import json
import threading
from types import SimpleNamespace

from fastapi import FastAPI
from fastapi.testclient import TestClient
import pytest

from k1link.fleet import board_layout
from k1link.fleet.trust import PairingError
from k1link.web.fleet_api import router, local_operator


def test_layout_api_persists_empty_and_isolates_vehicles(tmp_path):
    app = FastAPI()
    app.include_router(router)
    def find(identifier):
        if identifier not in ("rover-a", "rover-b"):
            raise PairingError("Unknown")
    fleet = SimpleNamespace(root=tmp_path, lock=threading.RLock(), find=find)
    app.dependency_overrides[local_operator] = lambda: fleet
    client = TestClient(app)
    for section in board_layout.SECTIONS:
        response = client.patch('/api/v1/fleet/rover-a/board-layout', json={"section": section, "open": False})
        assert response.status_code == 200
    assert client.get('/api/v1/fleet/rover-a/board-layout').json()['open_sections'] == []
    assert client.get('/api/v1/fleet/rover-b/board-layout').json()['open_sections'] == list(board_layout.SECTIONS)
    assert board_layout.read(tmp_path, 'rover-a')['revision'] == 3
    assert board_layout.path(tmp_path, 'rover-a').stat().st_mode & 0o777 == 0o600
    for body in ({"section":"motor","open":True},{"section":"computer","open":"true"},{"section":"computer","open":True,"extra":0}):
        assert client.patch('/api/v1/fleet/rover-a/board-layout', json=body).status_code == 422
    assert client.get('/api/v1/fleet/missing/board-layout').status_code == 404


def test_corrupt_layout_is_preserved(tmp_path):
    board_layout.update(tmp_path, "a", "computer", False)
    target = board_layout.path(tmp_path, "a")
    raw = json.dumps({"schema":board_layout.SCHEMA,"revision":3,"open_sections":["motor"]})
    target.write_text(raw)
    with pytest.raises(ValueError):
        board_layout.update(tmp_path, "a", "devices", False)
    assert target.read_text() == raw