diff --git a/config/config.go b/config/config.go
deleted file mode 100644
index 5bbe4fe..0000000
--- a/config/config.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package config
-
-var General = struct {
-	UserAgent          string
-	Mouse              bool
-	Notifications      bool
-	FetchMessagesLimit int
-}{
-	UserAgent:          "Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0",
-	Mouse:              true,
-	Notifications:      true,
-	FetchMessagesLimit: 50,
-}
-
-var Keybindings = struct {
-	FocusChannelsTreeView  []string
-	FocusMessagesView      []string
-	FocusMessageInputField []string
-
-	SelectPreviousMessage       []string
-	SelectNextMessage           []string
-	SelectFirstMessage          []string
-	SelectLastMessage           []string
-	SelectMessageReference      []string
-	ReplySelectedMessage        []string
-	MentionReplySelectedMessage []string
-	CopySelectedMessage         []string
-}{
-	FocusChannelsTreeView:  []string{"Alt+Left"},
-	FocusMessagesView:      []string{"Alt+Right"},
-	FocusMessageInputField: []string{"Alt+Down"},
-
-	SelectPreviousMessage:       []string{"Up"},
-	SelectNextMessage:           []string{"Down"},
-	SelectFirstMessage:          []string{"Home"},
-	SelectLastMessage:           []string{"End"},
-	ReplySelectedMessage:        []string{"Rune[r]"},
-	MentionReplySelectedMessage: []string{"Rune[R]"},
-	CopySelectedMessage:         []string{"Rune[c]"},
-	SelectMessageReference:      []string{"Rune[m]"},
-}
diff --git a/config/mod.go b/config/mod.go
new file mode 100644
index 0000000..9c113ee
--- /dev/null
+++ b/config/mod.go
@@ -0,0 +1,91 @@
+package config
+
+import (
+	"encoding/json"
+	"os"
+)
+
+type GeneralConfig struct {
+	UserAgent          string `json:"userAgent"`
+	FetchMessagesLimit int    `json:"fetchMessagesLimit"`
+	Mouse              bool   `json:"mouse"`
+	Notifications      bool   `json:"notifications"`
+}
+
+type KeybindingsConfig struct {
+	FocusChannelsTreeView  []string `json:"focusChannelsTreeView"`
+	FocusMessagesTextView  []string `json:"focusMessagesTextView"`
+	FocusMessageInputField []string `json:"focusMessageInputField"`
+
+	SelectPreviousMessage       []string `json:"selectPreviousMessage"`
+	SelectNextMessage           []string `json:"selectNextMessage"`
+	SelectFirstMessage          []string `json:"selectFirstMessage"`
+	SelectLastMessage           []string `json:"selectLastMessage"`
+	SelectMessageReference      []string `json:"selectMessageReference"`
+	ReplySelectedMessage        []string `json:"replySelectedMessage"`
+	MentionReplySelectedMessage []string `json:"mentionReplySelectedMessage"`
+	CopySelectedMessage         []string `json:"copySelectedMessage"`
+}
+
+type Config struct {
+	General     GeneralConfig     `json:"general"`
+	Keybindings KeybindingsConfig `json:"keybindings"`
+}
+
+func New() *Config {
+	return &Config{
+		General: GeneralConfig{
+			UserAgent:          "Mozilla/5.0 (X11; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0",
+			FetchMessagesLimit: 50,
+			Mouse:              true,
+			Notifications:      true,
+		},
+		Keybindings: KeybindingsConfig{
+			FocusChannelsTreeView:  []string{"Alt+Left"},
+			FocusMessagesTextView:  []string{"Alt+Right"},
+			FocusMessageInputField: []string{"Alt+Down"},
+
+			SelectPreviousMessage:       []string{"Up"},
+			SelectNextMessage:           []string{"Down"},
+			SelectFirstMessage:          []string{"Home"},
+			SelectLastMessage:           []string{"End"},
+			SelectMessageReference:      []string{"Rune[m]"},
+			ReplySelectedMessage:        []string{"Rune[r]"},
+			MentionReplySelectedMessage: []string{"Rune[R]"},
+			CopySelectedMessage:         []string{"Rune[c]"},
+		},
+	}
+}
+
+func (c *Config) Load() {
+	configPath, err := os.UserConfigDir()
+	if err != nil {
+		panic(err)
+	}
+
+	configPath += "/discordo.json"
+	f, err := os.OpenFile(configPath, os.O_CREATE|os.O_RDWR, os.ModePerm)
+	if err != nil {
+		panic(err)
+	}
+
+	fi, err := f.Stat()
+	if err != nil {
+		panic(err)
+	}
+	// If the size of the file is zero (the file is empty), write the default configuration to the file.
+	if fi.Size() == 0 {
+		e := json.NewEncoder(f)
+		e.SetIndent("", "\t")
+
+		err = e.Encode(c)
+		if err != nil {
+			panic(err)
+		}
+	} else {
+		err = json.NewDecoder(f).Decode(&c)
+		if err != nil {
+			panic(err)
+		}
+	}
+}
diff --git a/main.go b/main.go
index 4deb130..74aa4e8 100644
--- a/main.go
+++ b/main.go
@@ -5,7 +5,6 @@ import (
 	"os"
 
