refactor

ots/attestation.go

@@ -0,0 +1,28 @@
+package ots
+
+import "fmt"
+
+type Attestation struct {
+	BitcoinBlockHeight uint64
+	CalendarServerURL  string
+}
+
+func (att Attestation) Name() string {
+	if att.BitcoinBlockHeight != 0 {
+		return "bitcoin"
+	} else if att.CalendarServerURL != "" {
+		return "pending"
+	} else {
+		return "unknown/broken"
+	}
+}
+
+func (att Attestation) Human() string {
+	if att.BitcoinBlockHeight != 0 {
+		return fmt.Sprintf("bitcoin(%d)", att.BitcoinBlockHeight)
+	} else if att.CalendarServerURL != "" {
+		return fmt.Sprintf("pending(%s)", att.CalendarServerURL)
+	} else {
+		return "unknown/broken"
+	}
+}