Add in support for getting and displaying ETA

lms/djangoapps/open_ended_grading/open_ended_grading_util.py

+def convert_seconds_to_human_readable(seconds):
+    if seconds < 60:
+        human_string = "{0} seconds".format(seconds)
+    elif seconds < 60 * 60:
+        human_string = "{0} minutes".format(round(seconds/60,1))
+    elif seconds < (24*60*60):
+        human_string = "{0} hours".format(round(seconds/(60*60),1))
+    else:
+        human_string = "{0} days".format(round(seconds/(60*60*24),1))
+
+    eta_string = "In {0}.".format(human_string)
+    return eta_string
\ No newline at end of file

lms/djangoapps/open_ended_grading/views.py

@@ -22,6 +22,7 @@ from xmodule.modulestore.django import modulestore
 from xmodule.modulestore import search
 
 from django.http import HttpResponse, Http404, HttpResponseRedirect
+import open_ended_grading_util
 
 log = logging.getLogger(__name__)
 
@@ -150,6 +151,18 @@ def student_problem_list(request, course_id):
             problem_url_parts = search.path_to_location(modulestore(), course.id, problem_list[i]['location'])
             problem_url = generate_problem_url(problem_url_parts, base_course_url)
             problem_list[i].update({'actual_url': problem_url})
+            eta_available = problem_list[i]['eta_available']
+            if isinstance(eta_available, basestring):
+                eta_available = (eta_available.lower() == "true")
+
+            eta_string = "N/A"
+            if eta_available:
+                try:
+                    eta_string = open_ended_grading_util.convert_seconds_to_human_readable(int(problem_list[i]['eta']))
+                except:
+                    #This is a student_facing_error
+                    eta_string = "Error getting ETA."
+            problem_list[i].update({'eta_string' : eta_string})
 
     except GradingServiceError:
         #This is a student_facing_error

lms/templates/open_ended_problems/open_ended_problems.html

@@ -27,7 +27,8 @@
             <tr>
                 <th>Problem Name</th>
                 <th>Status</th>
-                <th>Type of Grading</th>
+                <th>Grader Type</th>
+                <th>ETA</th>
             </tr>
             %for problem in problem_list:
             <tr>
@@ -40,6 +41,9 @@
                 <td> 
                     ${problem['grader_type']}
                 </td>
+                <td>
+                    ${problem['eta_string']}
+                </td>
             </tr>
             %endfor
         </table>