"""
Unit tests for stealth / anti-detection fixes (issue #110).

Covers:
  - _SyncIsolatedWorld / _AsyncIsolatedWorld — CDP isolated-world lifecycle
  - _is_input_element / _is_selector_focused — stealth DOM queries with fallback
  - _type_shift_symbol / _type_shift_symbol (async) — CDP Input.dispatchKeyEvent path
  - Navigation invalidation (goto → stealth.invalidate)
  - patch_page stealth infrastructure wiring
  - SHIFT_SYMBOL_CODES / SHIFT_SYMBOL_KEYCODES completeness

All tests are fast, mock-based, and do NOT require a browser.
"""

import asyncio
import json
import math
import sys
import time

import pytest
from unittest.mock import MagicMock, AsyncMock, patch as mock_patch, call


# =========================================================================
# Helper: quick config
# =========================================================================

def _cfg(**overrides):
    from cloakbrowser.human.config import resolve_config
    return resolve_config("default", overrides or None)


# =========================================================================
# 12. _SyncIsolatedWorld
# =========================================================================

class TestSyncIsolatedWorld:
    """Tests for the synchronous CDP isolated-world wrapper."""

    def _make_world(self, cdp_send_side_effect=None):
        """Return (_SyncIsolatedWorld, mock_page, mock_cdp)."""
        from cloakbrowser.human import _SyncIsolatedWorld

        mock_cdp = MagicMock()
        mock_cdp.send = MagicMock(side_effect=cdp_send_side_effect)

        mock_context = MagicMock()
        mock_context.new_cdp_session = MagicMock(return_value=mock_cdp)

        mock_page = MagicMock()
        mock_page.context = mock_context

        world = _SyncIsolatedWorld(mock_page)
        return world, mock_page, mock_cdp

    def test_initial_state(self):
        from cloakbrowser.human import _SyncIsolatedWorld
        page = MagicMock()
        w = _SyncIsolatedWorld(page)
        assert w._cdp is None
        assert w._context_id is None

    def test_evaluate_creates_world_and_returns_value(self):
        """First evaluate() should create CDP session → isolated world → Runtime.evaluate."""
        call_counter = {"n": 0}

        def cdp_send(method, params=None):
            call_counter["n"] += 1
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 42}
            if method == "Runtime.evaluate":
                return {"result": {"value": True}}
            return {}

        world, page, cdp = self._make_world(cdp_send_side_effect=cdp_send)
        result = world.evaluate("1 + 1")

        assert result is True
        assert world._context_id == 42
        assert world._cdp is not None

    def test_evaluate_caches_context_id(self):
        """Second evaluate() reuses cached context_id — no second createIsolatedWorld."""
        create_calls = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                create_calls["n"] += 1
                return {"executionContextId": 99}
            if method == "Runtime.evaluate":
                return {"result": {"value": "ok"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        world.evaluate("a")
        world.evaluate("b")

        assert create_calls["n"] == 1  # world created only once

    def test_evaluate_retries_on_exception_details(self):
        """If Runtime.evaluate returns exceptionDetails, recreate world and retry."""
        attempt = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 50 + attempt["n"]}
            if method == "Runtime.evaluate":
                attempt["n"] += 1
                if attempt["n"] == 1:
                    return {"exceptionDetails": {"text": "stale"}}
                return {"result": {"value": "recovered"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = world.evaluate("test")
        assert result == "recovered"

    def test_evaluate_retries_on_cdp_exception(self):
        """If cdp.send raises, recreate world and retry."""
        attempt = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 60 + attempt["n"]}
            if method == "Runtime.evaluate":
                attempt["n"] += 1
                if attempt["n"] == 1:
                    raise Exception("Target closed")
                return {"result": {"value": "ok"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = world.evaluate("test")
        assert result == "ok"

    def test_evaluate_returns_none_after_double_failure(self):
        """If both attempts fail, evaluate returns None."""
        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 70}
            if method == "Runtime.evaluate":
                return {"exceptionDetails": {"text": "always broken"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = world.evaluate("broken")
        assert result is None

    def test_invalidate_resets_context_id(self):
        """invalidate() sets _context_id to None."""
        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 80}
            if method == "Runtime.evaluate":
                return {"result": {"value": "val"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        world.evaluate("x")
        assert world._context_id == 80

        world.invalidate()
        assert world._context_id is None

    def test_get_cdp_session_creates_and_caches(self):
        """get_cdp_session() creates and caches the CDP session."""
        world, page, cdp = self._make_world()
        session = world.get_cdp_session()
        assert session is cdp
        # Second call returns same session
        session2 = world.get_cdp_session()
        assert session2 is session

    def test_evaluate_returns_none_when_create_world_fails_on_retry(self):
        """If _create_world fails during retry, return None gracefully."""
        attempt = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                if attempt["n"] > 0:
                    raise Exception("Frame tree gone")
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 90}
            if method == "Runtime.evaluate":
                attempt["n"] += 1
                raise Exception("Fail")
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = world.evaluate("test")
        assert result is None


# =========================================================================
# 13. _AsyncIsolatedWorld
# =========================================================================

class TestAsyncIsolatedWorld:
    """Tests for the async CDP isolated-world wrapper."""

