Collapse history sections to latest+modal; add charts and dashboard stats

app.py

@@ -2,7 +2,8 @@ from flask import Flask, render_template, redirect, url_for, request, flash, abo
 from sqlalchemy import create_engine, func
 from sqlalchemy.orm import scoped_session, sessionmaker
 
-from datetime import datetime
+from datetime import datetime, date, timedelta
+import json
 
 from models import Base, Battery, BatteryPctLog, Device, CapacityTest, ChargeLog
 
@@ -61,10 +62,17 @@ def create_app(config_object="config"):
         ]
         devices = db.query(Device).order_by(Device.name).all()
         devices_with_slots = [d for d in devices if d.installed_count() < d.battery_slots]
+        one_year_ago = (date.today() - timedelta(days=365)).isoformat()
+        total_charges = db.query(func.count(ChargeLog.id)).scalar() or 0
+        charges_last_year = (db.query(func.count(ChargeLog.id))
+                             .filter(ChargeLog.charged_date >= one_year_ago)
+                             .scalar()) or 0
         return render_template("dashboard.html", batteries=batteries,
                                storage_locations=storage_locations, devices=devices,
                                devices_with_slots=devices_with_slots,
-                               ha_enabled=ha_client.enabled)
+                               ha_enabled=ha_client.enabled,
+                               total_charges=total_charges,
+                               charges_last_year=charges_last_year)
 
     # ------------------------------------------------------------------ #
     # Battery — add
@@ -152,11 +160,26 @@ def create_app(config_object="config"):
                     .filter_by(battery_id=battery_id)
                     .order_by(BatteryPctLog.recorded_at.desc())
                     .all())
+        charge_logs_json = json.dumps([
+            {"id": l.id, "date": l.charged_date, "cycles": l.increment_cycles, "notes": l.notes or ""}
+            for l in charge_logs
+        ])
+        capacity_tests_json = json.dumps([
+            {"id": t.id, "date": t.tested_date, "mah": t.tested_capacity_mah, "notes": t.notes or ""}
+            for t in sorted(capacity_tests, key=lambda t: (t.tested_date, t.id), reverse=True)
+        ])
+        pct_logs_json = json.dumps([
+            {"recorded_at": str(l.recorded_at), "pct": l.percentage, "source": l.source or ""}
+            for l in pct_logs
+        ])
         return render_template("battery_detail.html", battery=battery,
                                storage_locations=storage_locations,
                                capacity_tests=capacity_tests,
                                charge_logs=charge_logs,
-                               pct_logs=pct_logs)
+                               pct_logs=pct_logs,
+                               charge_logs_json=charge_logs_json,
+                               capacity_tests_json=capacity_tests_json,
+                               pct_logs_json=pct_logs_json)
 
     # ------------------------------------------------------------------ #
     # Battery — edit notes