From 5e21deb4e04d14a28c5c5957835f4a12f850e9ae Mon Sep 17 00:00:00 2001
From: Giulio Gratta <giuliog@stanford.edu>
Date: Thu, 9 Nov 2017 16:29:58 -0800
Subject: [PATCH] Makes xblock due_date & graceperiod aware

- Adds mixin to check subsection duedate and course graceperiod
- Pushes version to 0.1.8
---
 freetextresponse/freetextresponse.py          | 15 +++++++--
 freetextresponse/mixins.py                    | 33 +++++++++++++++++++
 .../templates/freetextresponse_view.html      | 14 ++++----
 package.json                                  |  2 +-
 setup.py                                      |  2 +-
 5 files changed, 56 insertions(+), 10 deletions(-)
 create mode 100644 freetextresponse/mixins.py

diff --git a/freetextresponse/freetextresponse.py b/freetextresponse/freetextresponse.py
index 836aeb9d..65b2884d 100644
--- a/freetextresponse/freetextresponse.py
+++ b/freetextresponse/freetextresponse.py
@@ -18,10 +18,11 @@
 from xblock.fragment import Fragment
 from xblock.validation import ValidationMessage
 from xblockutils.studio_editable import StudioEditableXBlockMixin
+from .mixins import EnforceDueDates
 
 
 @XBlock.needs("i18n")
-class FreeTextResponse(StudioEditableXBlockMixin, XBlock):
+class FreeTextResponse(EnforceDueDates, StudioEditableXBlockMixin, XBlock):
     #  pylint: disable=too-many-ancestors, too-many-instance-attributes
     """
     Enables instructors to create questions with free-text responses.
@@ -264,6 +265,7 @@ def student_view(self, context={}):
                 'problem_progress': self._get_problem_progress(),
                 'prompt': self.prompt,
                 'student_answer': self.student_answer,
+                'is_past_due': self.is_past_due(),
                 'used_attempts_feedback': self._get_used_attempts_feedback(),
                 'visibility_class': self._get_indicator_visibility_class(),
                 'word_count_message': self._get_word_count_message(),
@@ -539,6 +541,15 @@ def _get_user_alert(self, ignore_attempts=False):
             result = self._get_invalid_word_count_message(ignore_attempts)
         return result
 
+    def _can_submit(self):
+        if self.is_past_due():
+            return False
+        if self.max_attempts == 0:
+            return True
+        if self.count_attempts < self.max_attempts:
+            return True
+        return False
+
     @XBlock.json_handler
     def submit(self, data, suffix=''):
         # pylint: disable=unused-argument
@@ -547,7 +558,7 @@ def submit(self, data, suffix=''):
         """
         # Fails if the UI submit/save buttons were shut
         # down on the previous sumbisson
-        if self.max_attempts == 0 or self.count_attempts < self.max_attempts:
+        if self._can_submit():
             self.student_answer = data['student_answer']
             # Counting the attempts and publishing a score
             # even if word count is invalid.
diff --git a/freetextresponse/mixins.py b/freetextresponse/mixins.py
new file mode 100644
index 00000000..1e10ab42
--- /dev/null
+++ b/freetextresponse/mixins.py
@@ -0,0 +1,33 @@
+"""
+Mixins for the Free Text Response XBlock
+"""
+import datetime
+import pytz
+from django.conf import settings
+
+TIME_ZONE = pytz.timezone(getattr(settings, 'TIME_ZONE', pytz.utc.zone))
+
+
+class EnforceDueDates(object):  # pylint: disable=too-few-public-methods
+    """
+    xBlock Mixin to allow xblocks to check the due date
+    (taking the graceperiod into account) of the
+    subsection in which they are placed
+    """
+
+    # These values are pulled from platform.
+    # They are defaulted to None for tests.
+    due = None
+    graceperiod = None
+
+    def is_past_due(self):
+        """
+        Determine if component is past-due
+        """
+        now = datetime.datetime.utcnow().replace(tzinfo=TIME_ZONE)
+        if self.due is not None:
+            due_date = self.due
+            if self.graceperiod is not None:
+                due_date = due_date + self.graceperiod
+            return now > due_date
+        return False
diff --git a/freetextresponse/templates/freetextresponse_view.html b/freetextresponse/templates/freetextresponse_view.html
index 2ddf367d..bd63f654 100644
--- a/freetextresponse/templates/freetextresponse_view.html
+++ b/freetextresponse/templates/freetextresponse_view.html
@@ -12,12 +12,14 @@ <h2 class="problem-header">{{ display_name }}</h2>
     </div>
     <div class="capa_alert submission-received">{{ submitted_message }}</div>
     <div class="action">
-        <button class="check Submit {{ nodisplay_class }}" data-checking="{% trans "Checking..." %}" data-value={% trans "Submit" %}>
-            {% trans "Submit" %}
-        </button>
-        <button class="save {{ nodisplay_class }}" data-checking="{% trans "Checking..." %}" data-value={% trans "Save" %}>
-            {% trans "Save" %}
-        </button>
+        {% if not is_past_due %}
+            <button class="check Submit {{ nodisplay_class }}" data-checking="{% trans "Checking..." %}" data-value={% trans "Submit" %}>
+                {% trans "Submit" %}
+            </button>
+            <button class="save {{ nodisplay_class }}" data-checking="{% trans "Checking..." %}" data-value={% trans "Save" %}>
+                {% trans "Save" %}
+            </button>
+        {% endif %}
         <div class="used-attempts-feedback" aria-live="polite">{{ used_attempts_feedback }}</div>
     </div>
     <div class="capa_alert user_alert">{{ user_alert }}</div>
diff --git a/package.json b/package.json
index 6aea1794..ed366d3a 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "xblock-free-text-response",
   "title": "FreeTextResponse XBlock",
   "description": "Enables instructors to create questions with free-text responses.",
-  "version": "0.1.7",
+  "version": "0.1.8",
   "homepage": "https://github.com/Stanford-Online/xblock-free-text-response",
   "author": {
     "name": "Azim Pradhan",
diff --git a/setup.py b/setup.py
index 1bd74323..f2c09629 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def run_tests(self):
 
 setup(
     name="xblock-free-text-response",
-    version="0.1.7",
+    version="0.1.8",
     description="Enables instructors to create questions with free-text responses.",
     license='AGPL-3.0',
     packages=[