space usage in sql server

the script i have written to verify the space utilization and give necessary action to bring it down to 

85%. i have considered auto growth, no drive space .

The script will give the necessary information about the space usage and the recommendation to bring the space utilization less than 85%, if the drive is full then , the recommendation is to increase the size of file to (drive space)-100 mb. Note if the auto growth is enabled , the recommendation is it increase the max size to 5% of the file increase(you change it if you want)

the link is 

 ******************************************************************************************************************************************************************
 if  OBJECT_ID('#freesapce') is not null
 begin
 drop table #freesapce
 end
 /*creating table to check free space in the drive*/
 create table #freesapce( drive char(10),val int)
 insert into #freesapce   exec xp_fixeddrives;
 go
 declare @dbname varchar(50)=(select DB_NAME())
 select DB_NAME(mf.database_id) 'db_name',fp.drive,fp.val 'mb on drive'
 , (size*8/1024) [occupied size],FILEPROPERTY(name,'spaceused')*8*1.0/1024 'free space',
 FILEPROPERTY(name,'spaceused')*1.0*100/size [percent free],
 left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/85,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/85)-1) 'req',
 mf.type_desc as 'file',
 isnull(
 /*condition to check if the space utilisation is more than 85%*/
 case when
 (FILEPROPERTY(name,'spaceused')*1.0*100)/size >85 then

/*condition to check if the space utilisation is more than 85% and if drive is not having sufficient space
 to bring the space utiliszation to less than 85 %*/
 case
 when (fp.val)-(left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/85,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/85)-1)-
 FILEPROPERTY(name,'spaceused')*8*1.0/1024)<0
 then

case when mf.growth=0 and mf.type_desc not like '%LOG%' and mf.type_desc like '%ROW%'
   then
 CHAR(13)+'/*contact windows*/ use master ; '+CHAR(13)+'alter database ['+DB_NAME(database_id)+']  modify file
  ( NAME = N'''+name+''',size='+ convert (nvarchar(20),
  size*8/1024+fp.val-100)+' mb )'

 when max_size<>-1 or growth=0
  and type_desc not like '%LOG%' and type_desc like '%ROW%'
  then

 CHAR(13)+'/*contact windows*/ use master ; '+CHAR(13)+'alter database ['+DB_NAME(database_id)+']  modify file
  ( NAME = N'''+name+''',size='+ convert (nvarchar(20),
  size*8/1024+fp.val-100)+' mb,
 MAXSIZE ='+convert (nvarchar(20),
  size*8/1024+fp.val-100)+' mb )'


 end

else
 /*condition to check if the space utilisation is more than 85% and bring it down to 85%*/
   case when mf.growth=0 and mf.type_desc not like '%LOG%' and mf.type_desc like '%ROW%'
   then
 '/*action required*/ '+CHAR(13)+'use master ; '+CHAR(13)+'alter database ['+DB_NAME(database_id)+']  modify file
  ( NAME = N'''+name+''',size='+
   convert(nvarchar(20),left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84)-1))+' mb )'

when max_size<>-1 or growth=0
  and type_desc not like '%LOG%' and type_desc like '%ROW%'
  then
  /*condition to check if the space utilisation is more than 85% and bring it down to 85% and checks auto
  growth is enabled*/
  '/*action required*/ '+CHAR(13)+'use master ; '+CHAR(13)+'alter database ['+DB_NAME(database_id)+']  modify file
  ( NAME = N'''+name+''',size='+
  convert(nvarchar(20),left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84)-1))+' mb,
 MAXSIZE ='+
 convert(nvarchar(20),left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84)-1)+
 left(round((FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84,0),
 CHARINDEX('.',(FILEPROPERTY(name,'spaceused')*8*1.0/1024)*100/84)-1)*5/100)+'mb )'


end
 end

else

'no action required' end,'auto growth unlimited') action
 /*when sapce utilisation is more 85% unlimited file growth is enabled- you will
 see in the action -'auto growth unlimited'*/
  from #freesapce fp left join
 sys.master_files mf on fp.drive=SUBSTRING(mf.physical_name,1,1)
 where database_id=DB_ID(@dbname)
 go
 drop table #freesapce
 go