import importlib.util
import pathlib


def load_module():
    path = pathlib.Path(__file__).resolve().parents[1] / "dashboards_render_atlas.py"
    spec = importlib.util.spec_from_file_location("dashboards_render_atlas", path)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


def test_table_panel_options_and_filterable():
    mod = load_module()
    panel = mod.table_panel(
        1,
        "test",
        "metric",
        {"h": 1, "w": 1, "x": 0, "y": 0},
        unit="percent",
        transformations=[{"id": "labelsToFields", "options": {}}],
        instant=True,
        options={"showColumnFilters": False},
        filterable=False,
        footer={"show": False, "fields": "", "calcs": []},
        format="table",
    )
    assert panel["fieldConfig"]["defaults"]["unit"] == "percent"
    assert panel["fieldConfig"]["defaults"]["custom"]["filterable"] is False
    assert panel["options"]["showHeader"] is True
    assert panel["targets"][0]["format"] == "table"


def test_node_filter_and_expr_helpers():
    mod = load_module()
    expr = mod.node_filter("titan-.*")
    assert "label_replace" in expr
    cpu_expr = mod.node_cpu_expr("titan-.*")
    mem_expr = mod.node_mem_expr("titan-.*")
    assert "node_cpu_seconds_total" in cpu_expr
    assert "node_memory_MemAvailable_bytes" in mem_expr


def test_render_configmap_writes(tmp_path):
    mod = load_module()
    mod.DASHBOARD_DIR = tmp_path / "dash"
    mod.ROOT = tmp_path
    uid = "atlas-test"
    info = {"configmap": tmp_path / "cm.yaml"}
    data = {"title": "Atlas Test"}
    mod.write_json(uid, data)
    mod.render_configmap(uid, info)
    json_path = mod.DASHBOARD_DIR / f"{uid}.json"
    assert json_path.exists()
    content = (tmp_path / "cm.yaml").read_text()
    assert "kind: ConfigMap" in content
    assert f"{uid}.json" in content