from pathlib import Path

from pygui.backend.data.file_browser import FileBrowser


def _write_csv(path, wafer_id="P00001"):
    path.write_text(
        f"Wafer ID={wafer_id}\n"
        "Acquisition Date=03/26/2025\n"
        "Label,1,2,3\n"
        "X (mm),0,10,-10\n"
        "Y (mm),10,-10,-10\n"
        "data\n"
        "0.0,149.0,148.5,150.6\n"
    )


def test_recorded_live_file_flagged_as_recording(qapp, tmp_path):
    """Files named live_<serial>_<timestamp>.csv (SessionController.startRecording)
    must be distinguishable in the browser from read-memory dumps."""
    _write_csv(tmp_path / "live_P00001_20260706_143022.csv")
    _write_csv(tmp_path / "P00002-20260706_143500.csv")

    browser = FileBrowser()
    browser._set_current_directory(tmp_path)
    browser.refreshFiles()

    files_by_name = {Path(row["fileName"]).name: row for row in browser.files}
    assert files_by_name["live_P00001_20260706_143022.csv"]["isRecording"] is True
    assert files_by_name["P00002-20260706_143500.csv"]["isRecording"] is False


def test_set_current_directory_updates_dir_and_refreshes(qapp, tmp_path):
    """setCurrentDirectory (no native dialog) is how the Status tab's save-dir
    picker keeps the Source panel pointed at the same folder."""
    _write_csv(tmp_path / "P00003-20260706_143500.csv")

    browser = FileBrowser()
    browser.setCurrentDirectory(str(tmp_path))

    assert browser.currentDirectory == str(tmp_path)
    assert len(browser.files) == 1
    assert Path(browser.files[0]["fileName"]).name == "P00003-20260706_143500.csv"