    def _make_world(self, cdp_send_side_effect=None):
        from cloakbrowser.human import _AsyncIsolatedWorld

        mock_cdp = MagicMock()
        if cdp_send_side_effect:
            mock_cdp.send = AsyncMock(side_effect=cdp_send_side_effect)
        else:
            mock_cdp.send = AsyncMock()

        mock_context = MagicMock()
        mock_context.new_cdp_session = AsyncMock(return_value=mock_cdp)

        mock_page = MagicMock()
        mock_page.context = mock_context

        world = _AsyncIsolatedWorld(mock_page)
        return world, mock_page, mock_cdp

    @pytest.mark.asyncio
    async def test_initial_state(self):
        from cloakbrowser.human import _AsyncIsolatedWorld
        page = MagicMock()
        w = _AsyncIsolatedWorld(page)
        assert w._cdp is None
        assert w._context_id is None

    @pytest.mark.asyncio
    async def test_evaluate_creates_world_and_returns_value(self):
        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "AF1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 142}
            if method == "Runtime.evaluate":
                return {"result": {"value": True}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = await world.evaluate("async test")
        assert result is True
        assert world._context_id == 142

    @pytest.mark.asyncio
    async def test_evaluate_retries_on_exception_details(self):
        attempt = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "AF1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 150 + attempt["n"]}
            if method == "Runtime.evaluate":
                attempt["n"] += 1
                if attempt["n"] == 1:
                    return {"exceptionDetails": {"text": "stale"}}
                return {"result": {"value": "async_recovered"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)
        result = await world.evaluate("test")
        assert result == "async_recovered"

    @pytest.mark.asyncio
    async def test_invalidate_and_recreate(self):
        create_count = {"n": 0}

        def cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "AF1"}}}
            if method == "Page.createIsolatedWorld":
                create_count["n"] += 1
                return {"executionContextId": 200 + create_count["n"]}
            if method == "Runtime.evaluate":
                return {"result": {"value": "ok"}}
            return {}

        world, _, _ = self._make_world(cdp_send_side_effect=cdp_send)

        await world.evaluate("first")
        assert create_count["n"] == 1

        world.invalidate()
        assert world._context_id is None

        await world.evaluate("second")
        assert create_count["n"] == 2  # recreated

    @pytest.mark.asyncio
    async def test_get_cdp_session_async(self):
        world, page, cdp = self._make_world()
        session = await world.get_cdp_session()
        assert session is cdp


# =========================================================================
# 14. _is_input_element stealth
# =========================================================================

class TestIsInputElementStealth:
    """Tests for stealth-aware _is_input_element."""

    def test_uses_isolated_world_when_available(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(return_value=True)

        page = MagicMock()
        page._stealth_world = mock_world

        result = _is_input_element(page, "#myInput")
        assert result is True
        # Should have called isolated world, NOT page.evaluate
        mock_world.evaluate.assert_called_once()
        page.evaluate.assert_not_called()

    def test_isolated_world_receives_escaped_selector(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(return_value=False)

        page = MagicMock()
        page._stealth_world = mock_world

        _is_input_element(page, 'input[name="email"]')

        call_args = mock_world.evaluate.call_args[0][0]
        # The escaped selector must appear in the expression
        assert json.dumps('input[name="email"]') in call_args or 'input[name=\\"email\\"]' in call_args

    def test_returns_false_for_non_input(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(return_value=False)

        page = MagicMock()
        page._stealth_world = mock_world

        result = _is_input_element(page, "#btn")
        assert result is False

    def test_falls_back_to_evaluate_when_no_stealth_world(self):
        from cloakbrowser.human import _is_input_element

        page = MagicMock()
        page._stealth_world = None
        page.evaluate = MagicMock(return_value=True)

        result = _is_input_element(page, "#inp")
        assert result is True
        page.evaluate.assert_called_once()

    def test_falls_back_to_evaluate_when_isolated_world_raises(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(side_effect=Exception("CDP gone"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = MagicMock(return_value=True)

        result = _is_input_element(page, "#inp")
        assert result is True
        page.evaluate.assert_called_once()

    def test_returns_false_when_both_paths_fail(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(side_effect=Exception("CDP gone"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = MagicMock(side_effect=Exception("page gone"))

        result = _is_input_element(page, "#inp")
        assert result is False

    def test_no_stealth_world_attr_falls_back(self):
        """If page doesn't have _stealth_world at all, use fallback."""
        from cloakbrowser.human import _is_input_element

        page = MagicMock(spec=[])  # no _stealth_world attribute
        page.evaluate = MagicMock(return_value=False)

        result = _is_input_element(page, "#x")
        assert result is False


# =========================================================================
# 14b. _async_is_input_element stealth
# =========================================================================

class TestAsyncIsInputElementStealth:

    @pytest.mark.asyncio
    async def test_uses_isolated_world_when_available(self):
        from cloakbrowser.human import _async_is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = AsyncMock(return_value=True)

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = AsyncMock()

        result = await _async_is_input_element(page, "#myInput")
        assert result is True
        mock_world.evaluate.assert_called_once()
        page.evaluate.assert_not_called()

    @pytest.mark.asyncio
    async def test_falls_back_when_isolated_world_fails(self):
        from cloakbrowser.human import _async_is_input_element

        mock_world = MagicMock()
        mock_world.evaluate = AsyncMock(side_effect=Exception("dead"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = AsyncMock(return_value=True)

        result = await _async_is_input_element(page, "#inp")
        assert result is True


