from objectbroker import NoPersistence,Persistence

from hserver.api.WebCallable import WebCallable
from hserver.api.WebObject import WebObject

from hserver.templates.Template import Template

import hserver

from simplelog import log

import os
import os.path
import json


class RootFolder(WebObject,Persistence):

	_hm_frame	= Template( base = os.path.dirname( __file__ ), template = "frame.html" )
	_hm_style	= Template( base = os.path.dirname( __file__ ), template = "style.css" )
	_hm_api		= Template( base = os.path.dirname( __file__ ), template = "api.js" )
	_hm_edit	= Template( base = os.path.dirname( __file__ ), template = "edit.html" )
	_hm_tree	= Template( base = os.path.dirname( __file__ ), template = "tree.html" )

	def __init__(self):
		WebObject.__init__(self)


	def __call__(self,request,o = None):
		if not self.default() is None:
			request.redirect( request.pathwalker().walked() + "/" + self.default() )
		elif "index_html" in self:
			request.redirect( request.pathwalker().walked() + "/index_html" )

		request.redirect( request.pathwalker().walked() + "/_hm_frame" )
		

	def hm_json(self, request, o = None):
		reply = { "result": None, "exception": None }

		try:
			j = json.loads( request.mime().body() )
			log("Received JSON Request: {0}".format( j ))

			method = j["method"]
			parameters = j["parameters"]

			m = getattr(self, method)
			if not m is None:
				reply["result"] = m(request,**parameters)


		except Exception as ex:
			reply["result"] = None
			reply["exception"] = repr(ex)

		request.setResponseHeader("Content-Type","application/json")
		jreply = json.dumps( reply )
		log("JReply: {0}".format(jreply))
		request.getContentFile().write( jreply )

	def objCreate(self,request,objTypeName,objName,objPath):
		if (objTypeName == ""):
			raise Exception("objTypeName must contain a valid type")

		pObject = self.objPathWalk(request, objPath)
		if (objName == "") or (objName in pObject):
			raise Exception("objName must contain a valid and unused name of the new object")

		objClass = hserver.api.findClass( objTypeName.split(".") )
		o = objClass()

		pObject[ objName ] = o

		return True

	def objRemove(self,request,objPath):
		if (len(objPath) < 1):
			raise Exception("Can't delete root object")

		pObject = self.objPathWalk(request, objPath)
		del pObject._aq_parent[pObject._aq_name]

		return True


	_hm_json = WebCallable( method = hm_json )

	def objPathWalk(self, request, path):
		o = self
		for n in path:
			o = getattr( o, n )
		return o