from __future__ import annotations

from pathlib import Path
from unittest.mock import patch

from PIL import Image


def test_caption_group_assignments_respects_columns() -> None:
    from paperforge.worker.ocr import caption_group_assignments

    blocks = [
        {
            "block_id": 1,
            "block_label": "chart",
            "block_bbox": [80, 116, 546, 434],
            "block_content": "",
        },
        {
            "block_id": 2,
            "block_label": "figure_title",
            "block_bbox": [66, 446, 559, 628],
            "block_content": "Figure 1. Left column figure.",
        },
        {
            "block_id": 3,
            "block_label": "chart",
            "block_bbox": [598, 114, 1063, 493],
            "block_content": "",
        },
        {
            "block_id": 4,
            "block_label": "figure_title",
            "block_bbox": [584, 503, 1079, 744],
            "block_content": "Figure 2. Right column figure.",
        },
    ]

    figure_map, _table_map = caption_group_assignments(blocks)

    left_ids = [item["block_id"] for item in figure_map[2]]
    right_ids = [item["block_id"] for item in figure_map[4]]

    assert left_ids == [1]
    assert right_ids == [3]


def test_render_page_blocks_links_media_for_text_caption(tmp_path: Path) -> None:
    from paperforge.worker.ocr import render_page_blocks

    vault = tmp_path / "vault"
    images_dir = vault / "System" / "PaperForge" / "ocr" / "KEY" / "images"
    page_cache_dir = vault / "System" / "PaperForge" / "ocr" / "KEY" / "pages"
    images_dir.mkdir(parents=True)
    page_cache_dir.mkdir(parents=True)

    page_image = page_cache_dir / "page_009.png"
    Image.new("RGB", (1200, 1600), color="white").save(page_image)

    result = {
        "prunedResult": {
            "width": 1200,
            "height": 1600,
            "parsing_res_list": [
                {
                    "block_id": 1,
                    "block_label": "vision_footnote",
                    "block_bbox": [449, 168, 738, 219],
                    "block_content": "No Electrical Stimulation\nElectrical Stimulation 100 mV/mm",
                },
                {
                    "block_id": 2,
                    "block_label": "chart",
                    "block_bbox": [429, 237, 733, 485],
                    "block_content": "",
                },
                {
                    "block_id": 3,
                    "block_label": "chart",
                    "block_bbox": [772, 238, 1071, 484],
                    "block_content": "",
                },
                {
                    "block_id": 4,
                    "block_label": "chart",
                    "block_bbox": [363, 504, 742, 757],
                    "block_content": "",
                },
                {
                    "block_id": 5,
                    "block_label": "chart",
                    "block_bbox": [766, 503, 1075, 750],
                    "block_content": "",
                },
                {
                    "block_id": 6,
                    "block_label": "chart",
                    "block_bbox": [428, 774, 729, 1016],
                    "block_content": "",
                },
                {
                    "block_id": 7,
                    "block_label": "chart",
                    "block_bbox": [765, 768, 1075, 1013],
                    "block_content": "",
                },
                {
                    "block_id": 8,
                    "block_label": "figure_title",
                    "block_bbox": [374, 1046, 1143, 1077],
                    "block_content": "Days post culture in osteogenic differentiation supplemented medium",
                },
                {
                    "block_id": 9,
                    "block_label": "text",
                    "block_bbox": [373, 1101, 1143, 1258],
                    "block_content": "Figure 4 RT-qPCR results. Temporal changes in messenger RNA (mRNA) of (A) Runx2, (B) Osteopontin and (C) Col1A2.",
                },
            ],
        },
        "inputImage": "",
    }

    with patch("paperforge.worker.ocr.render_pdf_page_cached", return_value=page_image):
        rendered = render_page_blocks(vault, 9, result, images_dir, page_cache_dir, pdf_doc=None)

    assert any(line.startswith("![[") for line in rendered)
    assert any(line.startswith("Figure 4 RT-qPCR results.") for line in rendered)


def test_embedded_figure_text_excludes_body_paragraph_like_text() -> None:
    from paperforge.worker.ocr import is_embedded_figure_text_block

    blocks = [
        {
            "block_id": 1,
            "block_label": "paragraph_title",
            "block_bbox": [80, 530, 269, 554],
            "block_content": "Immunohistochemistry",
        },
        {
            "block_id": 2,
            "block_label": "text",
            "block_bbox": [78, 577, 498, 915],
            "block_content": (
                "To determine which cells express these proteins, we performed immunohistochemical analyses "
                "for Tyk2, S100A9, and ZNF 217 from the same tissues used in 2-DE. Positively stained cells "
                "of Tyk2 and ZNF 217 were located at cytoplasm of epithelial cells. Although the majority of "
                "cases of SCC and adjacent normal tissues showed cytoplasmic S100A9 positivity of epithelial "
                "cells, some cases also showed nuclear S100A9 positivity, as shown in Fig. 3."
            ),
        },
        {
            "block_id": 3,
            "block_label": "image",
            "block_bbox": [272, 964, 610, 1421],
            "block_content": "",
        },
        {
            "block_id": 4,
            "block_label": "image",
            "block_bbox": [620, 964, 933, 1421],
            "block_content": "",
        },
        {
            "block_id": 5,
            "block_label": "figure_title",
            "block_bbox": [78, 1448, 1129, 1511],
            "block_content": (
                "Fig. 3. Immunohistochemical staining in SCC and adjacent normal tissues. Sections from SCC and "
                "nontumorous tissue were immunostained with antibodies against Tyk2 (left), S100A9 (middle), "
                "and ZNF 217 (right)."
            ),
        },
    ]

    assert is_embedded_figure_text_block(blocks[1], blocks, page_width=1200, page_height=1600) is False


def test_embedded_figure_text_keeps_narrow_in_figure_note() -> None:
    from paperforge.worker.ocr import is_embedded_figure_text_block

    blocks = [
        {
            "block_id": 1,
            "block_label": "chart",
            "block_bbox": [320, 260, 620, 1080],
            "block_content": "",
        },
        {
            "block_id": 2,
            "block_label": "chart",
            "block_bbox": [640, 260, 920, 1080],
            "block_content": "",
        },
        {
            "block_id": 3,
            "block_label": "text",
            "block_bbox": [470, 1090, 760, 1160],
            "block_content": "Patient A\nAge 42\nHPV16 positive",
        },
        {
            "block_id": 4,
            "block_label": "figure_title",
            "block_bbox": [300, 1180, 980, 1250],
            "block_content": "Figure 2. Representative pathology records and imaging findings.",
        },
    ]

    assert is_embedded_figure_text_block(blocks[2], blocks, page_width=1200, page_height=1600) is True