# =========================================================================
# 15. _is_selector_focused stealth
# =========================================================================

class TestIsSelectorFocusedStealth:
    """Tests for stealth-aware _is_selector_focused."""

    def test_uses_isolated_world_when_available(self):
        from cloakbrowser.human import _is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(return_value=True)

        page = MagicMock()
        page._stealth_world = mock_world

        result = _is_selector_focused(page, "#field")
        assert result is True
        mock_world.evaluate.assert_called_once()
        page.evaluate.assert_not_called()

    def test_returns_false_when_not_focused(self):
        from cloakbrowser.human import _is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(return_value=False)

        page = MagicMock()
        page._stealth_world = mock_world

        result = _is_selector_focused(page, "#field")
        assert result is False

    def test_falls_back_when_no_stealth_world(self):
        from cloakbrowser.human import _is_selector_focused

        page = MagicMock()
        page._stealth_world = None
        page.evaluate = MagicMock(return_value=True)

        result = _is_selector_focused(page, "#f")
        assert result is True
        page.evaluate.assert_called_once()

    def test_falls_back_when_isolated_world_raises(self):
        from cloakbrowser.human import _is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(side_effect=Exception("CDP fail"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = MagicMock(return_value=False)

        result = _is_selector_focused(page, "#f")
        assert result is False

    def test_returns_false_when_both_paths_fail(self):
        from cloakbrowser.human import _is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = MagicMock(side_effect=Exception("gone"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = MagicMock(side_effect=Exception("also gone"))

        result = _is_selector_focused(page, "#f")
        assert result is False


# =========================================================================
# 15b. _async_is_selector_focused stealth
# =========================================================================

class TestAsyncIsSelectorFocusedStealth:

    @pytest.mark.asyncio
    async def test_uses_isolated_world_when_available(self):
        from cloakbrowser.human import _async_is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = AsyncMock(return_value=True)

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = AsyncMock()

        result = await _async_is_selector_focused(page, "#field")
        assert result is True
        mock_world.evaluate.assert_called_once()
        page.evaluate.assert_not_called()

    @pytest.mark.asyncio
    async def test_falls_back_when_isolated_world_raises(self):
        from cloakbrowser.human import _async_is_selector_focused

        mock_world = MagicMock()
        mock_world.evaluate = AsyncMock(side_effect=Exception("dead"))

        page = MagicMock()
        page._stealth_world = mock_world
        page.evaluate = AsyncMock(return_value=False)

        result = await _async_is_selector_focused(page, "#f")
        assert result is False


# =========================================================================
# 16. Shift symbol CDP stealth path (sync)
# =========================================================================

class TestShiftSymbolCDPSync:
    """Tests for _type_shift_symbol using CDP Input.dispatchKeyEvent."""

    def test_shift_symbol_codes_completeness(self):
        """Every SHIFT_SYMBOL must have an entry in _SHIFT_SYMBOL_CODES and _SHIFT_SYMBOL_KEYCODES."""
        from cloakbrowser.human.keyboard import SHIFT_SYMBOLS, _SHIFT_SYMBOL_CODES, _SHIFT_SYMBOL_KEYCODES

        for sym in SHIFT_SYMBOLS:
            assert sym in _SHIFT_SYMBOL_CODES, f"Missing code for '{sym}'"
            assert sym in _SHIFT_SYMBOL_KEYCODES, f"Missing keycode for '{sym}'"

    def test_cdp_path_sends_key_down_and_key_up(self):
        """When cdp_session is provided, _type_shift_symbol sends keyDown + keyUp via CDP."""
        from cloakbrowser.human.keyboard import _type_shift_symbol
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_CODES, _SHIFT_SYMBOL_KEYCODES

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()

        cdp_session = MagicMock()
        cdp_calls = []
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        _type_shift_symbol(page, raw, "!", cfg, cdp_session=cdp_session)

        # Should have called raw.down("Shift") and raw.up("Shift")
        raw.down.assert_any_call("Shift")
        raw.up.assert_any_call("Shift")

        # Should have called CDP Input.dispatchKeyEvent (keyDown + keyUp)
        assert len(cdp_calls) == 2
        assert cdp_calls[0][0] == "Input.dispatchKeyEvent"
        assert cdp_calls[0][1]["type"] == "keyDown"
        assert cdp_calls[0][1]["key"] == "!"
        assert cdp_calls[0][1]["code"] == _SHIFT_SYMBOL_CODES["!"]
        assert cdp_calls[0][1]["windowsVirtualKeyCode"] == _SHIFT_SYMBOL_KEYCODES["!"]
        assert cdp_calls[0][1]["modifiers"] == 8  # Shift flag
        assert cdp_calls[0][1]["text"] == "!"

        assert cdp_calls[1][0] == "Input.dispatchKeyEvent"
        assert cdp_calls[1][1]["type"] == "keyUp"
        assert cdp_calls[1][1]["key"] == "!"

    def test_cdp_path_does_not_call_page_evaluate(self):
        """When cdp_session is provided, page.evaluate must NOT be called."""
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()
        cdp_session = MagicMock()

