from uuid import uuid4

import pytest

from fastapi.testclient import TestClient


@pytest.fixture
def client(api_client: TestClient) -> TestClient:
    return api_client


def _create_scenario_and_equipment(client: TestClient):
    scenario_payload = {
        "name": f"Test Scenario {uuid4()}",
        "description": "Scenario for maintenance tests",
    }
    scenario_response = client.post("/api/scenarios/", json=scenario_payload)
    assert scenario_response.status_code == 200
    scenario_id = scenario_response.json()["id"]

    equipment_payload = {
        "scenario_id": scenario_id,
        "name": f"Test Equipment {uuid4()}",
        "description": "Equipment linked to maintenance",
    }
    equipment_response = client.post("/api/equipment/", json=equipment_payload)
    assert equipment_response.status_code == 200
    equipment_id = equipment_response.json()["id"]
    return scenario_id, equipment_id


def _create_maintenance_payload(
    equipment_id: int, scenario_id: int, description: str
):
    return {
        "equipment_id": equipment_id,
        "scenario_id": scenario_id,
        "maintenance_date": "2025-10-20",
        "description": description,
        "cost": 100.0,
    }


def test_create_and_list_maintenance(client: TestClient):
    scenario_id, equipment_id = _create_scenario_and_equipment(client)
    payload = _create_maintenance_payload(
        equipment_id, scenario_id, "Create maintenance"
    )

    response = client.post("/api/maintenance/", json=payload)
    assert response.status_code == 201
    created = response.json()
    assert created["equipment_id"] == equipment_id
    assert created["scenario_id"] == scenario_id
    assert created["description"] == "Create maintenance"

    list_response = client.get("/api/maintenance/")
    assert list_response.status_code == 200
    items = list_response.json()
    assert any(item["id"] == created["id"] for item in items)


def test_get_maintenance(client: TestClient):
    scenario_id, equipment_id = _create_scenario_and_equipment(client)
    payload = _create_maintenance_payload(
        equipment_id, scenario_id, "Retrieve maintenance"
    )
    create_response = client.post("/api/maintenance/", json=payload)
    assert create_response.status_code == 201
    maintenance_id = create_response.json()["id"]

    response = client.get(f"/api/maintenance/{maintenance_id}")
    assert response.status_code == 200
    data = response.json()
    assert data["id"] == maintenance_id
    assert data["equipment_id"] == equipment_id
    assert data["description"] == "Retrieve maintenance"


def test_update_maintenance(client: TestClient):
    scenario_id, equipment_id = _create_scenario_and_equipment(client)
    create_response = client.post(
        "/api/maintenance/",
        json=_create_maintenance_payload(
            equipment_id, scenario_id, "Maintenance before update"
        ),
    )
    assert create_response.status_code == 201
    maintenance_id = create_response.json()["id"]

    update_payload = {
        "equipment_id": equipment_id,
        "scenario_id": scenario_id,
        "maintenance_date": "2025-11-01",
        "description": "Maintenance after update",
        "cost": 250.0,
    }

    response = client.put(
        f"/api/maintenance/{maintenance_id}", json=update_payload
    )
    assert response.status_code == 200
    updated = response.json()
    assert updated["maintenance_date"] == "2025-11-01"
    assert updated["description"] == "Maintenance after update"
    assert updated["cost"] == 250.0


def test_delete_maintenance(client: TestClient):
    scenario_id, equipment_id = _create_scenario_and_equipment(client)
    create_response = client.post(
        "/api/maintenance/",
        json=_create_maintenance_payload(
            equipment_id, scenario_id, "Delete maintenance"
        ),
    )
    assert create_response.status_code == 201
    maintenance_id = create_response.json()["id"]

    delete_response = client.delete(f"/api/maintenance/{maintenance_id}")
    assert delete_response.status_code == 204

    get_response = client.get(f"/api/maintenance/{maintenance_id}")
    assert get_response.status_code == 404