from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app

def run_app(url_mapping):
	application = webapp.WSGIApplication(url_mapping, debug=True)
	application = redirect_from_appspot(application)
	run_wsgi_app(application)

def redirect_from_appspot(wsgi_app):
	"""Handle redirect to my domain if called from appspot (and not SSL)"""
	from_server = "allwomenstalk-website.appspot.com"
	to_server = "allwomenstalk.com"

	def redirect_if_needed(env, start_response):

		# If we're calling on the appspot address, and we're not SSL (SSL only works on appspot)
		if env["HTTP_HOST"].endswith(from_server) and env["HTTPS"] == "off":

			# Parse the URL
			import webob, urlparse
			request = webob.Request(env)
			scheme, netloc, path, query, fragment = urlparse.urlsplit(request.url)
			url = urlparse.urlunsplit([scheme, to_server, path, query, fragment])

			# Exclude /admin calls, since they're used by Cron, TaskQueues and will fail if they return a redirect
			if not path.startswith('/admin'):
				# Send redirect
				start_response("301 Moved Permanently", [("Location", url)])
				return ["301 Moved Peramanently", "Click Here %s" % url]

		# Else, we return normally
		return wsgi_app(env, start_response)

	return redirect_if_needed