        _type_shift_symbol(page, raw, "@", cfg, cdp_session=cdp_session)

        page.evaluate.assert_not_called()

    def test_cdp_path_does_not_call_insert_text(self):
        """CDP path inserts characters via keyDown text field, not insertText."""
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()
        cdp_session = MagicMock()

        _type_shift_symbol(page, raw, "#", cfg, cdp_session=cdp_session)

        raw.insert_text.assert_not_called()

    def test_fallback_path_uses_page_evaluate(self):
        """When no cdp_session, falls back to page.evaluate (detectable path)."""
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()

        _type_shift_symbol(page, raw, "$", cfg, cdp_session=None)

        page.evaluate.assert_called_once()
        raw.insert_text.assert_called_once_with("$")
        raw.down.assert_any_call("Shift")
        raw.up.assert_any_call("Shift")

    def test_cdp_path_all_shift_symbols(self):
        """All 21 shift symbols should work via CDP path without error."""
        from cloakbrowser.human.keyboard import _type_shift_symbol, SHIFT_SYMBOLS

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()
        cdp_session = MagicMock()

        for sym in SHIFT_SYMBOLS:
            page.reset_mock()
            raw.reset_mock()
            cdp_session.reset_mock()

            _type_shift_symbol(page, raw, sym, cfg, cdp_session=cdp_session)

            page.evaluate.assert_not_called()
            assert cdp_session.send.call_count == 2, f"Expected 2 CDP calls for '{sym}'"

    def test_cdp_keydown_has_text_field(self):
        """keyDown event must include 'text' and 'unmodifiedText' for char insertion."""
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        _type_shift_symbol(page, raw, "%", cfg, cdp_session=cdp_session)

        keydown = cdp_calls[0][1]
        assert keydown["text"] == "%"
        assert keydown["unmodifiedText"] == "%"

    def test_cdp_keyup_has_no_text_field(self):
        """keyUp event should NOT have 'text' or 'unmodifiedText' fields."""
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        _type_shift_symbol(page, raw, "^", cfg, cdp_session=cdp_session)

        keyup = cdp_calls[1][1]
        assert "text" not in keyup
        assert "unmodifiedText" not in keyup


# =========================================================================
# 16b. human_type end-to-end: shift symbols route via CDP
# =========================================================================

class TestHumanTypeShiftCDP:
    """Integration: human_type() routes shift symbols through CDP path."""

    def test_shift_symbol_in_text_uses_cdp(self):
        from cloakbrowser.human.keyboard import human_type

        cfg = _cfg(mistype_chance=0)
        page = MagicMock()
        raw = MagicMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        human_type(page, raw, "a!", cfg, cdp_session=cdp_session)

        # 'a' — normal char: raw.down('a'), raw.up('a')
        raw.down.assert_any_call("a")
        raw.up.assert_any_call("a")

        # '!' — shift symbol via CDP
        page.evaluate.assert_not_called()
        cdp_key_events = [(m, p) for m, p in cdp_calls if m == "Input.dispatchKeyEvent"]
        assert len(cdp_key_events) == 2  # keyDown + keyUp for '!'

    def test_text_without_shift_symbols_no_cdp(self):
        from cloakbrowser.human.keyboard import human_type

        cfg = _cfg(mistype_chance=0)
        page = MagicMock()
        raw = MagicMock()
        cdp_session = MagicMock()

        human_type(page, raw, "hello", cfg, cdp_session=cdp_session)

        cdp_session.send.assert_not_called()
        page.evaluate.assert_not_called()

    def test_multiple_shift_symbols_all_use_cdp(self):
        from cloakbrowser.human.keyboard import human_type

        cfg = _cfg(mistype_chance=0)
        page = MagicMock()
        raw = MagicMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        human_type(page, raw, "!@#", cfg, cdp_session=cdp_session)

        page.evaluate.assert_not_called()
        # 3 symbols × 2 events = 6 CDP calls
        assert len(cdp_calls) == 6

    def test_mixed_text_no_evaluate_leak(self):
        """'Hello World!' — the '!' must go via CDP, uppercase via Shift+raw, lowercase via raw."""
        from cloakbrowser.human.keyboard import human_type

        cfg = _cfg(mistype_chance=0)
        page = MagicMock()
        raw = MagicMock()
        cdp_session = MagicMock()

        human_type(page, raw, "Hello World!", cfg, cdp_session=cdp_session)

        page.evaluate.assert_not_called()


# =========================================================================
# 17. Shift symbol CDP stealth path (async)
# =========================================================================

class TestShiftSymbolCDPAsync:

    @pytest.mark.asyncio
    async def test_cdp_path_sends_events_async(self):
        from cloakbrowser.human.keyboard_async import _type_shift_symbol
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_CODES, _SHIFT_SYMBOL_KEYCODES

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()
        raw.down = AsyncMock()
        raw.up = AsyncMock()
        raw.insert_text = AsyncMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = AsyncMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        await _type_shift_symbol(page, raw, "@", cfg, cdp_session=cdp_session)

        raw.down.assert_any_call("Shift")
        raw.up.assert_any_call("Shift")

        assert len(cdp_calls) == 2
        assert cdp_calls[0][1]["type"] == "keyDown"
        assert cdp_calls[0][1]["key"] == "@"
        assert cdp_calls[1][1]["type"] == "keyUp"

