public function upload_document($docj, PaperOption $o)
{
global $Conf;
// look for an existing document with same sha1;
// check existing docid's sha1
$docid = get($docj, "docid");
if ($docid) {
$oldj = $this->document_to_json($o->id, $docid);
if (get($docj, "sha1") && get($oldj, "sha1") !== $docj->sha1) {
$docid = null;
}
} else {
if (!$docid && $this->paperid > 0 && get($docj, "sha1")) {
$result = Dbl::qe("select paperStorageId from PaperStorage where paperId=? and documentType=? and sha1=?", $this->paperid, $o->id, $docj->sha1);
if ($row = edb_row($result)) {
$docid = $row[0];
}
}
}
if ($docid) {
$docj->docid = $docid;
return;
}
// check filter
if (get($docj, "filter") && is_int($docj->filter)) {
if (is_int(get($docj, "original_id"))) {
$result = Dbl::qe("select paperStorageId, timestamp, sha1 from PaperStorage where paperStorageId=?", $docj->original_id);
} else {
if (is_string(get($docj, "original_sha1"))) {
$result = Dbl::qe("select paperStorageId, timestamp, sha1 from PaperStorage where paperId=? and sha1=?", $this->paperid, $docj->original_sha1);
} else {
if ($o->id == DTYPE_SUBMISSION || $o->id == DTYPE_FINAL) {
$result = Dbl::qe("select PaperStorage.paperStorageId, PaperStorage.timestamp, PaperStorage.sha1 from PaperStorage join Paper on (Paper.paperId=PaperStorage.paperId and Paper." . ($o->id == DTYPE_SUBMISSION ? "paperStorageId" : "finalPaperStorageId") . "=PaperStorage.paperStorageId) where Paper.paperId=?", $this->paperid);
} else {
$result = null;
}
}
}
if ($row = edb_orow($result)) {
$docj->original_id = (int) $row->paperStorageId;
$docj->original_timestamp = (int) $row->timestamp;
$docj->original_sha1 = $row->sha1;
if (get($docj, "preserve_timestamp")) {
$docj->timestamp = (int) $docj->original_timestamp;
}
} else {
unset($docj->original_id);
}
}
// if no sha1 match, upload
$docclass = new HotCRPDocument($o->id);
$upload = null;
if ($docclass->load($docj)) {
$upload = $docclass->upload($docj, (object) array("paperId" => $this->paperid));
}
if ($upload && get($upload, "paperStorageId") > 1) {
foreach (array("size", "sha1", "mimetype", "timestamp") as $k) {
$docj->{$k} = $upload->{$k};
}
$this->uploaded_documents[] = $docj->docid = $upload->paperStorageId;
} else {
$docj->docid = 1;
$this->set_option_error_html($o, $upload ? $upload->error_html : "empty document");
}
}
