import pytest
from pathlib import Path

# Import the function to test - assuming it's in a module called 'maildir_analyzer'
# Update this import to match your actual module structure
from maildirclean.cli import parse_selections


def test_single_number():
    result = parse_selections("3", 5)
    assert result == {3}


def test_comma_separated_list():
    result = parse_selections("1,3,5", 5)
    assert result == {1, 3, 5}


def test_range():
    result = parse_selections("2-4", 5)
    assert result == {2, 3, 4}


def test_range_with_spaces():
    result = parse_selections("1 - 3", 5)
    assert result == {1, 2, 3}


def test_combined_input():
    result = parse_selections("1,3-5,7", 10)
    assert result == {1, 3, 4, 5, 7}


def test_duplicate_numbers():
    result = parse_selections("1,1,2,2-4,3", 5)
    assert result == {1, 2, 3, 4}  # Set removes duplicates


def test_invalid_format():
    with pytest.raises(ValueError, match="Invalid input: abc"):
        parse_selections("abc", 5)


def test_invalid_range_format():
    with pytest.raises(ValueError, match="Invalid range format: 2-a"):
        parse_selections("2-a", 5)


def test_inverted_range():
    with pytest.raises(ValueError, match="Invalid range: 5-2"):
        parse_selections("5-2", 5)


def test_out_of_range():
    with pytest.raises(ValueError, match="Selection.*out of range"):
        parse_selections("3,6,8", 5)


def test_mix_valid_and_invalid():
    with pytest.raises(ValueError):
        parse_selections("1,abc,3", 5)


def test_empty_input():
    with pytest.raises(ValueError):
        parse_selections("", 5)


def test_whitespace_only():
    with pytest.raises(ValueError):
        parse_selections("   ", 5)


def test_max_boundary():
    # Test the boundary case
    result = parse_selections("5", 5)
    assert result == {5}


def test_complex_input():
    result = parse_selections("1-2, 4, 6-8", 10)
    assert result == {1, 2, 4, 6, 7, 8}


def test_negative_numbers():
    with pytest.raises(ValueError, match="Invalid range format:*"):
        parse_selections("-1,2", 5)