import pytest
from pathlib import Path
import json
from retoors.main import create_app
from retoors.services.config_service import ConfigService
from pytest_mock import MockerFixture  # Import MockerFixture
import datetime  # Import datetime
from aiohttp.test_utils import TestClient # Import TestClient
from aiohttp_session import setup as setup_session # Import setup_session
from aiohttp_session.cookie_storage import EncryptedCookieStorage # Import EncryptedCookieStorage
from retoors.helpers.env_manager import get_or_create_session_secret_key # Import get_or_create_session_secret_key
from retoors.middlewares import user_middleware, error_middleware # Import middlewares
from retoors.services.user_service import UserService # Import UserService
from retoors.routes import setup_routes # Import setup_routes
import aiohttp_jinja2 # Import aiohttp_jinja2
import jinja2 # Import jinja2
import aiohttp # Import aiohttp
from retoors.services.file_service import FileService # Import FileService


@pytest.fixture
def temp_user_files_dir(tmp_path):
    """Fixture to create a temporary directory for user files."""
    user_files_dir = tmp_path / "user_files"
    user_files_dir.mkdir()
    return user_files_dir

@pytest.fixture
def temp_users_json(tmp_path):
    """Fixture to create a temporary users.json file."""
    users_json_path = tmp_path / "users.json"
    initial_users_data = [
        {
            "email": "test@example.com",
            "full_name": "Test User",
            "password": "hashed_password",
            "storage_quota_gb": 10,
            "storage_used_gb": 0,
            "parent_email": None,
            "shared_items": {}
        },
        {
            "email": "child@example.com",
            "full_name": "Child User",
            "email": "child@example.com",
            "password": "hashed_password",
            "storage_quota_gb": 5,
            "storage_used_gb": 0,
            "parent_email": "test@example.com",
            "shared_items": {}
        }
    ]
    with open(users_json_path, "w") as f:
        json.dump(initial_users_data, f)
    return users_json_path

@pytest.fixture
def file_service_instance(temp_user_files_dir, temp_users_json):
    """Fixture to provide a FileService instance with temporary directories."""
    return FileService(temp_user_files_dir, temp_users_json)


@pytest.fixture
def create_app_instance():
    """Fixture to create a new aiohttp application instance."""
    return create_app()

@pytest.fixture
def create_test_app(mocker, temp_user_files_dir, temp_users_json, file_service_instance):
    """Fixture to create a test aiohttp application with mocked services."""
    from aiohttp import web

    app = web.Application()

    # Setup session for the test app
    project_root = Path(__file__).parent.parent
    env_file_path = project_root / ".env"
    secret_key = get_or_create_session_secret_key(env_file_path)
    setup_session(app, EncryptedCookieStorage(secret_key.decode("utf-8")))

    app.middlewares.append(error_middleware)
    app.middlewares.append(user_middleware)

    # Mock UserService
    mock_user_service = mocker.MagicMock(spec=UserService)

    # Mock scheduler
    mock_scheduler = mocker.MagicMock()
    mock_scheduler.spawn = mocker.AsyncMock()
    mock_scheduler.close = mocker.AsyncMock()

    app["user_service"] = mock_user_service
    app["file_service"] = file_service_instance
    app["scheduler"] = mock_scheduler

    # Setup Jinja2 for templates
    base_path = Path(__file__).parent.parent / "retoors"
    templates_path = base_path / "templates"
    aiohttp_jinja2.setup(app, loader=jinja2.FileSystemLoader(str(templates_path)))

    setup_routes(app)
    return app


@pytest.fixture(scope="function")
def mock_users_db_fixture():
    """
    Fixture to simulate a user database for dynamic mocking,
    reset for each test function.
    """
    return {
        "admin@example.com": {
            "full_name": "Admin User",
            "email": "admin@example.com",
            "password": "password",  # Store plain password for mock authentication
            "hashed_password": "hashed_password",  # For consistency with real service
            "storage_quota_gb": 100,
            "storage_used_gb": 10,
            "parent_email": None,
            "reset_token": None,
            "reset_token_expiry": None,
        },
        "child1@example.com": {
            "full_name": "Child User 1",
            "email": "child1@example.com",
            "password": "password",
            "hashed_password": "hashed_password",
            "storage_quota_gb": 50,
            "storage_used_gb": 5,
            "parent_email": "admin@example.com",
            "shared_items": {}
        }
    }


@pytest.fixture
async def client(
    aiohttp_client, mocker: MockerFixture, create_app_instance, mock_users_db_fixture
):
    app = create_app_instance  # Use the new fixture

