Add option to build rosettax87 locally (#9)

Reviewed-on: #9

pkg/ui/popup.go

@@ -1,15 +1,18 @@
 package ui
 
 import (
+	"epochsilicon/pkg/log"
+	"epochsilicon/pkg/patching"
+	"errors"
 	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
 	"fyne.io/fyne/v2/dialog"
 	"fyne.io/fyne/v2/widget"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
 
 	"howett.net/plist"
 
@@ -198,12 +201,84 @@ func showTroubleshootingPopup() {
 		}, currentWindow).Show()
 	})
 
+	// --- Build Rosettax87 Locally ---
+	buildRosettaButton = widget.NewButton("Build", func() {
+		msg := "Building rosettax87 on your computer may speed up launch times. This requires xcode-commandline-tools and Cmake to be installed. See the instructions at https://git.burkey.co/eburk/epochsilicon/README.md\n\n"
+		msg += "Click YES to start the build process. This could take up to a minute depending on the the speed of your Mac. A popup will let you know when the files have been built and copied to the right place."
+		dialog.NewConfirm("Build rosettax87", msg, func(confirm bool) {
+			if confirm {
+				// Check for dependencies
+				if _, err := exec.LookPath("clang"); err != nil {
+					m := fmt.Errorf("xcode command line tools are not installed on your computer. Click the Website button in the app and read the instructions on building rosettax87 before trying again")
+					log.Error(m.Error())
+					dialog.ShowError(m, currentWindow)
+					return
+				}
+				if _, err := exec.LookPath("cmake"); err != nil {
+					m := fmt.Errorf("Cmake is not installed on your computer. Click the Website button in the app and read the instructions on building rosettax87 before trying again")
+					log.Error(m.Error())
+					dialog.ShowError(m, currentWindow)
+					return
+				}
+
+				xPath, lPath, err := patching.BuildRosetta()
+				if err != nil {
+					m := fmt.Errorf("Error building rosettax87: %v\nClick Website for information on getting help", err)
+					log.Error(m.Error())
+					dialog.ShowError(m, currentWindow)
+					return
+				}
+
+				d := filepath.Join(paths.EpochPath, "rosettax87")
+				if err = os.RemoveAll(d); err != nil {
+					m := fmt.Errorf("Error removing existing rosettax87 directory: %v", err)
+					log.Error(m.Error())
+					dialog.ShowError(m, currentWindow)
+					return
+				}
+
+				if err = os.MkdirAll(d, 0755); err != nil {
+					m := fmt.Errorf("Error creating existing rosettax87 directory: %v", err)
+					log.Error(m.Error())
+					dialog.ShowError(m, currentWindow)
+					return
+				}
+
+				pathMap := map[string]string{
+					xPath: filepath.Join(paths.EpochPath, "rosettax87", "rosettax87"),
+					lPath: filepath.Join(paths.EpochPath, "rosettax87", "libRuntimeRosettax87"),
+				}
+
+				for srcPath, destPath := range pathMap {
+					fBytes, err := os.ReadFile(srcPath)
+					if err != nil {
+						errMsg := fmt.Sprintf("failed to read source file %s: %v", srcPath, err)
+						dialog.ShowError(errors.New(errMsg), currentWindow)
+						log.Debug(errMsg)
+						return
+					}
+
+					err = os.WriteFile(destPath, fBytes, 0755)
+					if err != nil {
+						errMsg := fmt.Sprintf("failed to write file %s: %v", destPath, err)
+						dialog.ShowError(errors.New(errMsg), currentWindow)
+						log.Debug(errMsg)
+						return
+					}
+					log.Debugf("Successfully copied %s to %s", srcPath, destPath)
+				}
+				dialog.ShowInformation("Build Successful", "Rosettax87 installed successfully.", currentWindow)
+			}
+		}, currentWindow).Show()
+	})
+
 	troubleshootingTitle := widget.NewLabel("Troubleshooting")
 	troubleshootingTitle.TextStyle = fyne.TextStyle{Bold: true}
 
 	rowCrossover := container.NewBorder(nil, nil, widget.NewLabel("CrossOver version:"), crossoverStatusShort, nil)
 	rowWDB := container.NewBorder(nil, nil, widget.NewLabel("Delete WDB directory (cache):"), wdbDeleteButton, nil)
 	rowWine := container.NewBorder(nil, nil, widget.NewLabel("Delete Wine prefixes (~/.wine & Epoch/.wine):"), wineDeleteButton, nil)
+	rowBuildRosetta := container.NewBorder(nil, nil, widget.NewLabel("Build Rosettax87 locally:"), buildRosettaButton, nil)
 	appMgmtNote := widget.NewLabel("Please ensure EpochSilicon is enabled in System Settings > Privacy & Security > App Management.")
 	appMgmtNote.Wrapping = fyne.TextWrapWord
 	appMgmtNote.TextStyle = fyne.TextStyle{Italic: true}
@@ -215,6 +290,7 @@ func showTroubleshootingPopup() {
 		crossoverStatusDetail,
 		rowWDB,
 		rowWine,
+		rowBuildRosetta,
 		appMgmtNote,
 	)
 
@@ -223,11 +299,11 @@ func showTroubleshootingPopup() {
 	troubleshootingCloseButton = widget.NewButton("Close", func() {})
 
 	popupContent := container.NewBorder(
-		nil, // top
+		nil,                                             // top
 		container.NewCenter(troubleshootingCloseButton), // bottom
-		nil,                                  // left
-		nil,                                  // right
-		container.NewPadded(scrollContainer), // center
+		nil,                                             // left
+		nil,                                             // right
+		container.NewPadded(scrollContainer),            // center
 	)
 
 	windowSize := currentWindow.Content().Size()