two things:

fix bug with newer HA versions by sending int id instead of string
add warning to logs when receiving unsuccessful websocket response

internal/websocket/reader.go

@@ -3,20 +3,23 @@ package websocket
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"log"
 
 	"github.com/gorilla/websocket"
 )
 
 type BaseMessage struct {
-	Type string `json:"type"`
-	Id   int64  `json:"id"`
+	Type    string `json:"type"`
+	Id      int64  `json:"id"`
+	Success bool   `json:"success"`
 }
 
 type ChanMsg struct {
-	Id   int64
-	Type string
-	Raw  []byte
+	Id      int64
+	Type    string
+	Success bool
+	Raw     []byte
 }
 
 func ListenWebsocket(conn *websocket.Conn, ctx context.Context, c chan ChanMsg) {
@@ -29,12 +32,19 @@ func ListenWebsocket(conn *websocket.Conn, ctx context.Context, c chan ChanMsg)
 			break
 		}
 
-		base := BaseMessage{}
+		base := BaseMessage{
+			// default to true for messages that don't include "success" at all
+			Success: true,
+		}
 		json.Unmarshal(bytes, &base)
+		if !base.Success {
+			fmt.Println("WARNING: received unsuccessful response:", string(bytes))
+		}
 		chanMsg := ChanMsg{
-			Type: base.Type,
-			Id:   base.Id,
-			Raw:  bytes,
+			Type:    base.Type,
+			Id:      base.Id,
+			Success: base.Success,
+			Raw:     bytes,
 		}
 
 		c <- chanMsg