Add fallback case enum for Assist events preventing crashes on newer event types (#3461)

…events

<!-- Thank you for submitting a Pull Request and helping to improve Home
Assistant. Please complete the following sections to help the processing
and review of your changes. Please do not delete anything from this
template. -->

## Summary
<!-- Provide a brief summary of the changes you have made and most
importantly what they aim to achieve -->

## Screenshots
<!-- If this is a user-facing change not in the frontend, please include
screenshots in light and dark mode. -->

## Link to pull request in Documentation repository
<!-- Pull requests that add, change or remove functionality must have a
corresponding pull request in the Companion App Documentation repository
(https://github.com/home-assistant/companion.home-assistant). Please add
the number of this pull request after the "#" -->
Documentation: home-assistant/companion.home-assistant#

## Any other notes
<!-- If there is any other information of note, like if this Pull
Request is part of a bigger change, please include it here. -->

Author: bgoncal

Sources/Shared/Intents/AppIntent/AssistInApp/AssistModel.swift

@@ -80,7 +80,12 @@ public struct AssistResponse: HADataDecodable {
     public init(data: HAData) throws {
         self.data = try? data.decode("data")
         let type = try data.decode("type") as String
-        self.type = AssistEvent(rawValue: type)!
+        if let eventType = AssistEvent(rawValue: type) {
+            self.type = eventType
+        } else {
+            Current.Log.error("Unknown assist event type: \(type)")
+            self.type = .unknown
+        }
         self.timestamp = try data.decode("timestamp")
     }
 
@@ -184,6 +189,13 @@ public enum AssistEvent: String, Codable {
     case ttsStart = "tts-start"
     case ttsEnd = "tts-end"
     case error = "error"
+    case unknown
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        let rawValue = try container.decode(String.self)
+        self = AssistEvent(rawValue: rawValue) ?? .unknown
+    }
 }
 
 /// Saved in database

Sources/Shared/Intents/AppIntent/AssistInApp/AssistService.swift

@@ -189,6 +189,8 @@ public final class AssistService: AssistServiceProtocol {
             Current.Log.error("Received error while interating with Assist: \(data)")
             delegate?.didReceiveError(code: data.data?.code ?? "-1", message: data.data?.message ?? "Unknown error")
             cancellable.cancel()
+        case .unknown:
+            Current.Log.verbose("Unmapped event received from Assist")
         }
     }
 }