chore: refactor internal tool structure

Taskfile.yml

@@ -65,21 +65,21 @@ tasks:
     vars:
       VERSION: "{{.VERSION }}"
     cmds:
-      - cmd: go build -ldflags "-X main.Version={{.VERSION}}" -v -o ./build/arduino-flasher-cli .
+      - cmd: go build -ldflags "-X main.Version={{.VERSION}}" -v -o ./build/arduino-flasher-cli ./cmd/arduino-flasher-cli/
         platforms: [linux, darwin]
-      - cmd: go build -ldflags "-X main.Version={{.VERSION}}" -v -o ./build/arduino-flasher-cli.exe .
+      - cmd: go build -ldflags "-X main.Version={{.VERSION}}" -v -o ./build/arduino-flasher-cli.exe ./cmd/arduino-flasher-cli/
         platforms: [windows]
 
   build:artifacts:
     desc: Prepare the arduino-flasher-cli artifacts
     internal: true
     status:
-      - test -f ./updater/artifacts/resources_darwin_amd64/qdl
-      - test -f ./updater/artifacts/resources_darwin_arm64/qdl
-      - test -f ./updater/artifacts/resources_linux_amd64/qdl
-      - test -f ./updater/artifacts/resources_linux_arm64/qdl
-      - test -f ./updater/artifacts/resources_windows_amd64/qdl.exe
-    cmd: sh ./updater/artifacts/download_resources.sh
+      - test -f ./internal/updater/artifacts/resources_darwin_amd64/qdl
+      - test -f ./internal/updater/artifacts/resources_darwin_arm64/qdl
+      - test -f ./internal/updater/artifacts/resources_linux_amd64/qdl
+      - test -f ./internal/updater/artifacts/resources_linux_arm64/qdl
+      - test -f ./internal/updater/artifacts/resources_windows_amd64/qdl.exe
+    cmd: sh ./internal/updater/artifacts/download_resources.sh
 
   release:
     desc: Create a tag on the current commit and push it to the remote to create the release

download.go → cmd/arduino-flasher-cli/download/download.go

@@ -13,7 +13,7 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package download
 
 import (
 	"context"
@@ -22,12 +22,12 @@ import (
 	"github.com/arduino/go-paths-helper"
 	"github.com/spf13/cobra"
 
-	"github.com/arduino/arduino-flasher-cli/feedback"
-	"github.com/arduino/arduino-flasher-cli/i18n"
-	"github.com/arduino/arduino-flasher-cli/updater"
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
+	"github.com/arduino/arduino-flasher-cli/internal/updater"
 )
 
-func newDownloadCmd() *cobra.Command {
+func NewDownloadCmd() *cobra.Command {
 	var destDir string
 	cmd := &cobra.Command{
 		Use:   "download",
@@ -52,8 +52,7 @@ func runDownloadCommand(ctx context.Context, args []string, destDir string) {
 		feedback.Fatal(i18n.Tr("error: %s is not a directory. Please, select an existing directory.", destDir), feedback.ErrBadArgument)
 	}
 
-	client := updater.NewClient()
-	downloadPath, _, err := updater.DownloadImage(ctx, client, targetVersion, nil, true, downloadPath)
+	downloadPath, _, err := updater.DownloadImage(ctx, targetVersion, downloadPath)
 	if err != nil {
 		feedback.Fatal(i18n.Tr("error downloading the image: %v", err), feedback.ErrBadArgument)
 	}

drivers.go → cmd/arduino-flasher-cli/drivers/drivers.go

@@ -13,16 +13,16 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package drivers
 
 import (
 	"github.com/spf13/cobra"
 
-	"github.com/arduino/arduino-flasher-cli/feedback"
-	"github.com/arduino/arduino-flasher-cli/i18n"
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
 )
 
-func newInstallDriversCmd() *cobra.Command {
+func NewInstallDriversCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:    "install-drivers",
 		Hidden: true,

drivers_others.go → cmd/arduino-flasher-cli/drivers/drivers_others.go

@@ -15,7 +15,7 @@
 
 //go:build !windows
 
-package main
+package drivers
 
 // installDrivers is a no-op on non-Windows platforms
 func installDrivers() error {

drivers_windows.go → cmd/arduino-flasher-cli/drivers/drivers_windows.go

@@ -13,7 +13,7 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package drivers
 
 import (
 	"embed"
@@ -23,7 +23,7 @@ import (
 	"github.com/arduino/go-paths-helper"
 )
 
