package main

import (
	"crypto/md5"
	"fmt"
	"log"
	"regexp"
	"time"
)

type Transaction struct {
	ID      string
	Bank    Bank
	Amount  string
	Vendor  string
	Date    string
	Account string
}

func (t *Transaction) Format() string {
	return fmt.Sprintf("(%s) %v/%v: %s @ %s", cleanDate(t.Date), t.Account, t.Bank, t.Amount, t.Vendor)
}

func (t *Transaction) String() string {
	return fmt.Sprintf("%+v", *t)
}

func NewTransaction(account, amount, vendor, date string, bank Bank) *Transaction {
	regexp := regexp.MustCompile(`\s\s+`)
	t := &Transaction{
		Account: account,
		Amount:  regexp.ReplaceAllString(amount, " "),
		Vendor:  regexp.ReplaceAllString(vendor, " "),
		Bank:    bank,
		Date:    date,
	}
	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")
}