Text message sometimes empty string

[ekasetiawans]

I’m facing issue that sometimes received message receiving a empty string. It’s only occured on some whatsapp account. Is there any explanation why this happen?

[SoursopID]

It's kinda hard to figure it out since you didn't provide more information about your case.

[ekasetiawans]

I just using simpel example whatsmeow in godoc, the conversation message has empty string

[SoursopID]

IINW, there's 2 type of text message in WhatsApp proto,
Conversation & ExtendedTextMessage

Conversation commonly used in regular chat message that doesn't use Disappearing timer and
then ExtendedTextMessage is a rich text message that can containText, Link preview, Ads, and other properties like quoting, forwarding, Expiration (for disappearing timer) .

reff :
https://pkg.go.dev/go.mau.fi/whatsmeow@v0.0.0-20240507080416-01b0547014dc/binary/proto#Message

[ekasetiawans]

So we need to check which the correct message type right?

[lucasvmx]

So we need to check which the correct message type right?

Right.

You can use this function to check:

func hasTextMessage(msg *proto.Message) bool {
	extendedMsg := msg.GetExtendedTextMessage()

	return len(msg.GetConversation()) > 0 ||
		len(extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()) > 0 ||
		len(extendedMsg.GetText()) > 0
}

[h4775346]

So we need to check which the correct message type right?

Right.

You can use this function to check:

func hasTextMessage(msg *proto.Message) bool {
	extendedMsg := msg.GetExtendedTextMessage()

	return len(msg.GetConversation()) > 0 ||
		len(extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()) > 0 ||
		len(extendedMsg.GetText()) > 0
}

Your Answer Worked For me after changing some code could be perfect

func GetMessageFromEvt(msg *waProto.Message) string {
	extendedMsg := msg.GetExtendedTextMessage()

	if len(msg.GetConversation()) > 0 {
		return msg.GetConversation()
	}
	if len(extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()) > 0 {
		return extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()
	}

	if len(extendedMsg.GetText()) > 0 {
		return extendedMsg.GetText()
	}
	return ""
}

[stevegore]

So we need to check which the correct message type right?

Right.
You can use this function to check:

func hasTextMessage(msg *proto.Message) bool {
	extendedMsg := msg.GetExtendedTextMessage()

	return len(msg.GetConversation()) > 0 ||
		len(extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()) > 0 ||
		len(extendedMsg.GetText()) > 0
}

Your Answer Worked For me after changing some code could be perfect

func GetMessageFromEvt(msg *waProto.Message) string {
	extendedMsg := msg.GetExtendedTextMessage()

	if len(msg.GetConversation()) > 0 {
		return msg.GetConversation()
	}
	if len(extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()) > 0 {
		return extendedMsg.GetContextInfo().GetQuotedMessage().GetConversation()
	}

	if len(extendedMsg.GetText()) > 0 {
		return extendedMsg.GetText()
	}
	return ""
}

Chances are you want the reply instead of the quoted message. Proposed alternative:

func messageContent(msg *waE2E.Message) string {
	if msg == nil {
		return ""
	}

	if conversation := msg.GetConversation(); len(conversation) > 0 {
		return conversation
	}

	if extendedMsg := msg.GetExtendedTextMessage().GetText(); len(extendedMsg) > 0 {
		return extendedMsg
	}

	if editedContent := messageContent(msg.GetProtocolMessage().GetEditedMessage()); len(editedContent) > 0 {
		return editedContent
	}

	return ""
}