"""
Pytest configuration and fixtures for unit tests

Provides cleanup for temporary files created during tests.
"""

import pytest
import os
import tempfile
from pathlib import Path


@pytest.fixture
def temp_yaml_file():
    """Create a temporary YAML file and clean it up after the test."""
    temp_file = tempfile.NamedTemporaryFile(
        mode='w', prefix='cleveragent_', suffix='.yaml', delete=False
    )
    temp_file.close()

    yield temp_file.name

    # Cleanup
    try:
        os.unlink(temp_file.name)
    except (FileNotFoundError, PermissionError):
        pass


@pytest.fixture
def temp_json_file():
    """Create a temporary JSON file and clean it up after the test."""
    temp_file = tempfile.NamedTemporaryFile(
        mode='w', prefix='cleveragent_', suffix='.json', delete=False
    )
    temp_file.close()

    yield temp_file.name

    # Cleanup
    try:
        os.unlink(temp_file.name)
    except (FileNotFoundError, PermissionError):
        pass


@pytest.fixture
def temp_file_tracker():
    """
    Track temporary files created during a test and clean them up.

    Usage:
        def test_something(temp_file_tracker):
            temp_file = temp_file_tracker.create('.yaml')
            # ... use temp_file ...
            # Automatic cleanup after test
    """
    class TempFileTracker:
        def __init__(self):
            self.files = []

        def create(self, suffix='', mode='w', **kwargs):
            """Create a tracked temporary file."""
            temp_file = tempfile.NamedTemporaryFile(
                mode=mode,
                prefix='cleveragent_',
                suffix=suffix,
                delete=False,
                **kwargs
            )
            temp_file.close()
            self.files.append(temp_file.name)
            return temp_file.name

        def cleanup(self):
            """Clean up all tracked files."""
            for filepath in self.files:
                try:
                    os.unlink(filepath)
                except (FileNotFoundError, PermissionError):
                    pass
            self.files = []

    tracker = TempFileTracker()
    yield tracker
    tracker.cleanup()


@pytest.fixture(scope="session", autouse=True)
def cleanup_cleveragent_temp_files():
    """
    Auto-cleanup fixture that runs after entire test session.

    Cleans up CleverAgents-specific temporary files to prevent resource leaks.
    Uses 'cleveragent_' prefix to avoid deleting other programs' files.

    This is a safety net for any tests that don't use the temp_file_tracker fixture.
    """
    yield  # Tests run

    # After all tests complete, clean up temp files with our prefix
    import glob

    # Only match files with our specific prefix
    patterns = [
        "/tmp/cleveragent_*.yaml",
        "/tmp/cleveragent_*.json",
        "/tmp/cleveragent_*.txt",
        "/tmp/cleveragent_*.j2",
        "/var/tmp/cleveragent_*.yaml",
        "/var/tmp/cleveragent_*.json"
    ]

    cleaned = 0
    for pattern in patterns:
        for temp_file in glob.glob(pattern):
            try:
                if os.path.exists(temp_file):
                    os.unlink(temp_file)
                    cleaned += 1
            except Exception:
                pass  # Ignore cleanup errors

    if cleaned > 0:
        print(f"\n✅ Cleaned up {cleaned} CleverAgents temporary test files")