    # Directly set app["scheduler"] to a mock object
    mock_scheduler_instance = mocker.MagicMock()
    mock_scheduler_instance.spawn = mocker.AsyncMock()
    mock_scheduler_instance.close = mocker.AsyncMock()  # Ensure close is awaitable
    app["scheduler"] = mock_scheduler_instance

    # Create temporary data files for testing
    base_path = Path(__file__).parent.parent
    data_path = base_path / "data"
    data_path.mkdir(exist_ok=True)

    users_file = data_path / "users.json"
    with open(users_file, "w") as f:
        json.dump([], f)

    config_file = data_path / "config.json"
    with open(config_file, "w") as f:
        json.dump({"price_per_gb": 0.0}, f)

    app["config_service"] = ConfigService(data_path / "config.json")

    client = await aiohttp_client(app)

    # Access the real UserService instance and mock its methods
    mock_user_service_instance = client.app["user_service"]

    # Use the mock_users_db_fixture
    mock_users_db = mock_users_db_fixture

    def mock_authenticate_user(email, password):
        user = mock_users_db.get(email)
        if user and user["password"] == password:
            return user
        return None

    def mock_get_user_by_email(email):
        return mock_users_db.get(email)

    def mock_create_user(full_name, email, password, parent_email=None):
        if email in mock_users_db:
            raise ValueError("User with this email already exists")
        new_user = {
            "full_name": full_name,
            "email": email,
            "password": password,
            "hashed_password": "hashed_password",
            "storage_quota_gb": 5,
            "storage_used_gb": 0,
            "parent_email": parent_email,
            "reset_token": None,
            "reset_token_expiry": None,
        }
        mock_users_db[email] = new_user
        return new_user

    def mock_reset_password(email, token, new_password):  # Added token argument
        user = mock_users_db.get(email)
        if user and user.get("reset_token") == token and user.get("reset_token_expiry"):
            expiry_time = datetime.datetime.fromisoformat(user["reset_token_expiry"])
            if expiry_time > datetime.datetime.now(datetime.timezone.utc):
                user["password"] = new_password
                user["hashed_password"] = "new_hashed_password"  # Simulate hashing
                user["reset_token"] = None
                user["reset_token_expiry"] = None
                return True
        return False

    def mock_generate_reset_token(email):
        user = mock_users_db.get(email)
        if user:
            # In a real scenario, this would generate a unique token and expiry
            user["reset_token"] = "test_token"
            user["reset_token_expiry"] = "2030-11-08T20:00:00Z"  # A future date
            return "test_token"
        return None

    def mock_validate_reset_token(email, token):
        if (
            token == "expiredtoken123"
        ):  # Explicitly handle the expired token from the test
            return False
        user = mock_users_db.get(email)
        if user and user.get("reset_token") == token and user.get("reset_token_expiry"):
            expiry_time = datetime.datetime.fromisoformat(
                user["reset_token_expiry"]
            )
            if expiry_time > datetime.datetime.now(datetime.timezone.utc):
                return True
        return False

    def mock_save_users():
        # This mock ensures that changes to user objects within tests are reflected in mock_users_db
        # In a real scenario, this would write to a file or database.
        pass  # The mock_users_db is already being modified directly by other mocks

    def mock_get_all_users():
        return list(mock_users_db.values())

    def mock_get_users_by_parent_email(parent_email):
        return [
            user
            for user in mock_users_db.values()
            if user.get("parent_email") == parent_email
        ]

    def mock_delete_user(email):
        if email in mock_users_db:
            del mock_users_db[email]
            return True
        return False

    def mock_delete_users_by_parent_email(parent_email):
        initial_count = len(mock_users_db)
        users_to_delete = [
            email
            for email, user in mock_users_db.items()
            if user.get("parent_email") == parent_email
        ]
        for email in users_to_delete:
            del mock_users_db[email]
        return initial_count - len(mock_users_db)

