slopfixing / issue 004

webui/src/components/DriveDockAction/driveDockState.js

@@ -0,0 +1,24 @@
+// Drive Dock State
+// Purpose: Selects only dock-related telemetry fields needed by drive/dock controls.
+// Scope: Keeps the action component focused on rendering while this hook owns telemetry subscription details.
+
+import { useMemo } from 'react';
+import { useTelemetrySelector } from '../../context/TelemetryContext.jsx';
+import { dockTelemetryEqual, selectDockTelemetry } from '../../context/telemetryViews.js';
+
+export function deriveDriveDockStateFromTelemetry(dockTelemetry) {
+  const oiLabel = dockTelemetry?.oiModeLabel || 'Unknown';
+  const oiNormalized = oiLabel.toLowerCase();
+  const chargingLabel = dockTelemetry?.chargingStateLabel || '';
+  const docked = Boolean(dockTelemetry?.homeBase);
+  const charging = docked && chargingLabel.toLowerCase() !== 'not charging' && chargingLabel !== '';
+  const driving = oiNormalized === 'full';
+  const dockedNotCharging = docked && !charging;
+  const dockingInProgress = !docked && !charging && oiNormalized === 'passive';
+  return { driving, docked, charging, dockedNotCharging, dockingInProgress, oiLabel, chargingLabel };
+}
+
+export function useDriveDockState(roverId) {
+  const dockTelemetry = useTelemetrySelector(roverId, selectDockTelemetry, dockTelemetryEqual);
+  return useMemo(() => deriveDriveDockStateFromTelemetry(dockTelemetry), [dockTelemetry]);
+}