From 5bc63b7864da9c7161204ccdaad56dc7322fdadd Mon Sep 17 00:00:00 2001
From: Elara Musayelyan <elara@elara.ws>
Date: Fri, 27 Aug 2021 08:47:24 -0700
Subject: [PATCH] Add fatal error dialog

---
 cmd/itgui/error.go   | 21 ++++++++++++++++++---
 cmd/itgui/info.go    |  4 ++--
 cmd/itgui/main.go    |  7 +++++++
 cmd/itgui/notify.go  |  2 +-
 cmd/itgui/time.go    |  2 +-
 cmd/itgui/upgrade.go | 10 +++++-----
 6 files changed, 34 insertions(+), 12 deletions(-)

diff --git a/cmd/itgui/error.go b/cmd/itgui/error.go
index ae47989..8cdd4db 100644
--- a/cmd/itgui/error.go
+++ b/cmd/itgui/error.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"image/color"
+	"os"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/canvas"
@@ -10,7 +11,7 @@ import (
 	"fyne.io/fyne/v2/widget"
 )
 
-func guiErr(err error, msg string, parent fyne.Window) {
+func guiErr(err error, msg string, fatal bool, parent fyne.Window) {
 	// Create new label containing message
 	msgLbl := widget.NewLabel(msg)
 	// Text formatting settings
@@ -33,6 +34,20 @@ func guiErr(err error, msg string, parent fyne.Window) {
 			widget.NewAccordionItem("More Details", errLbl),
 		))
 	}
-	// Show error dialog
-	dialog.NewCustom("Error", "Ok", content, parent).Show()
+	if fatal {
+		// Create new error dialog
+		errDlg := dialog.NewCustom("Error", "Close", content, parent)
+		// On close, exit with code 1
+		errDlg.SetOnClosed(func() {
+			os.Exit(1)
+		})
+		// Show dialog
+		errDlg.Show()
+		// Run app prematurely to stop further execution
+		parent.ShowAndRun()
+	} else {
+		// Show error dialog
+		dialog.NewCustom("Error", "Ok", content, parent).Show()
+	}
+
 }
diff --git a/cmd/itgui/info.go b/cmd/itgui/info.go
index aec6ae3..cb082aa 100644
--- a/cmd/itgui/info.go
+++ b/cmd/itgui/info.go
@@ -58,7 +58,7 @@ func infoTab(parent fyne.Window) *fyne.Container {
 
 	fwVerString, err := get(types.ReqTypeFwVersion)
 	if err != nil {
-		panic(err)
+		guiErr(err, "Error getting firmware string", true, parent)
 	}
 
 	fwVer := container.NewVBox(
@@ -99,7 +99,7 @@ func watch(req int, onRecv func(data interface{}), parent fyne.Window) error {
 	for scanner.Scan() {
 		res, err := getResp(scanner.Bytes())
 		if err != nil {
-			guiErr(err, "Error getting response from connection", parent)
+			guiErr(err, "Error getting response from connection", false, parent)
 			continue
 		}
 		onRecv(res.Value)
diff --git a/cmd/itgui/main.go b/cmd/itgui/main.go
index 344d0e0..0bdf961 100644
--- a/cmd/itgui/main.go
+++ b/cmd/itgui/main.go
@@ -1,6 +1,8 @@
 package main
 
 import (
+	"net"
+
 	"fyne.io/fyne/v2/app"
 	"fyne.io/fyne/v2/container"
 )
@@ -13,6 +15,11 @@ func main() {
 	// Create new window with title "itgui"
 	window := a.NewWindow("itgui")
 
+	_, err := net.Dial("unix", SockPath)
+	if err != nil {
+		guiErr(err, "Error dialing itd socket", true, window)
+	}
+
 	// Create new app tabs container
 	tabs := container.NewAppTabs(
 		container.NewTabItem("Info", infoTab(window)),
diff --git a/cmd/itgui/notify.go b/cmd/itgui/notify.go
index 009160e..51f63d6 100644
--- a/cmd/itgui/notify.go
+++ b/cmd/itgui/notify.go
@@ -25,7 +25,7 @@ func notifyTab(parent fyne.Window) *fyne.Container {
 		// Dial itd UNIX socket
 		conn, err := net.Dial("unix", SockPath)
 		if err != nil {
-			guiErr(err, "Error dialing socket", parent)
+			guiErr(err, "Error dialing socket", false, parent)
 			return
 		}
 		// Encode notify request on connection
diff --git a/cmd/itgui/time.go b/cmd/itgui/time.go
index d857e4f..0fe3ac7 100644
--- a/cmd/itgui/time.go
+++ b/cmd/itgui/time.go
@@ -29,7 +29,7 @@ func timeTab(parent fyne.Window) *fyne.Container {
 		// Parse time as RFC1123 string
 		parsedTime, err := time.Parse(time.RFC1123, timeEntry.Text)
 		if err != nil {
-			guiErr(err, "Error parsing time string", parent)
+			guiErr(err, "Error parsing time string", false, parent)
 			return
 		}
 		// Set time to parsed time
diff --git a/cmd/itgui/upgrade.go b/cmd/itgui/upgrade.go
index 80ca90d..24e7e61 100644
--- a/cmd/itgui/upgrade.go
+++ b/cmd/itgui/upgrade.go
@@ -92,7 +92,7 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 		// If archive path does not exist and both init packet and firmware paths
 		// also do not exist, return error
 		if archivePath == "" && (initPktPath == "" && fiwmarePath == "") {
-			guiErr(nil, "Upgrade requires archive or files selected", parent)
+			guiErr(nil, "Upgrade requires archive or files selected", false, parent)
 			return
 		}
 
@@ -125,7 +125,7 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 		// Dial itd UNIX socket
 		conn, err := net.Dial("unix", SockPath)
 		if err != nil {
-			guiErr(err, "Error dialing socket", parent)
+			guiErr(err, "Error dialing socket", false, parent)
 			return
 		}
 		defer conn.Close()
@@ -150,18 +150,18 @@ func upgradeTab(parent fyne.Window) *fyne.Container {
 			// Decode scanned line into response struct
 			err = json.Unmarshal(scanner.Bytes(), &res)
 			if err != nil {
-				guiErr(err, "Error decoding response", parent)
+				guiErr(err, "Error decoding response", false, parent)
 				return
 			}
 			if res.Error {
-				guiErr(err, "Error returned in response", parent)
+				guiErr(err, "Error returned in response", false, parent)
 				return
 			}
 			var event types.DFUProgress
 			// Decode response data into progress struct
 			err = mapstructure.Decode(res.Value, &event)
 			if err != nil {
-				guiErr(err, "Error decoding response value", parent)
+				guiErr(err, "Error decoding response value", false, parent)
 				return
 			}
 			// If transfer finished, break