import logging
import stripe
import os

from flask import (abort, redirect, request, url_for, make_response, Response,
                   Blueprint)
from flask.ext.login import current_user
from urlparse import urlparse

from data import model
from data.model.oauth import DatabaseAuthorizationProvider
from app import app
from auth.permissions import AdministerOrganizationPermission
from util.invoice import renderInvoiceToPdf
from util.seo import render_snapshot
from util.cache import no_cache
from endpoints.common import common_login, render_page_template
from endpoints.csrf import csrf_protect, generate_csrf_token
from util.names import parse_repository_name
from util.gravatar import compute_hash
from auth import scopes

logger = logging.getLogger(__name__)

web = Blueprint('web', __name__)

STATUS_TAGS = app.config['STATUS_TAGS']


@web.route('/', methods=['GET'], defaults={'path': ''})
@web.route('/organization/<path:path>', methods=['GET'])
@no_cache
def index(path):
  return render_page_template('index.html')


@web.route('/500', methods=['GET'])
def internal_error_display():
  return render_page_template('500.html')


@web.route('/snapshot', methods=['GET'])
@web.route('/snapshot/', methods=['GET'])
@web.route('/snapshot/<path:path>', methods=['GET'])
def snapshot(path = ''):
  parsed = urlparse(request.url)
  final_url = '%s://%s/%s' % (parsed.scheme, 'localhost', path)
  result = render_snapshot(final_url)
  if result:
    return result

  abort(404)


@web.route('/plans/')
@no_cache
def plans():
  return index('')


@web.route('/guide/')
@no_cache
def guide():
  return index('')


@web.route('/tutorial/')
@no_cache
def tutorial():
  return index('')


@web.route('/organizations/')
@web.route('/organizations/new/')
@no_cache
def organizations():
  return index('')


@web.route('/user/')
@no_cache
def user():
  return index('')


@web.route('/signin/')
@no_cache
def signin():
  return index('')


@web.route('/contact/')
@no_cache
def contact():
  return index('')


@web.route('/about/')
@no_cache
def about():
  return index('')


@web.route('/new/')
@no_cache
def new():
  return index('')


@web.route('/repository/', defaults={'path': ''})
@web.route('/repository/<path:path>', methods=['GET'])
@no_cache
def repository(path):
  return index('')


@web.route('/security/')
@no_cache
def security():
  return index('')


@web.route('/v1')
@web.route('/v1/')
@no_cache
def v1():
  return index('')


@web.route('/status', methods=['GET'])
@no_cache
def status():
  return make_response('Healthy')


@web.route('/tos', methods=['GET'])
@no_cache
def tos():
  return render_page_template('tos.html')


@web.route('/disclaimer', methods=['GET'])
@no_cache
def disclaimer():
  return render_page_template('disclaimer.html')


@web.route('/privacy', methods=['GET'])
@no_cache
def privacy():
  return render_page_template('privacy.html')


@web.route('/receipt', methods=['GET'])
def receipt():
  if not current_user.is_authenticated():
    abort(401)
    return

  id =  request.args.get('id')
  if id:
    invoice = stripe.Invoice.retrieve(id)
    if invoice:
      user_or_org = model.get_user_or_org_by_customer_id(invoice.customer)
      
      if user_or_org:
        if user_or_org.organization:
          admin_org = AdministerOrganizationPermission(user_or_org.username)
          if not admin_org.can():
            abort(404)
            return
        else:
          if not user_or_org.username == current_user.db_user().username:
            abort(404)
            return      

      file_data = renderInvoiceToPdf(invoice, user_or_org)          
      return Response(file_data,
                      mimetype="application/pdf",
                      headers={"Content-Disposition": "attachment;filename=receipt.pdf"})
  abort(404)


@web.route('/confirm', methods=['GET'])
def confirm_email():
  code = request.values['code']
  user = None
  new_email = None

  try:
    user, new_email = model.confirm_user_email(code)
  except model.DataModelException as ex:
    return render_page_template('confirmerror.html', error_message=ex.message)
    
  common_login(user)

  return redirect(url_for('web.user', tab='email') 
                  if new_email else url_for('web.index'))


@web.route('/recovery', methods=['GET'])
def confirm_recovery():
  code = request.values['code']
  user = model.validate_reset_code(code)

  if user:
    common_login(user)
    return redirect(url_for('web.user'))
  else:
    abort(403)


