# Licensed under a 3-clause BSD style license - see LICENSE.rst
"""
Test for mivot.seekers.annotation_seeker.py
"""
import pytest
try:
    from defusedxml import ElementTree as etree
except ImportError:
    from xml.etree import ElementTree as etree
from astropy.utils.data import get_pkg_data_filename
from pyvo.mivot.seekers.annotation_seeker import AnnotationSeeker
from pyvo.mivot.utils.dict_utils import DictUtils
from pyvo.mivot.version_checker import check_astropy_version
from pyvo.mivot.viewer import MivotViewer
from . import XMLOutputChecker


@pytest.fixture
def a_seeker():
    m_viewer = MivotViewer(
        get_pkg_data_filename("data/test.mivot_viewer.xml"),
        tableref="Results"
    )
    return AnnotationSeeker(m_viewer._mapping_block)


@pytest.mark.skipif(not check_astropy_version(), reason="need astropy 6+")
def test_multiple_templates():
    """
    Try to create an AnnotationSeeker with a mapping_block containing multiple TEMPLATES.
    """
    mapping_block = XMLOutputChecker.xmltree_from_file(
        get_pkg_data_filename("data/reference/multiple_templates.xml"))
    with pytest.raises(Exception, match="TEMPLATES without tableref must be unique"):
        AnnotationSeeker(mapping_block.getroot())


@pytest.mark.skipif(not check_astropy_version(), reason="need astropy 6+")
def test_all_reverts(a_seeker):
    # Checks the GLOBALS block given by the AnnotationSeeker
    # by comparing it to the content of the file test.0.1.xml
    XMLOutputChecker.assertXmltreeEqualsFile(a_seeker.globals_block,
                                     get_pkg_data_filename("data/reference/annotation_seeker.0.1.xml"))
    # Checks the TEMPLATES block given by the AnnotationSeeker
    # by comparing it to the content of the file test.0.2.xml
    XMLOutputChecker.assertXmltreeEqualsFile(a_seeker.get_templates_block("Results"),
                                     get_pkg_data_filename("data/reference/annotation_seeker.0.2.xml"))
    # Checks the list of all the tableref found by the AnnotationSeeker
    assert list(a_seeker.get_templates_tableref()) == ['_PKTable', 'Results']
    # a_seeker should have only 2 COLLECTIONS in GLOBALS: _CoordinateSystems and _Datasets
    assert len(a_seeker.get_globals_collections()) == 2
    # a_seeker should have only 1 INSTANCES in GLOBALS: _tg1
    assert len(a_seeker.get_globals_instances()) == 1
    assert a_seeker.get_globals_instance_dmtypes() == ['ds:experiment.Target']
    assert (a_seeker.get_globals_instance_dmids()
            == ['_timesys', '_spacesys1', '_photsys_G', '_photsys_RP',
                '_photsys_BP', '_ds1', '_tg1'])
    assert a_seeker.get_globals_collection_dmids() == ['_CoordinateSystems', '_Datasets']
    selection = a_seeker.get_instance_by_dmtype("coords")
    assert len(selection["GLOBALS"]) == 5
    for ele in selection["GLOBALS"]:
        assert ele.get("dmtype").startswith("coords")
    assert len(selection["TEMPLATES"]["_PKTable"]) == 0
    assert len(selection["TEMPLATES"]["Results"]) == 3
    for _, table_sel in selection["TEMPLATES"].items():
        for ele in table_sel:
            assert ele.get("dmtype").startswith("coords")
    with pytest.raises(Exception, match="INSTANCE with PRIMARY_KEY = wrong_key_value "
                                        "in COLLECTION dmid wrong_key_value not found"):
        a_seeker.get_collection_item_by_primarykey("_Datasets", "wrong_key_value")
    pksel = a_seeker.get_collection_item_by_primarykey("_Datasets", "5813181197970338560")
    XMLOutputChecker.assertXmltreeEqualsFile(pksel,
                                     get_pkg_data_filename("data/reference/annotation_seeker.0.4.xml"))
    with (pytest.raises(Exception, match="More than one INSTANCE with "
                                         "PRIMARY_KEY = G found in COLLECTION dmid G")):
        double_key = etree.fromstring("""<PRIMARY_KEY dmtype="ivoa:string" value="G"/>""")
        a_seeker.get_collection_item_by_primarykey("_CoordinateSystems", "G"
                                                   ).append(double_key)
        a_seeker.get_collection_item_by_primarykey("_CoordinateSystems", "G")
    with pytest.raises(Exception, match="INSTANCE with PRIMARY_KEY = wrong_key "
                                        "in COLLECTION dmid wrong_key not found"):
        a_seeker.get_collection_item_by_primarykey("_CoordinateSystems", "wrong_key")
    assert a_seeker.get_instance_dmtypes() == DictUtils.read_dict_from_file(
        get_pkg_data_filename("data/reference/instance_dmtypes.json"))
    assert a_seeker.get_templates_instance_by_dmid("Results", "wrong_dmid") is None
    assert a_seeker.get_templates_instance_by_dmid("Results", "_ts_data").get("dmtype") == "cube:NDPoint"
    assert a_seeker.get_globals_instance_from_collection(
        "_CoordinateSystems", "ICRS").get("dmtype") == "coords:SpaceSys"
    assert a_seeker.get_globals_instance_from_collection("wrong_dmid", "ICRS") is None
