from __future__ import annotations

from datetime import date, datetime
from pathlib import Path
from unittest.mock import patch

from openpyxl import load_workbook

from app.pipeline.column_registry import COLUMNS
from app.pipeline.mapping import FIXED_REPORT_COLUMNS
from app.pipeline.report import TOP_GROUP_HEADERS, ReportRow, write_report


def test_write_report_streaming_preserves_header_and_formats(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    rows = [
        ReportRow(
            file_name="SKO115FZ_01_123456789_20260616_X00001.xml",
            record_id="RID-1",
            operation_index=1,
            operation_fields={"СумОперации": "100.50", "ДатаСообщения": "2026-06-16"},
            participant_fields={},
        )
    ]

    write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    headers = [cell.value for cell in sheet[2]]
    assert headers == list(FIXED_REPORT_COLUMNS)
    assert sheet.freeze_panes == "A3"
    row_values = [
        sheet.cell(row=3, column=index).value
        for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)
    ]
    assert "SKO115FZ_01_123456789_20260616_X00001.xml" in row_values

    date_col_idx = FIXED_REPORT_COLUMNS.index("Дата сообщения") + 1
    assert isinstance(sheet.cell(row=3, column=date_col_idx).value, datetime)
    assert sheet.cell(row=3, column=date_col_idx).number_format == "DD.MM.YYYY"

    sum_col_idx = FIXED_REPORT_COLUMNS.index("Сумма в валюте проведения") + 1
    assert sheet.cell(row=3, column=sum_col_idx).number_format == "#,##0.00"


def test_write_report_contains_top_group_header_row(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    write_report([], destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    assert sheet.cell(row=1, column=1).value == "Служебные поля"
    merged_ranges = {str(rng) for rng in sheet.merged_cells.ranges}
    expected_ranges = set()
    for header in TOP_GROUP_HEADERS:
        if header.start_col > len(FIXED_REPORT_COLUMNS):
            continue
        end_col = min(header.end_col, len(FIXED_REPORT_COLUMNS))
        if header.start_col == end_col:
            continue
        expected_ranges.add(
            f"{_column_letter(header.start_col)}1:{_column_letter(end_col)}1"
        )
    assert merged_ranges == expected_ranges


def test_top_group_headers_follow_registry_report_groups() -> None:
    actual_ranges = tuple(
        (header.start_col, header.end_col) for header in TOP_GROUP_HEADERS
    )
    registry_ranges = tuple(
        (group.start_index, group.end_index) for group in COLUMNS.report_groups()
    )

    assert actual_ranges == registry_ranges


def test_write_report_converts_date_string_to_excel_date(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={"ДатаСообщения": "23/08/2005"},
            participant_fields={},
        )
    ]

    write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    date_col_idx = FIXED_REPORT_COLUMNS.index("Дата сообщения") + 1
    cell = sheet.cell(row=3, column=date_col_idx)
    assert isinstance(cell.value, datetime)
    assert cell.value.date() == date(2005, 8, 23)
    assert cell.number_format == "DD.MM.YYYY"


def test_write_report_keeps_invalid_date_as_text_without_date_format(
    tmp_path: Path,
) -> None:
    destination = tmp_path / "report.xlsx"
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={"ДатаСообщения": "не дата"},
            participant_fields={},
        )
    ]

    write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    date_col_idx = FIXED_REPORT_COLUMNS.index("Дата сообщения") + 1
    cell = sheet.cell(row=3, column=date_col_idx)
    assert cell.value == "не дата"
    assert cell.number_format != "DD.MM.YYYY"


def test_write_report_writes_inn_like_values_as_text(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={"ИННЮЛ": 2820000210.0},
        )
    ]

    write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    inn_col_idx = next(
        index
        for index, name in enumerate(FIXED_REPORT_COLUMNS, start=1)
        if "ИНН" in name
    )
    cell = sheet.cell(row=3, column=inn_col_idx)
    assert cell.value == "2820000210"


def test_write_report_preserves_account_number_as_text(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    fixed_row = {index: "" for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)}
    fixed_row[FIXED_REPORT_COLUMNS.index("Номер счета плательщика") + 1] = (
        "40702156767000000008"
    )
    fixed_row[FIXED_REPORT_COLUMNS.index("Номер счета получателя") + 1] = (
        4.0702156767e19
    )
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={},
        )
    ]

