#!/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.

"""Views for Programs.

"""

__authors__ = [

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

    '"Lennard de Rijk" <ljvderijk@gmail.com>',

  ]

from django import forms

from soc.logic import dicts

from soc.logic.models import program as program_logic

from soc.logic.models import host as host_logic

from soc.views import helper

from soc.views import out_of_band

from soc.views.helper import access

from soc.views.helper import decorators

from soc.views.helper import redirects

from soc.views.helper import widgets

from soc.views.models import presence_with_tos

from soc.views.models import document as document_view

from soc.views.models import sponsor as sponsor_view

from soc.views.sitemap import sidebar

import soc.logic.models.program

class View(presence_with_tos.View):

  """View methods for the Program model.

  """

  def __init__(self, params=None):

    """Defines the fields and methods required for the base View class

    to provide the user with list, public, create, edit and delete views.

    Params:

      params: a dict with params for this View

    """

    rights = access.Checker(params)

    rights['any_access'] = ['allow']

    rights['show'] = ['allow']

    rights['create'] = [('checkSeeded', ['checkHasRole', host_logic.logic])]

    rights['edit'] = ['checkIsHostForProgram']

    rights['delete'] = ['checkIsDeveloper']

    new_params = {}

    new_params['logic'] = soc.logic.models.program.logic

    new_params['rights'] = rights

    new_params['scope_view'] = sponsor_view

    new_params['scope_redirect'] = redirects.getCreateRedirect

    new_params['name'] = "Program"

    new_params['sidebar_grouping'] = 'Programs'

    new_params['extra_dynaexclude'] = ['timeline']

    # TODO add clean field to check for uniqueness in link_id and scope_path

    new_params['create_extra_dynafields'] = {

        'description': forms.fields.CharField(widget=helper.widgets.TinyMCE(

            attrs={'rows':10, 'cols':40})),

        'scope_path': forms.CharField(widget=forms.HiddenInput, required=True),

        'workflow': forms.ChoiceField(choices=[('gsoc','Project-based'),

            ('ghop','Task-based')], required=True),

        }

    new_params['edit_extra_dynafields'] = {

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

                                   required=True),

        }

    params = dicts.merge(params, new_params)

    super(View, self).__init__(params=params)

  def _editPost(self, request, entity, fields):

    """See base._editPost().

    """

    if not entity:

      # there is no existing entity so create a new timeline

      fields['timeline'] = self._createTimelineForType(fields)

    else:

      # use the timeline from the entity

      fields['timeline'] = entity.timeline

    super(View, self)._editPost(request, entity, fields)

  def _createTimelineForType(self, fields):

    """Creates and stores a timeline model for the given type of program.

    """

    workflow = fields['workflow']

    timeline_logic = program_logic.logic.TIMELINE_LOGIC[workflow]

    key_fields = self._logic.getKeyFieldsFromFields(fields)

    key_name = self._logic.getKeyNameFromFields(key_fields)

    properties = {'scope_path': key_name}

    timeline = timeline_logic.updateOrCreateFromFields(properties, properties)

    return timeline

  @decorators.merge_params

  def getExtraMenus(self, id, user, params=None):

    """Returns the extra menu's for this view.

    A menu item is generated for each program that is currently

    running. The public page for each program is added as menu item,

    as well as all public documents for that program.

    Args:

      params: a dict with params for this View.

    """

    logic = params['logic']

    rights = params['rights']

    # only get all invisible and visible programs

    fields = {'status':['invisible', 'visible']}

    entities = logic.getForFields(fields)

    #TODO(ljvderijk) Add timeline dependent entries

    menus = []

    rights.setCurrentUser(id, user)

    filter_args = {}

    for entity in entities:

      items = []

      if entity.status == 'visible':

        # show the documents for this program, even for not logged in users

        items += document_view.view.getMenusForScope(entity, params)

      try:

        # check if the current user is a host for this program

        rights.doCachedCheck('checkIsHostForProgram', 

            {'scope_path': entity.scope_path,

            'link_id': entity.link_id}, [])

        if entity.status == 'invisible':

          # still add the document links so hosts can see how it looks like

          items += document_view.view.getMenusForScope(entity, params)

        # add link to edit Program Profile

        items += [(redirects.getEditRedirect(entity, params),

            'Edit Program Profile','any_access')]

        # add link to edit Program Timeline

        items += [(redirects.getEditRedirect(entity, {'url_name': 'timeline'}),

            "Edit Program Timeline", 'any_access')]

        # add link to create a new Program Document

        items += [(redirects.getCreateDocumentRedirect(entity, 'program'),

            "Create a New Document", 'any_access')]

      except out_of_band.Error:

        pass

      items = sidebar.getSidebarMenu(id, user, items, params=params)

      if not items:

        continue

      menu = {}

      menu['heading'] = entity.short_name

      menu['items'] = items

      menu['group'] = 'Programs'

      menus.append(menu)

    return menus

view = View()

create = view.create

delete = view.delete

edit = view.edit

list = view.list

public = view.public

export = view.export

home = view.home

pick = view.pick