import deform

from pyramid.httpexceptions import HTTPFound
from pyramid.view import view_config

from ordr.models.account import User, Role, TokenSubject
from ordr.events import RegistrationNotification

# below this password length a warning is displayed
MIN_PW_LENGTH = 12


@view_config(
    context='ordr.resources.account.RegistrationResource',
    permission='view',
    request_method='GET',
    renderer='ordr:templates/account/registration_form.jinja2'
    )
def registration_form(context, request):
    ''' show registration form '''
    form = context.get_registration_form()
    return {'form': form}


@view_config(
    context='ordr.resources.account.RegistrationResource',
    permission='view',
    request_method='POST',
    renderer='ordr:templates/account/registration_form.jinja2'
    )
def registration_form_processing(context, request):
    ''' process registration form '''
    if 'create' not in request.POST:
        return HTTPFound(request.resource_url(request.root))
        
    form = context.get_registration_form()
    data = request.POST.items()
    try:
        appstruct = form.validate(data)
    except deform.ValidationFailure as e:
        return {'form': form}
    
    # form validation successfull, create user
    account = User(
        username=appstruct['username'],
        first_name=appstruct['first_name'],
        last_name=appstruct['last_name'],
        email=appstruct['email'],
        role=Role.UNVALIDATED
        )
    account.set_password(appstruct['password'])
    request.dbsession.add(account)
    
    # create a verify-new-account token and send email
    token = account.issue_token(request, TokenSubject.REGISTRATION)
    notification = RegistrationNotification(request, account, {'token': token})
    request.registry.notify(notification)

    return HTTPFound(request.resource_url(context, 'verify'))


@view_config(
    context='ordr.resources.account.RegistrationResource',
    name='verify',
    permission='view',
    request_method='GET',
    renderer='ordr:templates/account/registration_verify.jinja2'
    )
def verify(context, request):
    ''' show email verification text '''
    return {}


@view_config(
    context='ordr.resources.account.RegistrationTokenResource',
    permission='view',
    request_method='GET',
    renderer='ordr:templates/account/registration_completed.jinja2'
    )
def completed(context, request):
    ''' registration is completed, awaiting activation by admin '''
    token = context.model
    account = token.owner
    account.role = Role.NEW
    request.dbsession.delete(token)
    return {}