"""This module contains the views for the project's proposal 

funded by NME through ICT.

"""

__authors__ = [

  '"Madhusudan.C.S" <madhusudancs@gmail.com>',

]

import json

import os

import time

from django.contrib.auth.models import User

from django.core.urlresolvers import reverse

from django.http import HttpResponse

from django.http import HttpResponseRedirect

from django.shortcuts import render_to_response

from django.template import RequestContext

from projrev.models import Project

from projrev.models import Proposal

from projrev.models import Review

from projrev.views.helpers import access 

from projrev.views.helpers import forms as projrev_forms

@access.register('proposer')

@access.checkAccess

def getMicr(request):

  """View to get MICR Code from the user.

  """

  if request.method == 'POST':

    post_params = request.POST

    submit = post_params.get('submit')

    if submit == 'New Proposal':

      return HttpResponseRedirect(

            reverse('app.projrev.views.proposal.submit'))

    else:

      micr_code = request.POST.get('micr_code')

      if micr_code:

        try:

          Project.objects.get(micr_code=micr_code)

        except Project.DoesNotExist:

          if (submit == 'Edit Proposal for MICR Code' or 

              submit == 'Withdraw Proposal for MICR Code'):

            template = 'projrev/proposal/get_micr.html'

            context = {

                'error': True,

                }

            return render_to_response(template,

                                      RequestContext(request, context))

        else:

          if submit == 'Edit Proposal for MICR Code':

            return HttpResponseRedirect(

                reverse('app.projrev.views.proposal.submit', 

                        args=(micr_code, )))

          elif submit == 'Withdraw Proposal for MICR Code':

            return HttpResponseRedirect(

                reverse('app.projrev.views.proposal.withdraw', 

                        args=(micr_code, )))

  else:

    template = 'projrev/proposal/get_micr.html'

    context = {}

    return render_to_response(template, RequestContext(request, context))

@access.register('proposer')

@access.checkAccess

def submit(request, micr_code=None):

  """View for proposal submission.

  """

  if request.method == 'POST':

    return submitPost(request, micr_code)

  else:

    return submitGet(request, micr_code)

def submitPost(request, micr_code=None):

  """Handles POST request for the submitted proposal form. 

  """

  prop_form = projrev_forms.ProposalForm(request.POST, request.FILES)

  project = None

  proposal = None

  if prop_form.is_valid():

    cleaned_data = prop_form.cleaned_data

    if micr_code:

      project = Project.objects.get(micr_code=micr_code)

      project.line_item = Project.getLineItem(cleaned_data['line_item'])

      project.institution = cleaned_data['institution']

      project.state = Project.getState(cleaned_data['state'])

      project.district = Project.getDistrict(cleaned_data['district'])

    else:

      # Generate MICR code

      if cleaned_data['district']:

        cleaned_data['micr_code'] = '%s%s%d' % (

            cleaned_data['district'], cleaned_data['line_item'], 

            int(time.time() * 1000) % 1000000000)

      else:

        cleaned_data['micr_code'] = '%s%s%s%d' % (

            cleaned_data['state'], 'NN', cleaned_data['line_item'], 

            int(time.time() * 1000) % 1000000000)

      cleaned_data['line_item'] = Project.getLineItem(cleaned_data['line_item'])

      cleaned_data['state'] = Project.getState(cleaned_data['state'])

      cleaned_data['district'] = Project.getDistrict(cleaned_data['district'])

      prop_form.cleaned_data = cleaned_data

      # If the form is valid create a new project or update the project

      # if it already exists from the form.

      project = prop_form.save()

      project.micr_code = cleaned_data['micr_code']

      send_mails(request, project)

    project.status = 'new'

    micr_code = project.micr_code

    project.save()

    if prop_form.cleaned_data['document']:

      # Create a proposal for the project.

      proposal = project.proposal_set.create(

          document=prop_form.cleaned_data['document'], 

          submitted_by=request.user, rev_num = 0)

      proposal.save()

    return HttpResponseRedirect(

        reverse('app.projrev.views.proposal.submit', args=(micr_code,)))

  return submitGet(request, micr_code, prop_form)

def submitGet(request, micr_code=None, prop_form=None):

  """Handles GET request for the submission of proposal form.

