abuse old contest form for exercise view
[edumed.git] / wtem / views.py
1 # -*- coding: utf-8 -*-
2 import json
3 from copy import deepcopy
4 from functools import wraps
5
6 from django.conf import settings
7 from django.contrib import messages
8 from django.core.urlresolvers import reverse
9 from django.http import HttpResponseForbidden
10 from django.http.response import HttpResponseRedirect, Http404
11 from django.shortcuts import render, get_object_or_404
12 from django.utils import timezone
13 from django.utils.cache import patch_cache_control, add_never_cache_headers
14 from django.views.decorators.cache import never_cache
15 from django.views.decorators.csrf import csrf_exempt
16
17 from wtem.models import Confirmation, TeacherConfirmation
18 from .forms import WTEMForm, WTEMSingleForm
19 from .models import Submission, DEBUG_KEY, exercises, CompetitionState
20
21
22 def cache_until_start(view_func):
23     @wraps(view_func)
24     def _wrapped_view_func(request, *args, **kwargs):
25         response = view_func(request, *args, **kwargs)
26         max_age = max(int((CompetitionState.start - timezone.now()).total_seconds()) + 1, 0)
27         if max_age:
28             patch_cache_control(response, max_age=max_age)
29         else:
30             add_never_cache_headers(response)
31         return response
32
33     return _wrapped_view_func
34
35
36 def get_submission(submission_id):
37     try:
38         submission_id = int(submission_id)
39     except ValueError:
40         raise Http404
41     return get_object_or_404(Submission, id=submission_id)
42
43
44 @csrf_exempt
45 def form(request, submission_id, key):
46     state = CompetitionState.get_state()
47     if state == CompetitionState.DURING:
48         state = 'single'
49     if request.META['REMOTE_ADDR'] in getattr(settings, 'WTEM_CONTEST_IP_ALLOW', []):
50         state = 'single'
51     return globals()['form_' + state](request, submission_id, key)
52
53
54 @cache_until_start
55 def form_before(request, submission_id, key):
56     submission = get_submission(submission_id)
57     if submission.key != key:
58         return render(request, 'wtem/key_not_found_before.html')
59     else:
60         submission.opened_link = True
61         submission.save()
62         return render(request, 'wtem/main_before.html')
63
64
65 def form_after(request, submission_id, key):
66     return render(request, 'wtem/main_after.html')
67
68
69 @never_cache
70 @csrf_exempt
71 def form_during(request, key):
72
73     if request.META['REMOTE_ADDR'] not in getattr(settings, 'WTEM_CONTEST_IP_ALLOW', []):
74         return HttpResponseForbidden('Not allowed')
75
76     try:
77         submission = Submission.objects.get(key=key)
78     except Submission.DoesNotExist:
79         if settings.DEBUG and key == DEBUG_KEY:
80             submission = Submission.create(
81                 first_name='Debug', last_name='Debug', email='debug@debug.com', key=DEBUG_KEY)
82         else:
83             return render(request, 'wtem/key_not_found.html')
84     exercises_with_answers = deepcopy(exercises)
85     if submission.answers:
86         answers = json.loads(submission.answers)
87     else:
88         answers = {}
89     for exercise in exercises_with_answers:
90         exercise['saved_answer'] = answers.get(str(exercise['id']), '')
91         if exercise['type'] == 'open' and exercise.get('fields'):
92             field_answers = {field['id']: field['text'] for field in exercise['saved_answer']}
93             for field in exercise['fields']:
94                 field['saved_answer'] = field_answers.get(field['id'], '')
95     if request.method == 'GET':
96         return render(request, 'wtem/main.html', {
97             'exercises': exercises_with_answers,
98             'end_time': submission.end_time,
99             'show_answers': True,
100         })
101     elif request.method == 'POST':
102         form = WTEMForm(request.POST, request.FILES, instance=submission)
103         if form.is_valid():
104             form.save()
105             return render(request, 'wtem/thanks.html', dict(end_time=submission.end_time))
106         else:
107             raise Exception
108
109
110 @never_cache
111 @csrf_exempt
112 def form_single(request, submission_id, key):
113     if CompetitionState.get_state() != CompetitionState.DURING:
114         if request.META['REMOTE_ADDR'] not in getattr(settings, 'WTEM_CONTEST_IP_ALLOW', []):
115             return HttpResponseForbidden('Not allowed')
116
117     submission = get_submission(submission_id)
118     if submission.key != key:
119         return render(request, 'wtem/key_not_found.html')
120
121     i, exercise = submission.current_exercise()
122
123     exercise_count = len(exercises)
124
125     if not exercise:
126         return render(request, 'wtem/thanks_single.html')
127
128     if request.method == 'GET':
129         return render(request, 'wtem/single.html', {'exercise': exercise, 'no': i, 'exercise_count': exercise_count})
130     elif request.method == 'POST':
131         form = WTEMSingleForm(request.POST, request.FILES, instance=submission)
132         if form.is_valid():
133             try:
134                 form.save()
135             except ValueError as e:
136                 if e.message == 'wrong exercise id':
137                     messages.error(request, u'Próba wysłania odpowiedzi ponownie lub poza kolejnością')
138                 elif e.message == 'no answer':
139                     messages.error(request, u'Wybierz przynajmniej jedną odpowiedź')
140             return HttpResponseRedirect(reverse('wtem_form', kwargs={'submission_id': submission_id, 'key': key}))
141         else:
142             raise Exception(u'Błędna wartość w formularzu')
143
144
145 @cache_until_start
146 @csrf_exempt
147 def start(request, submission_id, key):
148     state = CompetitionState.get_state()
149     if state in (CompetitionState.BEFORE, CompetitionState.AFTER):
150         return globals()['form_' + state](request, submission_id, key)
151
152     submission = get_submission(submission_id)
153     if submission.key != key:
154         return render(request, 'wtem/key_not_found.html')
155
156     submission.opened_link = True
157     submission.save()
158
159     i, exercise = submission.current_exercise()
160     if not exercise:
161         return render(request, 'wtem/thanks_single.html')
162
163     return render(request, 'wtem/start.html', {'exercise_count': len(exercises), 'submission': submission})
164
165
166 def confirmation(request, id, key):
167     conf = get_object_or_404(Confirmation, id=id, key=key)
168     was_confirmed = conf.confirmed
169     if not was_confirmed:
170         conf.confirmed = True
171         conf.save()
172     return render(request, 'wtem/confirmed.html', {'confirmation': conf, 'was_confirmed': was_confirmed})
173
174
175 def teacher_confirmation(request, id, key):
176     conf = get_object_or_404(TeacherConfirmation, id=id, key=key)
177     was_confirmed = conf.confirmed
178     if not was_confirmed:
179         conf.confirmed = True
180         conf.save()
181     from contact.forms import contact_forms
182     form_class = contact_forms['olimpiada']
183     if not form_class.is_disabled():
184         pass
185     return render(request, 'wtem/teacher_confirmed.html', {
186         'confirmation': conf,
187         'was_confirmed': was_confirmed,
188     })