    mocker.patch.object(
        mock_user_service_instance,
        "authenticate_user",
        side_effect=mock_authenticate_user,
    )
    mocker.patch.object(
        mock_user_service_instance,
        "get_user_by_email",
        side_effect=mock_get_user_by_email,
    )
    mocker.patch.object(
        mock_user_service_instance, "create_user", side_effect=mock_create_user
    )
    mocker.patch.object(
        mock_user_service_instance, "get_all_users", side_effect=mock_get_all_users
    )
    mocker.patch.object(
        mock_user_service_instance, "update_user_quota", return_value=None
    )  # Keep as is for now
    mocker.patch.object(
        mock_user_service_instance, "delete_user", side_effect=mock_delete_user
    )
    mocker.patch.object(
        mock_user_service_instance,
        "get_users_by_parent_email",
        side_effect=mock_get_users_by_parent_email,
    )
    mocker.patch.object(
        mock_user_service_instance,
        "delete_users_by_parent_email",
        side_effect=mock_delete_users_by_parent_email,
    )
    mocker.patch.object(
        mock_user_service_instance,
        "generate_reset_token",
        side_effect=mock_generate_reset_token,
    )
    mocker.patch.object(
        mock_user_service_instance,
        "get_user_by_reset_token",
        side_effect=lambda token: next(
            (
                user
                for user in mock_users_db.values()
                if user.get("reset_token") == token
            ),
            None,
        ),
    )
    mocker.patch.object(
        mock_user_service_instance, "reset_password", side_effect=mock_reset_password
    )
    mocker.patch.object(
        mock_user_service_instance,
        "validate_reset_token",
        side_effect=mock_validate_reset_token,
    )
    mocker.patch.object(
        mock_user_service_instance, "_save_users", side_effect=mock_save_users
    )

    try:
        yield client
    finally:
        # Clean up temporary files
        users_file.unlink(missing_ok=True)
        config_file.unlink(missing_ok=True)  # Use missing_ok for robustness


@pytest.fixture
async def logged_in_client(aiohttp_client, create_test_app, mocker):
    """Fixture to provide an aiohttp client with a logged-in user."""
    app = create_test_app
    client = await aiohttp_client(app)

    user_service = app["user_service"]

    def mock_create_user(full_name, email, password, parent_email=None):
        return {
            "full_name": full_name,
            "email": email,
            "password": "hashed_password",
            "storage_quota_gb": 10,
            "storage_used_gb": 0,
            "parent_email": parent_email,
            "shared_items": {}
        }

    def mock_authenticate_user(email, password):
        return {
            "email": email,
            "full_name": "Test User",
            "is_admin": False,
            "storage_quota_gb": 10,
            "storage_used_gb": 0
        }

    def mock_get_user_by_email(email):
        return {
            "email": email,
            "full_name": "Test User",
            "is_admin": False,
            "storage_quota_gb": 10,
            "storage_used_gb": 0
        }

    mocker.patch.object(user_service, "create_user", side_effect=mock_create_user)
    mocker.patch.object(user_service, "authenticate_user", side_effect=mock_authenticate_user)
    mocker.patch.object(user_service, "get_user_by_email", side_effect=mock_get_user_by_email)

    await client.post(
        "/register",
        data={
            "full_name": "Test User",
            "email": "test@example.com",
            "password": "password",
            "confirm_password": "password",
        },
    )
    await client.post(
        "/login", data={"email": "test@example.com", "password": "password"}
    )

    return client

@pytest.fixture
async def logged_in_admin_client(aiohttp_client, create_test_app, mocker):
    """Fixture to provide an aiohttp client with a logged-in admin user."""
    app = create_test_app
    client = await aiohttp_client(app)

    user_service = app["user_service"]

    def mock_create_user(full_name, email, password, parent_email=None):
        return {
            "full_name": full_name,
            "email": email,
            "password": "hashed_password",
            "storage_quota_gb": 100,
            "storage_used_gb": 0,
            "parent_email": parent_email,
            "shared_items": {}
        }

    def mock_authenticate_user(email, password):
        return {
            "email": email,
            "full_name": "Admin User",
            "is_admin": True,
            "storage_quota_gb": 100,
            "storage_used_gb": 0
        }

    def mock_get_user_by_email(email):
        return {
            "email": email,
            "full_name": "Admin User",
            "is_admin": True,
            "storage_quota_gb": 100,
            "storage_used_gb": 0
        }

    mocker.patch.object(user_service, "create_user", side_effect=mock_create_user)
    mocker.patch.object(user_service, "authenticate_user", side_effect=mock_authenticate_user)
    mocker.patch.object(user_service, "get_user_by_email", side_effect=mock_get_user_by_email)

    await client.post(
        "/register",
        data={
            "full_name": "Admin User",
            "email": "admin@example.com",
            "password": "password",
            "confirm_password": "password",
        },
    )
    await client.post(
        "/login", data={"email": "admin@example.com", "password": "password"}
    )
    return client


@pytest.fixture
def mock_send_email(mocker: MockerFixture):
    """
    Fixture to mock the send_email function.
    This fixture will return the mock that was patched globally by the client fixture.
    """
    # Access the globally patched mock
    return mocker.patch("retoors.helpers.email_sender.send_email")