    @pytest.mark.asyncio
    async def test_cdp_path_no_evaluate_async(self):
        from cloakbrowser.human.keyboard_async import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        page.evaluate = AsyncMock()
        raw = MagicMock()
        raw.down = AsyncMock()
        raw.up = AsyncMock()
        cdp_session = MagicMock()
        cdp_session.send = AsyncMock()

        await _type_shift_symbol(page, raw, "#", cfg, cdp_session=cdp_session)

        page.evaluate.assert_not_called()

    @pytest.mark.asyncio
    async def test_fallback_path_async(self):
        from cloakbrowser.human.keyboard_async import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        page.evaluate = AsyncMock()
        raw = MagicMock()
        raw.down = AsyncMock()
        raw.up = AsyncMock()
        raw.insert_text = AsyncMock()

        await _type_shift_symbol(page, raw, "$", cfg, cdp_session=None)

        page.evaluate.assert_called_once()
        raw.insert_text.assert_called_once_with("$")

    @pytest.mark.asyncio
    async def test_async_human_type_routes_via_cdp(self):
        from cloakbrowser.human.keyboard_async import async_human_type

        cfg = _cfg(mistype_chance=0)
        page = MagicMock()
        page.evaluate = AsyncMock()
        raw = MagicMock()
        raw.down = AsyncMock()
        raw.up = AsyncMock()
        raw.insert_text = AsyncMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = AsyncMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        await async_human_type(page, raw, "test!", cfg, cdp_session=cdp_session)

        page.evaluate.assert_not_called()
        # Only '!' should trigger CDP calls (2 events)
        assert len(cdp_calls) == 2


# =========================================================================
# 18. Navigation invalidation
# =========================================================================

class TestNavigationInvalidation:
    """Tests that goto invalidates the isolated world context."""

    def test_goto_invalidates_stealth_world_sync(self):
        from cloakbrowser.human import patch_page, _CursorState
        from cloakbrowser.human.config import resolve_config

        cfg = resolve_config("default")
        cursor = _CursorState()

        page = MagicMock()
        page.mouse = MagicMock()
        page.keyboard = MagicMock()
        page.context = MagicMock()
        page.main_frame = MagicMock(return_value=MagicMock(child_frames=[]))
        page.frames = MagicMock(return_value=[])

        # Make CDP session creation succeed
        mock_cdp = MagicMock()
        mock_cdp.send = MagicMock(side_effect=lambda m, p=None: {
            "Page.getFrameTree": {"frameTree": {"frame": {"id": "F1"}}},
            "Page.createIsolatedWorld": {"executionContextId": 500},
        }.get(m, {}))
        page.context.new_cdp_session = MagicMock(return_value=mock_cdp)

        patch_page(page, cfg, cursor)

        # Get reference to stealth world
        stealth_world = page._stealth_world
        assert stealth_world is not None

        # Warm up the context_id
        stealth_world._context_id = 500

        # Call patched goto
        orig_goto = page._original.goto
        orig_goto.return_value = MagicMock()  # response object
        page.goto("https://example.com")

        # After goto, context_id should be invalidated
        assert stealth_world._context_id is None


# =========================================================================
# 19. patch_page stealth infrastructure wiring
# =========================================================================

class TestPatchPageStealthWiring:
    """Tests that patch_page creates and attaches stealth infrastructure."""

    def _make_mock_page(self):
        page = MagicMock()
        page.mouse = MagicMock()
        page.keyboard = MagicMock()
        page.context = MagicMock()
        page.main_frame = MagicMock(return_value=MagicMock(child_frames=[]))
        page.frames = MagicMock(return_value=[])

        mock_cdp = MagicMock()
        mock_cdp.send = MagicMock(return_value={})
        page.context.new_cdp_session = MagicMock(return_value=mock_cdp)

        return page, mock_cdp

    def test_patch_page_sets_stealth_world(self):
        from cloakbrowser.human import patch_page, _CursorState, _SyncIsolatedWorld

        page, cdp = self._make_mock_page()
        cfg = _cfg()
        cursor = _CursorState()

        patch_page(page, cfg, cursor)

        assert hasattr(page, '_stealth_world')
        assert isinstance(page._stealth_world, _SyncIsolatedWorld)

    def test_patch_page_sets_original(self):
        from cloakbrowser.human import patch_page, _CursorState

        page, _ = self._make_mock_page()
        cfg = _cfg()
        cursor = _CursorState()

        patch_page(page, cfg, cursor)

        assert hasattr(page, '_original')
        assert hasattr(page, '_human_cfg')
        assert page._human_cfg is cfg

    def test_stealth_world_none_when_cdp_fails(self):
        """If CDP session creation fails, stealth_world should be None."""
        from cloakbrowser.human import patch_page, _CursorState

        page = MagicMock()
        page.mouse = MagicMock()
        page.keyboard = MagicMock()
        page.context = MagicMock()
        page.context.new_cdp_session = MagicMock(side_effect=Exception("no CDP"))
        page.main_frame = MagicMock(return_value=MagicMock(child_frames=[]))
        page.frames = MagicMock(return_value=[])

        cfg = _cfg()
        cursor = _CursorState()

        patch_page(page, cfg, cursor)

        assert page._stealth_world is None

    def test_click_passes_through_stealth_dom_query(self):
        """Verify that patched click() calls _is_input_element which uses _stealth_world.