-//go:embed drivers
+//go:embed src
 var drivers embed.FS
 
 // installDrivers installs the Windows driver using dpinst.exe. This requires

flash.go → cmd/arduino-flasher-cli/flash/flash.go

@@ -13,23 +13,25 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package flash
 
 import (
 	"context"
+	"fmt"
 	"os"
 	"runtime"
+	"strings"
 
 	"github.com/arduino/go-paths-helper"
 	runas "github.com/arduino/go-windows-runas"
 	"github.com/spf13/cobra"
 
-	"github.com/arduino/arduino-flasher-cli/feedback"
-	"github.com/arduino/arduino-flasher-cli/i18n"
-	"github.com/arduino/arduino-flasher-cli/updater"
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
+	"github.com/arduino/arduino-flasher-cli/internal/updater"
 )
 
-func newFlashCmd() *cobra.Command {
+func NewFlashCmd() *cobra.Command {
 	var forceYes bool
 	var tempDir string
 	appCmd := &cobra.Command{
@@ -95,8 +97,25 @@ func runFlashCommand(ctx context.Context, args []string, forceYes bool, tempDir
 		feedback.Fatal(i18n.Tr("could not find image absolute path: %v", err), feedback.ErrBadArgument)
 	}
 
+	if !forceYes {
+		feedback.Print("\nWARNING: flashing a new Linux image on the board will erase any existing data you have on it.")
+		feedback.Printf("Do you want to proceed and flash %s on the board? (yes/no)", args[0])
+
+		var yesInput string
+		_, err := fmt.Scanf("%s\n", &yesInput)
+		if err != nil {
+			feedback.Fatal(err.Error(), feedback.ErrBadArgument)
+		}
+		yes := strings.ToLower(yesInput) == "yes" || strings.ToLower(yesInput) == "y"
+
+		if !yes {
+			return
+		}
+	}
+
 	err = updater.Flash(ctx, imagePath, args[0], forceYes, tempDir)
 	if err != nil {
 		feedback.Fatal(i18n.Tr("error flashing the board: %v", err), feedback.ErrBadArgument)
 	}
+	feedback.Print("\nThe board has been successfully flashed. You can now power-cycle the board (unplug and re-plug). Remember to remove the jumper.")
 }

list.go → cmd/arduino-flasher-cli/list/list.go

@@ -13,21 +13,21 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package list
 
 import (
 	"context"
 
 	"github.com/jedib0t/go-pretty/v6/table"
 	"github.com/spf13/cobra"
 
-	"github.com/arduino/arduino-flasher-cli/feedback"
-	"github.com/arduino/arduino-flasher-cli/i18n"
-	"github.com/arduino/arduino-flasher-cli/tablestyle"
-	"github.com/arduino/arduino-flasher-cli/updater"
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
+	"github.com/arduino/arduino-flasher-cli/internal/tablestyle"
+	"github.com/arduino/arduino-flasher-cli/internal/updater"
 )
 
-func newListCmd() *cobra.Command {
+func NewListCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "list",
 		Short: "List the available Linux images",

main.go → cmd/arduino-flasher-cli/main.go

@@ -17,16 +17,19 @@ package main
 
 import (
 	"context"
-	"fmt"
 	"log/slog"
 	"os"
 
-	"github.com/fatih/color"
 	"github.com/spf13/cobra"
 	"go.bug.st/cleanup"
 
-	"github.com/arduino/arduino-flasher-cli/feedback"
-	"github.com/arduino/arduino-flasher-cli/i18n"
+	"github.com/arduino/arduino-flasher-cli/cmd/arduino-flasher-cli/download"
+	"github.com/arduino/arduino-flasher-cli/cmd/arduino-flasher-cli/drivers"
+	"github.com/arduino/arduino-flasher-cli/cmd/arduino-flasher-cli/flash"
+	"github.com/arduino/arduino-flasher-cli/cmd/arduino-flasher-cli/list"
+	"github.com/arduino/arduino-flasher-cli/cmd/arduino-flasher-cli/version"
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
 )
 
 // Version will be set a build time with -ldflags
@@ -53,51 +56,16 @@ func main() {
 	rootCmd.PersistentFlags().StringVar(&format, "format", "text", "Output format (text, json)")
 
