import pytest
from unittest.mock import AsyncMock, patch
from fastapi import HTTPException
from datetime import datetime, timezone, date, time
from uuid import uuid4
from app.services.appointment import (
    create_new_appointment,
    reschedule_appointment,
    cancel_appointment_service,
    get_appointment_details,
    get_appointments_by_customer_id,
)
from app.models.appointment import Appointment, AppointmentStatus, PaymentMode, PaymentStatus
from app.repositories.appointment import (
    create_appointment,
    update_appointment,
    cancel_appointment,
    get_appointment_by_id,
    fetch_appointments_from_db,
)

# Mock data
MOCK_APPOINTMENT_ID = str(uuid4())
MOCK_CUSTOMER_ID = str(uuid4())
MOCK_MERCHANT_ID = str(uuid4())
MOCK_ORDER_ID = "order_123"

# Test data
TEST_APPOINTMENT = Appointment(
    appointment_id=MOCK_APPOINTMENT_ID,
    customer_id=MOCK_CUSTOMER_ID,
    merchant_id=MOCK_MERCHANT_ID,
    merchant_name="Test Merchant",
    city="Test City",
    merchant_address={"street": "123 Test St", "city": "Test City"},
    location_id="LOC001",
    appointment_date="2023-12-25",
    appointment_time="10:00",
    associates=[{"associate_id": "STAFF1", "name": "John Doe"}],
    status=AppointmentStatus.PENDING,
    services=[{"service_id": "SERV1", "name": "Test Service", "price": 100.0, "duration": "30 minutes", "quantity": 1}],
    total_amount=100.0,
    payment_mode=PaymentMode.ONLINE,
    order_id=MOCK_ORDER_ID,
)

# Mock functions
@pytest.fixture
def mock_create_appointment():
    with patch("app.repositories.appointment.create_appointment", new_callable=AsyncMock) as mock:
        yield mock

@pytest.fixture
def mock_get_order_by_id():
    with patch("app.repositories.payment.get_order_by_id", new_callable=AsyncMock) as mock:
        mock.return_value = {"status": "pending"}
        yield mock

@pytest.fixture
def mock_get_appointment_by_id():
    with patch("app.repositories.appointment.get_appointment_by_id", new_callable=AsyncMock) as mock:
        yield mock

@pytest.fixture
def mock_update_appointment():
    with patch("app.repositories.appointment.update_appointment", new_callable=AsyncMock) as mock:
        yield mock

@pytest.fixture
def mock_cancel_appointment():
    with patch("app.repositories.appointment.cancel_appointment", new_callable=AsyncMock) as mock:
        yield mock

@pytest.fixture
def mock_fetch_appointments_from_db():
    with patch("app.repositories.appointment.fetch_appointments_from_db", new_callable=AsyncMock) as mock:
        yield mock

# Tests
@pytest.mark.asyncio
async def test_create_new_appointment_success(mock_create_appointment, mock_get_order_by_id):
    result = await create_new_appointment(TEST_APPOINTMENT)
    assert result["appointment_id"] == MOCK_APPOINTMENT_ID
    mock_create_appointment.assert_called_once()
    mock_get_order_by_id.assert_called_once_with(MOCK_ORDER_ID)

@pytest.mark.asyncio
async def test_create_new_appointment_invalid_order(mock_get_order_by_id):
    mock_get_order_by_id.return_value = None
    with pytest.raises(HTTPException) as exc_info:
        await create_new_appointment(TEST_APPOINTMENT)
    assert exc_info.value.status_code == 400
    assert "Invalid Razorpay Order ID" in str(exc_info.value.detail)

@pytest.mark.asyncio
async def test_reschedule_appointment_success(mock_get_appointment_by_id, mock_update_appointment):
    mock_get_appointment_by_id.return_value = {
        "appointment_id": MOCK_APPOINTMENT_ID,
        "status": AppointmentStatus.CONFIRMED.value,
        "appointment_date": "2023-12-25",
        "appointment_time": "10:00:00",
    }
    result = await reschedule_appointment(MOCK_APPOINTMENT_ID, "2023-12-26", "11:00:00", MOCK_CUSTOMER_ID)
    assert result["message"] == "Appointment rescheduled successfully"
    mock_update_appointment.assert_called_once()

