import sys
from unittest.mock import patch, MagicMock
import pytest
from pathlib import Path

# Mock tkinter and other GUI/macOS specific imports
sys.modules["tkinter"] = MagicMock()
sys.modules["tkinter.ttk"] = MagicMock()
sys.modules["tkinter.scrolledtext"] = MagicMock()
sys.modules["tkinter.messagebox"] = MagicMock()
sys.modules["Foundation"] = MagicMock()
sys.modules["AppKit"] = MagicMock()
sys.modules["PIL"] = MagicMock()
sys.modules["PIL.Image"] = MagicMock()
sys.modules["PIL.ImageTk"] = MagicMock()

import install
from install import ProleInstaller


@pytest.fixture
def mock_installer(tmp_path):
    test_cfg_src = Path(__file__).parent / "fixtures" / "test-prole.cfg"
    cfg_path = tmp_path / "prole.cfg"
    cfg_path.write_text(test_cfg_src.read_text())

    with patch("install.tk.Tk"), patch("install.tk.Frame"), patch(
        "install.tk.Canvas"
    ), patch("install.tk.Label"), patch("install.tk.Button"), patch(
        "install.tk.Entry"
    ) as mock_entry, patch(
        "install.tk.StringVar"
    ), patch(
        "install.tk.BooleanVar"
    ), patch(
        "install.tk.IntVar"
    ), patch(
        "install.ttk.Style"
    ), patch(
        "install.Path.exists", return_value=True
    ), patch(
        "install.Path.mkdir"
    ), patch.object(
        ProleInstaller, "_save_env_to_file"
    ), patch.object(
        ProleInstaller, "_save_prole_cfg"
    ), patch.object(
        ProleInstaller, "_save_ansible_prole_vault"
    ), patch.object(
        ProleInstaller, "_after_env_saved"
    ), patch(
        "threading.Thread"
    ):

        mock_entry.return_value.get.return_value.strip.return_value = "mock_val"
        root = MagicMock()
        root.winfo_screenwidth.return_value = 1920
        root.winfo_screenheight.return_value = 1080

        app = ProleInstaller(root, config_path=str(cfg_path))
        app.bg_canvas.winfo_width.return_value = 1000
        return app


def test_service_layer_navigation_pause(mock_installer):
    # Go to init_cluster
    mock_installer.show_page("init_cluster")

    # Mock cluster ready
    with patch.object(
        mock_installer, "_cluster_ready_for_navigation", return_value=True
    ):
        # Click Next - should NOT go to init_password yet, but show overlay
        with patch.object(mock_installer, "_run_service_layer_overlay") as mock_overlay:
            mock_installer.on_next()
            mock_overlay.assert_called_once()
            assert mock_installer.pages[mock_installer.page_index][0] == "init_cluster"


def test_service_layer_overlay_behavior(mock_installer):
    mock_installer.show_page("init_cluster")

    # Trigger overlay
    with patch.object(
        mock_installer, "_cluster_ready_for_navigation", return_value=True
    ), patch.object(mock_installer, "_create_console_output"):
        mock_installer.on_next()

    assert mock_installer._showing_service_overlay is True
    assert mock_installer._common_services_success is False

    # Next button should be disabled via update_footer
    mock_installer.next_button = MagicMock()
    mock_installer.prev_button = MagicMock()
    mock_installer.update_footer()
    mock_installer.next_button.configure.assert_any_call(state="disabled")

    # Simulate success
    mock_installer._common_services_success = True
    mock_installer.next_button.reset_mock()
    mock_installer.update_footer()
    mock_installer.next_button.configure.assert_any_call(state="normal")

    # Now Next should proceed
    with patch.object(
        mock_installer, "_cluster_ready_for_navigation", return_value=True
    ):
        mock_installer.on_next()
        assert mock_installer.pages[mock_installer.page_index][0] == "database_options"


def test_service_layer_prev_behavior(mock_installer):
    mock_installer.show_page("init_cluster")
    with patch.object(
        mock_installer, "_cluster_ready_for_navigation", return_value=True
    ), patch.object(mock_installer, "_create_console_output"):
        mock_installer.on_next()

    assert mock_installer._showing_service_overlay is True

    # Prev from overlay should go back to init_cluster and reset overlay flag
    mock_installer.on_prev()
    assert mock_installer._showing_service_overlay is False
    assert mock_installer.pages[mock_installer.page_index][0] == "init_cluster"