from urllib.parse import urljoin

from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup, WebAppInfo

from app.core.config import settings


def _mini_app_url(path: str = "") -> str:
    base = settings.mini_app_url.rstrip("/") + "/"
    return urljoin(base, path.lstrip("/"))


def main_menu_keyboard() -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(inline_keyboard=[[
        InlineKeyboardButton(
            text="Open lottery app",
            web_app=WebAppInfo(url=_mini_app_url()),
        )
    ]])


def create_lottery_keyboard() -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(inline_keyboard=[[
        InlineKeyboardButton(
            text="Create lottery",
            web_app=WebAppInfo(url=_mini_app_url("/create")),
        )
    ]])


def lottery_detail_keyboard(lottery_id: str, text: str = "🎰 Join lottery") -> InlineKeyboardMarkup:
    """For private chat messages - web_app is allowed here."""
    return InlineKeyboardMarkup(inline_keyboard=[[
        InlineKeyboardButton(
            text=text,
            web_app=WebAppInfo(url=_mini_app_url(f"/lottery/{lottery_id}")),
        )
    ]])


def lottery_announce_keyboard(lottery_id: str) -> InlineKeyboardMarkup:
    """For group/channel announcements - web_app is not allowed; use t.me deep link."""
    from app.bot.router import bot_username
    if bot_username:
        url = f"https://t.me/{bot_username}?start=lottery_{lottery_id}"
    else:
        url = _mini_app_url(f"/lottery/{lottery_id}")
    return InlineKeyboardMarkup(inline_keyboard=[[
        InlineKeyboardButton(text="🎰 Join lottery", url=url)
    ]])