# pyright: reportPrivateUsage=false

import os
import pathlib
from tempfile import SpooledTemporaryFile
from typing import Dict, List

import docx
import pytest
from docx.document import Document

from unstructured.chunking.title import chunk_by_title
from unstructured.documents.elements import (
    Address,
    Element,
    Footer,
    Header,
    ListItem,
    NarrativeText,
    Table,
    TableChunk,
    Text,
    Title,
)
from unstructured.partition.doc import partition_doc
from unstructured.partition.docx import _DocxPartitioner, partition_docx
from unstructured.partition.json import partition_json
from unstructured.staging.base import elements_to_json


@pytest.fixture()
def mock_document():
    document = docx.Document()

    document.add_paragraph("These are a few of my favorite things:", style="Heading 1")
    # NOTE(robinson) - this should get picked up as a list item due to the •
    document.add_paragraph("• Parrots", style="Normal")
    # NOTE(robinson) - this should get dropped because it's empty
    document.add_paragraph("• ", style="Normal")
    document.add_paragraph("Hockey", style="List Bullet")
    # NOTE(robinson) - this should get dropped because it's empty
    document.add_paragraph("", style="List Bullet")
    # NOTE(robinson) - this should get picked up as a title
    document.add_paragraph("Analysis", style="Normal")
    # NOTE(robinson) - this should get dropped because it is empty
    document.add_paragraph("", style="Normal")
    # NOTE(robinson) - this should get picked up as a narrative text
    document.add_paragraph("This is my first thought. This is my second thought.", style="Normal")
    document.add_paragraph("This is my third thought.", style="Body Text")
    # NOTE(robinson) - this should just be regular text
    document.add_paragraph("2023")
    # NOTE(robinson) - this should be an address
    document.add_paragraph("DOYLESTOWN, PA 18901")

    return document


@pytest.fixture()
def mock_document_filename(mock_document: Document, tmp_path: pathlib.Path) -> str:
    filename = str(tmp_path / "mock_document.docx")
    print(f"filename = {filename}")
    mock_document.save(filename)
    return filename


@pytest.fixture()
def expected_elements():
    return [
        Title("These are a few of my favorite things:"),
        ListItem("Parrots"),
        ListItem("Hockey"),
        Title("Analysis"),
        NarrativeText("This is my first thought. This is my second thought."),
        NarrativeText("This is my third thought."),
        Text("2023"),
        Address("DOYLESTOWN, PA 18901"),
    ]


@pytest.fixture()
def expected_emphasized_texts():
    return [
        {"text": "bold", "tag": "b"},
        {"text": "italic", "tag": "i"},
        {"text": "bold-italic", "tag": "b"},
        {"text": "bold-italic", "tag": "i"},
    ]


@pytest.fixture()
def expected_emphasized_text_contents():
    return ["bold", "italic", "bold-italic", "bold-italic"]


@pytest.fixture()
def expected_emphasized_text_tags():
    return ["b", "i", "b", "i"]


def test_partition_docx_from_filename(
    mock_document_filename: str,
    expected_elements: List[Element],
):
    elements = partition_docx(filename=mock_document_filename)

    assert elements == expected_elements
    assert elements[0].metadata.page_number is None
    for element in elements:
        assert element.metadata.filename == "mock_document.docx"


def test_partition_docx_from_filename_with_metadata_filename(mock_document, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)
    elements = partition_docx(filename=filename, metadata_filename="test")
    assert all(element.metadata.filename == "test" for element in elements)


def test_partition_docx_with_spooled_file(mock_document, expected_elements, tmpdir):
    # Test that the partition_docx function can handle a SpooledTemporaryFile
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    with open(filename, "rb") as test_file:
        spooled_temp_file = SpooledTemporaryFile()
        spooled_temp_file.write(test_file.read())
        spooled_temp_file.seek(0)
        elements = partition_docx(file=spooled_temp_file)
        assert elements == expected_elements
        for element in elements:
            assert element.metadata.filename is None


def test_partition_docx_from_file(mock_document, expected_elements, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    with open(filename, "rb") as f:
        elements = partition_docx(file=f)
    assert elements == expected_elements
    for element in elements:
        assert element.metadata.filename is None


