checkpoint: can now open images from an image viewer

cmd/enbas/main.go

@@ -32,6 +32,7 @@ func run() error {
 		configDir        string
 		cacheDir         string
 		pager            string
+		imageViewer      string
 		maxTerminalWidth int
 		noColor          *bool
 	)
@@ -39,6 +40,7 @@ func run() error {
 	flag.StringVar(&configDir, "config-dir", "", "Specify your config directory")
 	flag.StringVar(&cacheDir, "cache-dir", "", "Specify your cache directory")
 	flag.StringVar(&pager, "pager", "", "Specify your preferred pager to page through long outputs. This is disabled by default.")
+	flag.StringVar(&imageViewer, "image-viewer", "", "Specify your preferred image viewer for viewing images attached to statuses.")
 	flag.IntVar(&maxTerminalWidth, "max-terminal-width", 80, "Specify the maximum terminal width when displaying resources on screen.")
 
 	flag.BoolFunc("no-color", "Disable ANSI colour output when displaying text on screen", func(value string) error {
@@ -173,6 +175,7 @@ func run() error {
 			printer,
 			configDir,
 			cacheDir,
+			imageViewer,
 			executor.CommandShow,
 			executor.CommandSummaryLookup(executor.CommandShow),
 		),

internal/executor/show.go

@@ -36,16 +36,18 @@ type ShowExecutor struct {
 	pollID                  string
 	attachmentID            string
 	fromResourceType        string
+	imageViewer             string
 	limit                   int
 }
 
-func NewShowExecutor(printer *printer.Printer, configDir, cacheRoot, name, summary string) *ShowExecutor {
+func NewShowExecutor(printer *printer.Printer, configDir, cacheRoot, imageViewer, name, summary string) *ShowExecutor {
 	showExe := ShowExecutor{
 		FlagSet: flag.NewFlagSet(name, flag.ExitOnError),
 
 		printer:     printer,
 		configDir:   configDir,
 		cacheRoot:   cacheRoot,
+		imageViewer: imageViewer,
 	}
 
 	showExe.BoolVar(&showExe.myAccount, flagMyAccount, false, "Set to true to lookup your account")
@@ -455,6 +457,7 @@ func (s *ShowExecutor) showMediaFromStatus(gtsClient *client.Client) error {
 		return FlagNotSetError{flagText: flagStatusID}
 	}
 
+
 	status, err := gtsClient.GetStatus(s.statusID)
 	if err != nil {
 		return fmt.Errorf("unable to retrieve the status: %w", err)
@@ -501,8 +504,9 @@ func (s *ShowExecutor) showMediaFromStatus(gtsClient *client.Client) error {
 		}
 	}
 
-	// TODO: display the file in the image viewer.
-	fmt.Println("checkpoint: the media file is now on disk; just need to open it in an image viewer...")
+	if err := utilities.OpenMedia(s.imageViewer, mediaFilePath); err != nil {
+		return fmt.Errorf("unable to open the image viewer: %w", err)
+	}
 
 	return nil
 }

internal/utilities/utilities.go

@@ -1,6 +1,13 @@
+// SPDX-FileCopyrightText: 2024 Dan Anglin <d.n.i.anglin@gmail.com>
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 package utilities
 
 import (
+	"errors"
+	"fmt"
+	"os/exec"
 	"regexp"
 )
 
@@ -9,3 +16,17 @@ func GetFQDN(url string) string {
 
 	return r.ReplaceAllString(url, "")
 }
+
+func OpenMedia(viewer, path string) error {
+	if viewer == "" {
+		return errors.New("the image viewer is not specified")
+	}
+
+	command := exec.Command(viewer, path)
+
+	if err := command.Start(); err != nil {
+		return fmt.Errorf("received an error after starting the image viewer: %w", err)
+	}
+
+	return nil
+}