from typing import Iterable

def make_keyboard_payload(buttons: Iterable[tuple[str, str]] | None):
    if not buttons:
        return None
    rows = [[{"text": t, "url": u}] for t, u in buttons]
    return {"rows": rows}


def build_payload(ptype: str, text: str | None, media_file_id: str | None,
                   parse_mode: str | None, keyboard: dict | None) -> dict:
    # ptype: "text" | "photo" | "video" | "animation"
    return {
        "type": ptype,
        "text": text,
        "media_file_id": media_file_id,
        "parse_mode": parse_mode,
        "keyboard": keyboard,
    }