        We mock scroll_to_element to bypass viewport/scrolling complexity,
        then intercept CDP send() to verify Runtime.evaluate is called in
        the isolated world for the isInputElement DOM query.
        """
        from cloakbrowser.human import patch_page, _CursorState

        # Track all cdp.send() calls
        runtime_eval_expressions: list[str] = []

        def tracking_cdp_send(method, params=None):
            if method == "Page.getFrameTree":
                return {"frameTree": {"frame": {"id": "F1"}}}
            if method == "Page.createIsolatedWorld":
                return {"executionContextId": 300}
            if method == "Runtime.evaluate":
                runtime_eval_expressions.append(params.get("expression", ""))
                return {"result": {"value": False}}  # not an input element
            return {}

        page, _ = self._make_mock_page()
        cfg = _cfg(idle_between_actions=False)
        cursor = _CursorState()

        # Wire up the tracking CDP mock
        mock_cdp = MagicMock()
        mock_cdp.send = MagicMock(side_effect=tracking_cdp_send)
        page.context.new_cdp_session = MagicMock(return_value=mock_cdp)

        patch_page(page, cfg, cursor)

        stealth_world = page._stealth_world
        assert stealth_world is not None

        # Mock scroll_to_element to bypass all scrolling logic and return
        # a bounding box immediately — this lets click() proceed to
        # _is_input_element without getting stuck in viewport checks.
        fake_box = {"x": 100, "y": 200, "width": 200, "height": 30}
        with mock_patch(
            "cloakbrowser.human.scroll_to_element",
            return_value=(fake_box, 200.0, 215.0),
        ):
            try:
                page.click("#btn")
            except Exception:
                pass

        # The isolated world should have been used for the isInputElement check.
        # Runtime.evaluate calls from the isolated world contain querySelector + tagName.
        assert len(runtime_eval_expressions) >= 1
        assert any("tagName" in expr or "querySelector" in expr for expr in runtime_eval_expressions)


# =========================================================================
# 20. SHIFT_SYMBOL_CODES / SHIFT_SYMBOL_KEYCODES correctness
# =========================================================================

class TestShiftSymbolMaps:
    """Verify the code/keycode mappings are correct."""

    def test_all_codes_are_valid_key_codes(self):
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_CODES

        valid_prefixes = ("Digit", "Minus", "Equal", "Bracket", "Backslash",
                          "Semicolon", "Quote", "Comma", "Period", "Slash", "Backquote")
        for sym, code in _SHIFT_SYMBOL_CODES.items():
            assert any(code.startswith(p) for p in valid_prefixes), \
                f"Invalid code '{code}' for symbol '{sym}'"

    def test_all_keycodes_are_positive_integers(self):
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_KEYCODES

        for sym, keycode in _SHIFT_SYMBOL_KEYCODES.items():
            assert isinstance(keycode, int), f"Keycode for '{sym}' is not int"
            assert keycode > 0, f"Keycode for '{sym}' is not positive"

    def test_digit_symbols_have_correct_keycodes(self):
        """!@#$%^&*() should map to keycodes 49-57, 48 (digits 1-9, 0)."""
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_KEYCODES

        digit_symbols = ['!', '@', '#', '$', '%', '^', '&', '*', '(', ')']
        expected_keycodes = [49, 50, 51, 52, 53, 54, 55, 56, 57, 48]

        for sym, expected in zip(digit_symbols, expected_keycodes):
            assert _SHIFT_SYMBOL_KEYCODES[sym] == expected, \
                f"Keycode for '{sym}': expected {expected}, got {_SHIFT_SYMBOL_KEYCODES[sym]}"

    def test_codes_and_keycodes_have_same_keys(self):
        from cloakbrowser.human.keyboard import _SHIFT_SYMBOL_CODES, _SHIFT_SYMBOL_KEYCODES
        assert set(_SHIFT_SYMBOL_CODES.keys()) == set(_SHIFT_SYMBOL_KEYCODES.keys())

    def test_shift_symbols_set_matches_codes_keys(self):
        from cloakbrowser.human.keyboard import SHIFT_SYMBOLS, _SHIFT_SYMBOL_CODES
        assert SHIFT_SYMBOLS == frozenset(_SHIFT_SYMBOL_CODES.keys())


# =========================================================================
# 21. CDP modifiers flag
# =========================================================================

class TestCDPModifiers:
    """Ensure the shift modifier flag is always 8 (correct CDP constant)."""

    def test_keydown_modifier_is_8(self):
        from cloakbrowser.human.keyboard import _type_shift_symbol

        cfg = _cfg()
        page = MagicMock()
        raw = MagicMock()

        cdp_calls = []
        cdp_session = MagicMock()
        cdp_session.send = MagicMock(side_effect=lambda m, p: cdp_calls.append((m, p)))

        _type_shift_symbol(page, raw, "!", cfg, cdp_session=cdp_session)

        for method, params in cdp_calls:
            assert params["modifiers"] == 8


# =========================================================================
# 22. Isolated world expression injection safety
# =========================================================================

class TestIsolatedWorldSafety:
    """Ensure selectors are properly escaped in JS expressions."""

