refacto, better scrape strategy

book/link.go

@@ -0,0 +1,23 @@
+package book
+
+type link struct {
+	href string
+	text string
+	class string
+}
+
+func NewLink(href, text, class string) link {
+	return link{href, text, class}
+}
+
+func (c link) Href() string {
+	return c.href
+}
+
+func (c link) Text() string {
+	return c.text
+}
+
+func (c link) Class() string {
+	return c.class
+}