figured out how to get conn/ctx into users method calls - by passing a configured service object to their callback functions

internal/services/light.go

@@ -0,0 +1,50 @@
+package services
+
+import (
+	"context"
+
+	"github.com/saml-dev/gome-assistant/internal/network"
+	"nhooyr.io/websocket"
+)
+
+type Light struct {
+	conn websocket.Conn
+	ctx  context.Context
+}
+
+type LightRequest struct {
+	Id      int    `json:"id"`
+	Type    string `json:"type"`
+	Domain  string `json:"domain"`
+	Service string `json:"service"`
+	Target  struct {
+		EntityId string `json:"entity_id"`
+	} `json:"target"`
+}
+
+func LightOnRequest(entityId string) LightRequest {
+	req := LightRequest{
+		Id:      5,
+		Type:    "call_service",
+		Domain:  "light",
+		Service: "turn_on",
+	}
+	req.Target.EntityId = entityId
+	return req
+}
+
+func LightOffRequest(entityId string) LightRequest {
+	req := LightOnRequest(entityId)
+	req.Service = "turn_off"
+	return req
+}
+
+func (l Light) TurnOn(entityId string) {
+	req := LightOnRequest(entityId)
+	network.WriteMessage(req, l.conn, l.ctx)
+}
+
+func (l Light) TurnOff(entityId string) {
+	req := LightOffRequest(entityId)
+	network.WriteMessage(req, l.conn, l.ctx)
+}