<?php
if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');

function parse_fract( $f )
{
  $nd = explode( '/', $f );
  return $nd[0]/$nd[1];
}

function parse_lat_lon( $arr )
{
  $v=0;
  $v += parse_fract( $arr[0] );
  $v += parse_fract( $arr[1] )/60;
  $v += parse_fract( $arr[2] )/3600;
  return $v;
}

if ( isset($_POST['submit']) )
  $sync_options = array(
    'simulate' => isset($_POST['simulate']),
		'use_high' => isset($_POST['use_high']),
    'cat_id' => isset($_POST['cat_id']) ? (int)$_POST['cat_id'] : 0,
    'subcats_included' => isset($_POST['subcats_included']),
    );
else
  $sync_options = array(
    'simulate' => true,
		'use_high' => true,
    'cat_id' => 0,
    'subcats_included' => true,
    );


if ( isset($_POST['submit']) )
{
	include_once(PHPWG_ROOT_PATH.'include/functions_picture.inc.php');

  $where_clauses = array();
  if ( $sync_options['cat_id']!=0 )
  {
    $query='
SELECT id FROM '.CATEGORIES_TABLE.'
  WHERE ';
    if ( $sync_options['subcats_included'])
      $query .= 'uppercats REGEXP \'(^|,)'.$sync_options['cat_id'].'(,|$)\'';
    else
      $query .= 'id='.$sync_options['cat_id'];
    $cat_ids = array_from_query($query, 'id');

    $query='
SELECT id,path,lat,lon,has_high
  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id=image_id
  WHERE category_id IN ('.implode(',', $cat_ids).')
  GROUP BY id';
  }
  else
  {
    $query='
SELECT id,path,lat,lon,has_high
  FROM '.IMAGES_TABLE;
  }

  $images = hash_from_query( $query, 'id');
  $datas = array();
  $errors = array();
  foreach ($images as $image)
  {
		$filename = $image['path'];
		if ($sync_options['use_high'] and $image['has_high']=='true')
			$filename = get_high_path($image);
		$exif = @read_exif_data( $filename );
		if ( empty($exif) )
			continue;
		$exif = array_intersect_key( $exif, array_flip( array('GPSLatitudeRef', 'GPSLatitude', 'GPSLongitudeRef', 'GPSLongitude') ) );
		if ( count($exif)!=4 )
			continue;
		if ( !in_array($exif['GPSLatitudeRef'], array('S', 'N') ) )
		{
			$errors[] = $filename. ': GPSLatitudeRef not S or N';
			continue;
		}
		if ( !in_array($exif['GPSLongitudeRef'], array('W', 'E') ) )
		{
			$errors[] = $filename. ': GPSLongitudeRef not W or E';
			continue;
		}
		if (!is_array($exif['GPSLatitude']) or !is_array($exif['GPSLongitude']) )
		{
			$errors[] = $filename. ': GPSLatitude and GPSLongitude are not arrays';
			continue;
		}
		$lat = parse_lat_lon( $exif['GPSLatitude'] );
		if ( $exif['GPSLatitudeRef']=='S' )
			$lat = -$lat;
		$lon = parse_lat_lon( $exif['GPSLongitude'] );
		if ( $exif['GPSLongitudeRef']=='W' )
			$lon = -$lon;
		$datas[] = array (
			'id' => $image['id'],
			'lat' => $lat,
			'lon' => $lon,
			);
  }
  $template->assign( 'sync_errors', $errors );

  if ( count($datas)>0 and !$sync_options['simulate'] )
  {
    mass_updates(
        IMAGES_TABLE,
        array(
          'primary' => array('id'),
          'update'  => array('lat', 'lon')
        ),
        $datas
      );
    rvm_invalidate_cache();
  }

  $template->assign(
    'metadata_result',
    array(
      'NB_ELEMENTS_DONE' => count($datas),
      'NB_ELEMENTS_CANDIDATES' => count($images),
      'NB_ERRORS' => count($errors),
      ));

}


$query = '
SELECT id,
  CONCAT(name, IF(dir IS NULL, " (V)", "") ) AS name,
  uppercats, global_rank
  FROM '.CATEGORIES_TABLE;
display_select_cat_wrapper($query,
                           array( $sync_options['cat_id'] ),
                           'categories',
                           false);
$template->assign(
    array(
      'SUBCATS_INCLUDED_CHECKED' => $sync_options['subcats_included'] ? 'checked="checked"' : '',
			'USE_HIGH_CHECKED' => $sync_options['use_high'] ? 'checked="checked"' : ''
    )
  );

?>