function merge_pdf_metadata($pdf_ids, $path)
{
if (count($pdf_ids) < 2) {
err_bad_input_format("expected at least 2 pdf ids");
}
// validate pdf arguments and gather merged pdf attributes
$attributes = array();
$tags = array();
$total_pages = 0;
foreach ($pdf_ids as $pdf_id) {
$pdf = get_pdf_info($pdf_id);
if (!$pdf) {
err_bad_input_data('pdfid', $pdf_id, 'not a valid pdf id');
}
if (!isset($attributes['title']) && $pdf['title']) {
$attributes['title'] = $pdf['title'];
}
if (!isset($attributes['date']) && $pdf['date']) {
$attributes['date'] = $pdf['date'];
}
if (!isset($attributes['origin']) && $pdf['origin']) {
$attributes['origin'] = $pdf['origin'];
}
if (!isset($attributes['recipient']) && $pdf['recipient']) {
$attributes['recipient'] = $pdf['recipient'];
}
$tags = array_unique(array_merge($tags, find_tags_for_pdf($pdf_id)));
}
foreach ($pdf_ids as $pdf_id) {
delete_pdf_metadata($pdf_id);
}
$new_id = add_pdf_to_db($path, $attributes);
foreach ($tags as $tag) {
tag_pdf($new_id, $tag);
}
if (!$new_id) {
err_internal("could not insert merged file to db");
}
return $new_id;
}
// it already has a db record
$attributes = get_pdf_info($id);
if ($attributes['md5'] != $md5) {
// ...with an incorrect md5 value, correct it.
unset($attributes['id']);
echo "fixing md5 info: {$id}: {$path} \n";
$attributes['md5'] = $md5;
print_r($attributes);
update_pdf_info($id, $attributes);
}
} else {
// it has no db record... insert it
echo "inserting: {$path} \n";
$attributes = array('md5' => $md5);
print_r($attributes);
add_pdf_to_db($path, $attributes);
}
}
}
$orphans = array();
// check every existing db record
foreach (find_pdfs_all() as $pdf_id) {
$pdf = get_pdf_info($pdf_id);
if ($pdf) {
$path = $pdf['path'];
$cpath = canonicalize_path($path);
if (!file_exists(get_full_path($path))) {
// the file was deleted. keep the data, but make it an orphan (no path)
echo "*** file {$cpath} doesn't exist! adding to orphans list\n";
$orphans[] = $pdf_id;
} else {