"""
Shared fixtures for Demeter server tests.
"""

from __future__ import annotations

import asyncio
from typing import Any
from unittest.mock import AsyncMock, MagicMock

import pytest
from fastapi.testclient import TestClient

from app.config import DeviceConfig, DevicesConfig, ResourceConfig, Settings
from app.device_store import DeviceStore
from app.metrics import MetricsCollector


@pytest.fixture
def sample_devices_config() -> DevicesConfig:
    """A minimal device config for testing."""
    return DevicesConfig(
        devices=[
            DeviceConfig(
                id="test-plant-01",
                name="Test Plant",
                ip="192.168.1.100",
                port=5683,
                enabled=True,
                resources=[
                    ResourceConfig(uri="sensors/soil_moisture", name="Soil Moisture", type="periodic"),
                    ResourceConfig(uri="sensors/temperature", name="Temperature", type="periodic"),
                    ResourceConfig(uri="events/trigger", name="Trigger", type="event"),
                ],
            ),
            DeviceConfig(
                id="test-aquarium-01",
                name="Test Aquarium",
                ip="192.168.1.101",
                port=5683,
                enabled=True,
                resources=[
                    ResourceConfig(uri="sensors/temperature", name="Water Temp", type="periodic"),
                ],
            ),
            DeviceConfig(
                id="test-disabled",
                name="Disabled Device",
                ip="192.168.1.102",
                port=5683,
                enabled=False,
                resources=[],
            ),
        ]
    )


@pytest.fixture
def store(sample_devices_config: DevicesConfig) -> DeviceStore:
    """An initialized DeviceStore with sample devices."""
    return DeviceStore(sample_devices_config)


@pytest.fixture
def mock_observer() -> MagicMock:
    """A mock CoapObserverClient for API tests."""
    observer = MagicMock()
    observer.active_subscriptions = 3
    observer.subscription_status.return_value = {
        "test-plant-01/sensors/soil_moisture": "running",
        "test-plant-01/sensors/temperature": "running",
        "test-aquarium-01/sensors/temperature": "running",
    }
    observer.coap_get = AsyncMock(return_value={
        "device": "test-plant-01",
        "temperature": 24.5,
        "unit": "celsius",
    })
    observer.coap_put = AsyncMock(return_value={"interval": 10})
    return observer


@pytest.fixture
def app(store: DeviceStore, mock_observer: MagicMock):
    """FastAPI app with mocked dependencies."""
    from app.main import create_app

    test_app = create_app()
    test_app.state.store = store
    test_app.state.observer = mock_observer
    test_app.state.settings = Settings()
    return test_app


@pytest.fixture
def client(app) -> TestClient:
    """FastAPI TestClient (no lifespan — dependencies are mocked)."""
    return TestClient(app, raise_server_exceptions=False)