Configurable units fixes

Notable changes:
- Add pressure unit to the units model.
- Add tire pressure unit configuration page under settings.
- Rework the VSS client, provider, and the associated handling in
  the vehicle and audio state providers to make the signal updating
  code reusable for processing the result of VAL API get commands.
- Add logic to get the initial values of the used VSS signals so
  the initial application state looks sane in demo scenarios.
- Add VSS signal support to the units provider so that changes will
  be pushed out for e.g. IC use.
- Fix pressure unit use in various widgets.
- Fix up range calculation for dashboard to correctly account for
  units and the incoming VSS value being in meters.
- Fix some unit naming inconsistencies around capitalization.

Bug-AGL: SPEC-5031, SPEC-5032

Change-Id: I33ac735dfbe35283bd30c92aa157cbdb7af1837c
Signed-off-by: Scott Murray <scott.murray@konsulko.com>

3 files changed, 141 insertions, 7 deletions

diff --git a/lib/presentation/screens/settings/settings_screens/units/distance/distance_unit_screen.dart b/lib/presentation/screens/settings/settings_screens/units/distance/distance_unit_screen.dart
index 3e9c135..3d84604 100644
--- a/lib/presentation/screens/settings/settings_screens/units/distance/distance_unit_screen.dart
+++ b/lib/presentation/screens/settings/settings_screens/units/distance/distance_unit_screen.dart
@@ -11,7 +11,6 @@ class DistanceUnitPage extends ConsumerWidget {
         ref.watch(unitStateProvider.select((unit) => unit.distanceUnit));
 
