from io import BytesIO

import pytest


@pytest.mark.asyncio
async def test_vin_validation_rejects_invalid_value(client, auth_headers) -> None:
    response = await client.post(
        "/api/my/vehicles",
        headers=auth_headers,
        json={"name": "Bad VIN", "vin": "IOQ123"},
    )

    assert response.status_code == 422


@pytest.mark.asyncio
async def test_service_visit_owner_confirmation_and_change_request(
    client, auth_headers, admin_auth_headers, internal_headers
) -> None:
    vehicle = (
        await client.post(
            "/api/my/vehicles",
            headers=auth_headers,
            json={"name": "Platform car", "license_plate": "12 가 3456", "license_plate_country": "KR"},
        )
    ).json()
    center = (
        await client.post(
            "/api/service-centers",
            headers=auth_headers,
            json={"display_name": "Careful Service", "country": "KR", "city": "Seoul"},
        )
    ).json()
    await client.post(
        "/api/users",
        headers=internal_headers,
        json={"telegram_id": 9001, "platform_role": "admin"},
    )
    verify_response = await client.post(
        f"/api/admin/service-centers/{center['id']}/verify",
        headers=admin_auth_headers,
    )
    assert verify_response.status_code == 200
    visit = (
        await client.post(
            f"/api/service-centers/{center['id']}/visits",
            headers=auth_headers,
            json={"vehicle_id": vehicle["id"], "visit_date": "2026-05-12", "odometer": 12345},
        )
    ).json()

    item_response = await client.post(
        f"/api/service-visits/{visit['id']}/work-items",
        headers=auth_headers,
        json={"work_type": "oil_change", "title": "Engine oil", "oil_viscosity": "5W-30", "price": 100},
    )
    complete_response = await client.post(f"/api/service-visits/{visit['id']}/complete", headers=auth_headers)
    confirm_response = await client.post(f"/api/service-visits/{visit['id']}/confirm", headers=auth_headers)
    change_request = (
        await client.post(
            f"/api/service-visits/{visit['id']}/vehicle-change-requests",
            headers=auth_headers,
            json={"vehicle_id": vehicle["id"], "field_name": "vin", "new_value": "KMHCT41BAHU123456"},
        )
    ).json()
    approve_response = await client.post(
        f"/api/vehicle-change-requests/{change_request['id']}/approve",
        headers=auth_headers,
    )

    assert item_response.status_code == 201
    assert complete_response.json()["status"] == "pending_owner_confirmation"
    assert confirm_response.json()["status"] == "confirmed"
    assert approve_response.json()["status"] == "approved"
    refreshed = await client.get(f"/api/cars/{vehicle['id']}", headers=auth_headers)
    services = await client.get(f"/api/cars/{vehicle['id']}/service", headers=auth_headers)
    stats = await client.get(
        f"/api/cars/{vehicle['id']}/stats?date_from=2026-05-01&date_to=2026-05-31",
        headers=auth_headers,
    )
    assert refreshed.json()["current_odometer"] == 12345
    assert services.json()[0]["total_cost"] == "100.00"
    assert stats.json()["service_cost"] == "100.00"
    assert stats.json()["total_cost"] == "100.00"


@pytest.mark.asyncio
async def test_pending_service_center_cannot_create_visit(client, auth_headers) -> None:
    vehicle = (
        await client.post(
            "/api/my/vehicles",
            headers=auth_headers,
            json={"name": "Client car"},
        )
    ).json()
    center = (
        await client.post(
            "/api/service-centers",
            headers=auth_headers,
            json={"display_name": "Pending Service", "country": "KR", "city": "Seoul"},
        )
    ).json()
    response = await client.post(
        f"/api/service-centers/{center['id']}/visits",
        headers=auth_headers,
        json={"vehicle_id": vehicle["id"], "visit_date": "2026-05-12"},
    )

    assert response.status_code == 403


@pytest.mark.asyncio
async def test_public_service_center_and_review_flow(
    client, auth_headers, admin_auth_headers, internal_headers
) -> None:
    center = (
        await client.post(
            "/api/service-centers",
            headers=auth_headers,
            json={
                "display_name": "Review Service",
                "country": "KR",
                "city": "Seoul",
                "description": "Clean workshop",
                "specializations": ["oil", "diagnostics"],
            },
        )
    ).json()
    pending_list = await client.get("/api/service-centers/public", headers=auth_headers)
    assert pending_list.json() == []
    await client.post(
        "/api/users",
        headers=internal_headers,
        json={"telegram_id": 9001, "platform_role": "admin"},
    )
    await client.post(f"/api/admin/service-centers/{center['id']}/verify", headers=admin_auth_headers)

    public_list = await client.get("/api/service-centers/public", headers=auth_headers)
    assert public_list.status_code == 200
    assert public_list.json()[0]["display_name"] == "Review Service"

    review = await client.post(
        f"/api/service-centers/{center['id']}/reviews",
        headers=auth_headers,
        json={"rating": 5, "text": "Accurate and transparent service"},
    )
    assert review.status_code == 201
    refreshed = await client.get(f"/api/service-centers/{center['id']}", headers=auth_headers)
    assert refreshed.json()["reviews_count"] == 1

    vehicle = (
        await client.post(
            "/api/my/vehicles",
            headers=auth_headers,
            json={"name": "Review car"},
        )
    ).json()
    link = await client.post(
        f"/api/service-centers/{center['id']}/vehicle-links/owner-attach",
        headers=auth_headers,
        json={"car_id": vehicle["id"], "access_level": "basic"},
    )
    assert link.status_code == 200
    assert link.json()["status"] == "approved"


@pytest.mark.asyncio
async def test_ocr_candidates_do_not_write_vehicle_data(client, auth_headers) -> None:
    response = await client.post(
        "/api/ocr/vin",
        headers=auth_headers,
        files={"file": ("vin.txt", BytesIO(b"VIN KMHCT41BAHU123456"), "text/plain")},
    )

    assert response.status_code == 200
    assert response.json()["candidates"][0]["type"] == "vin"