import uuid
from datetime import timedelta
from unittest.mock import Mock, patch

import pytest
from django.urls import reverse
from django.utils import timezone
from rest_framework.test import APIClient

from apps.accounts.models import User, UserRole
from apps.bookings.models import Booking, BookingStatus
from apps.payments.models import Payment, PaymentProvider, PaymentStatus
from apps.salons.models import Salon, Service, StaffProfile


@pytest.fixture
def booking_entities():
    owner = User.objects.create_user(
        email="owner@example.com",
        password="pass",
        role=UserRole.MANAGER,
        phone_number="+966500000011",
    )
    customer = User.objects.create_user(
        email="customer@example.com",
        password="pass",
        phone_number="+966500000012",
    )
    staff_user = User.objects.create_user(
        email="staff@example.com",
        password="pass",
        role=UserRole.STAFF,
        phone_number="+966500000013",
    )

    salon = Salon.objects.create(
        owner=owner,
        name="Main Salon",
        description="",
        address="123 King Rd",
        city="Riyadh",
        phone_number="0512345678",
    )
    service = Service.objects.create(
        salon=salon,
        name="Haircut",
        description="",
        duration_minutes=60,
        price_amount=120,
        currency="SAR",
    )
    staff = StaffProfile.objects.create(user=staff_user, salon=salon)

    start_time = timezone.now() + timedelta(days=1)
    end_time = start_time + timedelta(minutes=60)
    booking = Booking.objects.create(
        salon=salon,
        customer=customer,
        service=service,
        staff=staff,
        start_time=start_time,
        end_time=end_time,
        status=BookingStatus.PENDING,
        price_amount=service.price_amount,
        currency=service.currency,
        notes="",
    )
    return customer, booking


def _mock_gateway_response(payment_id="pay_test", status="initiated"):
    response = Mock()
    response.status_code = 201
    response.json.return_value = {
        "id": payment_id,
        "status": status,
        "source": {"transaction_url": "https://moyasar.example/tx"},
    }
    response.content = b"{}"
    return response


@pytest.mark.django_db
@patch("apps.payments.services.gateway.requests.post")
def test_create_payment_idempotency_returns_existing(mock_post, booking_entities, monkeypatch):
    customer, booking = booking_entities
    client = APIClient()
    client.force_authenticate(user=customer)

    monkeypatch.setenv("MOYASAR_SECRET_KEY", "sk_test")
    monkeypatch.setenv("MOYASAR_PUBLISHABLE_KEY", "pk_test")

    mock_post.return_value = _mock_gateway_response()
    request_id = str(uuid.uuid4())

    payload = {
        "booking_id": booking.id,
        "provider": PaymentProvider.MOYASAR,
        "idempotency_key": request_id,
        "source": {"type": "stcpay", "mobile": "0500000000"},
    }

    response = client.post(reverse("payment-list"), payload, content_type="application/json")
    assert response.status_code == 201

    response_repeat = client.post(reverse("payment-list"), payload, content_type="application/json")
    assert response_repeat.status_code == 200
    assert Payment.objects.count() == 1


@pytest.mark.django_db
def test_rejects_creditcard_source(booking_entities):
    customer, booking = booking_entities
    client = APIClient()
    client.force_authenticate(user=customer)

    payload = {
        "booking_id": booking.id,
        "provider": PaymentProvider.MOYASAR,
        "idempotency_key": str(uuid.uuid4()),
        "source": {"type": "creditcard", "number": "4111111111111111"},
    }

    response = client.post(reverse("payment-list"), payload, content_type="application/json")
    assert response.status_code == 400
    assert "source" in response.json()


@pytest.mark.django_db
def test_webhook_paid_updates_status(booking_entities, monkeypatch):
    _, booking = booking_entities
    monkeypatch.setenv("MOYASAR_WEBHOOK_SECRET", "secret")

    payment = Payment.objects.create(
        booking=booking,
        provider=PaymentProvider.MOYASAR,
        status=PaymentStatus.INITIATED,
        amount=booking.price_amount,
        currency=booking.currency,
        external_id="pay_webhook",
        metadata={},
    )

    payload = {
        "type": "payment_paid",
        "secret_token": "secret",
        "data": {"id": "pay_webhook"},
    }

    client = APIClient()
    response = client.post(reverse("payment-webhook"), payload, content_type="application/json")
    assert response.status_code == 200

    payment.refresh_from_db()
    assert payment.status == PaymentStatus.PAID
    assert payment.paid_at is not None


@pytest.mark.django_db
def test_webhook_invalid_secret_is_rejected(booking_entities, monkeypatch):
    _, booking = booking_entities
    monkeypatch.setenv("MOYASAR_WEBHOOK_SECRET", "secret")

    Payment.objects.create(
        booking=booking,
        provider=PaymentProvider.MOYASAR,
        status=PaymentStatus.INITIATED,
        amount=booking.price_amount,
        currency=booking.currency,
        external_id="pay_webhook",
        metadata={},
    )

    payload = {
        "type": "payment_paid",
        "secret_token": "wrong",
        "data": {"id": "pay_webhook"},
    }

    client = APIClient()
    response = client.post(reverse("payment-webhook"), payload, content_type="application/json")
    assert response.status_code == 401