import pytest
import json
import subprocess
from unittest.mock import MagicMock, patch
from flask import Flask
from routes.bluetooth import bluetooth_bp, classify_bt_device, detect_tracker


@pytest.fixture(autouse=True)
def mock_app_module(mocker):
    mock_app = mocker.patch("routes.bluetooth.app_module")
    mock_app.bt_devices = {}
    mock_app.bt_beacons = {}
    mock_app.bt_services = {}
    mock_app.bt_queue = MagicMock()
    mock_app.bt_lock = MagicMock()
    mock_app.bt_process = None
    mock_app.bt_interface = "hci0"
    return mock_app


@pytest.fixture
def app():
    app = Flask(__name__)
    app.register_blueprint(bluetooth_bp)
    return app


@pytest.fixture
def client(app):
    return app.test_client()


def test_classify_bt_device_by_name():
    """Test classification based on common naming patterns."""
    assert classify_bt_device("Sony WH-1000XM4", None, None) == "audio"
    assert classify_bt_device("iPhone 15", None, None) == "phone"
    assert classify_bt_device("Garmin Fenix", None, None) == "wearable"
    assert classify_bt_device("Microsoft Mouse", None, None) == "input"
    assert classify_bt_device("AirTag", None, None) == "tracker"
    assert classify_bt_device("Generic Device", None, None) == "other"


def test_classify_bt_device_by_class():
    """Test classification based on Bluetooth Class of Device (CoD)."""
    assert classify_bt_device(None, 0x0100, None) == "computer"
    assert classify_bt_device(None, 0x0200, None) == "phone"
    assert classify_bt_device(None, 0x0400, None) == "audio"


def test_detect_tracker_by_mac():
    """Test tracker detection using MAC OUI prefixes."""
    # Assuming 'FF:FF:FF' is a mock prefix in patterns for testing
    with patch("routes.bluetooth.TILE_PREFIXES", ["FF:FF"]):
        result = detect_tracker("FF:FF:00:11:22:33", "Unknown")
        assert result["type"] == "tile"


def test_detect_tracker_by_name():
    """Test tracker detection using name strings."""
    result = detect_tracker("00:11:22:33:44:55", "My AirTag")
    assert result["type"] == "airtag"
    assert result["risk"] == "high"


# --- Route Tests ---


def test_get_interfaces_route(client, mocker):
    """Test the /interfaces endpoint with mocked system output."""
    mock_run = mocker.patch("subprocess.run")
    # Mocking hciconfig output for a Linux system
    mock_run.return_value = MagicMock(
        stdout="hci0:\tType: Primary  Bus: USB\n\tBD Address: 00:11:22:33:44:55  ACL MTU: 1021:8  SCO MTU: 64:1\n\tUP RUNNING\n"
    )
    mocker.patch("platform.system", return_value="Linux")
    mocker.patch("routes.bluetooth.check_tool", return_value=True)

    response = client.get("/bt/interfaces")
    data = response.get_json()

    assert response.status_code == 200
    assert data["interfaces"][0]["name"] == "hci0"
    assert data["interfaces"][0]["status"] == "up"
    assert data["tools"]["hcitool"] is True


def test_stop_scan_route(client, mock_app_module):
    """Test stopping a running scan process."""
    mock_process = MagicMock()
    mock_app_module.bt_process = mock_process

    response = client.post("/bt/scan/stop")

    assert response.status_code == 200
    assert response.get_json()["status"] == "stopped"
    mock_process.terminate.assert_called_once()


def test_enum_services_error_no_mac(client):
    """Test service enumeration validation."""
    response = client.post("/bt/enum", json={})
    assert response.status_code == 200
    assert response.get_json()["status"] == "error"


def test_get_devices_route(client, mock_app_module):
    """Test retrieving the current device list from memory."""
    mock_app_module.bt_devices = {"00:11:22:33:44:55": {"mac": "00:11:22:33:44:55", "name": "Test Device"}}

    response = client.get("/bt/devices")
    data = response.get_json()

    assert response.status_code == 200
    assert len(data["devices"]) == 1
    assert data["devices"][0]["name"] == "Test Device"


def test_reload_oui_route(client, mocker):
    """Test the OUI database reload functionality."""
    mocker.patch("routes.bluetooth.load_oui_database", return_value={"001122": "Test Corp"})

    response = client.post("/bt/reload-oui")
    data = response.get_json()

    assert response.status_code == 200
    assert data["status"] == "success"
    assert data["entries"] > 0