 	rootCmd.AddCommand(
-		newFlashCmd(),
-		newInstallDriversCmd(),
-		newListCmd(),
-		newDownloadCmd(),
-		&cobra.Command{
-			Use:   "version",
-			Short: "Print the version number of Arduino Flasher CLI",
-			Run: func(cmd *cobra.Command, args []string) {
-				feedback.PrintResult(versionResult{
-					Name:    "Arduino Flasher CLI",
-					Version: Version,
-				})
-
-				latest, err := checkForUpdates()
-				if err != nil {
-					feedback.Warning(color.YellowString("\n\nFailed to check for updates: "+err.Error()) + "\n")
-				}
-				if latest != "" {
-					msg := fmt.Sprintf("\n\n%s %s → %s\n%s",
-						color.YellowString(i18n.Tr("A new release of Arduino Flasher CLI is available:")),
-						color.CyanString(Version),
-						color.CyanString(latest),
-						color.YellowString("https://www.arduino.cc/en/software/#flasher-tool"))
-					feedback.Warning(msg)
-				}
-			},
-		})
+		flash.NewFlashCmd(),
+		drivers.NewInstallDriversCmd(),
+		list.NewListCmd(),
+		download.NewDownloadCmd(),
+		version.NewVersionCmd(Version),
+	)
 
 	ctx := context.Background()
 	ctx, _ = cleanup.InterruptableContext(ctx)
 	if err := rootCmd.ExecuteContext(ctx); err != nil {
 		slog.Error(err.Error())
 	}
 }
-
-type versionResult struct {
-	Name    string `json:"name"`
-	Version string `json:"version"`
-}
-
-func (r versionResult) String() string {
-	resultMessage := fmt.Sprintf("Arduino Flasher CLI version %s", r.Version)
-	return resultMessage
-}
-
-func (r versionResult) Data() interface{} {
-	return r
-}

check_for_updates.go → cmd/arduino-flasher-cli/version/check_for_updates.go

@@ -13,7 +13,7 @@
 // Arduino software without disclosing the source code of your own applications.
 // To purchase a commercial license, send an email to license@arduino.cc.
 
-package main
+package version
 
 import (
 	"encoding/json"
@@ -27,8 +27,8 @@ import (
 
 const maxTime time.Duration = 1 * time.Second
 
-func checkForUpdates() (string, error) {
-	currentVersion, err := semver.Parse(Version)
+func checkForUpdates(version string) (string, error) {
+	currentVersion, err := semver.Parse(version)
 	if err != nil {
 		return "", err
 	}

cmd/arduino-flasher-cli/version/version.go

@@ -0,0 +1,67 @@
+// This file is part of arduino-flasher-cli.
+//
+// Copyright 2025 ARDUINO SA (http://www.arduino.cc/)
+//
+// This software is released under the GNU General Public License version 3,
+// which covers the main part of arduino-flasher-cli.
+// The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to
+// modify or otherwise use the software for commercial activities involving the
+// Arduino software without disclosing the source code of your own applications.
+// To purchase a commercial license, send an email to license@arduino.cc.
+
+package version
+
+import (
+	"fmt"
+
+	"github.com/fatih/color"
+	"github.com/spf13/cobra"
+
+	"github.com/arduino/arduino-flasher-cli/cmd/feedback"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
+)
+
+func NewVersionCmd(version string) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "version",
+		Short: "Print the version number of Arduino Flasher CLI",
+		Run: func(cmd *cobra.Command, args []string) {
+			feedback.PrintResult(versionResult{
+				Name:    "Arduino Flasher CLI",
+				Version: version,
+			})
+
+			latest, err := checkForUpdates(version)
+			if err != nil {
+				feedback.Warning(color.YellowString("\n\nFailed to check for updates: "+err.Error()) + "\n")
+			}
+			if latest != "" {
+				msg := fmt.Sprintf("\n\n%s %s → %s\n%s",
+					color.YellowString(i18n.Tr("A new release of Arduino Flasher CLI is available:")),
+					color.CyanString(version),
+					color.CyanString(latest),
+					color.YellowString("https://www.arduino.cc/en/software/#flasher-tool"))
+				feedback.Warning(msg)
+			}
+		},
+	}
+	return cmd
+}
+
+type versionResult struct {
+	Name    string `json:"name"`
+	Version string `json:"version"`
+}
+
+func (r versionResult) String() string {
+	resultMessage := fmt.Sprintf("Arduino Flasher CLI version %s", r.Version)
+	return resultMessage
+}
+
+func (r versionResult) Data() interface{} {
+	return r
+}

feedback/feedback.go → cmd/feedback/feedback.go

@@ -22,7 +22,7 @@ import (
 	"io"
 	"os"
 
-	"github.com/arduino/arduino-flasher-cli/i18n"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
 )
 
 // OutputFormat is an output format

feedback/stdio.go → cmd/feedback/stdio.go

@@ -20,7 +20,7 @@ import (
 	"errors"
 	"io"
 
-	"github.com/arduino/arduino-flasher-cli/i18n"
+	"github.com/arduino/arduino-flasher-cli/cmd/i18n"
 )
 
 // DirectStreams returns the underlying io.Writer to directly stream to