"""Pytest configuration and fixtures."""

import os
import tempfile
import shutil
from pathlib import Path
from datetime import datetime

import pytest

from git import Repo


@pytest.fixture
def sample_git_repo():
    """Create a sample Git repository for testing.

    Creates a temporary directory with a Git repository containing
    multiple files and commits from different authors.

    Returns:
        Path to the temporary repository.
    """
    temp_dir = tempfile.mkdtemp(prefix="repohealth_test_")
    repo_path = Path(temp_dir)

    repo = Repo.init(repo_path)

    config = repo.config_writer()
    config.set_value("user", "name", "Test Author 1")
    config.set_value("user", "email", "author1@example.com")
    config.release()

    (repo_path / "main.py").write_text("# Main module\n\ndef hello():\n    return 'Hello'\n")
    (repo_path / "utils.py").write_text("# Utility functions\n\ndef helper():\n    return True\n")
    (repo_path / "test_main.py").write_text("# Tests for main\n\ndef test_hello():\n    assert hello() == 'Hello'\n")

    repo.index.add(["main.py", "utils.py", "test_main.py"])
    repo.index.commit("Initial commit with main files")

    config = repo.config_writer()
    config.set_value("user", "name", "Test Author 2")
    config.set_value("user", "email", "author2@example.com")
    config.release()

    (repo_path / "main.py").write_text("# Main module\n\ndef hello():\n    return 'Hello'\n\ndef goodbye():\n    return 'Goodbye'\n")
    (repo_path / "utils.py").write_text("# Utility functions\n\ndef helper():\n    return True\n\ndef complex_func():\n    return 42\n")

    repo.index.add(["main.py", "utils.py"])
    repo.index.commit("Add goodbye function and complex_func")

    config = repo.config_writer()
    config.set_value("user", "name", "Test Author 1")
    config.set_value("user", "email", "author1@example.com")
    config.release()

    (repo_path / "main.py").write_text("# Main module\n\ndef hello():\n    return 'Hello'\n\ndef goodbye():\n    return 'Goodbye'\n\ndef greet(name):\n    return f'Hello, {name}'\n")

    repo.index.add(["main.py"])
    repo.index.commit("Add greet function")

    config = repo.config_writer()
    config.set_value("user", "name", "Test Author 3")
    config.set_value("user", "email", "author3@example.com")
    config.release()

    (repo_path / "helpers.py").write_text("# Additional helpers\n\ndef new_helper():\n    return False\n")
    (repo_path / "test_helpers.py").write_text("# Tests for helpers\n\ndef test_new_helper():\n    assert new_helper() == False\n")

    repo.index.add(["helpers.py", "test_helpers.py"])
    repo.index.commit("Add helpers module")

    (repo_path / "core.py").write_text("# Core module - critical file\n\nclass CoreClass:\n    def __init__(self):\n        self.data = []\n\n    def process(self, item):\n        self.data.append(item)\n")

    repo.index.add(["core.py"])
    repo.index.commit("Add core module")

    yield repo_path

    shutil.rmtree(temp_dir)


@pytest.fixture
def single_author_repo():
    """Create a repository with single author for critical risk testing.

    Returns:
        Path to the temporary repository.
    """
    temp_dir = tempfile.mkdtemp(prefix="repohealth_single_")
    repo_path = Path(temp_dir)

    repo = Repo.init(repo_path)

    config = repo.config_writer()
    config.set_value("user", "name", "Solo Author")
    config.set_value("user", "email", "solo@example.com")
    config.release()

    for i in range(10):
        (repo_path / f"module_{i}.py").write_text(f"# Module {i}\n\ndef func_{i}():\n    return {i}\n")
        repo.index.add([f"module_{i}.py"])
        repo.index.commit(f"Add module {i}")

    yield repo_path

    shutil.rmtree(temp_dir)


@pytest.fixture
def empty_repo():
    """Create an empty Git repository.

    Returns:
        Path to the empty repository.
    """
    temp_dir = tempfile.mkdtemp(prefix="repohealth_empty_")
    repo_path = Path(temp_dir)

    Repo.init(repo_path)

    yield repo_path

    shutil.rmtree(temp_dir)


@pytest.fixture
def temp_dir():
    """Provide a temporary directory for test artifacts.

    Returns:
        Path to a temporary directory.
    """
    temp_dir = tempfile.mkdtemp(prefix="repohealth_artifacts_")
    yield Path(temp_dir)
    shutil.rmtree(temp_dir)