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"""Test silx.io.convert.write_to_h5"""


import h5py
import numpy
from silx.io import spech5

from silx.io.convert import write_to_h5
from silx.io.dictdump import h5todict
from silx.io import commonh5


def test_with_commonh5(tmp_path):
    """Test write_to_h5 with commonh5 input"""
    fobj = commonh5.File("filename.txt", mode="w")
    group = fobj.create_group("group")
    dataset = group.create_dataset("dataset", data=numpy.array(50))
    group["soft_link"] = dataset  # Create softlink

    output_filepath = tmp_path / "output.h5"
    write_to_h5(fobj, str(output_filepath))

    assert h5todict(str(output_filepath)) == {
        "group": {"dataset": numpy.array(50), "soft_link": numpy.array(50)},
    }
    with h5py.File(output_filepath, mode="r") as h5file:
        soft_link = h5file.get("/group/soft_link", getlink=True)
        assert isinstance(soft_link, h5py.SoftLink)
        assert soft_link.path == "/group/dataset"


def test_with_hdf5(tmp_path):
    """Test write_to_h5 with HDF5 file input"""
    filepath = tmp_path / "base.h5"
    with h5py.File(filepath, mode="w") as h5file:
        h5file["group/dataset"] = 50
        h5file["group/soft_link"] = h5py.SoftLink("/group/dataset")
        h5file["group/external_link"] = h5py.ExternalLink("base.h5", "/group/dataset")

    output_filepath = tmp_path / "output.h5"
    write_to_h5(str(filepath), str(output_filepath))
    assert h5todict(str(output_filepath)) == {
        "group": {"dataset": 50, "soft_link": 50},
    }
    with h5py.File(output_filepath, mode="r") as h5file:
        soft_link = h5file.get("group/soft_link", getlink=True)
        assert isinstance(soft_link, h5py.SoftLink)
        assert soft_link.path == "/group/dataset"


def test_with_spech5(tmp_path):
    """Test write_to_h5 with SpecH5 input"""
    filepath = tmp_path / "file.spec"
    filepath.write_bytes(
        bytes(
            """#F /tmp/sf.dat

#S 1 cmd
#L a  b
1 2
""",
            encoding="ascii",
        )
    )

    output_filepath = tmp_path / "output.h5"
    with spech5.SpecH5(str(filepath)) as spech5file:
        write_to_h5(spech5file, str(output_filepath))
    print(h5todict(str(output_filepath)))

    def assert_equal(item1, item2):
        if isinstance(item1, dict):
            assert tuple(item1.keys()) == tuple(item2.keys())
            for key in item1.keys():
                assert_equal(item1[key], item2[key])
        else:
            numpy.array_equal(item1, item2)

    assert_equal(
        h5todict(str(output_filepath)),
        {
            "1.1": {
                "instrument": {
                    "positioners": {},
                    "specfile": {
                        "file_header": ["#F /tmp/sf.dat"],
                        "scan_header": ["#S 1 cmd", "#L a  b"],
                    },
                },
                "measurement": {
                    "a": [1.0],
                    "b": [2.0],
                },
                "start_time": "",
                "title": "cmd",
            },
        },
    )