feat(ntfy): add the HTTP client, stream manager, and account discovery

Speak the ntfy JSON API directly: subscribe, publish, group topics that share a server and credentials, reconnect with backoff and a since cursor, and list account subscriptions, reservations, and ACL grants.

internal/ntfy/account_test.go

@@ -0,0 +1,82 @@
+package ntfy
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"lazyntfy/internal/config"
+)
+
+func TestAccountTopics(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != "Bearer tk_test" {
+			t.Errorf("missing auth")
+		}
+		switch r.URL.Path {
+		case "/v1/account":
+			_, _ = w.Write([]byte(`{
+				"sync_topic":"st_skip",
+				"subscriptions":[
+					{"base_url":"", "topic":"alerts", "display_name":"Alerts"},
+					{"topic":"st_skip"},
+					{"topic":"ops*"}
+				],
+				"reservations":[{"topic":"backups"}]
+			}`))
+		case "/v1/users":
+			_, _ = w.Write([]byte(`[
+				{"username":"ada","grants":[
+					{"topic":"stats","permission":"read-only"},
+					{"topic":"*","permission":"read-write"},
+					{"topic":"secret","permission":"deny-all"}
+				]}
+			]`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer srv.Close()
+
+	subs, err := NewClient().AccountTopics(context.Background(), srv.URL, config.Auth{Token: "tk_test"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	got := map[string]string{}
+	for _, sub := range subs {
+		got[sub.Name] = sub.Display
+		if sub.Auth.Token != "tk_test" {
+			t.Fatal("auth dropped")
+		}
+	}
+	_, hasBackups := got["backups"]
+	_, hasStats := got["stats"]
+	if got["alerts"] != "Alerts" || !hasBackups || !hasStats {
+		t.Fatalf("%v", got)
+	}
+	if _, ok := got["st_skip"]; ok {
+		t.Fatal("sync topic included")
+	}
+	if _, ok := got["secret"]; ok {
+		t.Fatal("denied topic included")
+	}
+	if _, ok := got["*"]; ok || len(got) != 3 {
+		t.Fatalf("%v", got)
+	}
+}
+
+func TestAccountTopicsIgnoresUsersForbidden(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/v1/users" {
+			w.WriteHeader(http.StatusForbidden)
+			return
+		}
+		_, _ = w.Write([]byte(`{"reservations":[{"topic":"alerts"}]}`))
+	}))
+	defer srv.Close()
+	subs, err := NewClient().AccountTopics(context.Background(), srv.URL, config.Auth{Token: "tk_test"})
+	if err != nil || len(subs) != 1 || subs[0].Name != "alerts" {
+		t.Fatalf("%v %+v", err, subs)
+	}
+}