"""Style metadata in the .xlsx viewer (#153 A15): bold, colors, number formats,
merged ranges and freeze panes — plus the endpoint wiring."""

from __future__ import annotations

from pathlib import Path

import pytest

openpyxl = pytest.importorskip("openpyxl")

VAULT = "TestVault"


@pytest.fixture
def styled_book(test_vault_dir: str) -> str:
    """A workbook with a bold red-font header, a filled cell, a merge and a freeze."""
    from openpyxl.styles import Font, PatternFill

    path = Path(test_vault_dir) / "styles.xlsx"
    wb = openpyxl.Workbook()
    ws = wb.active
    ws.title = "Data"
    ws["A1"] = "En-tête"
    ws["A1"].font = Font(bold=True, italic=True, color="FFCC0000")
    ws["B1"] = "Total"
    ws["B1"].fill = PatternFill("solid", fgColor="FFFFEE99")
    ws["B2"] = 1234.5
    ws["B2"].number_format = "#,##0.00"
    ws["C3"] = "fusionnée"
    ws.merge_cells("C3:D3")
    ws["C3"].value = "fusionnée"
    ws.freeze_panes = "A2"
    wb.save(path)
    return str(path)


class TestStyleReading:
    def test_bold_italic_and_font_color(self, styled_book):
        from backend.xlsx_reader import read_sheet_styles

        styles = read_sheet_styles(Path(styled_book), "Data")
        a1 = styles["A1"]
        assert "font-weight:600" in a1["style"]
        assert "font-style:italic" in a1["style"]
        assert a1["style"].startswith("color:#cc0000")

    def test_background_fill_is_read(self, styled_book):
        from backend.xlsx_reader import read_sheet_styles

        styles = read_sheet_styles(Path(styled_book), "Data")
        assert "background:#ffee99" in styles["B1"]["style"]

    def test_number_format_is_signalled(self, styled_book):
        from backend.xlsx_reader import read_sheet_styles

        styles = read_sheet_styles(Path(styled_book), "Data")
        assert "font-family" in styles["B2"]["style"]

    def test_plain_cell_has_no_entry(self, styled_book):
        from backend.xlsx_reader import read_sheet_styles

        styles = read_sheet_styles(Path(styled_book), "Data")
        assert "A2" not in styles  # untouched cell

    def test_merges_and_freeze(self, styled_book):
        from backend.xlsx_reader import read_sheet_freeze, read_sheet_merges

        assert read_sheet_merges(Path(styled_book), "Data") == ["C3:D3"]
        assert read_sheet_freeze(Path(styled_book), "Data") == "A2"

    def test_unknown_sheet_yields_empty(self, styled_book):
        from backend.xlsx_reader import read_sheet_styles

        assert read_sheet_styles(Path(styled_book), "Nope") == {}

    def test_broken_file_yields_empty(self, test_vault_dir):
        from backend.xlsx_reader import read_sheet_styles

        bad = Path(test_vault_dir) / "broken-styles.xlsx"
        bad.write_bytes(b"not a zip")
        assert read_sheet_styles(bad, "Data") == {}


class TestEndpointWiring:
    def test_read_response_carries_styles_merges_freeze(self, client, styled_book):
        resp = client.get(f"/api/file/{VAULT}", params={"path": "styles.xlsx"})
        assert resp.status_code == 200
        sheet = resp.json()["xlsx_sheets"][0]
        assert sheet["styles"]["A1"].startswith("color:#cc0000")
        assert sheet["aligns"] == {} or isinstance(sheet["aligns"], dict)
        assert sheet["merges"] == ["C3:D3"]
        assert sheet["freeze"] == "A2"

    def test_rendered_html_carries_the_inline_style(self, client, styled_book):
        resp = client.get(f"/api/file/{VAULT}", params={"path": "styles.xlsx"})
        html = resp.json()["xlsx_sheets"][0]["html"]
        assert 'data-cell="A1" style="' in html
        assert "font-weight:600" in html