array();

  // Use arguments to work out the target filename
  $sFilename = shrinktheweb_generateHash($aArgs) . '.jpg';
  $sFile = THUMBNAIL_DIR . $sFilename;
  $sReturnName = false;

  // Work out if we need to update the cached thumbnail
  $iForceUpdate = $aArgs['stwredo'] ? true : false;
  if ($iForceUpdate || shrinktheweb_cacheFileExpired($sFile)) {

    // if bandwidth limit has reached return the BANDWIDTH_IMAGE
    if (shrinktheweb_checkLimitReached(THUMBNAIL_DIR . BANDWIDTH_IMAGE)) {
      $sFilename = BANDWIDTH_IMAGE;

      // if quota limit has reached return the QUOTA_IMAGE
    }
    else {
      if (shrinktheweb_checkLimitReached(THUMBNAIL_DIR . QUOTA_IMAGE)) {
        $sFilename = QUOTA_IMAGE;

        // if WAY OVER the limits (i.e. request is ignored by STW) return the NO_RESPONSE_IMAGE
      }
      else {
        if (shrinktheweb_checkLimitReached(THUMBNAIL_DIR . NO_RESPONSE_IMAGE)) {
          $sFilename = NO_RESPONSE_IMAGE;
        }
        else {

          // check if the thumbnail was captured
          $aImage = shrinktheweb_checkWebsiteThumbnailCaptured($aArgs);
          switch ($aImage['status']) {
            case 'save':

              // download the image to local path
              shrinktheweb_downloadRemoteImageToLocalPath($aImage['url'], $sFile);
              break;
            case 'nosave':

              // dont save the image but return the url
              return $aImage['url'];
              break;
            case 'quota_exceed':

              // download the image to local path for locking requests
              $sFilename = QUOTA_IMAGE;
              $sFile = THUMBNAIL_DIR . $sFilename;
              shrinktheweb_downloadRemoteImageToLocalPath($aImage['url'], $sFile);
              break;
            case 'bandwidth_exceed':

              // download the image to local path for locking requests
              $sFilename = BANDWIDTH_IMAGE;
              $sFile = THUMBNAIL_DIR . $sFilename;
              shrinktheweb_downloadRemoteImageToLocalPath($aImage['url'], $sFile);
              break;
            default:

              // otherwise return the status
              return $aImage['status'];
          }
        }
      }
    }
  }
  $sFile = THUMBNAIL_DIR . $sFilename;

  // Check if file exists
  if (file_exists($sFile)) {
    $sReturnName = THUMBNAIL_URI . $sFilename;
  }
  return $sReturnName;
}