"""Unit tests for devx.tools.setup."""

import subprocess
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest
from click.testing import CliRunner

from devx.tools.setup import (
    _install_pre_commit_hooks,
    _install_python_deps,
    _run,
    _verify,
    main,
)


class TestRun:
    @patch("devx.tools.setup.subprocess.run")
    def test_run_success(self, mock_run: MagicMock) -> None:
        _run(["echo", "hello"])
        mock_run.assert_called_once_with(["echo", "hello"], check=True)

    @patch("devx.tools.setup.subprocess.run")
    def test_run_failure_raises(self, mock_run: MagicMock) -> None:
        mock_run.side_effect = subprocess.CalledProcessError(1, ["echo", "hello"])
        with pytest.raises(subprocess.CalledProcessError):
            _run(["echo", "hello"])


class TestInstallPythonDeps:
    @patch("devx.tools.setup._run")
    def test_install_dev(self, mock_run: MagicMock) -> None:
        _install_python_deps(".venv/bin", "dev")
        mock_run.assert_called_once_with([".venv/bin/pip", "install", "-e", ".[dev]"])

    @patch("devx.tools.setup._run")
    def test_install_ci(self, mock_run: MagicMock) -> None:
        _install_python_deps(".venv/bin", "ci")
        mock_run.assert_called_once_with([".venv/bin/pip", "install", "-e", ".[ci]"])

    @patch("devx.tools.setup._run")
    def test_install_custom_extras(self, mock_run: MagicMock) -> None:
        _install_python_deps(".venv/bin", "ci,lint")
        mock_run.assert_called_once_with([".venv/bin/pip", "install", "-e", ".[ci,lint]"])


class TestInstallPreCommitHooks:
    @patch("devx.tools.setup._run")
    def test_installs_all_hook_types(self, mock_run: MagicMock) -> None:
        _install_pre_commit_hooks(".venv/bin")
        assert mock_run.call_count == 3
        hook_types = [call.args[0][3] for call in mock_run.call_args_list]
        assert "pre-commit" in hook_types
        assert "commit-msg" in hook_types
        assert "pre-push" in hook_types


class TestVerify:
    @patch("devx.tools.setup.subprocess.run")
    def test_verify_runs_tools(self, mock_run: MagicMock) -> None:
        mock_run.return_value = MagicMock(returncode=0, stdout="devx 0.1.0", stderr="")
        _verify(".venv/bin")
        # Should try to run --version for devx and pre-commit
        assert mock_run.call_count >= 1

    @patch("devx.tools.setup.subprocess.run")
    def test_verify_handles_missing_tools(self, mock_run: MagicMock) -> None:
        mock_run.side_effect = FileNotFoundError("not found")
        _verify(".venv/bin")  # Should not raise

    @patch("devx.tools.setup.subprocess.run")
    def test_verify_handles_timeout(self, mock_run: MagicMock) -> None:
        mock_run.side_effect = subprocess.TimeoutExpired(cmd="devx", timeout=10)
        _verify(".venv/bin")  # Should not raise


class TestMain:
    @patch("devx.tools.setup._verify")
    @patch("devx.tools.setup._install_pre_commit_hooks")
    @patch("devx.tools.setup._install_python_deps")
    def test_main_success(
        self,
        mock_install_deps: MagicMock,
        mock_install_hooks: MagicMock,
        mock_verify: MagicMock,
        tmp_path: Path,
    ) -> None:
        bin_dir = tmp_path / "bin"
        bin_dir.mkdir()
        runner = CliRunner()
        result = runner.invoke(main, ["--bin", str(bin_dir)])
        assert result.exit_code == 0
        mock_install_deps.assert_called_once()
        mock_install_hooks.assert_called_once()
        mock_verify.assert_called_once()

    @patch("devx.tools.setup._verify")
    @patch("devx.tools.setup._install_pre_commit_hooks")
    @patch("devx.tools.setup._install_python_deps")
    def test_main_no_pre_commit(
        self,
        mock_install_deps: MagicMock,
        mock_install_hooks: MagicMock,
        mock_verify: MagicMock,
        tmp_path: Path,
    ) -> None:
        bin_dir = tmp_path / "bin"
        bin_dir.mkdir()
        runner = CliRunner()
        result = runner.invoke(main, ["--bin", str(bin_dir), "--no-pre-commit"])
        assert result.exit_code == 0
        mock_install_deps.assert_called_once()
        mock_install_hooks.assert_not_called()

    @patch("devx.tools.setup._verify")
    @patch("devx.tools.setup._install_pre_commit_hooks")
    @patch("devx.tools.setup._install_python_deps")
    def test_main_custom_extras(
        self,
        mock_install_deps: MagicMock,
        mock_install_hooks: MagicMock,
        mock_verify: MagicMock,
        tmp_path: Path,
    ) -> None:
        bin_dir = tmp_path / "bin"
        bin_dir.mkdir()
        runner = CliRunner()
        result = runner.invoke(main, ["--bin", str(bin_dir), "--extras", "ci"])
        assert result.exit_code == 0
        mock_install_deps.assert_called_once_with(str(bin_dir), "ci")

    @patch("devx.tools.setup._verify")
    @patch("devx.tools.setup._install_pre_commit_hooks")
    @patch("devx.tools.setup._install_python_deps")
    def test_main_no_tea_login_noop(
        self,
        mock_install_deps: MagicMock,
        mock_install_hooks: MagicMock,
        mock_verify: MagicMock,
        tmp_path: Path,
    ) -> None:
        """--no-tea-login is a no-op (kept for backwards compatibility)."""
        bin_dir = tmp_path / "bin"
        bin_dir.mkdir()
        runner = CliRunner()
        result = runner.invoke(main, ["--bin", str(bin_dir), "--no-tea-login"])
        assert result.exit_code == 0

    def test_main_missing_bin_dir(self) -> None:
        runner = CliRunner()
        result = runner.invoke(main, ["--bin", "/nonexistent/path"])
        assert result.exit_code != 0
        assert "Bin directory not found" in result.output


def test_main_module_block(tmp_path: Path) -> None:
    """Test the __main__ block execution."""
    bin_dir = tmp_path / "bin"
    bin_dir.mkdir()
    with patch.dict("os.environ", {}, clear=True):
        with patch("devx.tools.setup._install_python_deps") as mock_deps:
            with patch("devx.tools.setup._install_pre_commit_hooks"):
                with patch("devx.tools.setup._verify"):
                    runner = CliRunner()
                    result = runner.invoke(main, ["--bin", str(bin_dir)])
                    assert result.exit_code == 0
                    mock_deps.assert_called_once()