#!/usr/bin/env python
#
# Implementation of handlers for Weave user service.

import tornado.httpserver
import tornado.ioloop
import tornado.web
import time
import calendar
import traceback
import logging
import cStringIO
import json
import cgi
from urlparse import urlparse
		
from server_config import account, storage, external_scheme, external_hostname
from weave_handler import WeaveHandler

class UsernameRootHandler(WeaveHandler):
	def get(self, name):
		if account.nameIsAvailable(name):
			self.write("0")
		else:
			self.write("1")

	def put(self, name):
		args = json.loads(self.request.body)

		# TODO handle captcha, invite code, secret, etc.  Lots of work.

		try:
			name = name.lower()
			account.create(name, password=args['password'], email=args['email'])
			self.write(name)
		except Exception, e:
			# TODO: return weave error codes
			raise tornado.web.HTTPError(500, str(e))
	
	@tornado.web.authenticated
	def delete(self, name):
		self.check_account_match(name)
		account.delete(name)
		
class SetEmailHandler(WeaveHandler):
	@tornado.web.authenticated
	def post(self, name):
		self.check_account_match(name)
		account.setEmail(name, self.request.body)
		self.write(self.request.body)

class SetPasswordHandler(WeaveHandler):
	@tornado.web.authenticated
	def post(self, name):
		self.check_account_match(name)
		account.setPassword(name, self.request.body)
		self.write("success")

# Note that getStorageNode is not currently authenticated.
class GetStorageNodeHandler(WeaveHandler):
	def get(self, name):
		node = account.getStorageNode(name)
		if node:
			self.write(node)
		else:
			if account.nameIsAvailable(name):
				raise tornado.web.HTTPError(404, "Not Found")
			else:
				# If the account system returns None for a storage node,
				# but the account exists, it means that the current host
				# is the storage node.
				self.write("%s://%s" % (external_scheme, external_hostname))