 	"github.com/ayntgl/discordgo"
-	"github.com/ayntgl/discordo/config"
 	"github.com/ayntgl/discordo/ui"
 	"github.com/rivo/tview"
 	"github.com/zalando/go-keyring"
@@ -15,7 +14,7 @@ const service = "discordo"
 
 func main() {
 	app := ui.NewApp()
-	app.EnableMouse(config.General.Mouse)
+	app.Config.Load()
 
 	token := os.Getenv("DISCORDO_TOKEN")
 	if token == "" {
@@ -28,9 +27,8 @@ func main() {
 			panic(err)
 		}
 
-		ui.DrawMainFlex(app)
 		app.
-			SetRoot(app.MainFlex, true).
+			SetRoot(ui.NewMainFlex(app), true).
 			SetFocus(app.GuildsList)
 	} else {
 		app.LoginForm = ui.NewLoginForm(func() {
@@ -39,7 +37,7 @@ func main() {
 		app.SetRoot(app.LoginForm, true)
 	}
 
-	if err := app.Run(); err != nil {
+	if err := app.EnableMouse(app.Config.General.Mouse).Run(); err != nil {
 		panic(err)
 	}
 }
@@ -59,7 +57,7 @@ func onLoginFormLoginButtonSelected(app *ui.App) {
 
 	if lr.Token != "" && !lr.MFA {
 		app.
-			SetRoot(app.MainFlex, true).
+			SetRoot(ui.NewMainFlex(app), true).
 			SetFocus(app.GuildsList)
 
 		err = app.Connect(lr.Token)
@@ -82,7 +80,7 @@ func onLoginFormLoginButtonSelected(app *ui.App) {
 			}
 
 			app.
-				SetRoot(app.MainFlex, true).
+				SetRoot(ui.NewMainFlex(app), true).
 				SetFocus(app.GuildsList)
 
 			err = app.Connect(lr.Token)
diff --git a/ui/app.go b/ui/app.go
index 7788f15..7d8e18c 100644
--- a/ui/app.go
+++ b/ui/app.go
@@ -14,7 +14,6 @@ type App struct {
 	*tview.Application
 
 	LoginForm         *tview.Form
-	MainFlex          *tview.Flex
 	GuildsList        *tview.List
 	ChannelsTreeView  *tview.TreeView
 	MessagesTextView  *tview.TextView
@@ -23,15 +22,14 @@ type App struct {
 	Session         *discordgo.Session
 	SelectedChannel *discordgo.Channel
 	SelectedMessage int
+	Config          *config.Config
 }
 
 func NewApp() *App {
 	s, _ := discordgo.New()
 	return &App{
-		Application: tview.NewApplication(),
-
+		Application:       tview.NewApplication(),
 		LoginForm:         tview.NewForm(),
-		MainFlex:          tview.NewFlex(),
 		GuildsList:        tview.NewList(),
 		ChannelsTreeView:  tview.NewTreeView(),
 		MessagesTextView:  tview.NewTextView(),
@@ -39,12 +37,13 @@ func NewApp() *App {
 
