Only send events to clients who need it

- User events (star, rating, plays) only sent to same user
- Don't send to the client (browser window) that originated the event

server/events/sse_test.go

@@ -0,0 +1,61 @@
+package events
+
+import (
+	"context"
+
+	"github.com/navidrome/navidrome/model/request"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Broker", func() {
+	var b broker
+
+	BeforeEach(func() {
+		b = broker{}
+	})
+
+	Describe("shouldSend", func() {
+		var c client
+		var ctx context.Context
+		BeforeEach(func() {
+			ctx = context.Background()
+			c = client{
+				clientUniqueId: "1111",
+				username:       "janedoe",
+			}
+		})
+		Context("request has clientUniqueId", func() {
+			It("sends message for same username, different clientUniqueId", func() {
+				ctx = request.WithClientUniqueId(ctx, "2222")
+				ctx = request.WithUsername(ctx, "janedoe")
+				m := message{senderCtx: ctx}
+				Expect(b.shouldSend(m, c)).To(BeTrue())
+			})
+			It("does not send message for same username, same clientUniqueId", func() {
+				ctx = request.WithClientUniqueId(ctx, "1111")
+				ctx = request.WithUsername(ctx, "janedoe")
+				m := message{senderCtx: ctx}
+				Expect(b.shouldSend(m, c)).To(BeFalse())
+			})
+			It("does not send message for different username", func() {
+				ctx = request.WithClientUniqueId(ctx, "3333")
+				ctx = request.WithUsername(ctx, "johndoe")
+				m := message{senderCtx: ctx}
+				Expect(b.shouldSend(m, c)).To(BeFalse())
+			})
+		})
+		Context("request does not have clientUniqueId", func() {
+			It("sends message for same username", func() {
+				ctx = request.WithUsername(ctx, "janedoe")
+				m := message{senderCtx: ctx}
+				Expect(b.shouldSend(m, c)).To(BeTrue())
+			})
+			It("sends message for different username", func() {
+				ctx = request.WithUsername(ctx, "johndoe")
+				m := message{senderCtx: ctx}
+				Expect(b.shouldSend(m, c)).To(BeTrue())
+			})
+		})
+	})
+})