add intro

internal/modules/scenario_archive/archive.go

@@ -104,6 +104,11 @@ func (a *scenarioArchive) Pack(
 			return nil, err
 		}
 	}
+	if story.Introduction != nil {
+		if err := addRef(story.Introduction.Audio); err != nil {
+			return nil, err
+		}
+	}
 	for _, place := range story.Places {
 		if err := addRef(place.Image); err != nil {
 			return nil, err
@@ -137,6 +142,9 @@ func (a *scenarioArchive) Pack(
 			application.Image = rewriteRef(application.Image, archivePathOf)
 		}
 	}
+	if story.Introduction != nil {
+		story.Introduction.Audio = rewriteRef(story.Introduction.Audio, archivePathOf)
+	}
 
 	doc := ScenarioJSON{
 		Version:     Version,

internal/modules/scenario_archive/archive_test.go

@@ -101,6 +101,48 @@ func TestPackUnpackRoundTrip(t *testing.T) {
 	}
 }
 
+func TestPackUnpackIntroAudioRoundTrip(t *testing.T) {
+	description := "desc"
+	image := "cover.png"
+	scenario := &repos.Scenario{
+		ID:          1,
+		Name:        "С введением",
+		Description: &description,
+		Image:       &image,
+		Scenario: `{"introduction":{"text":"Введение","audio":"intro.mp3"},"places":[
+			{"code":"club","name":"Клуб","text":"Тёмный зал","image":"club.png"}
+		]}`,
+	}
+	files := memoryFiles{
+		"cover.png": []byte("cover-bytes"),
+		"club.png":  []byte("club-bytes"),
+		"intro.mp3": []byte("intro-audio-bytes"),
+	}
+
+	data, err := testArchive.Pack(context.Background(), scenario, testDomain, files.get)
+	if err != nil {
+		t.Fatalf("Pack: %v", err)
+	}
+
+	bundle, err := testArchive.Unpack(data)
+	if err != nil {
+		t.Fatalf("Unpack: %v", err)
+	}
+
+	if bundle.Scenario.Story.Introduction == nil {
+		t.Fatal("Story.Introduction = nil, want введение")
+	}
+	if bundle.Scenario.Story.Introduction.Text != "Введение" {
+		t.Errorf("Introduction.Text = %q, want %q", bundle.Scenario.Story.Introduction.Text, "Введение")
+	}
+	if bundle.Scenario.Story.Introduction.Audio != "images/intro.mp3" {
+		t.Errorf("Introduction.Audio = %q, want %q", bundle.Scenario.Story.Introduction.Audio, "images/intro.mp3")
+	}
+	if _, ok := bundle.Files["images/intro.mp3"]; !ok {
+		t.Errorf("в архиве нет аудиофайла %q", "images/intro.mp3")
+	}
+}
+
 func TestPackExternalURLsKeptAndNotFetched(t *testing.T) {
 	description := "desc"
 	scenario := &repos.Scenario{