    with patch("app.pipeline.report.build_fixed_row_by_index", return_value=fixed_row):
        write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    payer_col = FIXED_REPORT_COLUMNS.index("Номер счета плательщика") + 1
    receiver_col = FIXED_REPORT_COLUMNS.index("Номер счета получателя") + 1
    assert sheet.cell(row=3, column=payer_col).value == "40702156767000000008"
    assert sheet.cell(row=3, column=receiver_col).value == "40702156767000000000"


def test_write_report_restores_leading_zeros_for_bik_inn_kpp(tmp_path: Path) -> None:
    destination = tmp_path / "report.xlsx"
    fixed_row = {index: "" for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)}
    fixed_row[109] = "1"
    fixed_row[FIXED_REPORT_COLUMNS.index("БИК") + 1] = 41012731
    fixed_row[FIXED_REPORT_COLUMNS.index("ИНН") + 1] = 323086051
    fixed_row[FIXED_REPORT_COLUMNS.index("КПП (ПРИЗНАК ИСБОЮЛ) /Пр ид-ии ФЛ:") + 1] = (
        32601001
    )
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={},
        )
    ]

    with patch("app.pipeline.report.build_fixed_row_by_index", return_value=fixed_row):
        write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    bik_col = FIXED_REPORT_COLUMNS.index("БИК") + 1
    inn_col = next(
        index
        for index, name in enumerate(FIXED_REPORT_COLUMNS, start=1)
        if "ИНН" in name
    )
    kpp_col = FIXED_REPORT_COLUMNS.index("КПП (ПРИЗНАК ИСБОЮЛ) /Пр ид-ии ФЛ:") + 1
    assert sheet.cell(row=3, column=bik_col).value == "041012731"
    assert sheet.cell(row=3, column=inn_col).value == "0323086051"
    assert sheet.cell(row=3, column=kpp_col).value == "032601001"


def test_write_report_shifts_participant_address_block_to_expected_columns(
    tmp_path: Path,
) -> None:
    destination = tmp_path / "report.xlsx"
    fixed_row = {index: "" for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)}
    fixed_row[141] = "г. Благовещенск"
    fixed_row[142] = "675520, 643, 10, Благовещенский р-н, Чигири с, Зеленая ул, 1"
    fixed_row[143] = "675520"
    fixed_row[144] = "643"
    fixed_row[145] = "10"
    fixed_row[146] = "Благовещенский р-н"
    fixed_row[147] = "Чигири с"
    fixed_row[148] = "Зеленая ул"
    fixed_row[149] = "1"
    fixed_row[150] = ""
    fixed_row[151] = ""
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={},
        )
    ]

    with patch("app.pipeline.report.build_fixed_row_by_index", return_value=fixed_row):
        write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    assert sheet.cell(row=3, column=141).value == (
        "675520, 643, 10, Благовещенский р-н, Чигири с, Зеленая ул, 1"
    )
    assert sheet.cell(row=3, column=142).value == "675520"
    assert sheet.cell(row=3, column=143).value == "643"
    assert sheet.cell(row=3, column=144).value == "10"


def test_write_report_does_not_pad_physical_person_identification_as_kpp(
    tmp_path: Path,
) -> None:
    destination = tmp_path / "report.xlsx"
    fixed_row = {index: "" for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)}
    fixed_row[109] = "2"
    fixed_row[122] = "1"
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={},
        )
    ]

    with patch("app.pipeline.report.build_fixed_row_by_index", return_value=fixed_row):
        write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    assert sheet.cell(row=3, column=122).value == "1"


def test_write_report_does_not_assume_kpp_when_participant_type_is_missing(
    tmp_path: Path,
) -> None:
    destination = tmp_path / "report.xlsx"
    fixed_row = {index: "" for index in range(1, len(FIXED_REPORT_COLUMNS) + 1)}
    fixed_row[122] = "1"
    rows = [
        ReportRow(
            file_name="f.xml",
            record_id="RID",
            operation_index=1,
            operation_fields={},
            participant_fields={},
        )
    ]

    with patch("app.pipeline.report.build_fixed_row_by_index", return_value=fixed_row):
        write_report(rows, destination)

    workbook = load_workbook(destination)
    sheet = workbook["Отчет"]
    assert sheet.cell(row=3, column=122).value == "1"


def _column_letter(index: int) -> str:
    value = index
    result = ""
    while value:
        value, remainder = divmod(value - 1, 26)
        result = chr(65 + remainder) + result
    return result