def test_partition_docx_from_file_with_metadata_filename(mock_document, expected_elements, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    with open(filename, "rb") as f:
        elements = partition_docx(file=f, metadata_filename="test")
    assert elements == expected_elements
    for element in elements:
        assert element.metadata.filename == "test"


def test_partition_docx_raises_with_both_specified(mock_document, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    with open(filename, "rb") as f, pytest.raises(ValueError):
        partition_docx(filename=filename, file=f)


def test_partition_docx_raises_with_neither():
    with pytest.raises(ValueError):
        partition_docx()


def test_partition_docx_processes_table(filename="example-docs/fake_table.docx"):
    elements = partition_docx(filename=filename)

    assert isinstance(elements[0], Table)
    assert (
        elements[0].metadata.text_as_html
        == """<table>
<thead>
<tr><th>Header Col 1   </th><th>Header Col 2  </th></tr>
</thead>
<tbody>
<tr><td>Lorem ipsum    </td><td>A Link example</td></tr>
</tbody>
</table>"""
    )
    assert elements[0].metadata.filename == "fake_table.docx"


def test_partition_docx_grabs_header_and_footer(filename="example-docs/handbook-1p.docx"):
    elements = partition_docx(filename=filename)
    assert elements[0] == Header("US Trustee Handbook")
    assert elements[-1] == Footer("Copyright")
    for element in elements:
        assert element.metadata.filename == "handbook-1p.docx"


def test_partition_docx_includes_pages_if_present(filename="example-docs/handbook-1p.docx"):
    elements = partition_docx(filename=filename, include_page_breaks=False)
    assert "PageBreak" not in [elem.category for elem in elements]
    assert elements[1].metadata.page_number == 1
    assert elements[-2].metadata.page_number == 2
    for element in elements:
        assert element.metadata.filename == "handbook-1p.docx"


def test_partition_docx_includes_page_breaks(filename="example-docs/handbook-1p.docx"):
    elements = partition_docx(filename=filename, include_page_breaks=True)
    assert "PageBreak" in [elem.category for elem in elements]
    assert elements[1].metadata.page_number == 1
    assert elements[-2].metadata.page_number == 2
    for element in elements:
        assert element.metadata.filename == "handbook-1p.docx"


def test_partition_docx_detects_lists(filename="example-docs/example-list-items-multiple.docx"):
    elements = partition_docx(filename=filename)
    list_elements = []
    narrative_elements = []
    for element in elements:
        if isinstance(element, ListItem):
            list_elements.append(element)
        else:
            narrative_elements.append(element)
    assert elements[-1] == ListItem(
        "This is simply dummy text of the printing and typesetting industry.",
    )
    assert len(list_elements) == 10


def test_partition_docx_from_filename_exclude_metadata(filename="example-docs/handbook-1p.docx"):
    elements = partition_docx(filename=filename, include_metadata=False)
    assert elements[0].metadata.filetype is None
    assert elements[0].metadata.page_name is None
    assert elements[0].metadata.filename is None


def test_partition_docx_from_file_exclude_metadata(mock_document, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    with open(filename, "rb") as f:
        elements = partition_docx(file=f, include_metadata=False)
    assert elements[0].metadata.filetype is None
    assert elements[0].metadata.page_name is None
    assert elements[0].metadata.filename is None


def test_partition_docx_metadata_date(
    mocker,
    filename="example-docs/fake.docx",
):
    mocked_last_modification_date = "2029-07-05T09:24:28"

    mocker.patch(
        "unstructured.partition.docx.get_last_modified_date",
        return_value=mocked_last_modification_date,
    )

    elements = partition_docx(filename=filename)

    assert elements[0].metadata.last_modified == mocked_last_modification_date


def test_partition_docx_metadata_date_with_custom_metadata(
    mocker,
    filename="example-docs/fake.docx",
):
    mocked_last_modification_date = "2029-07-05T09:24:28"
    expected_last_modified_date = "2020-07-05T09:24:28"

    mocker.patch(
        "unstructured.partition.docx.get_last_modified_date",
        return_value=mocked_last_modification_date,
    )

    elements = partition_docx(
        filename=filename,
        metadata_last_modified=expected_last_modified_date,
    )

