Simplify by passing private keys into getAccountInfo

account.go

@@ -3,6 +3,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"math/big"
 )
 
 var errAccountNotFound = fmt.Errorf("account has not yet been opened")
@@ -19,7 +20,11 @@ type blockInfo struct {
 	Contents block  `json:"contents"`
 }
 
-func getAccountInfo(address string) (info accountInfo, err error) {
+func getAccountInfo(privateKey *big.Int) (info accountInfo, err error) {
+	address, err := getAddress(privateKey)
+	if err != nil {
+		return
+	}
 	requestBody := fmt.Sprintf(`{`+
 		`"action": "account_info",`+
 		`"account": "%s",`+

balance.go

@@ -39,12 +39,8 @@ func printBalance() error {
 		return err
 	}
 	privateKey := getPrivateKey(seed, uint32(accountIndexFlag))
-	address, err := getAddress(privateKey)
-	if err != nil {
-		return err
-	}
 
-	info, err := getAccountInfo(address)
+	info, err := getAccountInfo(privateKey)
 	if err == errAccountNotFound {
 		// This info is needed to create the first block:
 		info.Frontier = "0000000000000000000000000000000000000000000000000000000000000000"

change.go

@@ -13,11 +13,7 @@ func changeRepresentative() error {
 		return err
 	}
 	privateKey := getPrivateKey(seed, uint32(accountIndexFlag))
-	address, err := getAddress(privateKey)
-	if err != nil {
-		return err
-	}
-	info, err := getAccountInfo(address)
+	info, err := getAccountInfo(privateKey)
 	if err != nil {
 		return err
 	}

send.go

@@ -18,11 +18,7 @@ func sendFunds() error {
 		return err
 	}
 	privateKey := getPrivateKey(seed, uint32(accountIndexFlag))
-	address, err := getAddress(privateKey)
-	if err != nil {
-		return err
-	}
-	info, err := getAccountInfo(address)
+	info, err := getAccountInfo(privateKey)
 	if err != nil {
 		return err
 	}