import zipfile
from pathlib import Path

import pytest
from docx import Document

from review_agent.application_form_fill.schemas import MergedField, TemplateSpec
from review_agent.application_form_fill.services.word_fill import create_word_export, fill_template
from review_agent.models import (
    ApplicationFormFillArtifact,
    ApplicationFormFillBatch,
    Conversation,
    ExportedSummaryFile,
    FileSummaryBatch,
)


pytestmark = pytest.mark.django_db


def _spec():
    return TemplateSpec(
        code="registration_certificate",
        name="注册证格式",
        source_file="template.docx",
        output_label="注册证格式",
        applies_when={"registration_type": ["首次注册"]},
        file_format="docx",
        fields=[
            {"key": "product_name", "label": "产品名称", "target": {"type": "table_row", "row_label": "产品名称"}},
            {"key": "intended_use", "label": "预期用途", "target": {"type": "table_row", "row_label": "预期用途"}},
        ],
    )


def _template(path):
    document = Document()
    table = document.add_table(rows=2, cols=2)
    table.rows[0].cells[0].text = "产品名称"
    table.rows[1].cells[0].text = "预期用途"
    document.save(path)


def test_word_fill_writes_table_rows(tmp_path):
    template_path = tmp_path / "template.docx"
    output_path = tmp_path / "filled.docx"
    _template(template_path)

    fill_template(
        template_path,
        output_path,
        _spec(),
        {
            "product_name": MergedField("product_name", "产品名称", "甲胎蛋白检测试剂盒", "说明书.txt", "证据", 0.8),
            "intended_use": MergedField("intended_use", "预期用途", "用于体外检测", "说明书.txt", "证据", 0.8),
        },
    )

    document = Document(output_path)
    assert document.tables[0].rows[0].cells[1].text == "甲胎蛋白检测试剂盒"
    assert document.tables[0].rows[1].cells[1].text == "用于体外检测"


def test_word_fill_highlights_conflict_in_docx_xml(tmp_path):
    template_path = tmp_path / "template.docx"
    output_path = tmp_path / "filled.docx"
    _template(template_path)

    fill_template(
        template_path,
        output_path,
        _spec(),
        {
            "product_name": MergedField(
                "product_name",
                "产品名称",
                "甲胎蛋白检测试剂盒",
                "说明书.txt",
                "证据",
                0.8,
                has_conflict=True,
            )
        },
        conflicts=[{"field_key": "product_name"}],
    )

    with zipfile.ZipFile(output_path) as package:
        document_xml = package.read("word/document.xml").decode("utf-8")
    assert 'w:fill="FFFF00"' in document_xml
    assert 'w:color w:val="FF0000"' in document_xml


def test_create_word_export_records_artifact_and_export(settings, tmp_path, django_user_model):
    settings.MEDIA_ROOT = tmp_path
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    summary = FileSummaryBatch.objects.create(conversation=conversation, user=user, batch_no="FS-WORD")
    batch = ApplicationFormFillBatch.objects.create(
        conversation=conversation,
        user=user,
        source_summary_batch=summary,
        batch_no="AFF-WORD",
        product_name="甲胎蛋白检测试剂盒",
        work_dir=str(tmp_path / "aff" / "AFF-WORD"),
    )
    template_path = tmp_path / "template.docx"
    _template(template_path)

    exported = create_word_export(
        batch,
        _spec(),
        template_path,
        {"product_name": MergedField("product_name", "产品名称", "甲胎蛋白检测试剂盒", "说明书.txt", "证据", 0.8)},
    )

    assert exported.export_type == ExportedSummaryFile.ExportType.WORD
    assert exported.workflow_type == "application_form_fill"
    assert exported.workflow_batch_id == batch.pk
    assert ApplicationFormFillArtifact.objects.filter(
        batch=batch,
        artifact_type=ApplicationFormFillArtifact.ArtifactType.FILLED_TEMPLATE,
    ).exists()


def test_create_word_export_sanitizes_product_name_newlines(settings, tmp_path, django_user_model):
    settings.MEDIA_ROOT = tmp_path
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    summary = FileSummaryBatch.objects.create(conversation=conversation, user=user, batch_no="FS-WORD-NL")
    batch = ApplicationFormFillBatch.objects.create(
        conversation=conversation,
        user=user,
        source_summary_batch=summary,
        batch_no="AFF-WORD-NL",
        product_name="原体核酸检测试剂盒（荧\n光PCR法）",
        work_dir=str(tmp_path / "aff" / "AFF-WORD-NL"),
    )
    template_path = tmp_path / "template.docx"
    _template(template_path)

    exported = create_word_export(
        batch,
        _spec(),
        template_path,
        {"product_name": MergedField("product_name", "产品名称", "原体核酸检测试剂盒", "说明书.txt", "证据", 0.8)},
    )

    assert "\n" not in exported.file_name
    assert "\r" not in exported.file_name
    assert Path(exported.storage_path).exists()