Add volume control to bottom panel

Changes:
- Import a reworked version of the KUKSA.val client code from the
  Flutter dashboard app, with the aggregated signal Riverpod provider
  replaced with per-signal providers for the signal the homescreen
  needs and a couple of temperature ones it might use.  Using separate
  providers is more in-line with recommended Riverpod best practices.
- Various tweaks to enable using Riverpod.
- Split the bottom panel out into its own widget, and add a stack in
  it to layer the default logo panel with the volume control slider,
  which has been added as a new widget definition to provide the hook
  to drive timer based lowering behavior like the Qt homescreen does.
- The KUKSA.val connection widget has been added to the bottom panel
  rather than overriding the top-level widget as in the dashboard and
  HVAC apps.  This seems preferable with respect to still providing
  some functionality in the event KUKSA.val is unavailable.
- Remove the old demo dashboard and HVAC pages that are now unused,
  along with the image assets they needed, to allow cleaning up
  pubspec.yaml and ease maintenance.

Bug-AGL: SPEC-4659

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I5d9180a3461948a58321564e71134c4961ce0ef7

1 files changed, 116 insertions, 0 deletions

diff --git a/lib/vehicle-signals/viss_methods.dart b/lib/vehicle-signals/viss_methods.dart
new file mode 100644
index 0000000..8adcc80
--- /dev/null
+++ b/lib/vehicle-signals/viss_methods.dart
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: Apache-2.0
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter_homescreen/vehicle-signals/vss_providers.dart';
+import 'package:flutter_homescreen/vehicle-signals/vss_path.dart';
+import 'package:flutter_homescreen/config.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+class VISS {
+  static const requestId = "test-id";
+
+  static void init(WebSocket socket, WidgetRef ref) {
+    authorize(socket, ref);
+    subscribe(socket, ref, VSSPath.vehicleMediaVolume);
+  }
+
+  static void update(WebSocket socket, WidgetRef ref) {
+    get(socket, ref, VSSPath.vehicleMediaVolume);
+  }
+
+  static void authorize(WebSocket socket, WidgetRef ref) {
+    final config = ref.read(ConfigStateprovider);
+
+    Map<String, dynamic> map = {
+      "action": "authorize",
+      "tokens": config.kuksaAuthToken,
+      "requestId": requestId
+    };
+    socket.add(jsonEncode(map));
+  }
+
+  static void get(WebSocket socket, WidgetRef ref, String path) {
+    final config = ref.read(ConfigStateprovider);
+
+    Map<String, dynamic> map = {
+      "action": "get",
+      "tokens": config.kuksaAuthToken,
+      "path": path,
+      "requestId": requestId
+    };
+    socket.add(jsonEncode(map));
+  }
+
+  static void set(WebSocket socket, WidgetRef ref, String path, String value) {
+    final config = ref.read(ConfigStateprovider);
+    Map<String, dynamic> map = {
+      "action": "set",
+      "tokens": config.kuksaAuthToken,
+      "path": path,
+      "requestId": requestId,
+      "value": value
+    };
+    socket.add(jsonEncode(map));
+  }
+
+  static void subscribe(WebSocket socket, WidgetRef ref, String path) {
+    final config = ref.read(ConfigStateprovider);
+
+    Map<String, dynamic> map = {
+      "action": "subscribe",
+      "tokens": config.kuksaAuthToken,
+      "path": path,
+      "requestId": requestId
+    };
+    socket.add(jsonEncode(map));
+  }
+
+  static void parseData(WidgetRef ref, String data) {
+    Map<String, dynamic> dataMap = jsonDecode(data);
+    if (dataMap["action"] == "subscription" || dataMap["action"] == "get") {
+      if (dataMap.containsKey("data")) {
+        if ((dataMap["data"] as Map<String, dynamic>).containsKey("dp") &&
+            (dataMap["data"] as Map<String, dynamic>).containsKey("path")) {
+          String path = dataMap["data"]["path"];
+          Map<String, dynamic> dp = dataMap["data"]["dp"];
+          if (dp.containsKey("value")) {
+            if (dp["value"] != "---") {
+              switch (path) {
+                case VSSPath.vehicleMediaVolume:
+                  ref
+                      .read(vehicleSignalMediaVolumeProvider.notifier)
+                      .update(volume: dp["value"]);
+                  break;
+                case VSSPath.vehicleInsideTemperature:
+                  ref
+                      .read(vehicleSignalInsideTempProvider.notifier)
+                      .update(temp: dp["value"]);
+                  break;
+                case VSSPath.vehicleOutsideTemperature:
+                  ref
+                      .read(vehicleSignalOutsideTempProvider.notifier)
+                      .update(temp: dp["value"]);
+                  break;
+                default:
+                  break;
+              }
+            } else {
+              print("ERROR: Invalid VIS response, data not available");
+            }
+          } else {
+            print("ERROR: Invalid VIS response, no 'value' key");
+          }
+        } else if ((!dataMap["data"] as Map<String, dynamic>)
+            .containsKey("path")) {
+          print("ERROR: Invalid VIS response, no 'path' key");
+        } else if ((dataMap["data"] as Map<String, dynamic>)
+            .containsKey("dp")) {
+          print("ERROR: Invalid VIS response, no 'dp' key");
+        }
+      } else {
+        print("ERROR: Invalid VIS response, no 'data' key");
+      }
+    }
+  }
+}