 		Session:         s,
 		SelectedMessage: -1,
+		Config:          config.New(),
 	}
 }
 
 func (app *App) Connect(token string) error {
 	app.Session.Token = token
-	app.Session.UserAgent = config.General.UserAgent
+	app.Session.UserAgent = app.Config.General.UserAgent
 
 	app.Session.Identify = discordgo.Identify{
 		Token:          token,
@@ -85,7 +84,7 @@ func (app *App) onSessionReady(_ *discordgo.Session, r *discordgo.Ready) {
 
 func (app *App) onSessionMessageCreate(_ *discordgo.Session, m *discordgo.MessageCreate) {
 	if app.SelectedChannel == nil || app.SelectedChannel.ID != m.ChannelID {
-		if config.General.Notifications {
+		if app.Config.General.Notifications {
 			for _, u := range m.Mentions {
 				if u.ID == app.Session.State.User.ID {
 					g, err := app.Session.State.Guild(m.GuildID)
diff --git a/ui/handlers.go b/ui/handlers.go
index 427b77c..7db8297 100644
--- a/ui/handlers.go
+++ b/ui/handlers.go
@@ -6,20 +6,19 @@ import (
 
 	"github.com/atotto/clipboard"
 	"github.com/ayntgl/discordgo"
-	"github.com/ayntgl/discordo/config"
 	"github.com/ayntgl/discordo/util"
 	"github.com/gdamore/tcell/v2"
 	"github.com/rivo/tview"
 )
 
 func onAppInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey {
-	if hasKeybinding(config.Keybindings.FocusChannelsTreeView, e.Name()) {
+	if hasKeybinding(app.Config.Keybindings.FocusChannelsTreeView, e.Name()) {
 		app.SetFocus(app.ChannelsTreeView)
 		return nil
-	} else if hasKeybinding(config.Keybindings.FocusMessagesView, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.FocusMessagesTextView, e.Name()) {
 		app.SetFocus(app.MessagesTextView)
 		return nil
-	} else if hasKeybinding(config.Keybindings.FocusMessageInputField, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.FocusMessageInputField, e.Name()) {
 		app.SetFocus(app.MessageInputField)
 		return nil
 	}
@@ -121,7 +120,7 @@ func onChannelsTreeViewSelected(app *App, n *tview.TreeNode) {
 	app.SetFocus(app.MessageInputField)
 
 	go func() {
-		ms, err := app.Session.ChannelMessages(c.ID, config.General.FetchMessagesLimit, "", "", "")
+		ms, err := app.Session.ChannelMessages(c.ID, app.Config.General.FetchMessagesLimit, "", "", "")
 		if err != nil {
 			return
 		}
@@ -145,7 +144,7 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 		return nil
 	}
 
-	if hasKeybinding(config.Keybindings.SelectPreviousMessage, e.Name()) {
+	if hasKeybinding(app.Config.Keybindings.SelectPreviousMessage, e.Name()) {
 		if len(app.MessagesTextView.GetHighlights()) == 0 {
 			app.SelectedMessage = len(ms) - 1
 		} else {
@@ -159,7 +158,7 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 			Highlight(ms[app.SelectedMessage].ID).
 			ScrollToHighlight()
 		return nil
-	} else if hasKeybinding(config.Keybindings.SelectNextMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.SelectNextMessage, e.Name()) {
 		if len(app.MessagesTextView.GetHighlights()) == 0 {
 			app.SelectedMessage = len(ms) - 1
 		} else {
@@ -173,19 +172,19 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 			Highlight(ms[app.SelectedMessage].ID).
 			ScrollToHighlight()
 		return nil
-	} else if hasKeybinding(config.Keybindings.SelectFirstMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.SelectFirstMessage, e.Name()) {
 		app.SelectedMessage = 0
 		app.MessagesTextView.
 			Highlight(ms[app.SelectedMessage].ID).
 			ScrollToHighlight()
 		return nil
-	} else if hasKeybinding(config.Keybindings.SelectLastMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.SelectLastMessage, e.Name()) {
 		app.SelectedMessage = len(ms) - 1
 		app.MessagesTextView.
 			Highlight(ms[app.SelectedMessage].ID).
 			ScrollToHighlight()
 		return nil
-	} else if hasKeybinding(config.Keybindings.SelectMessageReference, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.SelectMessageReference, e.Name()) {
 		hs := app.MessagesTextView.GetHighlights()
 		if len(hs) == 0 {
 			return nil
@@ -200,7 +199,7 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 		}
 
