support ledger file append

upload.go

@@ -1,15 +1,31 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"local/oauth2"
+	"log"
 	"net/http"
 	"net/url"
+	"os"
+	"strconv"
 	"strings"
+	"time"
 )
 
 func Upload(config Config, transaction *Transaction) error {
+	switch config.Uploader {
+	case UploaderTodo:
+		return uploadTodo(config, transaction)
+	case UploaderLedger:
+		return uploadLedger(config, transaction)
+	default:
+		return errors.New("not impl: uploader")
+	}
+}
+
+func uploadTodo(config Config, transaction *Transaction) error {
 	params := url.Values{
 		"list":  {config.TodoList},
 		"title": {transaction.Format()},
@@ -32,3 +48,31 @@ func Upload(config Config, transaction *Transaction) error {
 	}
 	return nil
 }
+
+func uploadLedger(config Config, transaction *Transaction) error {
+	f, err := os.OpenFile(config.TodoAddr, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	amount, _ := strconv.ParseFloat(transaction.Amount, 32)
+	amount *= -1
+	remote := "Withdrawal:"
+	if amount > 0 {
+		remote = "Deposit:"
+	}
+	remote += strings.ReplaceAll(transaction.Account, " ", "")
+	fmt.Fprintf(f, "%-50s%-s\n", formatGMailDate(transaction.Date), transaction.Account)
+	fmt.Fprintf(f, "%-50s%-50s$%.2f\n", "", transaction.Bank, amount)
+	fmt.Fprintf(f, "%-50s%-s\n", "", remote)
+	return nil
+}
+
+func formatGMailDate(s string) string {
+	time, err := time.Parse("[Mon, 2 Jan 2006 15:04:05 -0700 (MST)]", s)
+	if err != nil {
+		log.Println(s, err)
+		return s
+	}
+	return time.Format("2006-01-02")
+}