06/12 Add features: 1. Vendor/Contractor assignment 2. Period-over-period comparison 3. Trend Alerts (cron)

app/routes/reports.py

@@ -162,6 +162,35 @@ def index():
     facility_scores = fac_score_q.group_by(Facility.id, Facility.name)\
                                   .order_by(func.avg(Inspection.overall_score).desc()).all()
 
+    # Prior-period facility scores for period-over-period delta badges
+    period_len  = end - start
+    prior_end   = start
+    prior_start = start - period_len
+    prior_fac_q = db.session.query(
+        Facility.name,
+        func.avg(Inspection.overall_score).label('avg_score'),
+    ).join(Inspection, Facility.id == Inspection.facility_id)\
+     .filter(
+        Inspection.inspection_date >= prior_start,
+        Inspection.inspection_date <= prior_end,
+        Inspection.status == 'completed',
+        Inspection.overall_score.isnot(None),
+     )
+    if inspector_filter:
+        prior_fac_q = prior_fac_q.filter(Inspection.inspector_id == inspector_filter)
+    if customer_facility_ids is not None:
+        prior_fac_q = prior_fac_q.filter(
+            Facility.id.in_(customer_facility_ids) if customer_facility_ids else False
+        )
+    prior_scores_raw = prior_fac_q.group_by(Facility.id, Facility.name).all()
+    prior_scores_map = {r.name: round(float(r.avg_score), 2) for r in prior_scores_raw}
+    # Build delta map keyed by facility name: positive = improved, negative = declined
+    facility_deltas = {}
+    for row in facility_scores:
+        prior = prior_scores_map.get(row.name)
+        if prior is not None:
+            facility_deltas[row.name] = round(float(row.avg_score) - prior, 1)
+
     # Score trend — daily averages (line chart)
     daily_q = db.session.query(
         func.date(Inspection.inspection_date).label('day'),
@@ -226,13 +255,19 @@ def index():
         inspectors = User.query.filter_by(role='inspector', active=True)\
                                .order_by(User.full_name, User.username).all()
 
+    facility_scores_list = [{'name': r.name, 'avg_score': round(float(r.avg_score), 2), 'count': r.count} for r in facility_scores]
+    # Attach prior avg and delta to each facility score dict for the template table
+    for row in facility_scores_list:
+        row['prior_avg'] = prior_scores_map.get(row['name'])
+        row['delta']     = facility_deltas.get(row['name'])
+
     return render_template('reports/index.html',
         start=start, end=end,
         total_inspections=total_inspections,
         completed=completed,
         flagged=flagged,
         avg_score=round(float(avg_score), 2) if avg_score else None,
-        facility_scores=[{'name': r.name, 'avg_score': round(float(r.avg_score), 2), 'count': r.count} for r in facility_scores],
+        facility_scores=facility_scores_list,
         daily_scores=[{'day': str(r.day), 'avg': round(float(r.avg), 2), 'count': r.count} for r in daily_scores],
         issue_severity=[{'severity': r.severity, 'count': r.count} for r in issue_severity],
         issue_status=[{'status': r.status, 'count': r.count} for r in issue_status],