<?php /* $Id$ */
/*
	Based on Leo West's (west_leo@yahooREMOVEME.com):
	lib.DB
	Database abstract layer
	-----------------------
	ADODB VERSION
	-----------------------
	A generic database layer providing a set of low to middle level functions
	originally written for WEBO project, see webo source for "real life" usages
*/
if (!(defined('DP_BASE_DIR'))) {
	die('You should not access this file directly.');
}

require_once(DP_BASE_DIR.'/lib/adodb/adodb.inc.php');

$db = NewADOConnection(dPgetConfig('dbtype'));

function db_connect($host='localhost', $dbname, $user='root', $passwd='', $persist=false) {
	global $db, $ADODB_FETCH_MODE;
	
	$ret_val = (($persist) ? $db->PConnect($host, $user, $passwd, $dbname) 
	            : $db->Connect($host, $user, $passwd, $dbname));
	if (!($ret_val)) {
		die('FATAL ERROR: Connection to database server failed');
	}
	
	$ADODB_FETCH_MODE=ADODB_FETCH_BOTH;
}

function db_error() {
	global $db;
	if (!(is_object($db))) {
		dprint(__FILE__,__LINE__, 0, 'Database object does not exist.');
	}
	return $db->ErrorMsg();
}

function db_errno() {
	global $db;
	if (!(is_object($db))) {
		dprint(__FILE__,__LINE__, 0, 'Database object does not exist.');
	}
	return $db->ErrorNo();
}

function db_insert_id() {
	global $db;
	if (!(is_object($db))) {
		dprint(__FILE__,__LINE__, 0, 'Database object does not exist.');
	}
	return $db->Insert_ID();
}

function db_exec($sql) {
	global $db;
	
	if (!(is_object($db))) {
		dprint(__FILE__,__LINE__, 0, 'Database object does not exist.');
	}
	$qid = $db->Execute($sql);
	dprint(__FILE__, __LINE__, 10, $sql);
	if ($msg = db_error()) {
		global $AppUI;
		dprint(__FILE__, __LINE__, 0, "Error executing: <pre>$sql</pre> ($msg)");
		// Useless statement, but it is being executed only on error, 
		// and it stops infinite loop.
		$db->Execute($sql);
		if (!(db_error())) {
			echo '<script language="JavaScript"> location.reload(); </script>';
		}
	}
	if (!($qid) && preg_match('/^\<select\>/i', $sql)) {
		dprint(__FILE__, __LINE__, 0, $sql);
	}
	return $qid;
}

function db_free_result($cur) {
	// TODO
	// mysql_free_result($cur);
	// Maybe it's done my Adodb
	if (!(is_object($cur))) {
		dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_free_result.');
	}
	$cur->Close();
}

function db_num_rows($qid) {
	if (!(is_object($qid))) {
	  dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_num_rows.');
	}
	return $qid->RecordCount();
	//return $db->Affected_Rows();
}

function db_fetch_row(&$qid) {
	if (!(is_object($qid))) {
		dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_fetch_row.');
	}
	return $qid->FetchRow();
}

function db_fetch_assoc(&$qid) {
	if (!(is_object($qid))) {
		dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_fetch_assoc.');
	}
	return $qid->FetchRow();
}

function db_fetch_array(&$qid ) {
	if (!(is_object($qid))) {
		dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_fetch_array.');
	}
	$result = $qid->FetchRow();
	// Ensure there are numerics in the result.
	if ($result && !(isset($result[0]))) {
		$ak = array_keys($result);
		foreach ($ak as $k => $v) {
			$result[$k] = $result[$v];
		}
	}
	return $result;
}

function db_fetch_object($qid ) {
	if (!(is_object($qid))) {
		dprint(__FILE__, __LINE__, 0, 'Invalid object passed to db_fetch_object.');
	}
	return $qid->FetchNextObject(false);
}

function db_escape($str) {
	global $db;
	return mb_substr($db->qstr($str), 1, -1);
}

function db_version() {
	return 'ADODB';
}

function db_unix2dateTime($time) {
	global $db;
	return $db->DBDate($time);
}

function db_dateTime2unix($time) {
	global $db;
	return $db->UnixDate($time);
	
	// TODO - check if it's used anywhere...
	/*
	if ($time == '0000-00-00 00:00:00') {
		return -1;
	}
	*/
}
?>
