from pathlib import Path

import pytest

from restreamer.config import load_channels


def test_load_channels_parses_valid_file(tmp_path: Path) -> None:
    channels_file = tmp_path / "channels.yaml"
    channels_file.write_text(
        """
        channels:
          - id: news
            name: "News Live"
            url: "https://www.youtube.com/watch?v=abc123"
          - id: music
            name: "Music Live"
            url: "https://www.youtube.com/watch?v=def456"
            refresh_interval_seconds: 3600
        """,
        encoding="utf-8",
    )

    channels = load_channels(channels_file)

    assert [c.id for c in channels] == ["news", "music"]
    assert channels[1].refresh_interval_seconds == 3600


def test_load_channels_missing_file_raises(tmp_path: Path) -> None:
    with pytest.raises(FileNotFoundError):
        load_channels(tmp_path / "does_not_exist.yaml")


def test_load_channels_rejects_duplicate_ids(tmp_path: Path) -> None:
    channels_file = tmp_path / "channels.yaml"
    channels_file.write_text(
        """
        channels:
          - id: news
            name: "News Live"
            url: "https://www.youtube.com/watch?v=abc123"
          - id: news
            name: "News Live Again"
            url: "https://www.youtube.com/watch?v=def456"
        """,
        encoding="utf-8",
    )

    with pytest.raises(ValueError, match="Duplicate channel id"):
        load_channels(channels_file)