Rework project structure

pkg/feeds/interfaces.go

@@ -0,0 +1,19 @@
+package feeds
+
+import (
+	itunes "github.com/mxpv/podcast"
+	"github.com/mxpv/podsync/pkg/api"
+)
+
+type id interface {
+	Generate(feed *api.Feed) (string, error)
+}
+
+type storage interface {
+	CreateFeed(feed *api.Feed) error
+	GetFeed(hashId string) (*api.Feed, error)
+}
+
+type builder interface {
+	Build(feed *api.Feed) (podcast *itunes.Podcast, err error)
+}