Add dependencies/vendor (whatsapp)

vendor/go.mau.fi/whatsmeow/presence.go

@@ -0,0 +1,101 @@
+// 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 (
+	"time"
+
+	waBinary "go.mau.fi/whatsmeow/binary"
+	"go.mau.fi/whatsmeow/types"
+	"go.mau.fi/whatsmeow/types/events"
+)
+
+func (cli *Client) handleChatState(node *waBinary.Node) {
+	source, err := cli.parseMessageSource(node)
+	if err != nil {
+		cli.Log.Warnf("Failed to parse chat state update: %v", err)
+	} else if len(node.GetChildren()) != 1 {
+		cli.Log.Warnf("Failed to parse chat state update: unexpected number of children in element (%d)", len(node.GetChildren()))
+	} else {
+		child := node.GetChildren()[0]
+		presence := types.ChatPresence(child.Tag)
+		if presence != types.ChatPresenceComposing && presence != types.ChatPresenceRecording && presence != types.ChatPresencePaused {
+			cli.Log.Warnf("Unrecognized chat presence state %s", child.Tag)
+		}
+		cli.dispatchEvent(&events.ChatPresence{
+			MessageSource: source,
+			State:         presence,
+		})
+	}
+}
+
+func (cli *Client) handlePresence(node *waBinary.Node) {
+	var evt events.Presence
+	ag := node.AttrGetter()
+	evt.From = ag.JID("from")
+	presenceType := ag.OptionalString("type")
+	if presenceType == "unavailable" {
+		evt.Unavailable = true
+	} else if presenceType != "" {
+		cli.Log.Debugf("Unrecognized presence type '%s' in presence event from %s", presenceType, evt.From)
+	}
+	lastSeen := ag.OptionalString("last")
+	if lastSeen != "" && lastSeen != "deny" {
+		evt.LastSeen = time.Unix(ag.Int64("last"), 0)
+	}
+	if !ag.OK() {
+		cli.Log.Warnf("Error parsing presence event: %+v", ag.Errors)
+	} else {
+		cli.dispatchEvent(&evt)
+	}
+}
+
+// SendPresence updates the user's presence status on WhatsApp.
+//
+// You should call this at least once after connecting so that the server has your pushname.
+// Otherwise, other users will see "-" as the name.
+func (cli *Client) SendPresence(state types.Presence) error {
+	if len(cli.Store.PushName) == 0 {
+		return ErrNoPushName
+	}
+	return cli.sendNode(waBinary.Node{
+		Tag: "presence",
+		Attrs: waBinary.Attrs{
+			"name": cli.Store.PushName,
+			"type": string(state),
+		},
+	})
+}
+
+// SubscribePresence asks the WhatsApp servers to send presence updates of a specific user to this client.
+//
+// After subscribing to this event, you should start receiving *events.Presence for that user in normal event handlers.
+//
+// Also, it seems that the WhatsApp servers require you to be online to receive presence status from other users,
+// so you should mark yourself as online before trying to use this function:
+//     cli.SendPresence(types.PresenceAvailable)
+func (cli *Client) SubscribePresence(jid types.JID) error {
+	return cli.sendNode(waBinary.Node{
+		Tag: "presence",
+		Attrs: waBinary.Attrs{
+			"type": "subscribe",
+			"to":   jid,
+		},
+	})
+}
+
+// SendChatPresence updates the user's typing status in a specific chat.
+func (cli *Client) SendChatPresence(state types.ChatPresence, jid types.JID) error {
+	return cli.sendNode(waBinary.Node{
+		Tag: "chatstate",
+		Attrs: waBinary.Attrs{
+			"from": *cli.Store.ID,
+			"to":   jid,
+		},
+		Content: []waBinary.Node{{Tag: string(state)}},
+	})
+}