Add auth region, dealing with login form

tx.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+type TxData struct {
+	Action  string `form:"action" binding:"required"`
+	Name    string `form:"name"`
+	Date    string
+	Amount  string `form:"amount" binding:"required"`
+	Account string `form:"account"`
+}
+
+func newTx(data TxData) (result string, err error) {
+	data.Date = time.Now().Format("2006/01/02")
+	var buf bytes.Buffer
+	err = ledgerTpl.ExecuteTemplate(&buf, data.Action, data)
+	return buf.String(), nil
+}
+
+func appendToFile(tx string) (err error) {
+	f, err := os.OpenFile(LEDGER_FILE, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	buf := strings.NewReader(strings.ReplaceAll(tx, "\r", "")) // Remove CR generated from browser
+	_, err = io.Copy(f, buf)
+	return err
+}
+
+func executeScript(w io.Writer, name string) (err error) {
+	script, ok := SCRIPTS[name]
+	if !ok {
+		return fmt.Errorf("%s script not found", name)
+	}
+	cmd := exec.Command("ledger", append([]string{"--init-file", LEDGER_INIT, "--file", LEDGER_FILE}, script...)...)
+	cmd.Dir = WORKING_DIR
+	cmd.Stdout = w
+	cmd.Stderr = w
+	return cmd.Run()
+}