<?php
class message
{
	function __construct()
	{
		
	}
	
	
	static function post($db,$pid,$rid,$title,$msg){
		$rev = array();
		try{
			$sql = "INSERT INTO messages_content (body) values ('$msg') RETURNING id";
			$sth = $db->prepare($sql);
			$sth->execute();
			$msgbody = $sth->fetch(PDO::FETCH_ASSOC);
			$msgid = $msgbody['id'];
			if(!is_array($rid))
			{
				$sql = "INSERT INTO messages (pid,rid,msgid,title) VALUES ('$pid','$rid','$msgid','$title')";
				$sth = $db->prepare($sql);
				if($sth->execute())
				{
					$rev[$rid]['msg'] = "发送成功";
				}else{
					$rev[$rid]['msg'] = "发送失败";
				}
			}else{
				foreach ($rid as $v)
				{
					$sql = "INSERT INTO messages (pid,rid,msgid,title) VALUES ('$pid','$v','$msgid','$title')";
					$sth = $db->prepare($sql);
					if($sth->execute())
					{
						$rev[$v]['msg'] = "发送成功";
					}else{
						$rev[$v]['msg'] = "发送失败";
					}
				}
			}
		}catch (Exception $e){
			$rev['error'] = $e->getMessage();
		}
		return $rev;
	}
	
	static function getNew($db,$uid,$type="member"){
		$rev = array();
		try{
			$sql = "SELECT * FROM messages m
					LEFT JOIN messages_logs ml ON m.id=ml.mid
					WHERE ml.uid IS NULL AND m.status>=0 ";
			if($type=="member")
			{
				$sql .= " AND m.rid IN (0,$uid)";
			}else if($type=="admin"){
				$sql .= " AND m.rid IN (-1,0,$uid)";
			}
			
			$sql.=" order by sendtime desc";
			
			$result = $db->query($sql);
			
			$rows = $result->fetchAll();
			
			$rev['count'] = count($rows);
			$rev['rows'] = $rows;
			
		}catch (Exception $e){
			$rev['error'] = $e->getMessage();
		}
		return $rev;
	}
	
	//返回单条消息
	static function getOne($db,$uid,$id){
		$rev = array();
		try{
			$sql = "SELECT m.id,m.pid,m.rid,m.sendtime,m.status,m.msgid,m.title,mc.body,u.realname,ml.uid FROM messages m
					LEFT JOIN messages_content mc ON m.msgid=mc.id
					LEFT JOIN users u on u.id=m.pid
					LEFT JOIN messages_logs ml ON m.id=ml.mid
					WHERE m.id=$id";
			$result = $db->query($sql);
			$row = $result->fetch();
			
			if(empty($row['uid']))
			{
				$sql = "INSERT INTO messages_logs (uid,mid) VALUES ('$uid','$id')";
				@$db->exec($sql);
			}
			$rev['info'] = $row;	
		}catch (Exception $e){
			$rev['error'] = $e->getMessage();
		}
		return $rev;
	}
	
	//标记为已读
	static function read($db,$uid,$mid){
		$sql = "INSERT INTO messages_logs (uid,mid) VALUES ('$uid','$mid')";
		if(@$db->exec($sql))
		{
			return true;
		}else{
			return false;
		}
	}
	
	//标记为已处理（不再推送）
	static function over($db,$mid){
		$id = "";
		if(!is_array($mid))
		{
			$id = $mid;
		}else
		{
			$id = join(",",$mid);
		}
		$sql = "UPDATE messages SET status=-1 WHERE id IN ($id)";
		if(@$db->exec($sql))
		{
			return true;
		}else{
			return false;
		}
	}	
	
}