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// Copyright (c) 2021 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package whatsmeow
import (
"fmt"
"sync/atomic"
"time"
waBinary "go.mau.fi/whatsmeow/binary"
"go.mau.fi/whatsmeow/types"
"go.mau.fi/whatsmeow/types/events"
)
func (cli *Client) handleReceipt(node *waBinary.Node) {
receipt, err := cli.parseReceipt(node)
if err != nil {
cli.Log.Warnf("Failed to parse receipt: %v", err)
} else {
if receipt.Type == events.ReceiptTypeRetry {
go func() {
err := cli.handleRetryReceipt(receipt, node)
if err != nil {
cli.Log.Errorf("Failed to handle retry receipt for %s/%s from %s: %v", receipt.Chat, receipt.MessageIDs[0], receipt.Sender, err)
}
}()
}
go cli.dispatchEvent(receipt)
}
go cli.sendAck(node)
}
func (cli *Client) parseReceipt(node *waBinary.Node) (*events.Receipt, error) {
ag := node.AttrGetter()
source, err := cli.parseMessageSource(node)
if err != nil {
return nil, err
}
receipt := events.Receipt{
MessageSource: source,
Timestamp: time.Unix(ag.Int64("t"), 0),
Type: events.ReceiptType(ag.OptionalString("type")),
}
mainMessageID := ag.String("id")
if !ag.OK() {
return nil, fmt.Errorf("failed to parse read receipt attrs: %+v", ag.Errors)
}
receiptChildren := node.GetChildren()
if len(receiptChildren) == 1 && receiptChildren[0].Tag == "list" {
listChildren := receiptChildren[0].GetChildren()
receipt.MessageIDs = make([]string, 1, len(listChildren)+1)
receipt.MessageIDs[0] = mainMessageID
for _, item := range listChildren {
if id, ok := item.Attrs["id"].(string); ok && item.Tag == "item" {
receipt.MessageIDs = append(receipt.MessageIDs, id)
}
}
} else {
receipt.MessageIDs = []types.MessageID{mainMessageID}
}
return &receipt, nil
}
func (cli *Client) sendAck(node *waBinary.Node) {
attrs := waBinary.Attrs{
"class": node.Tag,
"id": node.Attrs["id"],
}
attrs["to"] = node.Attrs["from"]
if participant, ok := node.Attrs["participant"]; ok {
attrs["participant"] = participant
}
if recipient, ok := node.Attrs["recipient"]; ok {
attrs["recipient"] = recipient
}
if receiptType, ok := node.Attrs["type"]; node.Tag != "message" && ok {
attrs["type"] = receiptType
}
err := cli.sendNode(waBinary.Node{
Tag: "ack",
Attrs: attrs,
})
if err != nil {
cli.Log.Warnf("Failed to send acknowledgement for %s %s: %v", node.Tag, node.Attrs["id"], err)
}
}
// MarkRead sends a read receipt for the given message IDs including the given timestamp as the read at time.
//
// The first JID parameter (chat) must always be set to the chat ID (user ID in DMs and group ID in group chats).
// The second JID parameter (sender) must be set in group chats and must be the user ID who sent the message.
func (cli *Client) MarkRead(ids []types.MessageID, timestamp time.Time, chat, sender types.JID) error {
node := waBinary.Node{
Tag: "receipt",
Attrs: waBinary.Attrs{
"id": ids[0],
"type": "read",
"to": chat,
"t": timestamp.Unix(),
},
}
if cli.GetPrivacySettings().ReadReceipts == types.PrivacySettingNone {
node.Attrs["type"] = "read-self"
}
if !sender.IsEmpty() && chat.Server != types.DefaultUserServer {
node.Attrs["participant"] = sender.ToNonAD()
}
if len(ids) > 1 {
children := make([]waBinary.Node, len(ids)-1)
for i := 1; i < len(ids); i++ {
children[i-1].Tag = "item"
children[i-1].Attrs = waBinary.Attrs{"id": ids[i]}
}
node.Content = []waBinary.Node{{
Tag: "list",
Content: children,
}}
}
return cli.sendNode(node)
}
// SetForceActiveDeliveryReceipts will force the client to send normal delivery
// receipts (which will show up as the two gray ticks on WhatsApp), even if the
// client isn't marked as online.
//
// By default, clients that haven't been marked as online will send delivery
// receipts with type="inactive", which is transmitted to the sender, but not
// rendered in the official WhatsApp apps. This is consistent with how WhatsApp
// web works when it's not in the foreground.
//
// To mark the client as online, use
// cli.SendPresence(types.PresenceAvailable)
//
// Note that if you turn this off (i.e. call SetForceActiveDeliveryReceipts(false)),
// receipts will act like the client is offline until SendPresence is called again.
func (cli *Client) SetForceActiveDeliveryReceipts(active bool) {
if active {
atomic.StoreUint32(&cli.sendActiveReceipts, 2)
} else {
atomic.StoreUint32(&cli.sendActiveReceipts, 0)
}
}
func (cli *Client) sendMessageReceipt(info *types.MessageInfo) {
attrs := waBinary.Attrs{
"id": info.ID,
}
if info.IsFromMe {
attrs["type"] = "sender"
} else if atomic.LoadUint32(&cli.sendActiveReceipts) == 0 {
attrs["type"] = "inactive"
}
attrs["to"] = info.Chat
if info.IsGroup {
attrs["participant"] = info.Sender
} else if info.IsFromMe {
attrs["recipient"] = info.Sender
} else {
// Override the to attribute with the JID version with a device number
attrs["to"] = info.Sender
}
err := cli.sendNode(waBinary.Node{
Tag: "receipt",
Attrs: attrs,
})
if err != nil {
cli.Log.Warnf("Failed to send receipt for %s: %v", info.ID, err)
}
}
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