Persist, renew and delete sessions, refactor storage package, move reusable packages to pkg

pkg/letsencrypt/directory.go

@@ -0,0 +1,38 @@
+package letsencrypt
+
+import (
+	"path/filepath"
+)
+
+type Directory string
+
+func (d Directory) Domain(domain string) string {
+	return filepath.Join(string(d), "certs", domain)
+}
+
+func (d Directory) Cert(domain string) string {
+	return filepath.Join(d.Domain(domain), "cert.pem")
+}
+
+func (d Directory) Key(domain string) string {
+	return filepath.Join(d.Domain(domain), "key.pem")
+}
+
+func (d Directory) Meta(domain string) string {
+	return filepath.Join(d.Domain(domain), "metadata.json")
+}
+
+func (d Directory) User(email string) string {
+	if email == "" {
+		email = defaultUser
+	}
+	return filepath.Join(string(d), "users", email)
+}
+
+func (d Directory) UserRegistration(email string) string {
+	return filepath.Join(d.User(email), "registration.json")
+}
+
+func (d Directory) UserKey(email string) string {
+	return filepath.Join(d.User(email), "key.pem")
+}