Split task format from internal storage

transaction.go

@@ -3,6 +3,9 @@ package main
 import (
 	"crypto/md5"
 	"fmt"
+	"log"
+	"regexp"
+	"time"
 )
 
 type Transaction struct {
@@ -13,6 +16,10 @@ type Transaction struct {
 	Date    string
 }
 
+func (t *Transaction) Format() string {
+	return fmt.Sprintf("(%s) %v: %s @ %s", cleanDate(t.Date), t.Bank, t.Amount, t.Account)
+}
+
 func (t *Transaction) String() string {
 	return fmt.Sprint(*t)
 }
@@ -27,3 +34,18 @@ func NewTransaction(amount, account, date string, bank Bank) *Transaction {
 	t.ID = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprint(t))))
 	return t
 }
+
+func cleanDate(date string) string {
+	regexp := regexp.MustCompile(`[A-Z][a-z]{2}, [0-9][0-9]? [A-Z][a-z]{2} 2[0-9]{3}`)
+	matches := regexp.FindAllString(date, -1)
+	if len(matches) < 1 {
+		return date
+	}
+	date = matches[0]
+	time, err := time.Parse(`Mon, 2 Jan 2006`, date)
+	if err != nil {
+		log.Println(err)
+		return date
+	}
+	return time.Format("Mon Jan 2")
+}