fix: delete account sync keystore (#2652)

account/accounts.go

@@ -598,3 +598,42 @@ func (m *Manager) ReEncryptKeyStoreDir(keyDirPath, oldPass, newPass string) erro
 
 	return nil
 }
+
+func (m *Manager) DeleteAccount(keyDirPath string, address types.Address) error {
+	var err error
+	var foundKeyFile string
+	err = filepath.Walk(keyDirPath, func(path string, fileInfo os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if len(foundKeyFile) > 0 || fileInfo.IsDir() {
+			return nil
+		}
+
+		rawKeyFile, e := ioutil.ReadFile(path)
+		if e != nil {
+			return fmt.Errorf("invalid account key file: %v", e)
+		}
+
+		var accountKey struct {
+			Address string `json:"address"`
+		}
+		if e := json.Unmarshal(rawKeyFile, &accountKey); e != nil {
+			return fmt.Errorf("failed to read key file: %s", e)
+		}
+
+		if types.HexToAddress("0x"+accountKey.Address).Hex() == address.Hex() {
+			foundKeyFile = path
+		}
+
+		return nil
+	})
+	if err != nil {
+		return fmt.Errorf("cannot traverse key store folder: %v", err)
+	}
+
+	if len(foundKeyFile) == 0 {
+		return fmt.Errorf("cannot locate account for address: %s", address.Hex())
+	}
+	return os.Remove(foundKeyFile)
+}

services/accounts/accounts.go

@@ -70,6 +70,11 @@ func (api *API) GetAccounts(ctx context.Context) ([]accounts.Account, error) {
 }
 
 func (api *API) DeleteAccount(ctx context.Context, address types.Address) error {
+	err := api.manager.DeleteAccount(api.config.KeyStoreDir, address)
+	if err != nil {
+		return err
+	}
+
 	return api.db.DeleteAccount(address)
 }