Rework to use KUKSA.val databroker gRPC API

Rework to move from the WebSocket API with the older KUKSA.val
server to the gRPC "VAL" API of the databroker.

Changes include:
- All VISS WebSocket API code has been removed, and the signal
  providers replumbed to be driven by a new VssClient class with
  a homescreen-specific child class to hold all the gRPC API
  handling.
- The generated code for the VAL API and its dependencies has
  been checked in under lib/generated, as there still does not
  seem to be a good way to generate it during the Flutter build.
- The configuration file is now expected to be "homescreen.yaml"
  instead of "homescreen_config.yaml".  The authorization token
  field name has been renamed to "authorization", and there are
  new "use-tls" and "ca-certificate" configuration fields.  TLS
  is disabled by default for now, and the default CA certificate
  is /etc/kuksa.val/CA.pem.
- Updated .gitignore to cover a couple of generated files that
  weren't included.

Bug-AGL: SPEC-4762, SPEC-4903

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I1b95ed27a72435364d54ec846f2be88e3d8bb092

1 files changed, 98 insertions, 0 deletions

diff --git a/lib/vehicle-signals/vss_signal_providers.dart b/lib/vehicle-signals/vss_signal_providers.dart
new file mode 100644
index 0000000..8f0bfc1
--- /dev/null
+++ b/lib/vehicle-signals/vss_signal_providers.dart
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: Apache-2.0
+import 'dart:io';
+import 'package:meta/meta.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+// Media Volume
+
+@immutable
+class VehicleSignalMediaVolume {
+  const VehicleSignalMediaVolume({required this.volume});
+
+  final int volume;
+
+  VehicleSignalMediaVolume copyWith({int? volume}) {
+    return VehicleSignalMediaVolume(volume: volume ?? this.volume);
+  }
+}
+
+class VehicleSignalMediaVolumeNotifier
+    extends StateNotifier<VehicleSignalMediaVolume> {
+  VehicleSignalMediaVolumeNotifier() : super(_initialValue);
+
+  static final VehicleSignalMediaVolume _initialValue =
+      VehicleSignalMediaVolume(volume: 50);
+
+  void update({int? volume}) {
+    int? n = volume;
+    if (n != null) {
+      n = n.toUnsigned(8);
+      if (n > 100) n = 100;
+    }
+    state = state.copyWith(volume: n);
+  }
+}
+
+final vehicleSignalMediaVolumeProvider = StateNotifierProvider<
+    VehicleSignalMediaVolumeNotifier,
+    VehicleSignalMediaVolume>((ref) => VehicleSignalMediaVolumeNotifier());
+
+// Inside Temperature
+
+@immutable
+class VehicleSignalInsideTemp {
+  const VehicleSignalInsideTemp({required this.temp});
+
+  final double temp;
+
+  VehicleSignalInsideTemp copyWith({double? temp}) {
+    return VehicleSignalInsideTemp(temp: temp ?? this.temp);
+  }
+}
+
+class VehicleSignalInsideTempNotifier
+    extends StateNotifier<VehicleSignalInsideTemp> {
+  VehicleSignalInsideTempNotifier() : super(_initialValue);
+
+  static final VehicleSignalInsideTemp _initialValue =
+      VehicleSignalInsideTemp(temp: 25);
+
+  void update({double? temp}) {
+    state = state.copyWith(temp: temp);
+  }
+}
+
+final vehicleSignalInsideTempProvider = StateNotifierProvider<
+    VehicleSignalInsideTempNotifier, VehicleSignalInsideTemp>(
+  (ref) => VehicleSignalInsideTempNotifier(),
+);
+
+// Outside Temperature
+
+@immutable
+class VehicleSignalOutsideTemp {
+  const VehicleSignalOutsideTemp({required this.temp});
+
+  final double temp;
+
+  VehicleSignalOutsideTemp copyWith({double? temp}) {
+    return VehicleSignalOutsideTemp(temp: temp ?? this.temp);
+  }
+}
+
+class VehicleSignalOutsideTempNotifier
+    extends StateNotifier<VehicleSignalOutsideTemp> {
+  VehicleSignalOutsideTempNotifier() : super(_initialValue);
+
+  static final VehicleSignalOutsideTemp _initialValue =
+      VehicleSignalOutsideTemp(temp: 32);
+
+  void update({double? temp}) {
+    state = state.copyWith(temp: temp);
+  }
+}
+
+final vehicleSignalOutsideTempProvider = StateNotifierProvider<
+    VehicleSignalOutsideTempNotifier, VehicleSignalOutsideTemp>(
+  (ref) => VehicleSignalOutsideTempNotifier(),
+);