from __future__ import annotations

from aiogram import Bot
from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup

from app.models import Offer


class TelegramPublisher:
    def __init__(self, bot: Bot, channel_id: str) -> None:
        self._bot = bot
        self._channel_id = channel_id

    async def publish_offer(self, offer: Offer) -> None:
        await self._bot.send_message(
            chat_id=self._channel_id,
            text=_format_offer_message(offer),
            disable_web_page_preview=True,
            reply_markup=_build_delete_markup(),
        )


def _format_offer_message(offer: Offer) -> str:
    seller_line = f"Исполнитель: @{offer.seller_username}\n" if offer.seller_username else ""
    description = offer.description.strip()
    if len(description) > 1000:
        description = f"{description[:997].rstrip()}..."

    return (
        f"Новый оффер: {offer.title}\n"
        f"Источник: #{offer.source}\n"
        f"Категория: {offer.category_id}\n"
        f"Бюджет: {offer.price}\n"
        f"Опубликовано: {offer.published_at}\n"
        f"{seller_line}"
        f"\n"
        f"{description}\n\n"
        f"Ссылка: {offer.url}"
    )


def _build_delete_markup() -> InlineKeyboardMarkup:
    return InlineKeyboardMarkup(
        inline_keyboard=[
            [InlineKeyboardButton(text="❌", callback_data="delete_post")]
        ]
    )