     return Scaffold(
-      
       body: Column(
         children: [
           CommonTitle(
@@ -48,13 +47,14 @@ class DistanceUnitPage extends ConsumerWidget {
                         contentPadding: const EdgeInsets.symmetric(
                             horizontal: 16.0, vertical: 40.0),
                         leading: Text(
-                          'Kilometers',
+                          'kilometers',
                           style: Theme.of(context).textTheme.titleMedium,
                         ),
                         //title: Text(widget.title),
                         //enabled: isSwitchOn,
                         trailing: unit == DistanceUnit.kilometers
-                            ? const Icon(Icons.done,
+                            ? const Icon(
+                                Icons.done,
                                 color: AGLDemoColors.periwinkleColor,
                                 size: 48,
                               )
@@ -90,13 +90,14 @@ class DistanceUnitPage extends ConsumerWidget {
                       contentPadding: const EdgeInsets.symmetric(
                           horizontal: 16.0, vertical: 40.0),
                       leading: Text(
-                        'Miles',
+                        'miles',
                         style: Theme.of(context).textTheme.titleMedium,
                       ),
                       //title: Text(widget.title),
                       //enabled: isSwitchOn,
                       trailing: unit == DistanceUnit.miles
-                          ? const Icon(Icons.done,
+                          ? const Icon(
+                              Icons.done,
                               color: AGLDemoColors.periwinkleColor,
                               size: 48,
                             )
diff --git a/lib/presentation/screens/settings/settings_screens/units/pressure/pressure_unit_screen.dart b/lib/presentation/screens/settings/settings_screens/units/pressure/pressure_unit_screen.dart
new file mode 100644
index 0000000..5be8a05
--- /dev/null
+++ b/lib/presentation/screens/settings/settings_screens/units/pressure/pressure_unit_screen.dart
@@ -0,0 +1,121 @@
+import 'package:flutter_ics_homescreen/export.dart';
+
+class PressureUnitPage extends ConsumerWidget {
+  const PressureUnitPage({super.key});
+
+  static Page<void> page() =>
+      const MaterialPage<void>(child: PressureUnitPage());
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final unit =
+        ref.watch(unitStateProvider.select((unit) => unit.pressureUnit));
+
+    return Scaffold(
+      body: Column(
+        children: [
+          CommonTitle(
+            title: 'Pressure',
+            hasBackButton: true,
+            onPressed: () {
+              context.flow<AppState>().update((state) => AppState.units);
+            },
+          ),
+          Expanded(
+            child: Padding(
+              padding: const EdgeInsets.symmetric(vertical: 0, horizontal: 144),
+              child: ListView(
+                children: [
+                  Container(
+                    height: 130,
+                    decoration: BoxDecoration(
+                      gradient: LinearGradient(
+                          begin: Alignment.centerLeft,
+                          end: Alignment.centerRight,
+                          stops: unit == PressureUnit.kilopascals
+                              ? [0, 0.01, 0.8]
+                              : [0.1, 1],
+                          colors: unit == PressureUnit.kilopascals
+                              ? <Color>[
+                                  Colors.white,
+                                  Colors.blue,
+                                  const Color.fromARGB(16, 41, 98, 255)
+                                ]
+                              : <Color>[Colors.black, Colors.black12]),
+                    ),
+                    child: ListTile(
+                        minVerticalPadding: 0.0,
+                        contentPadding: const EdgeInsets.symmetric(
+                            horizontal: 16.0, vertical: 40.0),
+                        leading: Text(
+                          'kilopascals',
+                          style: Theme.of(context).textTheme.titleMedium,
+                        ),
+                        //title: Text(widget.title),
+                        //enabled: isSwitchOn,
+                        trailing: unit == PressureUnit.kilopascals
+                            ? const Icon(
+                                Icons.done,
+                                color: AGLDemoColors.periwinkleColor,
+                                size: 48,
+                              )
+                            : null,
+                        onTap: () {
+                          ref
+                              .read(unitStateProvider.notifier)
+                              .setPressureUnit(PressureUnit.kilopascals);
+                        }),
+                  ),
+                  const SizedBox(
+                    height: 5,
+                  ),
+                  Container(
+                    height: 130,
+                    decoration: BoxDecoration(
+                      gradient: LinearGradient(
+                          begin: Alignment.centerLeft,
+                          end: Alignment.centerRight,
+                          stops: unit == PressureUnit.psi
+                              ? [0, 0.01, 0.8]
+                              : [0.1, 1],
+                          colors: unit == PressureUnit.psi
+                              ? <Color>[
+                                  Colors.white,
+                                  Colors.blue,
+                                  const Color.fromARGB(16, 41, 98, 255)
+                                ]
+                              : <Color>[Colors.black, Colors.black12]),
+                    ),
+                    child: ListTile(
+                      minVerticalPadding: 0.0,
+                      contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 16.0, vertical: 40.0),
+                      leading: Text(
+                        'PSI',
+                        style: Theme.of(context).textTheme.titleMedium,
+                      ),
+                      //title: Text(widget.title),
+                      //enabled: isSwitchOn,
+                      trailing: unit == PressureUnit.psi
+                          ? const Icon(
+                              Icons.done,
+                              color: AGLDemoColors.periwinkleColor,
+                              size: 38,
+                            )
+                          : null,
+
+                      onTap: () {
+                        ref
+                            .read(unitStateProvider.notifier)
+                            .setPressureUnit(PressureUnit.psi);
+                      },
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
diff --git a/lib/presentation/screens/settings/settings_screens/units/units_screen.dart b/lib/presentation/screens/settings/settings_screens/units/units_screen.dart
index 1c6e37c..fde7505 100644
--- a/lib/presentation/screens/settings/settings_screens/units/units_screen.dart
+++ b/lib/presentation/screens/settings/settings_screens/units/units_screen.dart
@@ -30,8 +30,8 @@ class UnitsPage extends ConsumerWidget {
                       icon: Icons.calendar_month_outlined,
                       title: 'Distance',
                       unitName: unit.distanceUnit == DistanceUnit.kilometers
-                          ? 'Kilometers'
-                          : 'Miles',
+                          ? 'kilometers'
+                          : 'miles',
                       hasSwich: false,
                       voidCallback: () async {
                         context
@@ -50,6 +50,18 @@ class UnitsPage extends ConsumerWidget {
                             .flow<AppState>()
                             .update((next) => AppState.tempUnit);
                       }),
+                  UnitsTile(
+                      icon: Icons.straighten,
+                      title: 'Pressure',
+                      unitName: unit.pressureUnit == PressureUnit.kilopascals
+                          ? 'kilopascals'
+                          : 'PSI',
+                      hasSwich: true,
+                      voidCallback: () {
+                        context
+                            .flow<AppState>()
+                            .update((next) => AppState.pressureUnit);
+                      }),
                 ],
               ),
             ),