work on #6, needs tests

symposion/schedule/forms.py

@@ -1,9 +1,17 @@
+import csv
+import time
+
+from datetime import datetime
+
 from django import forms
+from django.contrib import messages
+from django.db import IntegrityError, transaction
 from django.db.models import Q
 
 from markitup.widgets import MarkItUpWidget
 
-from symposion.schedule.models import Presentation
+from symposion.schedule.models import (Day, Presentation, Room, SlotKind, Slot,
+                                       SlotRoom)
 
 
 class SlotEditForm(forms.Form):
@@ -40,3 +48,106 @@ class SlotEditForm(forms.Form):
             "initial": self.slot.content_override,
         }
         return forms.CharField(**kwargs)
+
+
+class ScheduleSectionForm(forms.Form):
+    ROOM_KEY = 'room'
+    DATE_KEY = 'date'
+    START_KEY = 'time_start'
+    END_KEY = 'time_end'
+    KIND = 'kind'
+
+    filename = forms.FileField(
+        label='Select a CSV file to import:',
+        required=False
+    )
+
+    def __init__(self, *args, **kwargs):
+        self.schedule = kwargs.pop("schedule")
+        super(ScheduleSectionForm, self).__init__(*args, **kwargs)
+
+    def clean_filename(self):
+        if 'submit' in self.data:
+            fname = self.cleaned_data.get('filename')
+            if not fname or not fname.name.endswith('.csv'):
+                raise forms.ValidationError(u'Please upload a .csv file')
+            return fname
+
+    def _get_start_end_times(self, data):
+        "Return start and end time objects"
+        start_time = time.strptime(data[self.START_KEY], '%I:%M %p')
+        start = datetime(100, 1, 1, start_time.tm_hour, start_time.tm_min, 00)
+        end_time = time.strptime(data[self.END_KEY], '%I:%M %p')
+        end = datetime(100, 1, 1, end_time.tm_hour, end_time.tm_min, 00)
+        return start.time(), end.time()
+
+    def _build_rooms(self, data):
+        "Get or Create Rooms based on schedule type and set of Tracks"
+        created_rooms = []
+        rooms = sorted(set([x[self.ROOM_KEY] for x in data]))
+        for i, room in enumerate(rooms):
+            room, created = Room.objects.get_or_create(
+                schedule=self.schedule, name=room, order=i
+            )
+            if created:
+                created_rooms.append(room)
+        return created_rooms
+
+    def _build_days(self, data):
+        "Get or Create Days based on schedule type and set of Days"
+        created_days = []
+        days = set([x[self.DATE_KEY] for x in data])
+        for day in days:
+            date = datetime.strptime(day, "%m/%d/%Y")
+            day, created = Day.objects.get_or_create(
+                schedule=self.schedule, date=date
+            )
+            if created:
+                created_days.append(day)
+        return created_days
+
+    def build_schedule(self):
+        created_items = []
+        reader = csv.DictReader(self.cleaned_data.get('filename'))
+        data = [dict((k.strip(), v.strip()) for k, v in x.items()) for x in reader]
+        # build rooms
+        created_items.extend(self._build_rooms(data))
+        # build_days
+        created_items.extend(self._build_days(data))
+        # build Slot  -> SlotRoom
+        for row in data:
+            room = Room.objects.get(
+                schedule=self.schedule, name=row[self.ROOM_KEY]
+            )
+            date = datetime.strptime(row[self.DATE_KEY], "%m/%d/%Y")
+            day = Day.objects.get(schedule=self.schedule, date=date)
+            start, end = self._get_start_end_times(row)
+            slot_kind, created = SlotKind.objects.get_or_create(
+                label=row[self.KIND], schedule=self.schedule
+            )
+            if created:
+                created_items.append(slot_kind)
+            if row[self.KIND] == 'plenary':
+                slot, created = Slot.objects.get_or_create(
+                    kind=slot_kind, day=day, start=start, end=end
+                )
+                if created:
+                    created_items.append(slot)
+            else:
+                slot = Slot.objects.create(
+                    kind=slot_kind, day=day, start=start, end=end
+                )
+                created_items.append(slot)
+            try:
+                SlotRoom.objects.create(slot=slot, room=room)
+            except IntegrityError:
+                transaction.rollback()
+                # delete all created objects and report error
+                for x in created_items:
+                    x.delete()
+                return messages.ERROR, u'An overlap occurred; the import was cancelled.'
+        return messages.SUCCESS, u'Your schedule has been imported.'
+
+    def delete_schedule(self):
+        self.schedule.day_set.all().delete()
+        return messages.SUCCESS, u'Your schedule has been deleted.'

symposion/schedule/views.py

@@ -3,8 +3,9 @@ from django.shortcuts import render, get_object_or_404, redirect
 from django.template import loader, Context
 
 from django.contrib.auth.decorators import login_required
+from django.contrib import messages
 
-from symposion.schedule.forms import SlotEditForm
+from symposion.schedule.forms import SlotEditForm, ScheduleSectionForm
 from symposion.schedule.models import Schedule, Day, Slot, Presentation
 from symposion.schedule.timetable import TimeTable
 
@@ -100,11 +101,24 @@ def schedule_edit(request, slug=None):
 
     schedule = fetch_schedule(slug)
 
+    if request.method == "POST":
+        form = ScheduleSectionForm(
+            request.POST, request.FILES, schedule=schedule
+        )
+        if form.is_valid():
+            if 'submit' in form.data:
+                msg = form.build_schedule()
+            elif 'delete' in form.data:
+                msg = form.delete_schedule()
+            messages.add_message(request, msg[0], msg[1])
+    else:
+        form = ScheduleSectionForm(schedule=schedule)
     days_qs = Day.objects.filter(schedule=schedule)
     days = [TimeTable(day) for day in days_qs]
     ctx = {
         "schedule": schedule,
         "days": days,
+        "form": form
     }
     return render(request, "schedule/schedule_edit.html", ctx)
 

symposion/templates/schedule/schedule_edit.html

@@ -24,7 +24,13 @@
                 {% include "schedule/_edit_grid.html" %}
             {% endfor %}
         </div>
-        
+          {% if request.user.is_staff %}
+        <form id="schedule-builder" action="." method="post" enctype="multipart/form-data">{% csrf_token %}
+            {{ form.as_p }}
+            <input type="submit" name="submit" value="Submit" />
+            <input type="submit" id="delete" name="delete" value="Delete Schedule" />
+        </form>
+          {% endif %}
         <div class="modal fade hide in" id="slotEditModal"></div>
     </div>
 {% endblock %}
@@ -41,5 +47,19 @@
                 e.preventDefault();
             });
         });
+        $(function() {
+           //submit event handler
+            $("form#schedule-builder :submit").click(function(e) {
+                var name = this.name;
+                if(name == 'delete') {
+                    if (!confirm("Are you sure you want to delete the schedule?"))
+                        {
+                            e.preventDefault();
+                            return;
+                        }
+                }
+            });
+        });
+
     </script>
 {% endblock %}