Added a persistent config file for preferences

internal/ui/config/config.go

@@ -1,7 +1,11 @@
 // Package config provides the repository for configuration and preferences.
 package config
 
-import "sort"
+import (
+	"sort"
+)
+
+const ConfigFile = "config.json"
 
 // List of config sections.
 type Section uint8
@@ -41,3 +45,11 @@ func AppearanceAdd(name string, value EntryValue) {
 	})
 	sortSection(Appearance)
 }
+
+func Save() error {
+	return MarshalToFile(ConfigFile, Sections)
+}
+
+func Restore() error {
+	return UnmarshalFromFile(ConfigFile, &Sections)
+}

internal/ui/config/file.go

@@ -0,0 +1,67 @@
+package config
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/pkg/errors"
+)
+
+var DirPath string
+
+func init() {
+	// Load the config dir:
+	d, err := os.UserConfigDir()
+	if err != nil {
+		log.Fatalln("Failed to get config dir:", err)
+	}
+
+	// Fill Path:
+	DirPath = filepath.Join(d, "cchat-gtk")
+
+	// Ensure it exists:
+	if err := os.Mkdir(DirPath, 0755|os.ModeDir); err != nil && !os.IsExist(err) {
+		log.Fatalln("Failed to make config dir:", err)
+	}
+}
+
+func MarshalToFile(file string, from interface{}) error {
+	file = filepath.Join(DirPath, file)
+
+	f, err := os.OpenFile(file, os.O_CREATE|os.O_WRONLY|os.O_SYNC|os.O_TRUNC, 0644)
+	if err != nil {
+		return errors.Wrap(err, "Failed to open file")
+	}
+	defer f.Close()
+
+	enc := json.NewEncoder(f)
+	enc.SetIndent("", "\t")
+
+	if err := enc.Encode(from); err != nil {
+		return errors.Wrap(err, "Failed to marshal given struct")
+	}
+
+	return nil
+}
+
+func UnmarshalFromFile(file string, to interface{}) error {
+	file = filepath.Join(DirPath, file)
+
+	f, err := os.OpenFile(file, os.O_RDONLY, 0644)
+	if err != nil {
+		// Ignore does not exist error, leave struct as it is.
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	defer f.Close()
+
+	if err := json.NewDecoder(f).Decode(to); err != nil {
+		return errors.Wrap(err, "Failed to unmarshal to given struct")
+	}
+
+	return nil
+}

internal/ui/config/preferences/preferences.go

@@ -2,8 +2,10 @@ package preferences
 
 import (
 	"github.com/diamondburned/cchat-gtk/internal/gts"
+	"github.com/diamondburned/cchat-gtk/internal/log"
 	"github.com/diamondburned/cchat-gtk/internal/ui/config"
 	"github.com/gotk3/gotk3/gtk"
+	"github.com/pkg/errors"
 )
 
 type Dialog struct {
@@ -79,5 +81,12 @@ func NewPreferenceDialog() *Dialog {
 }
 
 func SpawnPreferenceDialog() {
-	NewPreferenceDialog().Show()
+	p := NewPreferenceDialog()
+	p.Connect("destroy", func() {
+		// On close, save the settings.
+		if err := config.Save(); err != nil {
+			log.Error(errors.Wrap(err, "Failed to save settings"))
+		}
+	})
+	p.Show()
 }

main.go

@@ -4,7 +4,9 @@ import (
 	"github.com/diamondburned/cchat-gtk/internal/gts"
 	"github.com/diamondburned/cchat-gtk/internal/log"
 	"github.com/diamondburned/cchat-gtk/internal/ui"
+	"github.com/diamondburned/cchat-gtk/internal/ui/config"
 	"github.com/diamondburned/cchat/services"
+	"github.com/pkg/errors"
 
 	_ "github.com/diamondburned/cchat-discord"
 	_ "github.com/diamondburned/cchat-mock"
@@ -29,6 +31,11 @@ func main() {
 			app.AddService(srvc)
 		}
 
+		// Restore the configs.
+		if err := config.Restore(); err != nil {
+			log.Error(errors.Wrap(err, "Failed to restore config"))
+		}
+
 		return app
 	})