from genesis.data_models import CellValue, ExcelTable, ExtractionMethod, SheetType
from genesis.parsers.merge_fill import forward_fill
from genesis.parsers.table_extractor import column_letter, extract_table


def test_forward_fill_vertical():
    matrix = [
        ["機能ID", "機能名", "備考"],
        ["A001", "", ""],
        ["", "", "メモ"],
    ]
    filled = forward_fill(matrix, [(1, 2, 2, 2)])  # B1:B2 纵向合并
    assert filled[1][1] == "機能名"
    assert filled[2][2] == "メモ"


def test_forward_fill_horizontal():
    matrix = [["A", "B"], ["x", ""]]
    filled = forward_fill(matrix, [(2, 1, 2, 2)])  # A2:B2 横向合并
    assert filled[1][1] == "x"
    assert filled[1][0] == "x"


def test_column_letter():
    assert column_letter(1) == "A"
    assert column_letter(27) == "AA"


def test_extract_table_basic():
    matrix = [["ID", "名前"], ["1", "田中"], ["2", "佐藤"]]
    table = extract_table("社員一覧", matrix, "f.xlsx", SheetType.FUNCTION)
    assert isinstance(table, ExcelTable)
    assert table.headers == ["ID", "名前"]
    assert table.extraction_method == "openpyxl"
    assert len(table.rows) == 2
    first = table.rows[0]
    assert isinstance(first["ID"], CellValue)
    assert first["ID"].value == "1"
    assert first["ID"].provenance.sheet_name == "社員一覧"
    assert first["ID"].provenance.column == "A"


def test_extract_table_uses_enum_value():
    matrix = [["ID"], ["1"]]
    table = extract_table("社員", matrix, "f.xlsx", SheetType.FUNCTION)
    assert table.extraction_method == ExtractionMethod.OPENPYXL.value


def test_forward_fill_ignores_invalid_range():
    matrix = [["A"], ["B"]]
    assert forward_fill(matrix, [(0, 1, 2, 1)]) == matrix  # min_row=0 非法 → 不崩溃不改数据
    assert forward_fill(matrix, [(9, 9, 9, 9)]) == matrix  # 越界 → 不崩溃


def test_extract_table_empty_matrix():
    # 空矩阵 → 返回空表（headers/rows 均为空），不崩溃（L 空矩阵分支）
    table = extract_table("空シート", [], "f.xlsx", SheetType.FUNCTION)
    assert table.headers == []
    assert table.rows == []


def test_extract_table_header_row_out_of_range():
    # header_row 越界/负值 → 回落 0（防御分支）
    mat = [["ID", "名前"], ["1", "田中"]]
    t_high = extract_table("社員", mat, "f.xlsx", SheetType.FUNCTION, header_row=9)
    t_neg = extract_table("社員", mat, "f.xlsx", SheetType.FUNCTION, header_row=-1)
    assert t_high.headers == ["ID", "名前"]
    assert t_neg.headers == ["ID", "名前"]