import subprocess
import os
import shutil


'''


	Hay que mirar de hacer hooks para cada tarea que hacemos .....
	mirar llxcfg-usersync-backend-stdin

'''




class NetFilesManager:
	
	def __init__(self,llxvar):
		self.llxvar = llxvar
		self.net_path = "/net"
		self.nethome_path = os.path.join(self.net_path ,"home")
		self.netgroup_path = os.path.join(self.net_path ,"groups")
		
	def create_home(self,user_info):
		group = user_info["profile"]
		uid = user_info["uid"]
		nethome = os.path.join(self.nethome_path,group,uid)
		
		if not os.path.exists(nethome):
			
			userid = int(user_info["uidNumber"])
			usergid = int(user_info["gidNumber"]) 
			#fix umask for fix correct permission
			prevmask = os.umask(0)
			os.mkdir(nethome,0770)
			#shutils.copytree("/etc/skel/UserFiles",nethome,symlinks=True)
			p1=subprocess.Popen(["rsync","-rltgD","/etc/skel/UserFiles",nethome])
			out = p1.communicate()
			
			'''
				#chown -R user:guser
				#chmod 770 for all directories
				#chmod 660 for all files
			'''
			os.lchown(nethome,userid,usergid)
			for base ,directories, files in os.walk(nethome):
				for directori in directories:
					auxpath = os.path.join(base ,directori)
					os.lchown(auxpath,userid,usergid)
					os.chmod(auxpath,0770)
			
				for auxfile in files:
					auxpath = os.path.join(base,auxfile)
					os.chown(auxpath,userid,usergid)
					os.chmod(auxpath,0660)	
			# for 
			
			# restore old umask
			os.umask(prevmask)
		return nethome
		
		
	#def createHome
	
	def delete_home(self,user_info):
		nethome = os.path.join(self.nethome_path,user_info["profile"],user_info["uid"])
		self.delete_directory(nethome)
		return nethome
	
	#def delete_home
	
	def create_group(self,group_cn):
		group_path = os.path.join(self.netgroup_path,group_cn)
		if not os.path.exists(group_path):
			prevumask = os.umask(0)
			os.mkdir(group_path,0755)
			os.umask(prevumask)
	#def create_group


	
	def delete_group(self,group_cn):
		group_path = os.path.join(self.netgroup_path,group_cn)
		self.delete_directory(group_path)
		
	#def delete_group

	def join_to_group(self,user_info,group_cn):
		group = user_info["profile"]
		uid = user_info["uid"]
		nethome = os.path.join(self.nethome_path,group,uid)
		auxgroup_path = os.path.join(self.netgroup_path, group_cn)
		if not os.path.exists(auxgroup_path):
			self.create_group(group_cn)
		auxpath = os.path.join(auxgroup_path , uid)
		if not os.path.exists(auxpath):
			os.symlink(nethome, auxpath)
	# def join_to_group
	
	def drop_group(self,user_info,group_cn):
		uid = user_info["uid"]
		group_path = os.path.join(self.netgroup_path, group_cn)
		auxpath = os.path.join(group_path , uid)
		if os.path.exists(auxpath):
			os.remove(auxpath)
	# def drop_group
	
	def delete_directory(self,directorypath):
		
		if os.path.exists(directorypath):
			try:
				shutil.rmtree(directorypath)
			except OSError:
				print "This path is a link"
			except :
				pass
		else:
			print "This path not exist "
	#def delete_directory
	
	def exist_home_or_create(self,user_info):
		group = user_info["profile"]
                uid = user_info["uid"]
		nethome = os.path.join(self.nethome_path,group,uid)
		if not os.path.exists(nethome):
			self.create_home(user_info)
	#def exist_home_or_create