# -*- python -*-
# -*- coding: utf-8 -*-
#
# Debian Member Portfolio Service ShowformscriptsController.
#
# Copyright © 2009-2014 Jan Dittberner <jan@dittberner.info>
#
# This file is part of the Debian Member Portfolio Service.
#
# Debian Member Portfolio Service is free software: you can redistribute it
# and/or modify it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the License,
# or (at your option) any later version.
#
# Debian Member Portfolio Service is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero
# General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
"""
This file defines the ShowformscriptsController used to generate the JavaScript
code in forms.
"""

import logging
import simplejson

from pylons import request, response
from pylons.controllers.util import abort

import formencode.api
import formencode.validators

from debianmemberportfolio.lib.base import BaseController, render
from debianmemberportfolio.model.form import DDDataRequest
from debianmemberportfolio.model import dddatabuilder

log = logging.getLogger(__name__)


class ShowformscriptsController(BaseController):
    """This controller is used to support data entry in showform.

    It provides code for generating JavaScript as well as JSON
    responses for autocompletion of fields."""

    def index(self):
        """
        This action generates the helper script for the showform page.
        """
        response.headers['Content-Type'] = 'text/javascript; charset=utf-8'
        return render('/showformscript.mako')

    def fetchdddata(self):
        """
        This action fetches the data for a given mail address and
        returns them as JSON.
        """
        schema = DDDataRequest()
        try:
            formencode.api.set_stdtranslation(
                domain="FormEncode",
                languages=[lang[0:2] for lang in request.languages])
            form_result = schema.to_python(request.params)
        except formencode.validators.Invalid, error:
            errors = error.unpack_errors()
            abort(400, "\n".join(
                  ["%s: %s" % (key, errors[key]) for key in errors]))
        fields = dddatabuilder.build_data(form_result['email'])
        log.debug(fields)
        response.headers['Content-Type'] = 'text/plain'
        return simplejson.dumps(fields)