    assert elements[0].metadata.last_modified == expected_last_modified_date


def test_partition_docx_from_file_metadata_date(
    mocker,
    filename="example-docs/fake.docx",
):
    mocked_last_modification_date = "2029-07-05T09:24:28"

    mocker.patch(
        "unstructured.partition.docx.get_last_modified_date_from_file",
        return_value=mocked_last_modification_date,
    )

    with open(filename, "rb") as f:
        elements = partition_docx(file=f)

    assert elements[0].metadata.last_modified == mocked_last_modification_date


def test_partition_docx_from_file_metadata_date_with_custom_metadata(
    mocker,
    filename="example-docs/fake.docx",
):
    mocked_last_modification_date = "2029-07-05T09:24:28"
    expected_last_modified_date = "2020-07-05T09:24:28"

    mocker.patch(
        "unstructured.partition.docx.get_last_modified_date_from_file",
        return_value=mocked_last_modification_date,
    )
    with open(filename, "rb") as f:
        elements = partition_docx(file=f, metadata_last_modified=expected_last_modified_date)

    assert elements[0].metadata.last_modified == expected_last_modified_date


def test_partition_docx_from_file_without_metadata_date(
    filename="example-docs/fake.docx",
):
    """Test partition_docx() with file that are not possible to get last modified date"""

    with open(filename, "rb") as f:
        sf = SpooledTemporaryFile()
        sf.write(f.read())
        sf.seek(0)
        elements = partition_docx(file=sf)

    assert elements[0].metadata.last_modified is None


def test_get_emphasized_texts_from_paragraph(expected_emphasized_texts: List[Dict[str, str]]):
    partitioner = _DocxPartitioner(
        "example-docs/fake-doc-emphasized-text.docx",
        None,
        None,
        False,
        None,
    )
    paragraph = partitioner._document.paragraphs[1]
    emphasized_texts = list(partitioner._iter_paragraph_emphasis(paragraph))
    assert paragraph.text == "I am a bold italic bold-italic text."
    assert emphasized_texts == expected_emphasized_texts

    paragraph = partitioner._document.paragraphs[2]
    emphasized_texts = list(partitioner._iter_paragraph_emphasis(paragraph))
    assert paragraph.text == ""
    assert emphasized_texts == []

    paragraph = partitioner._document.paragraphs[3]
    emphasized_texts = list(partitioner._iter_paragraph_emphasis(paragraph))
    assert paragraph.text == "I am a normal text."
    assert emphasized_texts == []


def test_iter_table_emphasis(expected_emphasized_texts: List[Dict[str, str]]):
    partitioner = _DocxPartitioner(
        "example-docs/fake-doc-emphasized-text.docx",
        None,
        None,
        False,
        None,
    )
    table = partitioner._document.tables[0]
    emphasized_texts = list(partitioner._iter_table_emphasis(table))
    assert emphasized_texts == expected_emphasized_texts


def test_table_emphasis(
    expected_emphasized_text_contents: List[str],
    expected_emphasized_text_tags: List[str],
):
    partitioner = _DocxPartitioner(
        "example-docs/fake-doc-emphasized-text.docx",
        None,
        None,
        False,
        None,
    )
    table = partitioner._document.tables[0]
    emphasized_text_contents, emphasized_text_tags = partitioner._table_emphasis(table)
    assert emphasized_text_contents == expected_emphasized_text_contents
    assert emphasized_text_tags == expected_emphasized_text_tags


@pytest.mark.parametrize(
    ("filename", "partition_func"),
    [
        ("fake-doc-emphasized-text.docx", partition_docx),
        ("fake-doc-emphasized-text.doc", partition_doc),
    ],
)
def test_partition_docx_grabs_emphasized_texts(
    filename,
    partition_func,
    expected_emphasized_text_contents,
    expected_emphasized_text_tags,
):
    elements = partition_func(filename=f"example-docs/{filename}")

    assert isinstance(elements[0], Table)
    assert elements[0].metadata.emphasized_text_contents == expected_emphasized_text_contents
    assert elements[0].metadata.emphasized_text_tags == expected_emphasized_text_tags

    assert elements[1] == NarrativeText("I am a bold italic bold-italic text.")
    assert elements[1].metadata.emphasized_text_contents == expected_emphasized_text_contents
    assert elements[1].metadata.emphasized_text_tags == expected_emphasized_text_tags

