"""Basic simulation test for pyngspice (moved from root test_sim.py)."""

import os
import tempfile

import pytest

from pyngspice import _cpp_available


@pytest.mark.skipif(not _cpp_available, reason="C++ extension not built")
def test_simulator_basic():
    """Test the low-level Simulator class with a simple RC circuit."""
    from pyngspice import Simulator

    sim = Simulator()
    sim.initialize()
    assert sim.is_initialized()

    netlist = """RC Test Circuit
V1 in 0 DC 1
R1 in out 1k
C1 out 0 1u
.tran 0.1m 10m
.end
"""

    with tempfile.NamedTemporaryFile(mode='w', suffix='.cir', delete=False) as f:
        f.write(netlist)
        netlist_path = f.name

    try:
        sim.load_netlist(netlist_path)
        sim.run()

        plots = sim.all_plots()
        assert len(plots) > 0

        vectors = sim.all_vectors(plots[0])
        assert len(vectors) > 0
    finally:
        os.unlink(netlist_path)


@pytest.mark.skipif(not _cpp_available, reason="C++ extension not built")
def test_simrunner_basic():
    """Test the SimRunner class with a simple RC circuit."""
    from pyngspice import SimRunner, RawRead

    with tempfile.TemporaryDirectory() as tmpdir:
        netlist_path = os.path.join(tmpdir, "rc.cir")
        with open(netlist_path, "w") as f:
            f.write("""RC Test
V1 in 0 DC 1
R1 in out 1k
C1 out 0 1u
.tran 0.1m 10m
.end
""")

        runner = SimRunner(output_folder=tmpdir)
        raw_file, log_file = runner.run_now(netlist_path)

        assert os.path.isfile(raw_file)

        raw = RawRead(raw_file)
        traces = raw.get_trace_names()
        assert len(traces) > 0
        assert raw.num_points > 0