 		return nil
-	} else if hasKeybinding(config.Keybindings.ReplySelectedMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.ReplySelectedMessage, e.Name()) {
 		hs := app.MessagesTextView.GetHighlights()
 		if len(hs) == 0 {
 			return nil
@@ -210,7 +209,7 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 		app.MessageInputField.SetTitle("Replying to " + m.Author.String())
 		app.SetFocus(app.MessageInputField)
 		return nil
-	} else if hasKeybinding(config.Keybindings.MentionReplySelectedMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.MentionReplySelectedMessage, e.Name()) {
 		hs := app.MessagesTextView.GetHighlights()
 		if len(hs) == 0 {
 			return nil
@@ -220,7 +219,7 @@ func onMessagesTextViewInputCapture(app *App, e *tcell.EventKey) *tcell.EventKey
 		app.MessageInputField.SetTitle("[@] Replying to " + m.Author.String())
 		app.SetFocus(app.MessageInputField)
 		return nil
-	} else if hasKeybinding(config.Keybindings.CopySelectedMessage, e.Name()) {
+	} else if hasKeybinding(app.Config.Keybindings.CopySelectedMessage, e.Name()) {
 		hs := app.MessagesTextView.GetHighlights()
 		if len(hs) == 0 {
 			return nil
diff --git a/ui/views.go b/ui/views.go
index d91d3c9..b921fc0 100644
--- a/ui/views.go
+++ b/ui/views.go
@@ -5,7 +5,7 @@ import (
 	"github.com/rivo/tview"
 )
 
-func DrawMainFlex(app *App) {
+func NewMainFlex(app *App) *tview.Flex {
 	app.SetInputCapture(func(e *tcell.EventKey) *tcell.EventKey {
 		return onAppInputCapture(app, e)
 	})
@@ -63,7 +63,7 @@ func DrawMainFlex(app *App) {
 		AddItem(app.MessagesTextView, 0, 1, false).
 		AddItem(app.MessageInputField, 3, 1, false)
 
-	app.MainFlex.
+	return tview.NewFlex().
 		AddItem(leftFlex, 0, 1, false).
 		AddItem(rightFlex, 0, 4, false)
 }
diff --git a/util/ui.go b/util/ui.go
index 07f1cdd..dc5f7c3 100644
--- a/util/ui.go
+++ b/util/ui.go
@@ -7,7 +7,6 @@ import (
 	"github.com/rivo/tview"
 )
 
-// GetNodeByReference walks the root `*TreeNode` of the given `*TreeView` *treeView* and returns the TreeNode whose reference is equal to the given reference *r*. If the `*TreeNode` is not found, `nil` is returned instead.
 func GetNodeByReference(treeView *tview.TreeView, r interface{}) (mn *tview.TreeNode) {
 	treeView.GetRoot().Walk(func(n, _ *tview.TreeNode) bool {
 		if n.GetReference() == r {
@@ -21,7 +20,6 @@ func GetNodeByReference(treeView *tview.TreeView, r interface{}) (mn *tview.Tree
 	return
 }
 
-// ChannelToString constructs a string representation of the given channel. The string representation may vary for different channel types.
 func ChannelToString(c *discordgo.Channel) string {
 	var repr string
 	if c.Name != "" {
@@ -41,7 +39,6 @@ func ChannelToString(c *discordgo.Channel) string {
 	return repr
 }
 
-// CreateChannelNode builds (encorporates unread channels in bold tag, otherwise dim, etc.) and returns a node according to the type of the given channel *c*.
 func CreateChannelNode(s *discordgo.State, c *discordgo.Channel) *tview.TreeNode {
 	var cn *tview.TreeNode
 	switch c.Type {