#! /usr/bin/python

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__author__="bjschuma"
__date__ ="$Feb 17, 2010 9:32:56 PM$"

from sys import argv,platform
import os

from bt.message import write
from bt.file import join
from bt import xm
from bt import dict
import session


class Settings(dict.Dict):
	def __init__(self):
		dict.Dict.__init__(self)
		session.events.invite("scion-plugins-loaded",self.load,2)
		session.events.invite("scion-end",self.save)


	def setdefaults(self):
		write("Setting default values",1)
		self['user'] = os.path.expanduser("~")
		self['plugpath'] += ["plugins", "extra"]
		self['arch'] = platform
		self['appname'] = "scion"
		write(self,3)


	def clean(self):
		del self['appdir']
		del self['appname']
		del self['arch']
		del self['plugpath']
		del self['user']
		del self['verbose']


	def init(self,key,value):
		if self.has(key)==False:
			self[key] = value


	def __setitem__(self,key,value):
		key = key.lower()
		dict.Dict.__setitem__(self,key,value)


	def __getitem__(self,key):
		key = key.lower()
		if self.has(key)==True:
			return dict.Dict.__getitem__(self,key)
		return None


	def __delitem__(self,key):
		dict.Dict.__delitem__(self,key.lower())


	def load(self):
		write("Loading saved settings",1)
		path = join(self["session"],"settings")
		xm.load(path)
		elm = xm.child()
		if elm == None:
			return
		for node in xm.children(elm):
			if xm.isElm(node) == False:
				continue
			key = xm.name(node)
			val = xm.value( xm.child(node) )
			write("  ( "+key + ", " + str(val) + " )",2)
			self[key] = val


	def save(self):
		write("Saving settings",1)
		path = join(self["session"],"settings")
		xm.new()
		elm = xm.element("settings")
		xm.append(elm)
		self.clean()
		for key in self.keys():
			value = self[key]
			if value == None:
				continue
			e = xm.element(key)
			t = xm.text( value )
			xm.append(t,e)
			xm.append(e,elm)
		xm.write(path)