import pytest
from src.basic_data_handling.data_list_nodes import (
    DataListAll,
    DataListAny,
    DataListAppend,
    DataListContains,
    DataListCount,
    DataListCreate,
    DataListCreateFromBoolean,
    DataListCreateFromFloat,
    DataListCreateFromInt,
    DataListCreateFromString,
    DataListEnumerate,
    DataListExtend,
    DataListFilter,
    DataListFilterEmpty,
    DataListFilterSelect,
    DataListFirst,
    DataListGetItem,
    DataListIndex,
    DataListInsert,
    DataListLast,
    DataListLength,
    DataListListCreate,
    DataListMax,
    DataListMin,
    DataListPop,
    DataListPopRandom,
    DataListRange,
    DataListRemove,
    DataListReverse,
    DataListSetItem,
    DataListShuffle,
    DataListSlice,
    DataListSort,
    DataListSum,
    DataListToList,
    DataListToSet,
    DataListZip,
)


def test_append():
    node = DataListAppend()
    assert node.append(list=[1, 2, 3], item=[4]) == ([1, 2, 3, 4],)
    assert node.append(list=[], item=["test"]) == (["test"],)
    assert node.append(list=[1, 2, 3], item=[]) == ([1, 2, 3],)


def test_extend():
    node = DataListExtend()
    assert node.extend(list_a=[1, 2], list_b=[3, 4]) == ([1, 2, 3, 4],)
    assert node.extend(list_a=[], list_b=["a", "b"]) == (["a", "b"],)
    assert node.extend(list_a=[1], list_b=[]) == ([1],)


def test_insert():
    node = DataListInsert()
    assert node.insert(list=[1, 2, 4], index=[2], item=[3]) == ([1, 2, 3, 4],)
    assert node.insert(list=[], index=[0], item=["a"]) == (["a"],)
    assert node.insert(list=[1, 2], index=[5], item=[3]) == ([1, 2, 3],)  # Out-of-range insert


def test_remove():
    node = DataListRemove()
    assert node.remove(list=[1, 2, 3], value=[2]) == ([1, 3], True)
    assert node.remove(list=["a", "b", "a"], value=["a"]) == (["b", "a"], True)
    assert node.remove(list=[1, 2, 3], value=[5]) == ([1, 2, 3], False)  # Value not found


def test_pop():
    node = DataListPop()
    assert node.pop(list=[1, 2, 3], index=[1]) == ([1, 3], 2)
    assert node.pop(list=["a", "b", "c"], index=[-1]) == (["a", "b"], "c")  # Negative index
    assert node.pop(list=[], index=[0]) == ([], None)  # Pop from empty list


def test_index():
    node = DataListIndex()
    assert node.list_index(list=["a", "b", "c"], value=["b"]) == (1,)
    assert node.list_index(list=[1, 2, 3], value=[5]) == (-1,)  # Value not found
    assert node.list_index(list=[1, 2, 1, 2], value=[1], start=[1]) == (2,)


def test_count():
    node = DataListCount()
    assert node.count(list=[1, 2, 1, 2], value=[1]) == (2,)
    assert node.count(list=["a", "b", "a"], value=["a"]) == (2,)
    assert node.count(list=[], value=["x"]) == (0,)


def test_sort():
    node = DataListSort()
    assert node.sort(list=[3, 2, 1]) == ([1, 2, 3],)
    assert node.sort(list=["c", "a", "b"]) == (["a", "b", "c"],)
    assert node.sort(list=[3, 1, 2], reverse=["True"]) == ([3, 2, 1],)  # Reverse sort


def test_reverse():
    node = DataListReverse()
    assert node.reverse(list=[1, 2, 3]) == ([3, 2, 1],)
    assert node.reverse(list=[]) == ([],)


def test_length():
    node = DataListLength()
    assert node.length(list=[1, 2, 3]) == (3,)
    assert node.length(list=[]) == (0,)


def test_slice():
    node = DataListSlice()
    assert node.slice(list=[1, 2, 3, 4, 5], start=[1], stop=[4]) == ([2, 3, 4],)
    assert node.slice(list=[1, 2, 3], start=[0], stop=[2], step=[2]) == ([1],)
    assert node.slice(list=["a", "b", "c"], start=[-2], stop=[3]) == (["b", "c"],)


def test_get_item():
    node = DataListGetItem()
    assert node.get_item(list=[1, 2, 3], index=[1]) == (2,)
    assert node.get_item(list=["a", "b", "c"], index=[-1]) == ("c",)  # Negative index
    assert node.get_item(list=[], index=[0]) == (None,)  # Out of range


def test_set_item():
    node = DataListSetItem()
    assert node.set_item(list=[1, 2, 3], index=[1], value=[9]) == ([1, 9, 3],)
    assert node.set_item(list=["a", "b", "c"], index=[-1], value=["z"]) == (["a", "b", "z"],)
    with pytest.raises(IndexError):
        node.set_item(list=[], index=[0], value=["test"])  # Out of range


def test_shuffle():
    node = DataListShuffle()

