feat: initial whatsmeow bot with command handler and context helpers

Core framework (Handler, Command, Default muxer) in core/ package. Command self-registration via init() with blank imports in cmds/. Context helpers (send, reply, download, upload) in context/ package. Permission system with GROUP_ONLY / PRIVATE_ONLY checks. WhatsApp client configured as Safari with history sync disabled.
2026-07-06 18:53:04 +07:00
commit faeda0b21d
14 changed files with 1054 additions and 0 deletions
@@ -0,0 +1,106 @@
+package context
+
+import (
+	stdctx "context"
+
+	waCommon "go.mau.fi/whatsmeow/proto/waCommon"
+	waE2E "go.mau.fi/whatsmeow/proto/waE2E"
+	waTypes "go.mau.fi/whatsmeow/types"
+	"google.golang.org/protobuf/proto"
+)
+
+func (c *Ctx) Reply(text string) {
+	msg := &waE2E.Message{
+		ExtendedTextMessage: &waE2E.ExtendedTextMessage{
+			Text: proto.String(text),
+			ContextInfo: &waE2E.ContextInfo{
+				StanzaID:      &c.event.Info.ID,
+				Participant:   proto.String(c.event.Info.Sender.String()),
+				QuotedMessage: c.event.Message,
+			},
+		},
+	}
+	c.client.SendMessage(stdctx.Background(), c.event.Info.Chat, msg)
+}
+
+func (c *Ctx) Send(text string) {
+	msg := &waE2E.Message{
+		ExtendedTextMessage: &waE2E.ExtendedTextMessage{
+			Text: proto.String(text),
+		},
+	}
+	c.client.SendMessage(stdctx.Background(), c.event.Info.Chat, msg)
+}
+
+func (c *Ctx) SendMessage(msg *waE2E.Message) {
+	c.client.SendMessage(stdctx.Background(), c.event.Info.Chat, msg)
+}
+
+func (c *Ctx) React(emoji string) {
+	msg := &waE2E.Message{
+		ReactionMessage: &waE2E.ReactionMessage{
+			Key: &waCommon.MessageKey{
+				RemoteJID: proto.String(c.event.Info.Chat.String()),
+				FromMe:    proto.Bool(c.event.Info.IsFromMe),
+				ID:        proto.String(c.event.Info.ID),
+			},
+			Text:              proto.String(emoji),
+			SenderTimestampMS: proto.Int64(c.event.Info.Timestamp.UnixMilli()),
+		},
+	}
+	c.client.SendMessage(stdctx.Background(), c.event.Info.Chat, msg)
+}
+
+func (c *Ctx) Edit(text string) error {
+	msgKey := &waCommon.MessageKey{
+		RemoteJID: proto.String(c.ChatJID().String()),
+		FromMe:    proto.Bool(true),
+		ID:        proto.String(c.event.Info.ID),
+	}
+
+	if c.message.GetExtendedTextMessage() != nil {
+		c.message.ExtendedTextMessage.Text = proto.String(text)
+	} else {
+		c.message = &waE2E.Message{
+			Conversation: proto.String(text),
+		}
+	}
+
+	editMsg := &waE2E.Message{
+		ProtocolMessage: &waE2E.ProtocolMessage{
+			Key:           msgKey,
+			Type:          waE2E.ProtocolMessage_MESSAGE_EDIT.Enum(),
+			EditedMessage: c.message,
+		},
+	}
+
+	_, err := c.client.SendMessage(stdctx.Background(), c.event.Info.Chat, editMsg)
+	return err
+}
+
+func (c *Ctx) Revoke() {
+	_, _ = c.client.SendMessage(
+		stdctx.Background(),
+		c.event.Info.Chat,
+		c.client.BuildRevoke(c.event.Info.Chat, c.event.Info.Sender, c.event.Info.ID),
+	)
+}
+
+func (c *Ctx) MarkRead() {
+	_ = c.client.MarkRead(
+		stdctx.Background(),
+		[]string{c.event.Info.ID},
+		c.event.Info.Timestamp,
+		c.event.Info.Chat,
+		c.event.Info.Sender,
+	)
+}
+
+func (c *Ctx) SendPresence(composing bool) {
+	state := waTypes.ChatPresencePaused
+	if composing {
+		state = waTypes.ChatPresenceComposing
+	}
+	_ = c.client.SubscribePresence(stdctx.Background(), c.event.Info.Chat)
+	_ = c.client.SendChatPresence(stdctx.Background(), c.event.Info.Chat, state, waTypes.ChatPresenceMediaText)
+}