"""
Pytest configuration for browser-use CI tests.

Sets up environment variables to ensure tests never connect to production services.
"""

import os
import tempfile
from unittest.mock import AsyncMock, MagicMock

import pytest
from dotenv import load_dotenv
from langchain_core.language_models import BaseChatModel
from langchain_core.messages import AIMessage
from pytest_httpserver import HTTPServer

# Load environment variables before any imports
load_dotenv()


# Skip LLM API key verification for tests
os.environ['SKIP_LLM_API_KEY_VERIFICATION'] = 'true'

from bubus import BaseEvent

from browser_use import Agent
from browser_use.browser import BrowserProfile, BrowserSession
from browser_use.sync.service import CloudSync


@pytest.fixture(autouse=True)
def setup_test_environment():
	"""
	Automatically set up test environment for all tests.
	"""

	# Create a temporary directory for test config
	config_dir = tempfile.mkdtemp(prefix='browseruse_tests_')

	original_env = {}
	test_env_vars = {
		'SKIP_LLM_API_KEY_VERIFICATION': 'true',
		'ANONYMIZED_TELEMETRY': 'false',
		'BROWSER_USE_CLOUD_SYNC': 'true',
		'BROWSER_USE_CLOUD_URL': 'http://placeholder-will-be-replaced-by-specific-test-fixtures',
		'BROWSER_USE_CLOUD_UI_URL': 'http://placeholder-will-be-replaced-by-specific-test-fixtures',
		'BROWSER_USE_CONFIG_DIR': config_dir,
	}

	for key, value in test_env_vars.items():
		original_env[key] = os.environ.get(key)
		os.environ[key] = value

	yield

	# Restore original environment
	for key, value in original_env.items():
		if value is None:
			os.environ.pop(key, None)
		else:
			os.environ[key] = value


# not a fixture, mock_llm() provides this in a fixture below, this is a helper so that it can accept args
def create_mock_llm(actions=None):
	"""Create a mock LLM that returns specified actions or a default done action.

	Args:
		actions: Optional list of JSON strings representing actions to return in sequence.
			If not provided, returns a single done action.
			After all actions are exhausted, returns a done action.

	Returns:
		Mock LLM that will return the actions in order, or just a done action if no actions provided.
	"""
	llm = AsyncMock(spec=BaseChatModel)
	llm.model_name = 'mock-llm'
	llm._verified_api_keys = True
	llm._verified_tool_calling_method = 'raw'
	# llm._verified_tool_calling_method = 'function_calling'

	# Default done action
	default_done_action = """
	{
		"thinking": "null",
		"evaluation_previous_goal": "Successfully completed the task",
		"memory": "Task completed",
		"next_goal": "Task completed",
		"action": [
			{
				"done": {
					"text": "Task completed successfully",
					"success": true
				}
			}
		]
	}
	"""

	if actions is None:
		# No actions provided, just return done action
		async def async_invoke(*args, **kwargs):
			return AIMessage(content=default_done_action)

		llm.invoke.return_value = AIMessage(content=default_done_action)
		llm.ainvoke.side_effect = async_invoke
	else:
		# Actions provided, return them in sequence with structured output support
		action_index = 0

		def get_next_action():
			nonlocal action_index
			if action_index < len(actions):
				action = actions[action_index]
				action_index += 1
				return action
			else:
				return default_done_action

		async def mock_ainvoke(*args, **kwargs):
			return AIMessage(content=get_next_action())

		def mock_invoke(*args, **kwargs):
			return AIMessage(content=get_next_action())

		llm.invoke.side_effect = mock_invoke
		llm.ainvoke.side_effect = mock_ainvoke

		# Mock the with_structured_output method to return parsed objects
		structured_llm = MagicMock()

		async def mock_structured_ainvoke(*args, **kwargs):
			# The agent will create its own AgentOutput and ActionModel classes
			# We return the raw response and let the agent parse it
			return {
				'raw': AIMessage(content=get_next_action()),
				'parsed': None,  # Let the agent parse it from the raw JSON
			}

		structured_llm.ainvoke = AsyncMock(side_effect=mock_structured_ainvoke)
		llm.with_structured_output = lambda *args, **kwargs: structured_llm

	return llm


@pytest.fixture(scope='module')
async def browser_session():
	"""Create a real browser session for testing"""
	session = BrowserSession(
		browser_profile=BrowserProfile(
			headless=True,
			user_data_dir=None,  # Use temporary directory
			keep_alive=True,
		)
	)
	await session.start()
	yield session
	await session.stop()


@pytest.fixture(scope='function')
def cloud_sync(httpserver: HTTPServer):
	"""
	Create a CloudSync instance configured for testing.

	This fixture creates a real CloudSync instance and sets up the test environment
	to use the httpserver URLs.
	"""

	# Set up test environment
	test_http_server_url = httpserver.url_for('')
	os.environ['BROWSER_USE_CLOUD_URL'] = test_http_server_url
	os.environ['BROWSER_USE_CLOUD_UI_URL'] = test_http_server_url
	os.environ['BROWSER_USE_CLOUD_SYNC'] = 'true'

	# Create CloudSync with test server URL
	cloud_sync = CloudSync(
		base_url=test_http_server_url,
		enable_auth=False,  # Disable auth for most tests, they can override this if needed
	)

	return cloud_sync


@pytest.fixture(scope='function')
def mock_llm():
	"""Create a mock LLM that just returns the done action if queried"""
	return create_mock_llm(actions=None)


@pytest.fixture(scope='function')
def agent_with_cloud(browser_session, mock_llm, cloud_sync):
	"""Create agent with cloud sync enabled (using real CloudSync)."""
	agent = Agent(
		task='Test task',
		llm=mock_llm,
		browser_session=browser_session,
		cloud_sync=cloud_sync,
	)
	return agent


@pytest.fixture(scope='function')
def event_collector():
	"""Helper to collect all events emitted during tests"""
	events = []
	event_order = []

	class EventCollector:
		def __init__(self):
			self.events = events
			self.event_order = event_order

		async def collect_event(self, event: BaseEvent):
			self.events.append(event)
			self.event_order.append(event.event_type)
			return 'collected'

		def get_events_by_type(self, event_type: str) -> list[BaseEvent]:
			return [e for e in self.events if e.event_type == event_type]

		def clear(self):
			self.events.clear()
			self.event_order.clear()

	return EventCollector()