    # Test determinism: Same seed should produce the same shuffle
    original_list = [1, 2, 3, 4, 5]
    result1 = node.shuffle_list(list=original_list, seed=[42])
    result2 = node.shuffle_list(list=original_list, seed=[42])
    assert result1 == result2  # Same seed, same output

    # Verify the output is a permutation of the input
    assert sorted(result1[0]) == sorted(original_list)
    assert len(result1[0]) == len(original_list)

    # Test different seeds produce different shuffles (not guaranteed, but likely for this list)
    result3 = node.shuffle_list(list=original_list, seed=[123])
    assert result1 != result3  # Different seed, likely different output

    # Test empty list
    assert node.shuffle_list(list=[], seed=[0]) == ([],)

    # Test single-item list
    assert node.shuffle_list(list=[42], seed=[99]) == ([42],)

    # Test mixed data types
    mixed_list = ["apple", 3.14, True, 42]
    result4 = node.shuffle_list(list=mixed_list, seed=[7])
    assert sorted(result4[0], key=str) == sorted(mixed_list, key=str)  # Sort for comparison since types may not be directly comparable
    assert len(result4[0]) == len(mixed_list)

    # Test that the original list is not modified (node should return a copy)
    original_copy = original_list.copy()
    node.shuffle_list(list=original_list, seed=[1])
    assert original_list == original_copy  # Original should remain unchanged


def test_contains():
    node = DataListContains()
    assert node.contains(list=[1, 2, 3], value=[2]) == (True,)
    assert node.contains(list=["a", "b"], value=["c"]) == (False,)
    assert node.contains(list=[], value=["x"]) == (False,)


def test_zip():
    node = DataListZip()
    assert node.zip_lists(list1=[1, 2], list2=["a", "b"]) == ([[1, "a"], [2, "b"]],)
    assert node.zip_lists(list1=[1], list2=["a", "b"]) == ([[1, "a"]],)  # Shortest list length
    assert node.zip_lists(list1=[1, 2, 3], list2=["a", "b"]) == ([[1, "a"], [2, "b"]],)  # Different lengths


def test_filter():
    node = DataListFilter()
    assert node.filter_data(value=[1, 2, 3], filter=[False, True, False]) == ([1, 3],)
    assert node.filter_data(value=[1, 2], filter=[True, True]) == ([],)
    assert node.filter_data(value=[1, 2, 3], filter=[False, False, False]) == ([1, 2, 3],)


def test_filter_empty():
    node = DataListFilterEmpty()
    assert node.filter_empty(list=[1, 2, 3]) == ([1, 2, 3],)
    assert node.filter_empty(list=[None, 1, "", 2, [], 3, {}, set()]) == ([1, 2, 3],)
    assert node.filter_empty(list=[0, False, 0.0, "", None]) == ([0, False, 0.0],)  # 0 and False are not empty
    assert node.filter_empty(list=["", " ", "\t", "a"]) == ([" ", "\t", "a"],)  # whitespace is kept by default
    assert node.filter_empty(list=["", " ", "\t", "a"], treat_whitespace_as_empty=[True]) == (["a"],)
    assert node.filter_empty(list=[], treat_whitespace_as_empty=[True]) == ([],)

    # Entries without a length (e.g. TENSORs) are never regarded as empty
    opaque = object()
    assert node.filter_empty(list=[opaque, None, ""]) == ([opaque],)


def test_min():
    node = DataListMin()
    assert node.find_min(list=[3, 1, 2]) == (1,)
    assert node.find_min(list=[-1, -5, 0]) == (-5,)
    assert node.find_min(list=[]) == (None,)


def test_max():
    node = DataListMax()
    assert node.find_max(list=[3, 1, 2]) == (3,)
    assert node.find_max(list=[-1, -5, 0]) == (0,)
    assert node.find_max(list=[]) == (None,)


def test_filter_select():
    node = DataListFilterSelect()
    true_list, false_list = node.select(value=[1, 2, 3], select=[True, False, True])
    assert true_list == [1, 3]
    assert false_list == [2]

    # All true case
    true_list, false_list = node.select(value=["a", "b"], select=[True, True])
    assert true_list == ["a", "b"]
    assert false_list == []

    # All false case
    true_list, false_list = node.select(value=[1, 2, 3], select=[False, False, False])
    assert true_list == []
    assert false_list == [1, 2, 3]


def test_create():
    node = DataListCreate()
    # Testing with one item
    assert node.create_list(item_0="test", item_1="") == (["test"],)

