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<?php

function start_file_download($user, $path){

	$db = $GLOBALS["db"];

	$owner = user_id($db, $user);

	$file_id = select_file_id($db, $owner, $path)

/*	$file_id_db = $db->query("SELECT id, owner, share FROM files WHERE parent=" . $folder_id . ");
	$file_id_ar = $file_id_db->fetchArray(SQLITE3_NUM);
	$file_id = $file_id_ar[0];

	$check_verification_db = $
	$check_verification_ar[1];
	$share = $check_verification_ar[2];


	if($_SESSION["login"] && ($_SESSION["userid"] == $file_owner)){
		$var = download_file($db, $file_id);
	} else {
		if($share != "PUBLIC"){
			return false;
		}

		$var = download_file($db, $file_id);
	}
*/

	$var = download_file($db, $file_id);

	return $var;
}

function check_file_hash($db, $file_id, $download_hash){
	$check_hash_db = $db->query("SELECT share FROM files WHERE id=" . SQLite3::escapeString($file_id).";");
	$check_hash_ar = $check_hash_db->fetchArray(SQLITE3_NUM);

	if(($check_hash_ar[0] != "PUBLIC") || ($check_hash_ar[0] != $download_hash)){
		return false;
	}

	$var = download_file($db, $file_id);
	return $var;

}

function download_file($db, $file_id){

	$file_db = $db->query("SELECT name, mime, hash FROM files WHERE id=". SQLite3::escapeString($file_id).";");
	$file_ar = $file_db->fetchArray(SQLITE3_NUM);
	$file_name = $file_ar[0];
	$file_mime = $file_ar[1];
	$file_hash = $file_ar[2];

	$uploaddir = "../files/";
	$gzip_file = $uploaddir . $file_hash . ".gz";
	$fp = gzopen($gzip_file, '') // TODO: DECOMPRESS CONSTANT

	//TODO GZIP DECOMPRESSION

	//TODO set HTTP HEADER

	return true;

}