@pytest.mark.asyncio
async def test_reschedule_appointment_past_date(mock_get_appointment_by_id):
    mock_get_appointment_by_id.return_value = {
        "appointment_id": MOCK_APPOINTMENT_ID,
        "status": AppointmentStatus.CONFIRMED.value,
        "appointment_date": "2023-12-25",
        "appointment_time": "10:00:00",
    }
    with pytest.raises(HTTPException) as exc_info:
        await reschedule_appointment(MOCK_APPOINTMENT_ID, "2023-12-24", "11:00:00", MOCK_CUSTOMER_ID)
    assert exc_info.value.status_code == 400
    assert "Cannot reschedule to a past time" in str(exc_info.value.detail)

@pytest.mark.asyncio
async def test_cancel_appointment_service_success(mock_get_appointment_by_id, mock_cancel_appointment):
    mock_get_appointment_by_id.return_value = {
        "appointment_id": MOCK_APPOINTMENT_ID,
        "status": AppointmentStatus.CONFIRMED.value,
        "appointment_date": "2023-12-25",
        "appointment_time": "10:00:00",
    }
    result = await cancel_appointment_service(MOCK_APPOINTMENT_ID, "change_of_plans", MOCK_CUSTOMER_ID)
    assert result["message"] == "Appointment canceled successfully"
    mock_cancel_appointment.assert_called_once()

@pytest.mark.asyncio
async def test_cancel_appointment_service_already_canceled(mock_get_appointment_by_id):
    mock_get_appointment_by_id.return_value = {
        "appointment_id": MOCK_APPOINTMENT_ID,
        "status": AppointmentStatus.CANCELED.value,
        "appointment_date": "2023-12-25",
        "appointment_time": "10:00:00",
    }
    with pytest.raises(HTTPException) as exc_info:
        await cancel_appointment_service(MOCK_APPOINTMENT_ID, "change_of_plans", MOCK_CUSTOMER_ID)
    assert exc_info.value.status_code == 400
    assert "Appointment is already canceled" in str(exc_info.value.detail)

@pytest.mark.asyncio
async def test_get_appointment_details_success(mock_get_appointment_by_id):
    mock_get_appointment_by_id.return_value = {
        "appointment_id": MOCK_APPOINTMENT_ID,
        "status": AppointmentStatus.CONFIRMED.value,
        "appointment_date": "2023-12-25",
        "appointment_time": "10:00:00",
    }
    result = await get_appointment_details(MOCK_APPOINTMENT_ID)
    assert result["appointment_id"] == MOCK_APPOINTMENT_ID

@pytest.mark.asyncio
async def test_get_appointments_by_customer_id_success(mock_fetch_appointments_from_db):
    mock_fetch_appointments_from_db.return_value = (
        [
            {
                "appointment_id": MOCK_APPOINTMENT_ID,
                "merchant_id": MOCK_MERCHANT_ID,
                "merchant_name": "Test Merchant",
                "merchant_address": "123 Test St",
                "location_id": str(uuid4()),
                "appointment_date": date(2023, 12, 25),
                "appointment_time": "10:00:00",
                "status": "confirmed",
                "associates": [],
                "services": [],
                "notes": "",
                "total_amount": 100.0,
                "discount": 0.0,
                "payment_status": "Paid",
                "payment_id": "pay_123",
                "cleared_amount": 100.0,
                #"created_at": datetime(2023, 12, 1, 10, 0, 0),
                #"modified_at": datetime(2023, 12, 1, 10, 0, 0),
            }
        ],
        1,
    )
    result = await get_appointments_by_customer_id(MOCK_CUSTOMER_ID)
    assert result.customer_id == MOCK_CUSTOMER_ID
    assert len(result.appointments) == 1
    assert result.appointments[0].appointment_id == MOCK_APPOINTMENT_ID