    # Testing with multiple items of different types
    assert node.create_list(item_0=1, item_1="two", item_2=3.0, item_3="") == ([1, "two", 3.0],)

    # Testing with empty list (no items)
    assert node.create_list(item_0="") == ([],)


def test_create_from_boolean():
    node = DataListCreateFromBoolean()
    # Testing with boolean values
    assert node.create_list(item_0=True, item_1=False, item_2=False) == ([True, False],)

    # Testing with boolean-convertible values
    assert node.create_list(item_0=1, item_1=0, item_2="") == ([True, False],)

    # Testing with empty list
    assert node.create_list(item_0=0) == ([],)


def test_create_from_float():
    node = DataListCreateFromFloat()
    # Testing with float values
    assert node.create_list(item_0=1.5, item_1=2.5, item_2=2) == ([1.5, 2.5],)

    # Testing with float-convertible values
    assert node.create_list(item_0=1, item_1="2.5", item_2="") == ([1.0, 2.5],)

    # Testing with empty list
    assert node.create_list(item_0="") == ([],)


def test_create_from_int():
    node = DataListCreateFromInt()
    # Testing with integer values
    assert node.create_list(item_0=1, item_1=2, item_2="") == ([1, 2],)

    # Testing with int-convertible values
    assert node.create_list(item_0="1", item_1=2.0, item_2="") == ([1, 2],)

    # Testing with empty list
    assert node.create_list(item_0="") == ([],)


def test_create_from_string():
    node = DataListCreateFromString()
    # Testing with string values
    assert node.create_list(item_0="hello", item_1="world", item_2="") == (["hello", "world"],)

    # Testing with string-convertible values
    assert node.create_list(item_0=123, item_1=True, item_2="") == (["123", "True"],)

    # Testing with empty list
    assert node.create_list(item_0="") == ([],)


def test_list_create():
    node = DataListListCreate()
    # Testing with string values
    assert node.create_list(item_0=["hello", "world"], item_1=["bye", "bye!"], item_2="") == ([["hello", "world"], ["bye", "bye!"]],)

    # Testing with mixed values
    assert node.create_list(item_0=[123, 456], item_1=[True, False], item_2="") == ([[123, 456], [True, False]],)

    # Testing with empty list
    assert node.create_list(item_0="") == ([],)


def test_pop_random():
    node = DataListPopRandom()
    result_list, item = node.pop_random_element(list=[1])
    assert result_list == [] and item == 1  # Only one item, so it must be chosen

    # With multiple items, we can't predict which one will be popped
    # But we can check that an item was removed and returned
    result_list, item = node.pop_random_element(list=[1, 2, 3])
    assert len(result_list) == 2 and item in [1, 2, 3]

    # Empty list case
    assert node.pop_random_element(list=[]) == ([], None)

    # Same seed should produce the same popped item
    original_list = [1, 2, 3, 4]
    result1, item1 = node.pop_random_element(list=original_list, seed=[42])
    result2, item2 = node.pop_random_element(list=original_list, seed=[42])
    assert item1 == item2
    assert result1 == result2


def test_first():
    node = DataListFirst()
    assert node.get_first_element(list=[1, 2, 3]) == (1,)
    assert node.get_first_element(list=["a", "b", "c"]) == ("a",)
    assert node.get_first_element(list=[]) == (None,)  # Empty list


def test_last():
    node = DataListLast()
    assert node.get_last_element(list=[1, 2, 3]) == (3,)
    assert node.get_last_element(list=["a", "b", "c"]) == ("c",)
    assert node.get_last_element(list=[]) == (None,)  # Empty list


def test_to_list():
    node = DataListToList()
    # Test with regular list
    assert node.convert(list=[1, 2, 3]) == ([1, 2, 3],)
    # Test with empty list
    assert node.convert(list=[]) == ([],)
    # Test with mixed types
    assert node.convert(list=[1, "two", 3.0]) == ([1, "two", 3.0],)


def test_to_set():
    node = DataListToSet()
    # Test with regular list
    assert node.convert(list=[1, 2, 3]) == ({1, 2, 3},)
    # Test with empty list
    assert node.convert(list=[]) == (set(),)
    # Test with duplicates
    assert node.convert(list=[1, 2, 1, 3, 2]) == ({1, 2, 3},)
    # Test with mixed types (that can be in a set)
    assert node.convert(list=[1, "two", 3.0]) == ({1, "two", 3.0},)


def test_all():
    node = DataListAll()
    # All true values
    assert node.check_all(list=[True, True, 1, "text"]) == (True,)
    # Contains false value
    assert node.check_all(list=[True, False, True]) == (False,)
    # Empty list (returns True)
    assert node.check_all(list=[]) == (True,)


