"""Тесты для commands/news.py — команда !nw."""

import sys
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

ROOT_DIR = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(ROOT_DIR))


def make_context() -> MagicMock:
    """Создать мокированный ctx."""
    ctx = MagicMock()
    ctx.author.name = "TestUser"
    ctx.send = AsyncMock(return_value=None)
    return ctx


class TestNewsInit:
    """Тесты инициализации News cog."""

    def test_news_cog_instantiates(self) -> None:
        """News должен создаваться без параметров."""
        from commands.news import News

        cog = News()
        assert cog is not None

    def test_news_has_command(self) -> None:
        """News должен содержать команду nw."""
        from commands.news import News

        cog = News()
        assert cog.nw.name == "nw"


class TestNewsCommand:
    """Тесты команды !nw."""

    def _make_articles(self, count: int = 3) -> list[dict]:
        return [
            {"title": f"Статья {i}", "link": f"https://habr.com/article/{i}", "pub_date": f"Mon, 28 May 2026 10:00:00 +0000", "creator": "author", "tags": []}
            for i in range(1, count + 1)
        ]

    @pytest.mark.asyncio
    async def test_nw_success_articles_and_posts(self) -> None:
        """Успешный ответ API для статей и постов."""
        from commands.news import News

        cog = News()
        ctx = make_context()
        articles = self._make_articles(3)
        posts = self._make_articles(2)

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.side_effect = [articles, posts]
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        call_count = mock_rss.await_count
        assert call_count == 2  # статьи + посты

    @pytest.mark.asyncio
    async def test_nw_articles_none(self) -> None:
        """fetch_rss вернул None для статей -> fallback сообщение."""
        from commands.news import News

        cog = News()
        ctx = make_context()

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.return_value = None
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        content = ctx.send.call_args[0][0]
        assert "Не удалось получить новости" in content

    @pytest.mark.asyncio
    async def test_nw_empty_articles(self) -> None:
        """Пустой список статей -> 'Новостей пока нет'."""
        from commands.news import News

        cog = News()
        ctx = make_context()

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.return_value = []
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        content = ctx.send.call_args[0][0]
        assert "Новостей пока нет" in content

    @pytest.mark.asyncio
    async def test_nw_posts_none(self) -> None:
        """fetch_rss вернул None для постов -> fallback в сообщение."""
        from commands.news import News

        cog = News()
        ctx = make_context()
        articles = self._make_articles(2)

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.side_effect = [articles, None]
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        content = ctx.send.call_args[0][0]
        assert "Не удалось получить новости" in content

    @pytest.mark.asyncio
    async def test_nw_posts_empty(self) -> None:
        """Пустой список постов -> 'Новостей пока нет' для постов."""
        from commands.news import News

        cog = News()
        ctx = make_context()
        articles = self._make_articles(2)

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.side_effect = [articles, []]
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        content = ctx.send.call_args[0][0]
        # Second "Новостей пока нет" for posts section
        count = content.count("Новостей пока нет")
        assert count >= 1

    @pytest.mark.asyncio
    async def test_nw_limits_articles_to_5(self) -> None:
        """Более 5 статей -> truncate_message обрежет."""
        from commands.news import News

        cog = News()
        ctx = make_context()
        articles = self._make_articles(20)
        posts = self._make_articles(20)

        with patch("commands.news.fetch_rss", new_callable=AsyncMock) as mock_rss:
            mock_rss.side_effect = [articles, posts]
            await cog.nw(cog, ctx)

        ctx.send.assert_awaited_once()
        content = ctx.send.call_args[0][0]
        # truncate_message limits to 2000 chars for plain text
        assert len(content) <= 2003  # 2000 + "..."