refactoring package organization

ui/browsing/router.go

@@ -0,0 +1,66 @@
+package browsing
+
+import (
+	"supersonic/backend"
+)
+
+type PageName int
+
+const (
+	Blank PageName = iota
+	Album
+	Albums
+	Artist
+	Artists
+	Playlist
+	Playlists
+)
+
+type Route struct {
+	Page PageName
+	Arg  string
+}
+
+func AlbumsRoute(sortOrder backend.AlbumSortOrder) Route {
+	return Route{Page: Albums, Arg: string(sortOrder)}
+}
+
+func ArtistRoute(artistID string) Route {
+	return Route{Page: Artist, Arg: artistID}
+}
+
+func AlbumRoute(albumID string) Route {
+	return Route{Page: Album, Arg: albumID}
+}
+
+type NavigationHandler interface {
+	SetPage(Page)
+}
+
+type Router struct {
+	App *backend.App
+	Nav NavigationHandler
+}
+
+func NewRouter(app *backend.App, nav NavigationHandler) Router {
+	return Router{
+		App: app,
+		Nav: nav,
+	}
+}
+
+func (r Router) CreatePage(rte Route) Page {
+	switch rte.Page {
+	case Album:
+		return NewAlbumPage(rte.Arg, r.App.LibraryManager, r.App.ImageManager, r.OpenRoute)
+	case Albums:
+		return NewAlbumsPage("Albums", rte.Arg, r.App.LibraryManager, r.App.ImageManager, r.OpenRoute)
+	case Artist:
+		return NewArtistPage(rte.Arg, r.App.ServerManager, r.App.ImageManager, r.OpenRoute)
+	}
+	return nil
+}
+
+func (r Router) OpenRoute(rte Route) {
+	r.Nav.SetPage(r.CreatePage(rte))
+}