def test_any():
    node = DataListAny()
    # Contains true value
    assert node.check_any(list=[False, True, False]) == (True,)
    # All false values
    assert node.check_any(list=[False, 0, "", None]) == (False,)
    # Empty list (returns False)
    assert node.check_any(list=[]) == (False,)


def test_enumerate():
    node = DataListEnumerate()
    # Basic enumeration starting from 0
    assert node.enumerate_list(list=["a", "b", "c"]) == ([[0, "a"], [1, "b"], [2, "c"]],)
    # Custom start index
    assert node.enumerate_list(list=["x", "y", "z"], start=[10]) == ([[10, "x"], [11, "y"], [12, "z"]],)
    # Empty list
    assert node.enumerate_list(list=[]) == ([],)


def test_sum():
    node = DataListSum()
    # Integer sum
    int_sum, float_sum = node.sum_list(list=[1, 2, 3])
    assert int_sum == 6
    assert float_sum == 6.0

    # Mixed number types
    int_sum, float_sum = node.sum_list(list=[1, 2.5, 3])
    assert int_sum == 6  # Integer part of the sum
    assert float_sum == 6.5  # Full float sum

    # With start value
    int_sum, float_sum = node.sum_list(list=[1, 2, 3], start=[10])
    assert int_sum == 16
    assert float_sum == 16.0

    # Empty list with start value
    int_sum, float_sum = node.sum_list(list=[], start=[5])
    assert int_sum == 5
    assert float_sum == 5.0


def test_range():
    node = DataListRange()
    # Test with default start (0) and step (1)
    assert node.create_range(stop=5) == ([0, 1, 2, 3, 4],)

    # Test with custom start and stop
    assert node.create_range(start=2, stop=6) == ([2, 3, 4, 5],)

    # Test with custom step
    assert node.create_range(start=0, stop=10, step=2) == ([0, 2, 4, 6, 8],)

    # Test with negative numbers
    assert node.create_range(start=-3, stop=3) == ([-3, -2, -1, 0, 1, 2],)

    # Test backward counting
    assert node.create_range(start=5, stop=0, step=-1) == ([5, 4, 3, 2, 1],)

    # Test empty range
    assert node.create_range(start=0, stop=0) == ([],)

    # Test when start > stop with positive step (returns empty list)
    assert node.create_range(start=10, stop=5) == ([],)

    # Test with ValueError (step cannot be zero)
    with pytest.raises(ValueError, match="Step cannot be zero"):
        node.create_range(start=0, stop=5, step=0)


def test_data_list_none_source():
    """Graceful behaviour when the Data List source is None."""
    assert DataListAll().check_all(list=None) == (True,)
    assert DataListAny().check_any(list=None) == (False,)
    assert DataListAppend().append(list=None, item=[1]) == ([1],)
    assert DataListContains().contains(list=None, value=[1]) == (False,)
    assert DataListCount().count(list=None, value=[1]) == (0,)
    assert DataListEnumerate().enumerate_list(list=None) == ([],)
    assert DataListExtend().extend(list_a=None, list_b=None) == ([],)
    assert DataListFilter().filter_data(value=None, filter=None) == ([],)
    assert DataListFilterEmpty().filter_empty(list=None) == ([],)
    assert DataListFilterSelect().select(value=None, select=None) == ([], [])
    assert DataListFirst().get_first_element(list=None) == (None,)
    assert DataListGetItem().get_item(list=None, index=[0]) == (None,)
    assert DataListIndex().list_index(list=None, value=[1]) == (-1,)
    assert DataListInsert().insert(list=None, index=[0], item=[1]) == ([1],)
    assert DataListLast().get_last_element(list=None) == (None,)
    assert DataListLength().length(list=None) == (0,)
    assert DataListMax().find_max(list=None) == (None,)
    assert DataListMin().find_min(list=None) == (None,)
    assert DataListPop().pop(list=None) == ([], None)
    assert DataListPopRandom().pop_random_element(list=None) == ([], None)
    assert DataListRemove().remove(list=None, value=[1]) == ([], False)
    assert DataListReverse().reverse(list=None) == ([],)
    assert DataListShuffle().shuffle_list(list=None, seed=[0]) == ([],)
    assert DataListSlice().slice(list=None) == ([],)
    assert DataListSort().sort(list=None) == ([],)
    assert DataListSum().sum_list(list=None) == (0, 0.0)
    assert DataListZip().zip_lists(list1=None, list2=None) == ([],)
    assert DataListToList().convert(list=None) == ([],)
    assert DataListToSet().convert(list=None) == (set(),)