Add persistent car performance analytics

server/src/database.ts

@@ -69,6 +69,59 @@ function migrate(database: CompanionDatabase): void {
       created_at TEXT NOT NULL,
       UNIQUE(target_type, target_value)
     );
+
+    CREATE TABLE IF NOT EXISTS car_telemetry_samples (
+      recorded_at INTEGER PRIMARY KEY,
+      speed_kph REAL,
+      wheel_angle_degrees REAL,
+      battery_percent REAL,
+      range_km REAL,
+      battery_voltage REAL,
+      total_consumption_kwh REAL,
+      charging_status INTEGER,
+      charging_power_kw REAL
+    ) WITHOUT ROWID;
+
+    CREATE TABLE IF NOT EXISTS car_telemetry_hourly (
+      bucket_start INTEGER PRIMARY KEY,
+      sample_count INTEGER NOT NULL,
+      speed_sum REAL NOT NULL,
+      speed_count INTEGER NOT NULL,
+      speed_max REAL,
+      soc_sum REAL NOT NULL,
+      soc_count INTEGER NOT NULL,
+      soc_min REAL,
+      soc_max REAL,
+      range_sum REAL NOT NULL,
+      range_count INTEGER NOT NULL,
+      range_max REAL,
+      charge_power_sum REAL NOT NULL,
+      charge_power_count INTEGER NOT NULL,
+      charge_power_max REAL,
+      distance_km REAL NOT NULL,
+      driving_seconds REAL NOT NULL,
+      charging_seconds REAL NOT NULL
+    ) WITHOUT ROWID;
+
+    CREATE TABLE IF NOT EXISTS car_telemetry_stats (
+      id INTEGER PRIMARY KEY CHECK (id = 1),
+      first_sample_at INTEGER,
+      last_sample_at INTEGER,
+      sample_count INTEGER NOT NULL DEFAULT 0,
+      peak_speed_kph REAL,
+      peak_speed_at INTEGER,
+      peak_charging_power_kw REAL,
+      peak_charging_power_at INTEGER,
+      max_observed_range_km REAL,
+      max_observed_range_at INTEGER,
+      tracked_distance_km REAL NOT NULL DEFAULT 0,
+      driving_seconds REAL NOT NULL DEFAULT 0,
+      charging_seconds REAL NOT NULL DEFAULT 0,
+      charge_sessions INTEGER NOT NULL DEFAULT 0,
+      soc_used_percent REAL NOT NULL DEFAULT 0
+    );
+
+    INSERT OR IGNORE INTO car_telemetry_stats (id) VALUES (1);
   `);
 
   database