import cgi
from datetime import datetime
import os
import wsgiref.handlers

from google.appengine.api import users
from google.appengine.ext import db
from google.appengine.ext import webapp
from google.appengine.ext.webapp import template

import markdown2  # from http://code.google.com/p/python-markdown2/

from model import *


class ListEvents(webapp.RequestHandler):
  def get(self):
    configuration = Configuration.all().get() or Configuration()
    active_event = configuration.active_event

    events = Event.all().order('-date');

    template_values = {
      'events': events,
      'active_event': active_event,
    }

    path = os.path.join(os.path.dirname(__file__), 'admin_list_events.html')
    self.response.out.write(template.render(path, template_values))


class PreviewEvent(webapp.RequestHandler):
  def get(self):
    event = db.get(self.request.get('key'))

    template_values = {
      'preview': True,
      'title': event.title,
      'text': markdown2.markdown(event.text),
      'attendees': event.attendees.order('signup_date'),
    }

    path = os.path.join(os.path.dirname(__file__), 'main.html')
    self.response.out.write(template.render(path, template_values))


class DownloadEventCSV(webapp.RequestHandler):
  def get(self):
    event = db.get(self.request.get('key'))

    mimetype = 'text/csv; charset=utf-8; header=present'
    disposition = 'attachment; filename=osjam-%s.csv' % event.date.isoformat()
    self.response.headers['Content-Type'] = mimetype
    self.response.headers['Content-Disposition'] = disposition

    self.response.out.write('name,email\n')
    for attendee in event.attendees.order('signup_date'):
      self.response.out.write("\"%s\",\"%s\"\n" % (
          attendee.name.replace('"', '""'),
          attendee.email.replace('"', '""')))


class EditEvent(webapp.RequestHandler):
  DEFAULT_EVENT_TEXT_ = """
# Google London Open Source Jam
## When

**Thursday 21<sup>st</sup> February 2008. 6pm - 9.30pm**.

## Where

At the **London Google Engineering Office**

Belgrave House, 76 Buckingham Palace Road, London, SW1W 9TQ. [Map][]
[Map]: http://maps.google.co.uk/maps?q=sw1w9tq&z=16&ll=51.495492,-0.14647&spn=0.004823,0.017166

## Topic

This time, our topic of interest is **How much is the doggie in the window**.

   * Valuing dogs, a value proposition?
   * Accessibility.

## Hosts

Joe Walnes, Neil Dunn, Malcolm Rowe

## How to Get Here

Take the tube (Victoria, District and Circle lines)
or bus (multiple routes, including the 38 and 73
from the West End) to Victoria Station, and we're 3
minutes' walk from the station.

## What to Do When You Get Here

When you arrive, in the main ground floor
reception, tell the receptionist that you're
visiting Google. You register there, then take the
lift to the 5<sup>th</sup> floor, where you can sign in to the
Google reception; when you arrive up there, please
ask for the Open Source Jam event.
"""

  def get(self):
    configuration = Configuration.all().get() or Configuration()
    active_event = configuration.active_event

    key = self.request.get('key')
    if key:
      event = db.get(key)
      page_title = 'Edit Event'
      submit_button_label = 'Save'
      event_is_active = active_event and active_event.key() == event.key()
    else:
      event = Event(date=datetime.today().date(),
                    text=self.DEFAULT_EVENT_TEXT_,
                    allow_signup=True)
      page_title = 'New Event'
      submit_button_label = 'Create Event'
      event_is_active = False

    template_values = {
      'event': event,
      'event_is_active': event_is_active,
      'page_title': page_title,
      'submit_button_label': submit_button_label,
    }

    path = os.path.join(os.path.dirname(__file__), 'admin_edit_event.html')
    self.response.out.write(template.render(path, template_values))

  def post(self):
    configuration = Configuration.all().get() or Configuration()

    key = self.request.get('key')
    if key:
      event = db.get(key)
    else:
      event = Event(date=datetime.today().date())

    event.date = datetime.strptime(self.request.get('date'), '%Y-%m-%d').date()
    event.title = self.request.get('title')
    event.text = self.request.get('text')
    event.max_places = int(self.request.get('max_places'))
    event.allow_signup = bool(self.request.get('allow_signup'))
    event.put()

    if self.request.get('activate'):
      configuration.active_event = event
      configuration.put()

    self.redirect('/admin')


# Inteded for use when bulk loading.  Not linked anywhere.
class ClearEvent(webapp.RequestHandler):
  def get(self):
    event = db.get(self.request.get('key'))

    if not self.request.get('ireallymeanit'):
      self.response.out.write(
          'Retry with &ireallymeanit=1 if you really want to clear attendees')
      return

    for attendee in event.attendees:
      attendee.delete()

    self.redirect('/admin')


def main():
  application = webapp.WSGIApplication(
                                       [('/admin', ListEvents),
                                        ('/admin/', ListEvents),
                                        ('/admin/event', EditEvent),
                                        ('/admin/preview', PreviewEvent),
                                        ('/admin/csv', DownloadEventCSV),
                                        ('/admin/clearattendees', ClearEvent)],
                                       debug=True)
  wsgiref.handlers.CGIHandler().run(application)

if __name__ == "__main__":
  main()