"""Tests for login CLI subcommand.

Tests the login_command function and CLI integration.
"""

import json
from unittest.mock import MagicMock, patch, AsyncMock
import pytest

from kb_workflow.kb_workflow import login_command


class TestLoginCommand:
    """Test suite for login CLI command."""

    @pytest.fixture
    def mock_settings(self):
        """Mock settings with empty cookie."""
        settings = MagicMock()
        settings.intermediate_path = "/tmp/intermediate"
        settings.zhihu_cookie = MagicMock()
        settings.zhihu_cookie.get_secret_value = MagicMock(return_value="")
        return settings

    @pytest.fixture
    def mock_settings_with_cookie(self):
        """Mock settings with valid cookie."""
        settings = MagicMock()
        settings.intermediate_path = "/tmp/intermediate"
        settings.zhihu_cookie = MagicMock()
        settings.zhihu_cookie.get_secret_value = MagicMock(
            return_value="z_c0=test_cookie_value"
        )
        return settings

    @pytest.fixture
    def mock_login_result_success(self):
        """Mock successful login result."""
        from kb_workflow.auth.zhihu_login import ZhihuLoginResult
        return ZhihuLoginResult(
            success=True,
            cookie_str="z_c0=valid_cookie; _xsrf=xsrf_value",
            qrcode_path="/tmp/qrcode.png"
        )

    @pytest.fixture
    def mock_validation_result_valid(self):
        """Mock valid cookie validation result."""
        from kb_workflow.auth.zhihu_login import CookieValidationResult
        return CookieValidationResult(
            valid=True,
            username="TestUser",
            user_id="12345678"
        )

    def test_login_default_mode(
        self, mock_settings, mock_login_result_success
    ):
        """Test 1: login_default_mode - Default starts QR code login."""
        with patch('kb_workflow.pipeline.config.get_settings', return_value=mock_settings), \
             patch('kb_workflow.auth.cookie_manager.CookieManager') as MockManager, \
             patch('kb_workflow.auth.ZhihuLogin') as MockLogin:

            # Setup mock
            mock_login_instance = MagicMock()
            mock_login_instance.login_by_qrcode.return_value = mock_login_result_success
            MockLogin.return_value = mock_login_instance
            mock_manager = MagicMock()
            MockManager.return_value = mock_manager

            # Act
            result = login_command()

            # Assert
            assert result["success"] is True
            assert "cookie_str" in result
            mock_manager.save_cookie.assert_called_once()

    def test_login_import_cookie(self, mock_settings, tmp_path):
        """Test 2: login_import_cookie - --import-cookie imports JSON."""
        # Create temp cookie JSON file
        cookie_file = tmp_path / "cookies.json"
        cookie_file.write_text(json.dumps([
            {"name": "z_c0", "value": "imported_value", "domain": ".zhihu.com"}
        ]))

        with patch('kb_workflow.pipeline.config.get_settings', return_value=mock_settings), \
             patch('kb_workflow.auth.cookie_manager.CookieManager') as MockManager, \
             patch('kb_workflow.auth.cookie_manager.parse_json_cookies') as mock_parse:

            mock_parse.return_value = "z_c0=imported_value"
            mock_manager = MagicMock()
            MockManager.return_value = mock_manager

            # Act
            result = login_command(import_cookie=str(cookie_file))

            # Assert
            assert result["success"] is True
            assert "imported" in result["message"].lower()
            mock_manager.save_cookie.assert_called_once_with("z_c0=imported_value")

    def test_login_status_no_cookie(self, mock_settings):
        """Test 3a: login_status - --status with no cookie returns invalid."""
        with patch('kb_workflow.pipeline.config.get_settings', return_value=mock_settings):

            # Act
            result = login_command(status=True)

            # Assert
            assert result["valid"] is False
            assert "No cookie" in result["reason"]

    def test_login_status_valid_cookie(
        self, mock_settings_with_cookie, mock_validation_result_valid
    ):
        """Test 3b: login_status - --status with valid cookie returns user info."""
        with patch('kb_workflow.pipeline.config.get_settings', return_value=mock_settings_with_cookie), \
             patch('kb_workflow.kb_workflow.asyncio.run') as mock_run, \
             patch('kb_workflow.auth.ZhihuLogin') as MockLogin:

            # Setup mock - asyncio.run returns the result object directly
            mock_login_instance = MagicMock()
            MockLogin.return_value = mock_login_instance
            mock_run.return_value = mock_validation_result_valid  # Return object, not dict

            # Act
            result = login_command(status=True)

            # Assert
            assert result["valid"] is True
            assert result["username"] == "TestUser"
            assert result["user_id"] == "12345678"

    def test_login_integration(
        self, mock_settings, mock_login_result_success
    ):
        """Test 4: login_integration - Successful login saves cookie."""
        with patch('kb_workflow.pipeline.config.get_settings', return_value=mock_settings), \
             patch('kb_workflow.auth.cookie_manager.CookieManager') as MockManager, \
             patch('kb_workflow.auth.ZhihuLogin') as MockLogin:

            # Setup mock
            mock_login_instance = MagicMock()
            mock_login_instance.login_by_qrcode.return_value = mock_login_result_success
            MockLogin.return_value = mock_login_instance
            mock_manager = MagicMock()
            MockManager.return_value = mock_manager

            # Act
            result = login_command()

            # Assert - Cookie saved after successful login
            assert result["success"] is True
            mock_manager.save_cookie.assert_called_once_with(
                mock_login_result_success.cookie_str
            )

    def test_login_error_handling(self, mock_settings):
        """Test 5: login handles exceptions gracefully."""
        with patch('kb_workflow.pipeline.config.get_settings', side_effect=Exception("Config error")):

            # Act
            result = login_command()

            # Assert
            assert result["success"] is False
            assert "Config error" in result["error"]