How can I save attachments

[hajsf]

How can I save incoming message if it is image/document/audio/video?

[hajsf]

Here is the code to save image/audio/video/documents received at WhatsApp:

		case evt.Message.ImageMessage != nil:
			img := evt.Message.GetImageMessage()
			if img != nil {
				data, err := global.Cli.Download(img)
				if err != nil {
					log.Printf("Failed to download image: %v", err)
					return
				}
				exts, _ := mime.ExtensionsByType(img.GetMimetype())
				path := fmt.Sprintf("./Downloads/Image/%s-%s%s", sender, evt.Info.ID, exts[0])
				err = os.WriteFile(path, data, 0600)
				if err != nil {
					log.Printf("Failed to save image: %v", err)
					return
				}
				log.Printf("Saved image in message to %s", path)
			}

		case evt.Message.AudioMessage != nil:
			audio := evt.Message.GetAudioMessage()
			if audio != nil {
				data, err := global.Cli.Download(audio)
				if err != nil {
					log.Printf("Failed to download audio: %v", err)
					return
				}
				exts, _ := mime.ExtensionsByType(audio.GetMimetype())
				path := fmt.Sprintf("./Downloads/Audio/%s-%s%s", sender, evt.Info.ID, exts[0])
				err = os.WriteFile(path, data, 0600)
				if err != nil {
					log.Printf("Failed to save audio: %v", err)
					return
				}
				log.Printf("Saved audio in message to %s", path)
			}

		case evt.Message.VideoMessage != nil:
			video := evt.Message.GetVideoMessage()
			if video != nil {
				data, err := global.Cli.Download(video)
				if err != nil {
					log.Printf("Failed to download video: %v", err)
					return
				}
				exts, _ := mime.ExtensionsByType(video.GetMimetype())
				path := fmt.Sprintf("./Downloads/Video/%s-%s%s", sender, evt.Info.ID, exts[0])
				err = os.WriteFile(path, data, 0600)
				if err != nil {
					log.Printf("Failed to save video: %v", err)
					return
				}
				log.Printf("Saved video in message to %s", path)
			}

		case evt.Message.DocumentMessage != nil:
			document := evt.Message.GetDocumentMessage()
			if document != nil {
				data, err := global.Cli.Download(document)
				if err != nil {
					log.Printf("Failed to download audio: %v", err)
					return
				}
				exts, _ := mime.ExtensionsByType(document.GetMimetype())
				path := fmt.Sprintf("./Downloads/Documents/%s-%s%s", sender, evt.Info.ID, exts[0])
				err = os.WriteFile(path, data, 0600)
				if err != nil {
					log.Printf("Failed to save document: %v", err)
					return
				}
				log.Printf("Saved document in message to %s", path)
			}

[MeinDeutschkurs]

Sorry for the newbie question, but I cannot figure out what global.Cli in global.Cli.Download(audio) referees to. Can you please tell me, what global and or global.Cli is connected to?

Currently I try to figure out, how to download and save WhatsApp-Messages to disc. And I think the key to it is hidden in the above snippet.

Thx,
Johannes

[mamur-rezeki]

The context of global.Cli is :

• global maybe is a struct or interface{}
• Cli is a *whatsmeow.Client for Whatsapp client.

whatsmeow/mdtest/main.go

Lines 793 to 808 in 0e67dea

	img := evt.Message.GetImageMessage()
	if img != nil {
	data, err := cli.Download(img)
	if err != nil {
	log.Errorf("Failed to download image: %v", err)
	return
	}
	exts, _ := mime.ExtensionsByType(img.GetMimetype())
	path := fmt.Sprintf("%s%s", evt.Info.ID, exts[0])
	err = os.WriteFile(path, data, 0600)
	if err != nil {
	log.Errorf("Failed to save image: %v", err)
	return
	}
	log.Infof("Saved image in message to %s", path)
	}

[MeinDeutschkurs]

Thank you so much for the hint, I think I'm able to see better. Thx for the glasses! Now I can also see the source path of the file.

[MeinDeutschkurs]

@mamur-rezeki, thx again! GOT it!

[MeinDeutschkurs]

Is it possible to get the caption (text that is displayed under the image in WhatsApp) that the user typed before upload? Maybe somewhere in here?
evt.Message.GetImageMessage()?

I looked in
newMessage = v.Message
and
quoted := newMessage.ExtendedTextMessage
but no luck.

[MeinDeutschkurs]

I think I found it: img.GetCaption()

[mamur-rezeki]

Here's some examples to extract text from the message.

https://github.com/mamur-rezeki/gowhatsplugins/blob/191077b8af85a7ecdfc5537bde5b64fc05701bd9/whats/whats.go#L29-L99

[MeinDeutschkurs]

Wow! Thank you so much for sharing whats.go! Next weekend I know exactly what I will analyze!! 🤗