    def test_selector_with_quotes_is_escaped(self):
        from cloakbrowser.human import _is_input_element

        mock_world = MagicMock()
        calls = []
        mock_world.evaluate = MagicMock(side_effect=lambda expr: calls.append(expr) or False)

        page = MagicMock()
        page._stealth_world = mock_world

        dangerous_selector = 'input[data-x="\\");alert(1)//"]'
        _is_input_element(page, dangerous_selector)

        assert len(calls) == 1
        # The expression should contain JSON-escaped selector
        escaped = json.dumps(dangerous_selector)
        assert escaped in calls[0]

    def test_selector_with_backticks_escaped(self):
        from cloakbrowser.human import _is_selector_focused

        mock_world = MagicMock()
        calls = []
        mock_world.evaluate = MagicMock(side_effect=lambda expr: calls.append(expr) or False)

        page = MagicMock()
        page._stealth_world = mock_world

        _is_selector_focused(page, "div[class=`test`]")

        assert len(calls) == 1
        assert json.dumps("div[class=`test`]") in calls[0]


# =========================================================================
# SLOW TESTS — require browser (skipped in CI unless pytest -m slow)
#
# Pattern: all browser tests use launch_async + @pytest.mark.asyncio to
# avoid Playwright Sync API / event loop conflicts with pytest-asyncio.
# =========================================================================


def _launch_kwargs(**extra):
    """Build launch() kwargs, omitting proxy when empty."""
    kw = {"humanize": True, "headless": False}
    kw.update(extra)
    if not kw.get("proxy"):
        kw.pop("proxy", None)
    return kw


@pytest.mark.slow
class TestStealthBrowserReal:
    """Real-browser tests that verify the stealth fixes from #110.

    All tests use launch_async + @pytest.mark.asyncio to be compatible
    with pytest-asyncio mode=AUTO.
    """

    @pytest.mark.asyncio
    async def test_stealth_world_attached_to_page(self):
        """Verify stealth infrastructure is wired up on real browser page."""
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        assert hasattr(page, '_stealth_world'), "_stealth_world not attached"
        assert page._stealth_world is not None, "_stealth_world is None"
        assert hasattr(page, '_original'), "_original not attached"
        assert hasattr(page, '_human_cfg'), "_human_cfg not attached"

        await browser.close()

    @pytest.mark.asyncio
    async def test_no_evaluate_leak_on_click(self):
        """click() on input/button must NOT trigger page.evaluate (querySelector leak).

        We inject a detection script that catches querySelector calls from
        evaluate context (Error.stack ':302:' pattern). If humanize is using
        the stealth isolated world, these should NOT fire.
        """
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        # Inject detection hook directly
        await page.evaluate("""
            () => {
                window.__evaluateDetections = [];
                const origQS = document.querySelector.bind(document);
                document.querySelector = function(sel) {
                    try { throw new Error(); } catch (e) {
                        if (e.stack && e.stack.includes(':302:')) {
                            window.__evaluateDetections.push(sel);
                        }
                    }
                    return origQS(sel);
                };
                return true;
            }
        """)

        # Click on the search input — this triggers isInputElement check
        await page.locator('#searchInput').click()
        await asyncio.sleep(0.5)

        # Check if any querySelector calls came from evaluate context
        leaks = await page.evaluate('() => window.__evaluateDetections || []')
        assert len(leaks) == 0, f"Evaluate leak detected: {leaks}"

        await browser.close()

    @pytest.mark.asyncio
    async def test_shift_symbols_produce_trusted_events(self):
        """Shift symbols (!@#) must produce isTrusted=true keyboard events.

        Before #110 fix, these used page.evaluate to dispatch synthetic
        KeyboardEvent with isTrusted=false.
        """
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        # Inject isTrusted tracker on the search input
        await page.evaluate("""
            () => {
                window.__untrustedKeys = [];
                window.__trustedKeys = [];
                const input = document.querySelector('#searchInput');
                if (input) {
                    input.addEventListener('keydown', (e) => {
                        if (!e.isTrusted) {
                            window.__untrustedKeys.push(e.key);
                        } else {
                            window.__trustedKeys.push(e.key);
                        }
                    }, true);
                }
            }
        """)

        # Click into search, then type text with shift symbols
        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)
        await page.keyboard.type('test!')
        await asyncio.sleep(0.5)

        untrusted = await page.evaluate('() => window.__untrustedKeys || []')
        trusted = await page.evaluate('() => window.__trustedKeys || []')

        # '!' should appear in trusted, NOT in untrusted
        assert '!' not in untrusted, f"Untrusted shift symbol detected: {untrusted}"
        assert '!' in trusted, f"'!' not in trusted keys: {trusted}"

        await browser.close()

    @pytest.mark.asyncio
    async def test_stealth_world_survives_navigation(self):
        """After page.goto(), the isolated world must be invalidated and
        re-created transparently — subsequent click/type should still work."""
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        assert hasattr(page, '_stealth_world')

        # First navigation
        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)
        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)

        # Second navigation — triggers invalidate()
        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        # This should still work (isolated world auto-recreated)
        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)
        await page.locator('#searchInput').type('after navigation')
        await asyncio.sleep(0.5)

        val = await page.locator('#searchInput').input_value()
        assert 'after navigation' in val

        await browser.close()

