import socketserver
import traceback
import io
import os.path

import hserver
import hserver.systemplates

import threading
import socket

from hserver.mime import MIME
from hserver.packages import PackageManager

import objectbroker
from objectbroker import AquisitionProxy

class HServerRequestHandler(socketserver.StreamRequestHandler):
	""

	def handle(self):
		self.__keepalive = False

		print("handle():")

		try:
			self.handle_request()
			while (self.__keepalive):
				self.handle_request()
				
		except:
			print("handle(): Exception:")
			traceback.print_exc()
			
#		self.rfile.close()
#		self.wfile.close()
		self.request.close()
		
		print("handle(): finished.")
		
	def handle_request(self):
		print("handle_request():")
		
		l = self.rfile.readline()
		rline = str(l,"iso-8859-1")
		toks = rline.split()
		print("handle_request: requestline: %s" % (toks,))
		
		if (len(toks)!=3):
			return
		
		method,uri,version = toks
		
		if (not version.startswith("HTTP/")):
			print("handle_request: Version String: %s" % (version,))
			return
			
		#self.rbfile = self.rfile
		#self.rfile = io.TextIOWrapper(self.rbfile, "iso-8859-1")
			
		print("MIMEing...")
			
		mime = MIME(self.rfile, defaultlength=0)
		r = hserver.Request( URI=uri, MIME=mime, method=method, read=self.rfile )
		
		try:
			self.server.hserver.handle(r)
		except hserver.FinishRequestException:
			pass
		except hserver.HttpException as ex:
			r.reset()
			r.setResponseHeader("Content-Type","text/html")

			t = self.server.hserver.packagemanager().hcore.Templates.provide("%s.html" % (ex.status,))
			t.run( ex, outfile=r.getContentFile() )
			
		except Exception as ex:
			traceback.print_exception(type(ex),ex,ex.__traceback__)
			
			r.reset()
			r.setResponseHeader("Content-Type","text/html")

			self.templ_exception = hserver.Template(source=hserver.systemplates.tmpl_exception, disable_sandbox=True)
			self.templ_exception.run( ex, globals(), outfile=r.getContentFile() )
			
		print("handle_request(): reply")

			
		r.setResponseHeader("Connection","close")
		
		w = io.TextIOWrapper(self.wfile)
		w.write("%s %s %s\r\n" % (version,r.getStatus(),r.getStatus()))
		
		c = r.getContent()
		
		r.getResponseHeaders()['Content-Length'] = str(len(c))
		
		for k in r.getResponseHeaders().keys():
			w.write("%s: %s\r\n" % (k, r.getResponseHeaders()[k]))
			
		w.write("\r\n")
		w.flush()
		
		print("handle_request(): sending content... (%s Bytes)" % (len(c),))
		
		self.wfile.write( c )
		#self.wfile.write( b"\r\n" );
		print("handle_request(): finished.")
		
		
	

class HServer:

	def __init__(self,listen = ('localhost',8080)):
		self.__listen = (listen[0],listen[1])
		
		self.__disksync = objectbroker.DiscObjectStore("./DiskSync")
		self.__broker = objectbroker.ObjectBroker( self.__disksync )

		self.__packages = PackageManager("./packages")
		self.__packages.loadPackageFromPath( "{0}/../hcore".format( os.path.dirname(__file__) ) )

		if "ROOT" in self.__disksync:
			self.__root = self.__broker.load( self.__disksync["ROOT"].decode("UTF-8") )
		else:
			self.__root = hserver.api.WebFolder()
			persistence_id = self.__broker.save( self.__root )
			self.__disksync["ROOT"] = persistence_id.encode("UTF-8")
		
		self.__packages.hcore.module().core.init(self)
		
		
	def _shutdown(self):
		self.__http.shutdown()
		
	def shutdown(self):
		t = threading.Thread(target=HServer._shutdown,args=(self,))
		t.start()
		
	def packagemanager(self):
		return self.__packages
		
	def getRoot(self):
		return self.__root
		
	def aq_root(self):
		return AquisitionProxy( self.__root )
		
	def run(self):
		socketserver.TCPServer.allow_reuse_address = True
		self.__http = socketserver.TCPServer(self.__listen,HServerRequestHandler)
		self.__http.socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
		self.__http.hserver = self
		self.__http.serve_forever()
		


	def handle(self,request):
		print("Hserver.handle(%s)" % (request,))
		
		root = self.aq_root()
		
		if (request.pathwalker().len()==0):
			root( request )
		else:
			root.walk( request )
			self.__broker.save( self.__root )