Write Config Changes to Disk

internal/config/apply.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"fmt"
+	"os"
 
 	"golang.org/x/exp/slog"
 	"nfsense.net/nfsense/internal/definitions"
@@ -23,6 +24,16 @@ func (m *ConfigManager) ApplyPendingChanges() error {
 			return err
 		}
 	}
+	m.currentConfig = m.pendingConfig.Clone()
+
+	err := m.saveConfig(m.currentConfigFilePath, m.pendingConfig)
+	if err != nil {
+		return fmt.Errorf("Save Current Config: %w", err)
+	}
+	err = os.Remove(m.pendingConfigFilePath)
+	if err != nil {
+		return fmt.Errorf("Delete Pending Config: %w", err)
+	}
 	return nil
 }
 

internal/config/discard.go

@@ -1,6 +1,16 @@
 package config
 
+import (
+	"errors"
+	"os"
+)
+
 func (m *ConfigManager) DiscardPendingConfig() error {
 	m.pendingConfig = m.currentConfig.Clone()
+
+	err := os.Remove(m.pendingConfigFilePath)
+	if !errors.Is(err, os.ErrNotExist) {
+		return err
+	}
 	return nil
 }

internal/config/save.go

@@ -0,0 +1,23 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+
+	"nfsense.net/nfsense/internal/definitions"
+)
+
+func (m *ConfigManager) saveConfig(path string, conf *definitions.Config) error {
+	data, err := json.MarshalIndent(conf, "", "	")
+	if err != nil {
+		return fmt.Errorf("Marshal Config: %w", err)
+	}
+
+	err = ioutil.WriteFile(path, data, 0644)
+	if err != nil {
+		return fmt.Errorf("Write Config: %w", err)
+	}
+
+	return nil
+}

internal/config/transaction.go

@@ -39,6 +39,11 @@ func (t *ConfigTransaction) Commit() error {
 		return fmt.Errorf("validating Config before Apply: %w", err)
 	}
 
+	err = t.configManager.saveConfig(t.configManager.pendingConfigFilePath, t.changes)
+	if err != nil {
+		return fmt.Errorf("Save Current Config: %w", err)
+	}
+
 	t.configManager.pendingConfig = t.changes.Clone()
 
 	return nil