<?php

function nexus_news_add($insert_arr)
{
	global $nexus_cfg, $nexusdb;
	
	$insert_key_arr = array();
	$insert_val_arr = array();

	reset($insert_arr);
	while (list($key, $val) = each($insert_arr))
	{
		$insert_key_arr[] = mysql_real_escape_string(trim($key));
		$insert_val_arr[] = mysql_real_escape_string(trim($val));
	}
	
	$sql = "INSERT INTO `%s` (`%s`, `create_time`, `last_modified`) VALUES ('%s', NOW(), NOW()) ";
	$sql = sprintf($sql, $nexus_cfg["table"]["news"], implode("`,`", $insert_key_arr), implode("','", $insert_val_arr));

	$nexusdb->query($sql);
	$news_id = $nexusdb->insert_id;
	
	return $news_id;
}

function nexus_news_update($news_id, $update_arr)
{
	global $nexus_cfg, $nexusdb;

	$update_clause = "";
	
	reset($update_arr);
	while (list($key, $val) = each($update_arr))
	{
		$update_clause .= (($update_clause=="")?"":", ") . sprintf("`%s` = '%s' ", mysql_real_escape_string(trim($key)), mysql_real_escape_string(trim($val)));
	}
	
	$sql = "UPDATE `%s` SET %s, `last_modified` = NOW() WHERE `news_id` = %d ";
	$sql = sprintf($sql, $nexus_cfg["table"]["news"], $update_clause, $news_id);
	
	$num_rows_affected = $nexusdb->query($sql);
	return $num_rows_affected;
}

function nexus_news_delete($news_id)
{
	global $nexus_cfg, $nexusdb;
	
	$news_row = nexus_news_get_row($news_id);
	
	// delete files
	if (trim($news_row->file_path) != "")
	{
		@unlink($_SERVER["DOCUMENT_ROOT"] . $news_row->file_path);
	}
	if (trim($news_row->thumbnail) != "")
	{
		@unlink($_SERVER["DOCUMENT_ROOT"] . $news_row->thumbnail);
	}
	$news_dir = sprintf($nexus_cfg["path"]["uploaded_news"]."/", ($news_id % 10), $news_id);
	if (is_dir($news_dir))
	{
		@unlink($news_dir);
	}
	
	// delete db record
	$sql = "DELETE FROM `%s` WHERE `news_id` = %d ";
	$sql = sprintf($sql, $nexus_cfg["table"]["news"], $news_id);
	
	$nexusdb->query($sql);
	
	return;
	
}

function nexus_news_get_row($id)
{
	global $nexus_cfg, $nexusdb;
	
	settype($id, "integer");
	if ($id < 1)
	{
		return false;
	}
	
	$sql = "SELECT * FROM `%s` WHERE `news_id` = %d ";
	$sql = sprintf($sql, $nexus_cfg["table"]["news"], mysql_real_escape_string(trim($id)));
	
	$news = $nexusdb->get_results($sql);
	if (count($news) < 1)
	{
		return false;
	}
	return $news[0];
}

function nexus_news_get_list($search_info, &$total, &$result, $order_clause, $page=0, $page_size=0)
{
	global $nexus_cfg, $nexusdb;
	
	$total	= 0;
	$result	= array();
	
	$where_clause = "";
	$table_clause = $nexus_cfg["table"]["news"] . " n ";
	
	if (is_array($search_info) && count($search_info) > 0)
	{
		if (isset($search_info["keyword"]))
		{
			$keyword = mysql_real_escape_string(trim($search_info["keyword"]));
			if ($keyword != "")
			{
				$where_clause .= sprintf(" (`title_zh` LIKE '%%%s%%' OR `title_en` LIKE '%%%s%%' OR `title_cn` LIKE '%%%s%%' ) ", $keyword, $keyword, $keyword);
			}
			unset($search_info["keyword"]);
		}
				
		reset($search_info);
		while (list($key, $val) = each($search_info))
		{
			$where_clause .= (($where_clause=="")?"":" AND ") . sprintf("`%s` = '%s' ", mysql_real_escape_string(trim($key)), mysql_real_escape_string(trim($val))) ;
		}
	}
	if ($where_clause != "")
	{
		$where_clause = sprintf("WHERE %s", $where_clause);
	}
	
	$sql = "SELECT COUNT(*) AS total FROM %s %s";
	$sql = sprintf($sql, $table_clause, $where_clause);

	$news_total = $nexusdb->get_results($sql);
	if (count($news_total) < 1)
	{
		return false;
	}
	$news_total_row = $news_total[0];
	$total = $news_total_row->total;
	
	if ($order_clause == "")
	{
		$order_clause = "ORDER BY order_id ASC, create_time DESC ";
	}
	
	$limit_clause = "";
	if ($page_size > 0)
	{
		$offset = ($page - 1) * $page_size;
		$limit_clause = sprintf("LIMIT %d, %d", $offset, $page_size);
	}
	
	$sql = "SELECT n.* FROM %s %s %s %s";
	$sql = sprintf($sql, $table_clause, $where_clause, $order_clause, $limit_clause);
	
	$result = $nexusdb->get_results($sql);
	
}

function nexus_news_upload_file($news_id, $file_type, $file_info, $existing_file='')
{
	global $nexus_cfg, $_SERVER;
	
	$upload_path = '';
	if (file_exists($file_info['tmp_name']))	{

		if ($existing_file != "")	{
			$uploaded_upload_path = $_SERVER['DOCUMENT_ROOT'] . $existing_file;
			if (file_exists($uploaded_upload_path))	{
				unlink($uploaded_upload_path);
			}
		}

		$target_path = sprintf($nexus_cfg["path"]["uploaded_news"]."/", ($news_id%10), $news_id);
		$new_file_path = $target_path . basename($file_info['name']);
		
		// check directory
		if (!is_dir($target_path))
		{
			mkdir($target_path);
		}

		$new_file_info = pathinfo(basename($file_info["name"]));
		while (file_exists($new_file_path))	{
			$new_file_path = sprintf("%s%s_%s.%s", $target_path, $file_type, unique(), $new_file_info["extension"]);
		}

		if (move_uploaded_file($file_info['tmp_name'], $new_file_path))	{
			$upload_path = str_replace($_SERVER['DOCUMENT_ROOT'], '', $new_file_path);
		}
	}
	
	return $upload_path;
	
}

?>