add auto open auth link (#187)

* add utility in system package to use command for triggering web

* improve phrasing of auth dialog

---------

Co-authored-by: Scott Cotton <scott@mindowl.com>

Author: davixcky

internal/command/auth/login.go

@@ -10,6 +10,7 @@ import (
 	"github.com/signadot/cli/internal/auth"
 	"github.com/signadot/cli/internal/config"
 	"github.com/signadot/cli/internal/spinner"
+	"github.com/signadot/cli/internal/utils/system"
 	sdkauth "github.com/signadot/go-sdk/client/auth"
 	"github.com/signadot/go-sdk/client/orgs"
 	"github.com/signadot/go-sdk/models"
@@ -127,8 +128,13 @@ func getDeviceCode(cfg *config.AuthLogin) (*models.AuthdevicesCode, error) {
 
 func waitForUserAuth(cfg *config.AuthLogin, out io.Writer,
 	code *models.AuthdevicesCode) (*models.AuthdevicesToken, error) {
-	fmt.Fprintf(out, "To authenticate, visit: "+code.VerificationURI+"\n")
-	fmt.Fprintf(out, "and confirm the code: "+code.UserCode+"\n\n")
+	if err := system.OpenBrowser(code.VerificationURI); err != nil {
+		// If browser opening fails, fall back to just showing the URL
+		fmt.Fprintf(out, "Please visit: %s\n", code.VerificationURI)
+	} else {
+		fmt.Fprintf(out, "Opening browser at: %s\n", code.VerificationURI)
+	}
+	fmt.Fprintf(out, "to authenticate using the code: %s\n\n", code.UserCode)
 	spin := spinner.Start(out, "Waiting for authentication")
 	defer spin.Stop()
 

internal/utils/system/system.go

@@ -4,8 +4,10 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"os/exec"
 	"path"
 	"path/filepath"
+	"runtime"
 
 	"github.com/panta/machineid"
 	"gopkg.in/natefinch/lumberjack.v2"
@@ -63,6 +65,20 @@ func GetMachineID() (string, error) {
 	return machineID[:63], nil
 }
 
+// OpenBrowser opens the specified URL in the user's default browser
+func OpenBrowser(url string) error {
+	var cmd *exec.Cmd
+	switch runtime.GOOS {
+	case "darwin":
+		cmd = exec.Command("open", url)
+	case "windows":
+		cmd = exec.Command("cmd", "/c", "start", url)
+	default: // "linux", "freebsd", "openbsd", "netbsd"
+		cmd = exec.Command("xdg-open", url)
+	}
+	return cmd.Start()
+}
+
 func GetSandboxesDir() (string, error) {
 	sdDir, err := GetSignadotDir()
 	if err != nil {