#!/usr/bin/python2.5

#

# Copyright 2009 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.

"""The module conversion updates are defined in this module.

"""

__authors__ = [

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

  ]

from google.appengine.api.labs import taskqueue

from google.appengine.ext import db

from django.http import HttpResponse

from soc.logic.models.mentor import logic as mentor_logic

from soc.logic.models.org_admin import logic as org_admin_logic

from soc.logic.models.organization import logic as org_logic

from soc.logic.models.program import logic as program_logic

from soc.logic.models.student import logic as student_logic

from soc.tasks.helper import decorators

from soc.tasks.helper import error_handler

# batch size to use when going through the entities

DEF_BATCH_SIZE = 10

def startUpdateWithUrl(request, task_url):

  """Spawns an update task for the given task URL.

  Args:

    request: Django Request object

    task_url: The URL used to run this update task

  Returns:

    True iff the new task is successfully added to the Task Queue API

  """

  new_task = taskqueue.Task(url=task_url)

  new_task.add()

  return True

@decorators.iterative_task(program_logic)

def runProgramConversionUpdate(request, entities, context, *args, **kwargs):

  """AppEngine Task that converts Programs into GSoCPrograms.

  Args:

    request: Django Request object

    entities: list of Program entities to convert

    context: the context of this task

  """

  from soc.modules.gsoc.models.program import GSoCProgram

  # get all the properties that are part of each Programs

  program_model = program_logic.getModel()

  program_properties = program_model.properties().keys()

  # use this to store all the new GSoCPrograms

  gsoc_programs = []

  for entity in entities:

    gsoc_properties = {}

    for program_property in program_properties:

      # copy over all the information from the program entity

      gsoc_properties[program_property] = getattr(entity, program_property)

    # create the new GSoCProgram entity and prepare it to be stored

    gsoc_program_entity = GSoCProgram(key_name=entity.key().name(),

                                      **gsoc_properties)

    gsoc_programs.append(gsoc_program_entity)

  # store all the new GSoCPrograms

  db.put(gsoc_programs)

  # task completed, return

  return

@decorators.iterative_task(org_logic)

def runOrgConversionUpdate(request, entities, context, *args, **kwargs):

  """AppEngine Task that converts Organizations into GSoCOrganizations.

  Args:

    request: Django Request object

    entities: list of Organization entities to convert

    context: the context of this task

  """

  from soc.modules.gsoc.logic.models.program import logic as gsoc_program_logic

  from soc.modules.gsoc.models.organization import GSoCOrganization

  # get all the properties that are part of each Organization

  org_model = org_logic.getModel()

  org_properties = org_model.properties().keys()

  # use this to store all the new GSoCOrganization

  gsoc_orgs = []

  for entity in entities:

    gsoc_properties = {}

    for org_property in org_properties:

      # copy over all the information from the Organization entity

      gsoc_properties[org_property] = getattr(entity, org_property)

    # create the new GSoCOrganization entity and prepare it to be stored

    gsoc_org_entity = GSoCOrganization(key_name=entity.key().name(),

                                       **gsoc_properties)

    gsoc_orgs.append(gsoc_org_entity)

  # store all the new GSoCOrganizations

  db.put(gsoc_orgs)

  # task completed, return

  return

@decorators.iterative_task(org_admin_logic)

def runOrgAdminConversionUpdate(request, entities, context, *args, **kwargs):

  """AppEngine Task that converts OrgAdmins into GSoCOrgAdmins.

  Args:

    request: Django Request object

    entities: list of OrgAdmin entities to convert

    context: the context of this task

  """

  from soc.modules.gsoc.models.org_admin import GSoCOrgAdmin

  return _runOrgRoleConversionUpdate(entities, org_admin_logic, GSoCOrgAdmin)

@decorators.iterative_task(mentor_logic)

def runMentorConversionUpdate(request, entities, context, *args, **kwargs):

  """AppEngine Task that converts Mentors into GSoCMentors.

  Args:

    request: Django Request object

    entities: list of Mentor entities to convert

    context: the context of this task

  """

  from soc.modules.gsoc.models.mentor import GSoCMentor

  return _runOrgRoleConversionUpdate(entities, mentor_logic, GSoCMentor)

def _runOrgRoleConversionUpdate(entities, from_role_logic, to_role_model):

  """AppEngine Task that converts a normal Organization Role into a

  GSoCOrganization Role.

  Args:

    entities: Role entities to convert

    from_role_logic: the Role Logic instance where to convert from

    to_role_model: the role Model class where to convert to

  """

  from soc.modules.gsoc.logic.models.organization import logic as \

      gsoc_org_logic

  from soc.modules.gsoc.logic.models.program import logic as gsoc_program_logic

  # get all the properties that are part of each Organization's Role

  role_model = from_role_logic.getModel()

  role_properties = role_model.properties().keys()

  # use this to store all the new Roles

  gsoc_roles = []

  for entity in entities:

    gsoc_properties = {}

    for role_property in role_properties:

      # copy over all the information from the Role entity

      gsoc_properties[role_property] = getattr(entity, role_property)

    # create the new GSoC Role entity and prepare it to be stored

    gsoc_role_entity = to_role_model(key_name=entity.key().name(),

                                        **gsoc_properties)

    gsoc_roles.append(gsoc_role_entity)

  # store all the new GSoC Roles

  db.put(gsoc_roles)

  # task completed, return

  return

@decorators.iterative_task(student_logic)

def runStudentConversionUpdate(request, entities, context, *args, **kwargs):

  """AppEngine Task that converts Students into GSoCStudents.

  Args:

    request: Django Request object

    entities: list of Student entities to convert

    context: the context of this task

  """

  from soc.modules.gsoc.logic.models.program import logic as gsoc_program_logic

  from soc.modules.gsoc.models.student import GSoCStudent

  # get all the properties that are part of each Student

  student_model = student_logic.getModel()

  student_properties = student_model.properties().keys()

  # use this to store all the new GSoCStudents

  gsoc_students = []

  for entity in entities:

    gsoc_properties = {}

    for student_property in student_properties:

      # copy over all the information from the Student entity

      gsoc_properties[student_property] = getattr(entity, student_property)

    # get the Program key belonging to the old Student

    program_key = entity.scope.key().id_or_name()

    # get the new GSoCProgram and set it as scope for the GSoCStudent

    gsoc_program = gsoc_program_logic.getFromKeyName(program_key)

    gsoc_properties['scope'] = gsoc_program

    # create the new GSoCStudent entity and prepare it to be stored

    gsoc_student_entity = GSoCStudent(key_name=entity.key().name(),

                                      **gsoc_properties)

    gsoc_students.append(gsoc_student_entity)

  # store all the new GSoCStudents

  db.put(gsoc_students)

  # task completed, return

  return