  """

  context = {}

  project = None

  if micr_code:

    project = Project.objects.get(micr_code=micr_code)

  if project:

    initial_vals = {

        'line_item': Project.getLineItemCode(project.line_item),

        'state': Project.getStateCode(project.state),

        'district': Project.getDistrictCode(project.district),

        }

    if not prop_form:

      prop_form = projrev_forms.ProposalForm(

          initial=initial_vals, instance=project)

    proposals = project.proposal_set.all()

    if proposals:

      proposal = proposals.order_by('-submitted_on')[0]

      if proposal:

        proposal_path = str(proposal.document)

        proposal_name = proposal_path.split('/')[-1]

        context['proposal_path'] = proposal_path

        context['proposal_name'] = proposal_name

        context['last_submitted'] = proposal.submitted_on

    if 'HTTP_REFERER' in request.META:

      referer = request.META['HTTP_REFERER'].split('/')

      if referer[-1]:

        ref = referer[-1]

      else:

        ref = referer[-2]

      if ref == 'create':

        context['created_now'] = True

    context['micr_code'] = project.micr_code

    reviews = project.review_set.all().order_by('-reviewed_on')

    if reviews:

      context['last_reviewed'] = reviews[0].reviewed_on

      context['nr_reviews'] = len(reviews)

  else:

    if not prop_form:

      prop_form = projrev_forms.ProposalForm()

  context['form'] = prop_form

  template = 'projrev/proposal/submit.html'

  return render_to_response(template, RequestContext(request, context))

@access.register('proposer')

@access.checkAccess

def withdraw(request, micr_code=None):

  """View Method for withdrawal of proposal.

  """

  if micr_code:

    project = Project.objects.get(micr_code=micr_code)

    if project:

      project.status = 'invalid'

      project.save()

      context = {

          'withdrawn': True,

      }

  template = 'projrev/proposal/withdraw.html'

  return render_to_response(template, RequestContext(request, context))

@access.register('reviewer')

@access.checkAccess

def review(request, micr_code=None, review_id=None):

  """View for reviewing the proposal.

  """

  if request.method == 'POST':

    return reviewPost(request, micr_code, review_id)

  else:

    return reviewGet(request, micr_code, review_id)

def reviewPost(request, micr_code=None, review_id=None):

  """

  """

  if review_id:

    review_instance = Review.objects.get(id=review_id)

    rev_form = projrev_forms.ReviewForm(request.POST, instance=review_instance)

  else:

    rev_form = projrev_forms.ReviewForm(request.POST)

  if rev_form.is_valid():

    cleaned_data = rev_form.cleaned_data

    project = Project.objects.get(micr_code=micr_code)

    proposal = project.proposal_set.all().order_by('-submitted_on')[0]

    cleaned_data['project'] = project

    cleaned_data['proposal'] = proposal

    cleaned_data['reviewer'] = request.user

    # If the form is valid create a new project or update the project

    # if it already exists from the form.

    review = rev_form.save()

    return HttpResponseRedirect(

        reverse('app.projrev.views.proposal.rank', args=(micr_code,)))

  return reviewGet(request, micr_code, review_id, rev_form)

def reviewGet(request, micr_code=None, review_id=None, rev_form=None):

  """

  """

  context = {}

  if not micr_code:

    context['projects'] = []

    projects = Project.objects.all().exclude(

        status__exact='invalid').order_by('-last_updated_on')

    for project in projects:

      user_reviews = project.review_set.all().filter(

          reviewer__id__exact=request.user.id).order_by('-reviewed_on')

      proposals = project.proposal_set.all().order_by('-submitted_on')

      if user_reviews and proposals:

        info = {

            'project': project,

            }

        proposal = proposals[0]

        new_user_reviews = user_reviews.filter(proposal__id__exact=proposal.id)

        if new_user_reviews:

          info['user_review'] = new_user_reviews[0]

        else:

          info['not_this_proposal'] = True

          info['user_review'] = user_reviews[0]

        context['projects'].append(info)

      elif proposals:

        info = {

            'project': project,

            }

        proposal = proposals[0]

        context['projects'].append(info)

    context['row_url'] = '/proposal/review/'

    return render_to_response(template, RequestContext(request, context))

  project = Project.objects.get(micr_code=micr_code)

  proposals = project.proposal_set.all().order_by('-submitted_on')

  if proposals:

    proposal = proposals[0]

    user_review = Review.objects.all().filter(

        id__exact=review_id).order_by('-reviewed_on')

    if user_review:

      user_review = user_review[0]

    if proposal:

      proposal_path = str(proposal.document)

      proposal_name = proposal_path.split('/')[-1]

      context['proposal_path'] = proposal_path

      context['proposal_name'] = proposal_name

      context['last_submitted'] = proposal.submitted_on

  if not rev_form:

    if user_review:

      rev_form = projrev_forms.ReviewForm(instance=user_review)

      context['prev_data'] = rev_form.initial

    else:

      rev_form = projrev_forms.ReviewForm()

  else:

    context['prev_data'] = rev_form.data

  context['form'] = rev_form

  context['project'] = project

  reviews = project.review_set.all().order_by('reviewed_on')

  if reviews:

    context['reviews'] = reviews

    context['last_reviewed'] = reviews[len(reviews)-1].reviewed_on

    context['nr_reviews'] = len(reviews)

  template = 'projrev/proposal/review.html'

  return render_to_response(template, RequestContext(request, context))

