Refactor UI state management and improve error handling in the application. Added success and error messages to enhance user feedback during package creation and device connection status updates.

tui.go

@@ -1,12 +1,16 @@
 package main
 
 import (
+	"os"
+
 	"github.com/gdamore/tcell/v2"
 	"github.com/rivo/tview"
 )
 
 type UIState struct {
-	Page string
+	Page    string
+	Error   string
+	Success string
 }
 
 func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *tview.Frame {
@@ -18,6 +22,7 @@ func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *
 		app.SetRoot(newFrame, true)
 	})
 	list.AddItem("Upload to Cardputer", "Creates a package and uploads it to the connected Cardputer", 'u', nil)
+	list.AddItem("Live Refresh", "Monitors for changes and automatically uploads to the Cardputer (WIP)", 'l', nil)
 	frame := tview.NewFrame(list)
 	frame.SetBorders(0, 0, 0, 0, 0, 0)
 	frame.AddText("Parchment - v0.0.1", true, tview.AlignLeft, tcell.ColorWhite)
@@ -26,9 +31,36 @@ func AppUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *
 	return frame
 }
 
+func SetError(state *UIState, text string) {
+	state.Success = ""
+	state.Error = text
+}
+
+func SetSuccess(state *UIState, text string) {
+	state.Error = ""
+	state.Success = text
+}
+
 func PackageUI(app *tview.Application, currentFrame **tview.Frame, state *UIState) *tview.Frame {
 	list := tview.NewList()
-	list.AddItem("Create Package", "Creates a .cpkg file in the running directory", 'c', nil)
+	list.AddItem("Create Package", "Creates a .cpkg file in the running directory", 'c', func() {
+		fsys := os.DirFS(".")
+		pkgData, err := loadPackageJSON(fsys)
+		if err != nil {
+			SetError(state, "Failed to load package.json")
+			return
+		}
+		if pkgData == nil {
+			SetError(state, "Failed to load package.json")
+			return
+		}
+		pkg, err := createCpkg(fsys, pkgData)
+		if err != nil {
+			SetError(state, err.Error())
+		} else {
+			SetSuccess(state, "Created file "+pkg.packageName+".cpkg")
+		}
+	})
 	list.AddItem("Unpack Package", "Unpacks a chosen .cpkg file into a subdirectory", 'u', nil)
 	list.AddItem("Back", "Go back to the home page", 'b', func() {
 		newFrame := AppUI(app, currentFrame, state)
@@ -52,6 +84,12 @@ func UpdateDeviceStatus(app *tview.Application, frame *tview.Frame, state *UISta
 		case "package":
 			frame.AddText("Package Tools", true, tview.AlignLeft, tcell.ColorWhite)
 		}
+		if state.Error != "" {
+			frame.AddText(state.Error, false, tview.AlignRight, tcell.ColorRed)
+		}
+		if state.Success != "" {
+			frame.AddText(state.Success, false, tview.AlignRight, tcell.ColorGreen)
+		}
 		frame.AddText(status, false, tview.AlignLeft, color)
 	})
 }