#!/usr/bin/python2.5

#

# Copyright 2008 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Params related methods.

"""

__authors__ = [

  '"Sverre Rabbelier" <sverre@rabbelier.nl>',

  ]

from django import forms

from django.utils.translation import ugettext_lazy

from soc.logic import cleaning

from soc.logic import dicts

from soc.models import linkable

from soc.views import helper

from soc.views.helper import access

from soc.views.helper import dynaform

from soc.views.helper import redirects

DEF_LIST_DESCRIPTION_FMT = ugettext_lazy(

    'List of %(name_plural)s in Google Open Source Programs.')

DEF_CREATE_INSTRUCTION_MSG_FMT = ugettext_lazy(

      'Please use this form to select a %(name).')

DEF_SUBMIT_MSG_PARAM_NAME = 's'

DEF_SUBMIT_MSG_PROFILE_SAVED = 0

def constructParams(params):

  """Constructs a new params dictionary based on params.

  Params usage:

    The params dictionary is passed to getCreateForm and getEditForm,

    see their docstring on how they use it.

    rights: The rights value is merged with a default rights

      dictionary and then used as rights value.

    url_name: The url_name value is used in constructing several

      redirects as the first part of the url.

    module_name: The module_name value is used in constructing the

      location of several templates. It is expected that it matches

      the part after "/templates/soc/" for this View.

    name_plural: The name_plural argument is provided to the

      LIST_DESCRIPTION when constructing the list_description field.

    extra_dynainclude: The extra_dynainclude value is used when

      constructing the create_dynainclude value.

    extra_dynaexclude: The extra_dynaexclude value is used when

      constructing the create_dynaexclude value.

    logic: The logic value is used as argument to clean_new_link_id

      from the cleaning module.

  """

  logic = params['logic']

  rights = {}

  rights['unspecified'] = []

  rights['any_access'] = [access.checkIsLoggedIn]

  rights['show'] = [access.checkIsUser]

  rights['create'] = [access.checkIsDeveloper]

  rights['edit'] = [access.checkIsDeveloper]

  rights['delete'] = [access.checkIsDeveloper]

  rights['list'] = [access.checkIsDeveloper]

  if 'rights' in params:

    rights = dicts.merge(params['rights'], rights)

  new_params = {}

  new_params['rights'] = rights

  new_params['scope_logic'] = logic.getScopeLogic()

  # Do not expand edit_redirect to allow it to be overriden without suffix

  new_params['edit_redirect'] = '/%(url_name)s/edit/%(suffix)s'

  new_params['missing_redirect'] = '/%(url_name)s/create' % params

  new_params['delete_redirect'] = '/%(url_name)s/list' % params

  new_params['invite_redirect'] = '/request/list'

  new_params['sidebar'] = None

  new_params['sidebar_defaults'] = [

      ('/%s/create', 'New %(name)s', 'create'),

      ('/%s/list', 'List %(name_plural)s', 'list'),

      ]

  new_params['sidebar_additional'] = []

  new_params['key_fields_prefix'] = []

  new_params['link_id_arg_pattern'] = linkable.LINK_ID_ARG_PATTERN

  new_params['link_id_pattern_core'] = linkable.LINK_ID_PATTERN_CORE

  new_params['scope_path_pattern'] = getScopePattern(params)

  new_params['django_patterns'] = None

  new_params['extra_django_patterns'] = []

  new_params['django_patterns_defaults'] = [

      (r'^%(url_name)s/(?P<access_type>show)/%(key_fields)s$',

          'soc.views.models.%(module_name)s.public', 'Show %(name_short)s'),

      (r'^%(url_name)s/(?P<access_type>create)$',

          'soc.views.models.%(module_name)s.create', 'Create %(name_short)s'),

      (r'^%(url_name)s/(?P<access_type>create)/%(scope)s$',

          'soc.views.models.%(module_name)s.create', 'Create %(name_short)s'),

      (r'^%(url_name)s/(?P<access_type>delete)/%(key_fields)s$',

          'soc.views.models.%(module_name)s.delete', 'Delete %(name_short)s'),

      (r'^%(url_name)s/(?P<access_type>edit)/%(key_fields)s$',

          'soc.views.models.%(module_name)s.edit', 'Edit %(name_short)s'),

      (r'^%(url_name)s/(?P<access_type>list)$',

          'soc.views.models.%(module_name)s.list', 'List %(name_plural)s'),

      ]

  if not params.get('no_create_with_key_fields'):

    new_params['django_patterns_defaults'] += [

        (r'^%(url_name)s/(?P<access_type>create)/%(key_fields)s$',

        'soc.views.models.%(module_name)s.create', 'Create %(name_short)s')]

  new_params['public_template'] = 'soc/%(module_name)s/public.html' % params

  new_params['create_template'] = 'soc/models/edit.html'

  new_params['edit_template'] = 'soc/models/edit.html'

  new_params['list_template'] = 'soc/models/list.html'

  new_params['invite_template'] = 'soc/models/invite.html'

