import shutil
from pathlib import Path

import pytest

from photools3.metadata_writer import (
    XMP_KEYS_CAPTION,
    MetadataWriter,
)
from test.test_photo import PATHS_DNG_EXAMPLES


@pytest.fixture
def make_dng_file(tmp_path):
    def _make(index: int = 0) -> Path:
        src = PATHS_DNG_EXAMPLES[index]
        dst = tmp_path / f"copy_{index}_{src.name}"
        shutil.copy(src, dst)
        return dst

    return _make


def test_read_metadata(make_dng_file):
    """primitive test for `MetadataWriter`"""
    file_path = make_dng_file()
    result = MetadataWriter(file_path)
    assert result


@pytest.mark.parametrize("pic_no", range(len(PATHS_DNG_EXAMPLES)))
def test_read_metadata_sidecar_path(make_dng_file, pic_no):
    file_path = make_dng_file(pic_no)
    metadata_writer = MetadataWriter(file_path)
    print(metadata_writer.sidecar_path)
    assert isinstance(metadata_writer.sidecar_path, Path)
    assert str(metadata_writer.sidecar_path).lower().endswith(".dng.xmp")


@pytest.mark.parametrize("pic_no", range(len(PATHS_DNG_EXAMPLES)))
def test_set_caption(make_dng_file, pic_no):
    metadata_writer = MetadataWriter(make_dng_file(pic_no))
    metadata_writer.write_caption("This is a test")
    result = metadata_writer.get_metadata(XMP_KEYS_CAPTION[0])
    assert result


def test_set_caption_on_existing():
    # TODO
    ...


def test_set_keywords():
    # TODO
    ...


def test_set_keywords_on_existing():
    # TODO
    ...