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"""Maximum AI: full past-report-quality sections."""

from __future__ import annotations

from docx import Document

from backend.config import settings
from backend.core import ingest, section_mapper
from backend.core.maximum_compose import compose_maximum_ai
from backend.core.medium_expand import expand_medium_ai
from backend.core.rag_store import TIER_REFERENCE, get_rag_store


def _write_rich_past_roof_report(path):
    doc = Document()
    doc.add_paragraph("Section E2 - Roof Coverings")
    doc.add_paragraph(
        "The roof coverings were inspected from ground level using binoculars and, "
        "where accessible, from within the roof void. The main roof covering "
        "comprises natural slate tiles laid to pitched timber rafters with underfelt "
        "and counter battens. Some slate tiles to the south elevation appeared "
        "displaced from their fixings. No signs of widespread moisture ingress were "
        "noted at the time of inspection."
    )
    doc.save(str(path))


def test_maximum_keeps_full_rich_paragraph():
    refs = [
        (
            "The roof coverings were inspected from ground level using binoculars and, "
            "where accessible, from within the roof void. The main roof covering "
            "comprises natural slate tiles laid to pitched timber rafters with underfelt "
            "and counter battens."
        ),
    ]
    out = compose_maximum_ai(["slate tile slipped south slope"], refs, section_title="Roof Coverings")
    assert "•" not in out
    assert out.count(".") >= 2
    assert "slate" in out.lower()
    assert "south slope" in out.lower() or "south" in out.lower()
    assert "binoculars" in out.lower()
    assert len(out.split()) >= len(refs[0].split()) * 0.85


def test_maximum_at_least_as_long_as_medium():
    refs = [
        (
            "The roof coverings were inspected from ground level using binoculars. "
            "The main roof covering comprises natural slate tiles laid to pitched "
            "timber rafters with underfelt and counter battens."
        ),
    ]
    obs = ["slate tile slipped south slope"]
    medium = expand_medium_ai(obs, refs[0])
    maximum = compose_maximum_ai(obs, refs, section_title="Roof Coverings")
    assert len(maximum.split()) >= len(medium.split()) * 0.85
    assert maximum.count(".") >= medium.count(".")


def test_maximum_mode_full_paragraph_in_report(tmp_path, monkeypatch):
    monkeypatch.setattr(settings, "data_dir", str(tmp_path / "data"))

    tpl = tmp_path / "template.docx"
    doc = Document()
    doc.add_paragraph("D2 Roof coverings")
    doc.save(str(tpl))

    master = tmp_path / "master.docx"
    doc2 = Document()
    doc2.add_paragraph("Section E2 - Roof Coverings")
    doc2.add_paragraph("The roof covering comprises slate laid to pitched timber rafters.")
    doc2.save(str(master))

    past = tmp_path / "past.docx"
    _write_rich_past_roof_report(past)

    tenant = "t-max-ref"
    ingest.ingest_report_template(tenant, tpl)
    ingest.ingest_standard_paragraphs(tenant, master)
    ingest.ingest_reference(tenant, past)
    assert get_rag_store().count(tenant, TIER_REFERENCE) >= 1

    result = section_mapper.generate_report(
        tenant,
        "slate tile slipped south slope",
        interference_level="maximum",
    )
    d3 = next(s for s in result.sections if s.section_id == "D2")
    assert d3.status == "OK"
    assert "•" not in d3.text
    assert d3.text.count(".") >= 3
    assert "south slope" in d3.text.lower() or "slate" in d3.text.lower()
    assert "binoculars" in d3.text.lower() or "rafters" in d3.text.lower()