Add persistence for last used JID

2 files changed, 63 insertions, 2 deletions

diff --git a/limox.go b/limox.go
index 672396e..0e8c056 100644
--- a/limox.go
+++ b/limox.go
@@ -34,7 +34,7 @@ type Limox struct {
 }
 
 func NewLimox() Limox {
-	return Limox{
+	l := Limox{
 		Window: app.NewWindow(
 			app.Title("LimoX"),
 			app.Size(unit.Dp(400), unit.Dp(600)),
@@ -44,6 +44,10 @@ func NewLimox() Limox {
 		XmppConn:   make(chan xmpp.Event),
 		State:      Disconnected,
 	}
+
+	l.JidEditor.SetText(getLastJid())
+
+	return l
 }
 
 func (l *Limox) run() error {
@@ -77,7 +81,9 @@ func (l *Limox) buttonCallback() {
 	switch l.State {
 	case Disconnected:
 		log.Println("Starting connection establishment ...")
-		go xmpp.Run(l.XmppConn, l.JidEditor.Text(), l.PwdEditor.Text())
+		jid := l.JidEditor.Text()
+		setLastJid(jid)
+		go xmpp.Run(l.XmppConn, jid, l.PwdEditor.Text())
 		l.State = Connecting
 	case Connecting:
 		log.Println("Aborted connection establishment")
diff --git a/persistence.go b/persistence.go
new file mode 100644
index 0000000..5199fc5
--- /dev/null
+++ b/persistence.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+const (
+	RelDataPath = `/.config/limox`
+	RelJidPath  = `/last_jid.txt`
+)
+
+func setLastJid(j string) {
+	data, err := assertDatadir()
+	if err != nil {
+		return
+	}
+
+	path := filepath.Join(data, RelJidPath)
+
+	_ = ioutil.WriteFile(path, []byte(j), 0644)
+}
+
+func getLastJid() string {
+	data, err := assertDatadir()
+	if err != nil {
+		return ""
+	}
+
+	path := filepath.Join(data, RelJidPath)
+
+	content, err := ioutil.ReadFile(path)
+	if err != nil {
+		return ""
+	}
+
+	return string(content)
+}
+
+func assertDatadir() (string, error) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+
+	path := filepath.Join(home, RelDataPath)
+
+	err = os.MkdirAll(path, 0755)
+	if err != nil {
+		return "", err
+	}
+
+	return path, nil
+}