Update Events (#10)

This update restructures the events page code and provides additional functionality.
- Overwrite old entries on re-submission of previously used emails
- Build data and stats caches on launch for use in submission checks and stats regeneration
- Update to form content
- Move stats function to separate utils file

Reviewed-on: ayo/website#10
Co-authored-by: Jimmy Vargo <james@ayo.tokyo>
Co-committed-by: Jimmy Vargo <james@ayo.tokyo>

events/utils.py

@@ -0,0 +1,28 @@
+from form_content import FormContent
+
+
+def get_data_stats(data: dict) -> dict:
+    summed = {
+        key: {
+            'sum': 0,
+            'total': 0,
+            'percent': 0
+        } for key in FormContent.all_keys
+    }
+    topic_other = set()
+
+    for entry in data.values():
+        for key, value in dict.items(entry):
+            if key == 'topic-other' and value is not None:
+                topic_other |= { value }
+            if isinstance(value, bool):
+                _sum = summed[key]['sum'] if key in summed else 0
+                _sum = _sum + 1 if value is True else _sum
+                total = summed[key]['total'] + 1 if key in summed else 1
+                summed[key] = {
+                    'sum': _sum,
+                    'total': total,
+                    'percent': f'{((_sum / total) * 100):.1f}'
+                }
+    summed['topic-other'] = list(topic_other)
+    return summed