    assert elements[2] == NarrativeText("I am a normal text.")
    assert elements[2].metadata.emphasized_text_contents is None
    assert elements[2].metadata.emphasized_text_tags is None


def test_partition_docx_with_json(mock_document, expected_elements, tmpdir):
    filename = os.path.join(tmpdir.dirname, "mock_document.docx")
    mock_document.save(filename)

    elements = partition_docx(filename=filename)
    test_elements = partition_json(text=elements_to_json(elements))

    assert len(elements) == len(test_elements)
    assert elements[0].metadata.page_number == test_elements[0].metadata.page_number
    assert elements[0].metadata.filename == test_elements[0].metadata.filename
    for i in range(len(elements)):
        assert elements[i] == test_elements[i]


def test_parse_category_depth_by_style():
    partitioner = _DocxPartitioner("example-docs/category-level.docx", None, None, False, None)

    # Category depths are 0-indexed and relative to the category type
    # Title, list item, bullet, narrative text, etc.
    test_cases = [
        (0, "Call me Ishmael."),
        (0, "A Heading 1"),
        (0, "Whenever I find myself growing grim"),
        (0, "A top level list item"),
        (1, "Next level"),
        (1, "Same"),
        (0, "Second top-level list item"),
        (0, "whenever I find myself involuntarily"),
        (0, ""),  # Empty paragraph
        (1, "A Heading 2"),
        (0, "This is my substitute for pistol and ball"),
        (0, "Another Heading 1"),
        (0, "There now is your insular city"),
    ]

    paragraphs = partitioner._document.paragraphs
    for idx, (depth, text) in enumerate(test_cases):
        paragraph = paragraphs[idx]
        actual_depth = partitioner._parse_category_depth_by_style(paragraph)
        assert text in paragraph.text, f"paragraph[{[idx]}].text does not contain {text}"
        assert (
            actual_depth == depth
        ), f"expected paragraph[{idx}] to have depth=={depth}, got {actual_depth}"


def test_parse_category_depth_by_style_name():
    partitioner = _DocxPartitioner(None, None, None, False, None)

    test_cases = [
        (0, "Heading 1"),
        (1, "Heading 2"),
        (2, "Heading 3"),
        (1, "Subtitle"),
        (0, "List"),
        (1, "List 2"),
        (2, "List 3"),
        (0, "List Bullet"),
        (1, "List Bullet 2"),
        (2, "List Bullet 3"),
        (0, "List Number"),
        (1, "List Number 2"),
        (2, "List Number 3"),
    ]

    for idx, (depth, text) in enumerate(test_cases):
        assert (
            partitioner._parse_category_depth_by_style_name(text) == depth
        ), f"test case {test_cases[idx]} failed"


def test_parse_category_depth_by_style_ilvl():
    partitioner = _DocxPartitioner(None, None, None, False, None)
    assert partitioner._parse_category_depth_by_style_ilvl() == 0


def test_add_chunking_strategy_on_partition_docx_default_args(
    filename="example-docs/handbook-1p.docx",
):
    chunk_elements = partition_docx(filename, chunking_strategy="by_title")
    elements = partition_docx(filename)
    chunks = chunk_by_title(elements)

    assert chunk_elements != elements
    assert chunk_elements == chunks


def test_add_chunking_strategy_on_partition_docx(
    filename="example-docs/fake-doc-emphasized-text.docx",
):
    chunk_elements = partition_docx(
        filename,
        chunking_strategy="by_title",
        max_characters=9,
        combine_text_under_n_chars=5,
    )
    elements = partition_docx(filename)
    chunks = chunk_by_title(elements, max_characters=9, combine_text_under_n_chars=5)
    # remove the last element of the TableChunk list because it will be the leftover slice
    # and not necessarily the max_characters len
    table_chunks = [chunk for chunk in chunks if isinstance(chunk, TableChunk)][:-1]
    other_chunks = [chunk for chunk in chunks if not isinstance(chunk, TableChunk)]
    for table_chunk in table_chunks:
        assert len(table_chunk.text) == 9
    for chunk in other_chunks:
        assert len(chunk.text) >= 5
    assert chunk_elements != elements
    assert chunk_elements == chunks