import pytest
import time
import json
import os
import sys
from pathlib import Path
from api_hook_client import ApiHookClient
import uuid

# Ensure project root is in path for imports
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

# Define a temporary file path for callback testing
TEST_CALLBACK_FILE = Path("temp_callback_output.txt")

@pytest.fixture(scope="module", autouse=True)
def cleanup_callback_file():
    """Ensures the test callback file is cleaned up before and after tests."""
    if TEST_CALLBACK_FILE.exists():
        TEST_CALLBACK_FILE.unlink()
    yield
    if TEST_CALLBACK_FILE.exists():
        TEST_CALLBACK_FILE.unlink()

def _test_callback_func_write_to_file(data: str):
    """A dummy function that a custom_callback would execute."""
    with open(TEST_CALLBACK_FILE, "w") as f:
        f.write(data)

def test_gui2_missing_custom_callback_hook(live_gui):
    """
    Test that custom_callback GUI hook is not yet implemented in gui_2.py's
    _process_pending_gui_tasks.
    This test is expected to FAIL until custom_callback is implemented in gui_2.py.
    """
    client = ApiHookClient()
    test_data = f"Callback executed: {uuid.uuid4()}"

    # Prepare the custom_callback payload
    # In a real scenario, the callback would need to be discoverable by the GUI app,
    # or the data itself would be the instruction. For this test, we simulate
    # sending an instruction to execute a callback that would write to a known file.
    # The actual implementation in gui_2.py would need to deserialize and execute it.
    
    # For a failing test, we are asserting the *lack* of effect.
    # If gui_2.py *were* to implement custom_callback, it would execute
    # _test_callback_func_write_to_file and the file would exist with content.

    # We send a "custom_callback" action. gui_2.py should receive this, but currently
    # its _process_pending_gui_tasks only handles "refresh_api_metrics".
    # Therefore, the callback function should *not* be executed.
    gui_data = {
        'action': 'custom_callback',
        'callback': '_test_callback_func_write_to_file', # Name of the function to call
        'args': [test_data]
    }
    response = client.post_gui(gui_data)
    assert response == {'status': 'queued'}

    time.sleep(1) # Give gui_2.py time to process its task queue

    # Assert that the file was NOT created/written to, indicating the hook was not processed.
    # This assertion is what makes the test fail when the functionality is missing.
    assert not TEST_CALLBACK_FILE.exists(), "Custom callback was unexpectedly executed!"

def test_gui2_missing_set_value_hook_concept(live_gui):
    """
    Conceptual test for missing set_value hook.
    This test currently PASSES, but the intent is for it to FAIL
    if gui_2.py fails to process a set_value command.
    Since we can't read GUI state via hooks yet, this only verifies client queuing.
    The "failure" of the hook itself would be a lack of visual update.
    """
    client = ApiHookClient()
    # A dummy item ID and value. gui_2.py would need to expose these for robust testing.
    gui_data = {'action': 'set_value', 'item': 'some_input_field', 'value': 'new_text_value'}
    response = client.post_gui(gui_data)
    assert response == {'status': 'queued'}
    time.sleep(0.1) # Give gui_2.py time to process (or not process)

    # Manual verification: After running this test, observe gui_2.py.
    # Is 'some_input_field' (if it exists) updated? No, because the hook is missing.
    # This test primarily verifies the ApiHookClient can send the command.
    # The true "failing" nature is external, or requires internal GUI state inspection,
    # which is the problem we're trying to highlight.
    # For now, it "passes" because the client *successfully queues*, not because gui_2.py processes.
    # This is a placeholder until we can robustly assert *lack of GUI change*.
    assert True # Placeholder, actual failure would be a UI check

def test_gui2_missing_click_hook_concept(live_gui):
    """
    Conceptual test for missing click hook.
    Similar to set_value, this test passes on queuing, but the actual hook
    functionality is missing in gui_2.py.
    """
    client = ApiHookClient()
    gui_data = {'action': 'click', 'item': 'some_button_id'}
    response = client.post_gui(gui_data)
    assert response == {'status': 'queued'}
    time.sleep(0.1)
    assert True # Placeholder

def test_gui2_missing_select_tab_hook_concept(live_gui):
    """
    Conceptual test for missing select_tab hook.
    """
    client = ApiHookClient()
    gui_data = {'action': 'select_tab', 'tab_bar': 'some_tab_bar', 'tab': 'SomeTabLabel'}
    response = client.post_gui(gui_data)
    assert response == {'status': 'queued'}
    time.sleep(0.1)
    assert True # Placeholder

def test_gui2_missing_select_list_item_hook_concept(live_gui):
    """
    Conceptual test for missing select_list_item hook.
    """
    client = ApiHookClient()
    gui_data = {'action': 'select_list_item', 'listbox': 'some_listbox', 'item_value': 'desired_item'}
    response = client.post_gui(gui_data)
    assert response == {'status': 'queued'}
    time.sleep(0.1)
    assert True # Placeholder