  new_params['error_public'] = 'soc/%(module_name)s/error.html' % params

  new_params['error_edit'] = 'soc/%(module_name)s/error.html'  % params

  new_params['list_main'] = 'soc/list/main.html'

  new_params['list_pagination'] = 'soc/list/pagination.html'

  new_params['list_row'] = 'soc/%(module_name)s/list/row.html' % params

  new_params['list_heading'] = 'soc/%(module_name)s/list/heading.html' % params

  new_params['list_action'] = (redirects.getEditRedirect, params)

  new_params['list_params'] = {

      'list_action': 'action',

      'list_description': 'description',

      'list_main': 'main',

      'list_pagination': 'pagination',

      'list_row': 'row',

      'list_heading': 'heading',

      }

  new_params['list_description'] = DEF_LIST_DESCRIPTION_FMT % params

  new_params['save_message'] = [ugettext_lazy('Profile saved.')]

  new_params['submit_msg_param_name'] = DEF_SUBMIT_MSG_PARAM_NAME

  new_params['edit_params'] = {

      DEF_SUBMIT_MSG_PARAM_NAME: DEF_SUBMIT_MSG_PROFILE_SAVED,

      }

  new_params['dynabase'] = helper.forms.BaseForm

  create_dynafields = {

      'clean_link_id': cleaning.clean_new_link_id(logic),

      'clean_feed_url': cleaning.clean_feed_url,

      }

  create_dynafields.update(params.get('create_extra_dynafields', {}))

  new_params['create_dynainclude'] = [] + params.get('extra_dynainclude', [])

  new_params['create_dynaexclude'] = ['scope', 'scope_path'] + \

      params.get('extra_dynaexclude', [])

  new_params['create_dynafields'] = create_dynafields

  edit_dynafields = {

      'clean_link_id': cleaning.clean_link_id,

      'link_id': forms.CharField(widget=helper.widgets.ReadOnlyInput()),

      }

  edit_dynafields.update(params.get('edit_extra_dynafields', {}))

  new_params['edit_dynainclude'] = None

  new_params['edit_dynaexclude'] = None

  new_params['edit_dynafields'] = edit_dynafields

  params = dicts.merge(params, new_params)

  # These need to be constructed separately, because they require

  # parameters that can be defined either in params, or new_params.

  if not 'create_form' in params:

    params['create_form'] = getCreateForm(params, logic.getModel())

  if not 'edit_form' in params:

    params['edit_form'] = getEditForm(params, params['create_form'])

  if not 'key_fields_pattern' in params:

    params['key_fields_pattern'] = getKeyFieldsPattern(params)

  return params

def getCreateForm(params, model):

  """Constructs a new CreateForm using params.

  Params usage:

    dynabase: The dynabase value is used as the base argument to

      dynaform.newDynaForm.

    logic: The logic value is used to get the model argument to newDynaForm.

    create_dynainclude: same as dynabase, but as dynainclude argument

    create_dynaexclude: same as dynabase, but as dynaexclude argument

    create_dynafields: same as dynabase, but as dynafields argument

  """

  create_form = dynaform.newDynaForm(

    dynabase = params['dynabase'],

    dynamodel = model,

    dynainclude = params['create_dynainclude'],

    dynaexclude = params['create_dynaexclude'],

    dynafields = params['create_dynafields'],

    )

  return create_form

def getEditForm(params, base_form):

  """Constructs a new EditForm using params.

  Params usage:

    create_form: The dynabase value is used as the dynaform argument

      to dyanform.extendDynaForm.

    edit_dynainclude: same as create_form, but as dynainclude argument

    edit_dynaexclude: same as create_form, but as dynaexclude argument

    edit_dynafields: same as create_form, but as dynafields argument

  """

  edit_form = dynaform.extendDynaForm(

    dynaform = base_form,

    dynainclude = params['edit_dynainclude'],

    dynaexclude = params['edit_dynaexclude'],

    dynafields = params['edit_dynafields'],

    )

  return edit_form

def getKeyFieldsPattern(params):

  """Returns the Django pattern for this View's entity.

  Params usage:

    key_fields_prefix: The key_fields_prefix value is used as the

      first part of the returned pattern.

  """

  names = params['logic'].getKeyFieldNames()

  patterns = params['key_fields_prefix']

  for name in names:

    if name == 'scope_path':

      pattern = params['scope_path_pattern']

    else:

      pattern = r'(?P<%s>%s)' % (name, linkable.LINK_ID_PATTERN_CORE)

    patterns.append(pattern)

  result = '/'.join(patterns)

  return result

def getScopePattern(params):

  """Returns the Scope pattern for this entity.

  """

  logic = params['logic']

  depth = logic.getScopeDepth()

  if depth is None:

    return linkable.SCOPE_PATH_ARG_PATTERN

  regexps = [linkable.LINK_ID_PATTERN_CORE for i in range(depth)]

  regexp = '/'.join(regexps)

  return r'(?P<scope_path>%s)' % regexp