from __future__ import annotations

import tempfile
from pathlib import Path

from application.csv_manager import CSVManager, sanitize_csv_cell_value


def test_sanitize_collapses_newlines() -> None:
  assert sanitize_csv_cell_value("a\nb") == "a b"
  assert sanitize_csv_cell_value("a\r\nb") == "a b"
  assert sanitize_csv_cell_value("  x\v\fy  ") == "x y"


def test_sanitize_unicode_line_separators() -> None:
  assert sanitize_csv_cell_value("a\u2028b\u2029c") == "a b c"
  assert sanitize_csv_cell_value("a\x85b") == "a b"


def test_sanitize_preserves_none_and_scalars() -> None:
  assert sanitize_csv_cell_value(None) is None
  assert sanitize_csv_cell_value(42) == 42
  assert sanitize_csv_cell_value(3.14) == 3.14
  assert sanitize_csv_cell_value(False) is False
  assert sanitize_csv_cell_value(True) is True


def test_sanitize_plain_string_unchanged_identity() -> None:
  s = "sin saltos"
  assert sanitize_csv_cell_value(s) is s


def test_append_rows_one_physical_line_per_record() -> None:
  with tempfile.TemporaryDirectory() as tmp:
    path = Path(tmp) / "batch.csv"
    mgr = CSVManager()
    header = ["radicado", "descripcion"]
    rows = [
      {
        "radicado": "235662283",
        "descripcion": (
          '"Las retenciones son a nivel informativo.\n'
          "Paciente: 1010079549 - HERAZO\n"
          'Contrato No. URGENCIAS."'
        ),
      },
      {"radicado": "2", "descripcion": "ok"},
    ]
    mgr.append_rows(str(path), rows, header)
    text = path.read_text(encoding="utf-8-sig")
    physical_lines = text.splitlines()
    assert len(physical_lines) == 3