@web.route('/repository/<path:repository>/status', methods=['GET'])
@parse_repository_name
@no_cache
def build_status_badge(namespace, repository):
  token = request.args.get('token', None)
  is_public = model.repository_is_public(namespace, repository)
  if not is_public:
    repo = model.get_repository(namespace, repository)
    if not repo or token != repo.badge_token:
      abort(404)

  # Lookup the tags for the repository.
  tags = model.list_repository_tags(namespace, repository)
  is_empty = len(list(tags)) == 0
  build = model.get_recent_repository_build(namespace, repository)

  if not is_empty and (not build or build.phase == 'complete'):
    status_name = 'ready'
  elif build and build.phase == 'error':
    status_name = 'failed'
  elif build and build.phase != 'complete':
    status_name = 'building'
  else:
    status_name = 'none'

  response = make_response(STATUS_TAGS[status_name])
  response.content_type = 'image/svg+xml'
  return response


class FlaskAuthorizationProvider(DatabaseAuthorizationProvider):
  def get_authorized_user(self):
    return current_user.db_user()

  def _make_response(self, body='', headers=None, status_code=200):
    return make_response(body, status_code, headers)


@web.route('/oauth/authorizeapp', methods=['POST'])
@csrf_protect
def authorize_application():
  if not current_user.is_authenticated():
    abort(401)
    return

  provider = FlaskAuthorizationProvider()
  client_id = request.form.get('client_id', None)
  redirect_uri = request.form.get('redirect_uri', None)
  scope = request.form.get('scope', None)

  # Add the access token.
  return provider.get_token_response('token', client_id, redirect_uri, scope=scope)


@web.route('/oauth/denyapp', methods=['POST'])
@csrf_protect
def deny_application():
  if not current_user.is_authenticated():
    abort(401)
    return

  provider = FlaskAuthorizationProvider()
  client_id = request.form.get('client_id', None)
  redirect_uri = request.form.get('redirect_uri', None)
  scope = request.form.get('scope', None)

  # Add the access token.
  return provider.get_auth_denied_response('token', client_id, redirect_uri, scope=scope)


@web.route('/oauth/authorize', methods=['GET'])
@no_cache
def request_authorization_code():
  provider = FlaskAuthorizationProvider()
  response_type = request.args.get('response_type', 'code')
  client_id = request.args.get('client_id', None)
  redirect_uri = request.args.get('redirect_uri', None)
  scope = request.args.get('scope', None)

  if (not current_user.is_authenticated() or
      not provider.validate_has_scopes(client_id, current_user.db_user().username, scope)):
    if not provider.validate_redirect_uri(client_id, redirect_uri):
      abort(404)
      return

    # Load the scope information.
    scope_info = scopes.get_scope_information(scope)
    if not scope_info:
      abort(404)
      return

    # Load the application information.
    oauth_app = provider.get_application_for_client_id(client_id)
    oauth_app_view = {
      'name': oauth_app.name,
      'description': oauth_app.description,
      'url': oauth_app.application_uri,
      'organization': {
        'name': oauth_app.organization.username,
        'gravatar': compute_hash(oauth_app.organization.email)
      }
    }

    # Show the authorization page.
    return render_page_template('oauthorize.html', scopes=scope_info, application=oauth_app_view,
                                enumerate=enumerate, client_id=client_id, redirect_uri=redirect_uri,
                                scope=scope, csrf_token_val=generate_csrf_token())

  if response_type == 'token':
    return provider.get_token_response(response_type, client_id, redirect_uri, scope=scope)
  else:
    return provider.get_authorization_code(response_type, client_id, redirect_uri, scope=scope)


@web.route('/oauth/access_token', methods=['POST'])
@no_cache
def exchange_code_for_token():
  grant_type = request.form.get('grant_type', None)
  client_id = request.form.get('client_id', None)
  client_secret = request.form.get('client_secret', None)
  redirect_uri = request.form.get('redirect_uri', None)
  code = request.form.get('code', None)
  scope = request.form.get('scope', None)

  provider = FlaskAuthorizationProvider()
  return provider.get_token(grant_type, client_id, client_secret, redirect_uri, code, scope=scope)