"""Unit tests for logging configuration."""

from __future__ import annotations

import logging
from collections.abc import Generator
from pathlib import Path
from unittest.mock import patch

import pytest

from gitea_runner_manager.logging_config import get_logger


@pytest.fixture(autouse=True)
def _cleanup_loggers() -> Generator[None, None, None]:
    """Remove test loggers after each test to prevent state leakage."""
    yield
    for name in list(logging.Logger.manager.loggerDict.keys()):
        if name.startswith("test_"):
            logger = logging.getLogger(name)
            logger.handlers.clear()
            del logging.Logger.manager.loggerDict[name]


class TestGetLogger:
    def test_returns_logger(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.logging_config.Path.home", return_value=tmp_path):
            logger = get_logger("test_returns_logger")

        assert isinstance(logger, logging.Logger)
        assert logger.name == "test_returns_logger"
        assert len(logger.handlers) == 1  # file only

    def test_caches_same_instance(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.logging_config.Path.home", return_value=tmp_path):
            logger1 = get_logger("test_caches_same")
            logger2 = get_logger("test_caches_same")

        assert logger1 is logger2

    def test_file_handler_writes(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.logging_config.Path.home", return_value=tmp_path):
            logger = get_logger("test_file_writes")
            logger.info("hello from test")

        log_file = tmp_path / ".local" / "state" / "grm" / "logs" / "grm.log"
        assert log_file.exists()
        content = log_file.read_text()
        assert "hello from test" in content
        assert "INFO" in content

    def test_only_file_handler(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.logging_config.Path.home", return_value=tmp_path):
            logger = get_logger("test_only_file")

        assert len(logger.handlers) == 1
        assert isinstance(logger.handlers[0], logging.FileHandler)