build: display build details link

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

util/desktop/desktop.go

@@ -0,0 +1,86 @@
+package desktop
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sync"
+
+	"github.com/containerd/console"
+)
+
+var (
+	bbEnabledOnce sync.Once
+	bbEnabled     bool
+)
+
+func BuildBackendEnabled() bool {
+	bbEnabledOnce.Do(func() {
+		home, err := os.UserHomeDir()
+		if err != nil {
+			return
+		}
+		_, err = os.Stat(filepath.Join(home, ".docker", "desktop-build", ".lastaccess"))
+		bbEnabled = err == nil
+	})
+	return bbEnabled
+}
+
+func BuildDetailsOutput(refs map[string]string, term bool) string {
+	if len(refs) == 0 {
+		return ""
+	}
+	refURL := func(ref string) string {
+		return fmt.Sprintf("docker-desktop://dashboard/build/%s", ref)
+	}
+	var out bytes.Buffer
+	out.WriteString("View build details: ")
+	multiTargets := len(refs) > 1
+	for target, ref := range refs {
+		if multiTargets {
+			out.WriteString(fmt.Sprintf("\n  %s: ", target))
+		}
+		if term {
+			out.WriteString(hyperlink(refURL(ref)))
+		} else {
+			out.WriteString(refURL(ref))
+		}
+	}
+	return out.String()
+}
+
+func PrintBuildDetails(w io.Writer, refs map[string]string, term bool) {
+	if out := BuildDetailsOutput(refs, term); out != "" {
+		fmt.Fprintf(w, "\n%s\n", out)
+	}
+}
+
+func hyperlink(url string) string {
+	// create an escape sequence using the OSC 8 format: https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
+	return fmt.Sprintf("\033]8;;%s\033\\%s\033]8;;\033\\", url, url)
+}
+
+type ErrorWithBuildRef struct {
+	Ref string
+	Err error
+	Msg string
+}
+
+func (e *ErrorWithBuildRef) Error() string {
+	return e.Err.Error()
+}
+
+func (e *ErrorWithBuildRef) Unwrap() error {
+	return e.Err
+}
+
+func (e *ErrorWithBuildRef) Print(w io.Writer) error {
+	var term bool
+	if _, err := console.ConsoleFromFile(os.Stderr); err == nil {
+		term = true
+	}
+	fmt.Fprintf(w, "\n%s", BuildDetailsOutput(map[string]string{"default": e.Ref}, term))
+	return nil
+}