@access.register('reviewer')

@access.checkAccess

def rank(request, micr_code=None):

  """

  """

  context = {}

  if not micr_code:

    template = 'projrev/proposal/list.html'

    context['projects'] = Project.objects.all().exclude(

        status__exact='invalid').order_by('-last_updated_on')

    context['row_url'] = '/proposal/rank/'

    return render_to_response(template, RequestContext(request, context))

  project = Project.objects.get(micr_code=micr_code)

  proposals = project.proposal_set.all().order_by('-submitted_on')

  if proposals:

    proposal = proposals[0]

    if proposal:

      proposal_path = str(proposal.document)

      proposal_name = proposal_path.split('/')[-1]

      context['proposal_path'] = proposal_path

      context['proposal_name'] = proposal_name

      context['last_submitted'] = proposal.submitted_on

  # Get all the reviews and put them to context.

  reviews = project.review_set.all().order_by('reviewed_on')

  nr_reviews = len(reviews)

  if reviews:

    context['reviews'] = reviews

    context['last_reviewed'] = reviews[len(reviews)-1].reviewed_on

    context['nr_reviews'] = nr_reviews

  # Calculate the review scores

  review_score = [0] * 9

  for review in reviews:

    review_score[0] += review.attribute1

    review_score[1] += review.attribute2

    review_score[2] += review.attribute3

    review_score[3] += review.attribute4

    review_score[4] += review.attribute5

    review_score[5] += review.attribute6

    review_score[6] += review.attribute7

    review_score[7] += review.attribute8

    review_score[8] += review.attribute9

  total_score = sum(review_score)

  # Get the Average for each attribute

  review_avg = [0] * 9

  for i, rs in enumerate(review_score):

    try:

      review_avg[i] = "%.2f" % (float(rs) / nr_reviews)

    except ZeroDivisionError:

      review_avg[i] = 0

  try:

    total_avg = "%.2f" % (float(total_score) / nr_reviews)

  except ZeroDivisionError:

    total_avg = 0

  context['project'] = project

  context['review_score'] = review_score

  context['total_score'] = total_score

  context['review_avg'] = review_avg

  context['total_avg'] = total_avg

  template = 'projrev/proposal/rank.html'

  return render_to_response(template, RequestContext(request, context))

def getDistrictsForState(request):

  """View function that sends the districts for the given state code via AJAXy.

  """

  get_params = request.GET

  if get_params:

    st_code = get_params['_value']

    dt_dict = Project.DISTRICT_CHOICES

    # Get the Districts corresponding to the given State code.

    dt_names = {}

    count = 1

    for dt_code in dt_dict:

      if dt_code[:2] == st_code:

        dt_names[dt_code] = dt_dict[dt_code]

        count += 1

    # Sort the List based on District Name.

    dt_send = [{'': "---------" }]

    dt_names_sorted = sorted(dt_names.items(), key=lambda (k,v): (v,k))

    for dt_code, dt_name in dt_names_sorted:

      dt_send.append({dt_code: dt_name})

    return HttpResponse(json.dumps(dt_send))

  return HttpResponse(None)

def getNewDistrictsForState(request):

  """Get initial district for state.

  """

  get_params = request.GET

  if get_params:

    st_code = get_params['_value']

    dt_dict = Project.DISTRICT_CHOICES

    # Get the Districts corresponding to the given State code.

    dt_names = {}

    count = 1

    for dt_code in dt_dict:

      if dt_code[:2] == st_code:

        dt_names[dt_code] = dt_dict[dt_code]

        count += 1

    # Sort the List based on District Name.

    dt_send = [{'': "---------"}]

    dt_names_sorted = sorted(dt_names.items(), key=lambda (k,v): (v,k))

    for dt_code, dt_name in dt_names_sorted:

      dt_send.append({dt_code: dt_name})

    return HttpResponse(json.dumps(dt_send))

  return HttpResponse(None)

@access.register('reviewer')

@access.checkAccess

def listMyReviews(request):

  """View function to list all reviews given by a user.

  """

  context = {}

  # Get all the reviews and put them to context.

  reviews = Review.objects.all().order_by('reviewed_on')

  nr_reviews = len(reviews)

  if reviews:

    context['reviews'] = reviews

    context['last_reviewed'] = reviews[len(reviews)-1].reviewed_on

    context['nr_reviews'] = nr_reviews