feat(send): implement SendDice/Location/Venue/Contact/Poll

A shared sendMedia helper applies the send options and dispatches a
message.MediaOption. SendDice (defaults to the die), SendLocation, SendVenue,
SendContact and SendPoll (>=2 options) build on it.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: ernado

send_other.go

@@ -0,0 +1,73 @@
+package botapi
+
+import (
+	"context"
+
+	"github.com/gotd/td/telegram/message"
+	"github.com/gotd/td/tg"
+)
+
+// sendMedia applies the send options to a builder and sends a media message.
+func (b *Bot) sendMedia(ctx context.Context, chat ChatID, media message.MediaOption, opts ...SendOption) (*Message, error) {
+	var cfg sendConfig
+	for _, o := range opts {
+		o(&cfg)
+	}
+
+	peer, err := b.resolveInputPeer(ctx, chat)
+	if err != nil {
+		return nil, err
+	}
+
+	builder := &b.sender.To(peer).Builder
+	builder, err = b.applySendConfig(builder, cfg)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := builder.Media(ctx, media)
+	return b.sentMessage(ctx, peer, resp, err)
+}
+
+// SendDice sends an animated emoji with a random value. A zero emoji defaults
+// to the die (🎲).
+func (b *Bot) SendDice(ctx context.Context, chat ChatID, emoji DiceEmoji, opts ...SendOption) (*Message, error) {
+	if emoji == "" {
+		emoji = DiceDie
+	}
+	return b.sendMedia(ctx, chat, message.MediaDice(string(emoji)), opts...)
+}
+
+// SendLocation sends a point on the map.
+func (b *Bot) SendLocation(ctx context.Context, chat ChatID, latitude, longitude float64, opts ...SendOption) (*Message, error) {
+	return b.sendMedia(ctx, chat, message.GeoPoint(latitude, longitude, 0), opts...)
+}
+
+// SendVenue sends information about a venue.
+func (b *Bot) SendVenue(
+	ctx context.Context, chat ChatID, latitude, longitude float64, title, address string, opts ...SendOption,
+) (*Message, error) {
+	return b.sendMedia(ctx, chat, message.Venue(latitude, longitude, 0, title, address), opts...)
+}
+
+// SendContact sends a phone contact.
+func (b *Bot) SendContact(ctx context.Context, chat ChatID, phoneNumber, firstName, lastName string, opts ...SendOption) (*Message, error) {
+	return b.sendMedia(ctx, chat, message.Contact(tg.InputMediaContact{
+		PhoneNumber: phoneNumber,
+		FirstName:   firstName,
+		LastName:    lastName,
+	}), opts...)
+}
+
+// SendPoll sends a native poll. At least two options are required.
+func (b *Bot) SendPoll(ctx context.Context, chat ChatID, question string, options []string, opts ...SendOption) (*Message, error) {
+	if len(options) < 2 {
+		return nil, &Error{Code: 400, Description: "Bad Request: poll must have at least 2 option"}
+	}
+	answers := make([]message.PollAnswerOption, len(options))
+	for i, o := range options {
+		answers[i] = message.PollAnswer(o)
+	}
+	poll := message.Poll(question, answers[0], answers[1], answers[2:]...)
+	return b.sendMedia(ctx, chat, poll, opts...)
+}