    @pytest.mark.asyncio
    async def test_no_evaluate_leak_on_type_shift_symbols(self):
        """Typing '!@#$%' must NOT produce any page.evaluate calls
        (Error.stack ':302:' detection)."""
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        # Inject detection
        await page.evaluate("""
            () => {
                window.__evalLeaks = [];
                const origQS = document.querySelector.bind(document);
                document.querySelector = function(sel) {
                    try { throw new Error(); } catch (e) {
                        if (e.stack && e.stack.includes(':302:')) {
                            window.__evalLeaks.push({sel, stack: e.stack.substring(0, 200)});
                        }
                    }
                    return origQS(sel);
                };
            }
        """)

        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)
        await page.keyboard.type('Hello!@#')
        await asyncio.sleep(0.5)

        leaks = await page.evaluate('() => window.__evalLeaks || []')
        assert len(leaks) == 0, (
            f"Evaluate stack leak during shift symbol typing: {leaks}"
        )

        await browser.close()

    @pytest.mark.asyncio
    async def test_form_fill_no_untrusted_events(self):
        """Full form fill (email + password with shift symbols) — all events
        must be isTrusted=true, no evaluate leaks."""
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs(headless=False, geoip=True))
        page = await browser.new_page()

        await page.goto(
            'https://deviceandbrowserinfo.com/are_you_a_bot_interactions',
            wait_until='domcontentloaded',
        )
        await asyncio.sleep(3)

        # Inject both detection hooks
        await page.evaluate("""
            () => {
                window.__evalLeaks = [];
                window.__untrustedKeys = [];

                // Track querySelector from evaluate context
                const origQS = document.querySelector.bind(document);
                document.querySelector = function(sel) {
                    try { throw new Error(); } catch (e) {
                        if (e.stack && e.stack.includes(':302:')) {
                            window.__evalLeaks.push(sel);
                        }
                    }
                    return origQS(sel);
                };

                // Track untrusted keyboard events
                document.addEventListener('keydown', (e) => {
                    if (!e.isTrusted) {
                        window.__untrustedKeys.push(e.key);
                    }
                }, true);
            }
        """)

        # Fill the form with shift symbols in the password
        await page.locator('#email').click()
        await asyncio.sleep(0.3)
        await page.locator('#email').fill('test@example.com')
        await asyncio.sleep(0.5)
        await page.locator('#password').click()
        await asyncio.sleep(0.3)
        await page.locator('#password').fill('SecurePass!@#123')
        await asyncio.sleep(0.5)

        eval_leaks = await page.evaluate('() => window.__evalLeaks || []')
        untrusted = await page.evaluate('() => window.__untrustedKeys || []')

        assert len(eval_leaks) == 0, f"Evaluate leaks: {eval_leaks}"
        assert len(untrusted) == 0, f"Untrusted key events: {untrusted}"

        await page.locator('button[type="submit"]').click()
        await asyncio.sleep(5)

        body = await page.locator('body').text_content()
        assert '"superHumanSpeed": true' not in body
        assert '"suspiciousClientSideBehavior": true' not in body

        await browser.close()

    @pytest.mark.asyncio
    async def test_async_no_evaluate_leak(self):
        """launch_async variant — click + shift symbols, zero evaluate leaks."""
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        assert hasattr(page, '_stealth_world')
        assert page._stealth_world is not None

        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        # Inject detection
        await page.evaluate("""
            () => {
                window.__evalLeaks = [];
                const origQS = document.querySelector.bind(document);
                document.querySelector = function(sel) {
                    try { throw new Error(); } catch (e) {
                        if (e.stack && e.stack.includes(':302:')) {
                            window.__evalLeaks.push(sel);
                        }
                    }
                    return origQS(sel);
                };
            }
        """)

        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)
        await page.keyboard.type('async!')
        await asyncio.sleep(0.5)

        leaks = await page.evaluate('() => window.__evalLeaks || []')
        assert len(leaks) == 0, f"Async evaluate leak: {leaks}"

        await browser.close()

    @pytest.mark.asyncio
    async def test_async_shift_symbols_trusted(self):
        """launch_async variant — shift symbols produce isTrusted=true."""
        import asyncio
        from cloakbrowser import launch_async
        browser = await launch_async(**_launch_kwargs())
        page = await browser.new_page()

        await page.goto('https://www.wikipedia.org', wait_until='domcontentloaded')
        await asyncio.sleep(1)

        await page.evaluate("""
            () => {
                window.__untrusted = [];
                const input = document.querySelector('#searchInput');
                if (input) {
                    input.addEventListener('keydown', (e) => {
                        if (!e.isTrusted) window.__untrusted.push(e.key);
                    }, true);
                }
            }
        """)

        await page.locator('#searchInput').click()
        await asyncio.sleep(0.3)
        await page.keyboard.type('Hello!@#')
        await asyncio.sleep(0.5)

        untrusted = await page.evaluate('() => window.__untrusted || []')
        assert len(untrusted) == 0, f"Async untrusted keys: {untrusted}"

        await browser.close()


# =========================================================================
# Direct runner
# =========================================================================

if __name__ == "__main__":
    sys.exit(pytest.main([__file__, "-v", "--tb=short", "-x"]))