import sys
from pathlib import Path

from lxml import etree as ET

from mods4pandas.mods4pandas import pages_to_dict


TESTS_DATA_DIR = Path(__file__).parent / "data"


def removeprefix(s, prefix):
    if sys.version_info < (3, 9):
        return s[len(prefix) :] if s.startswith(prefix) else s
    else:
        return s.removeprefix(prefix)


def test_page_info():
    """Test creation of page_info"""
    mets = ET.parse(TESTS_DATA_DIR / "mets-mods" / "PPN821507109-1361-pages.xml")
    page_info = pages_to_dict(mets)

    # We have 1361 pages for this one work.
    assert len(page_info) == 1361
    assert all(p["ppn"] == "PPN821507109" for p in page_info)

    # Look closer at an interesting page
    from pprint import pprint

    pprint(page_info[0])
    page_info_page = next(p for p in page_info if p["ID"] == "PHYS_0005")

    assert (
        page_info_page["fileGrp_PRESENTATION_file_FLocat_href"]
        == "file:///goobi/tiff001/sbb/PPN821507109/00000005.tif"
    )

    # This is a title page with an illustration, check that we correctly got this info from the
    # structMap.
    struct_types = sorted(
        removeprefix(k, "structMap-LOGICAL_TYPE_")
        for k, v in page_info_page.items()
        if k.startswith("structMap-LOGICAL_TYPE_") and v == 1
    )
    assert struct_types == ["illustration", "monograph", "title_page"]


def test_page_info_multivolume_work():
    """Test creation of page_info for multivolume_work"""
    mets = ET.parse(
        TESTS_DATA_DIR
        / "mets-mods"
        / "PPN717884805-multivolume_work-no-structMap-PHYSICAL.xml"
    )
    page_info = pages_to_dict(mets)
    assert page_info == []