"""Tests für Impressum-Agent v3 (Sprint 1.12).

Mockt rag_document_checker damit Tests offline laufen + prüft die
Layer-0-Boost-Logik isoliert.
"""

from __future__ import annotations

import asyncio

import pytest

from compliance.services.specialist_agents import (
    AgentInput,
    ImpressumAgent,
    Severity,
)
from compliance.services.specialist_agents.impressum.agent import (
    _build_measure,
)
from compliance.services.specialist_agents.impressum.mcs import MCS
from compliance.services.specialist_agents.impressum.regex_boost import (
    BOOST_KEYWORDS,
    boost_matches_db_mc,
    compute_regex_boosts,
    criteria_on_topic,
)
from compliance.services.specialist_agents.impressum.v3_engine import (
    _filter_controls,
)


TESLA_TEXT = (
    "Tesla Germany GmbH\nLudwig-Prandtl-Strasse 25-29\n12526 Berlin\n"
    "E-Mail: info@tesla.com\n"
    "Telefon: +49 89 1250 16 800\n"
    "Management: Elon Musk\n"
    "Handelsregister: HRB 218904 B Charlottenburg\n"
    "USt-IdNr: DE123456789\n"
)


def _run(coro):
    return asyncio.get_event_loop().run_until_complete(coro)


def test_compute_regex_boosts_detects_basic_fields():
    hits = compute_regex_boosts(TESLA_TEXT, business_scope=set())
    # Tesla hat klassische Pflichtangaben
    assert "kontakt_email" in hits
    assert "kontakt_telefon" in hits
    assert "handelsregister" in hits
    assert "ust_id" in hits
    assert "vertretungsberechtigte" in hits  # "Management"
    # KFZ-Auto-Detect → aufsichtsbehoerde wäre relevant aber kein
    # Pattern getroffen (KBA nicht genannt)


def test_compute_regex_boosts_short_text_empty():
    assert compute_regex_boosts("x", business_scope=set()) == set()


def test_boost_matches_db_mc_finds_telefon():
    boosts = {"kontakt_telefon"}
    pass_crit = [
        "Telefonnummer angeben",
        "Erreichbar per Telefon und E-Mail",
    ]
    matched = boost_matches_db_mc(boosts, pass_crit)
    assert matched == "kontakt_telefon"


def test_boost_matches_db_mc_returns_none_when_unrelated():
    boosts = {"kontakt_telefon"}
    pass_crit = [
        "Cookie-Banner muss zentriert sein",
    ]
    assert boost_matches_db_mc(boosts, pass_crit) is None


def test_boost_matches_db_mc_uses_fail_criteria():
    """Wörter aus fail_criteria sollen die Zuordnung mit unterstützen."""
    boosts = {"name_anbieter"}
    pass_crit = ["Sichtbar"]
    fail_crit = ["Keine Postadresse angegeben", "Adresse fehlt"]
    matched = boost_matches_db_mc(boosts, pass_crit, fail_crit)
    assert matched == "name_anbieter"


def test_boost_matches_db_mc_eto_address_case():
    """Konkreter ETO-Fall: AUTH-1954-A07 'Postadresse + Geschäftssitz'."""
    boosts = {"name_anbieter"}
    pass_crit = [
        "Vollständige Postadresse (Straße, Hausnummer, PLZ, Ort, Land)",
        "Oder: Eindeutige Angabe des Geschäftssitzes",
        "Adresse ist aktuell und korrekt",
    ]
    matched = boost_matches_db_mc(boosts, pass_crit)
    assert matched == "name_anbieter"


def test_boost_keywords_cover_all_field_ids():
    """Jedes mcs.py field_id muss in BOOST_KEYWORDS ein Eintrag haben."""
    from compliance.services.specialist_agents.impressum.mcs import MCS
    for mc in MCS:
        assert mc.field_id in BOOST_KEYWORDS, (
            f"BOOST_KEYWORDS missing for {mc.field_id}"
        )


@pytest.fixture
def no_llm(monkeypatch):
    """Deaktiviert den LLM-Semantic-Validator — der Agent prueft die 12
    mcs.py-Pattern-MCs deterministisch direkt am Text."""
    async def _no_validator(*a, **kw):
        return {}
    monkeypatch.setattr(
        "compliance.services.specialist_agents.impressum.agent.validate_present",
        _no_validator,
    )


def test_agent_emits_pflichtangabe_findings(no_llm):
    agent = ImpressumAgent()
    out = _run(agent.evaluate(AgentInput(doc_type="impressum",
                                            text=TESLA_TEXT)))
    fids = {f.field_id for f in out.findings}
    # Tesla nennt 'Management' (englisch) → deutsches GF-Label fehlt
    assert "vertretungsberechtigte_label_korrekt" in fids
    f = next(f for f in out.findings
             if f.field_id == "vertretungsberechtigte_label_korrekt")
    assert f.severity == Severity.MEDIUM.value
    assert f.check_id == "IMP-vertretungsberechtigte_label_korrekt"
    assert f.severity_reason == "pflichtangabe_missing"
    # Vorhandene Pflichtangaben erzeugen KEIN Finding
    assert "kontakt_email" not in fids
    assert "handelsregister" not in fids


def test_agent_coverage_has_all_12(no_llm):
    agent = ImpressumAgent()
    out = _run(agent.evaluate(AgentInput(doc_type="impressum",
                                            text=TESLA_TEXT)))
    assert out.mc_total == len(MCS)  # je MC genau 1 Coverage-Eintrag
    ok = [c for c in out.mc_coverage if c.status == "ok"]
    # name, email, telefon, HR, USt, vertretungsberechtigte = 6 vorhanden
    assert len(ok) == 6


def test_agent_notes(no_llm):
    agent = ImpressumAgent()
    out = _run(agent.evaluate(AgentInput(doc_type="impressum",
                                            text=TESLA_TEXT)))
    assert "§5-TMG-MCs geprüft" in out.notes


def test_short_text_skipped():
    agent = ImpressumAgent()
    out = _run(agent.evaluate(AgentInput(doc_type="impressum", text="x")))
    assert all(c.status == "skipped" for c in out.mc_coverage)
    assert not out.findings


def test_agent_version_is_three():
    agent = ImpressumAgent()
    assert agent.agent_version == "3.0"


# ── Themen-Gate: criteria_on_topic ──────────────────────────────────


def test_criteria_on_topic_keeps_genuine_telefon():
    assert criteria_on_topic([
        "Telefonnummer angeben",
        "Erreichbar per Telefon",
    ]) is True


def test_criteria_on_topic_keeps_genuine_address():
    assert criteria_on_topic([
        "Vollständige Postadresse (Straße, Hausnummer, PLZ, Ort)",
    ]) is True


def test_criteria_on_topic_drops_bestellbestaetigung():
    # Fremd-MC: kein Impressum-Themenüberlapp → raus.
    assert criteria_on_topic([
        "Bestellbestätigung wird nach Vertragsschluss versendet",
        "Bestelleingang wird dokumentiert",
    ]) is False


def test_criteria_on_topic_single_incidental_hit_dropped():
    # 'E-Mail' allein (1 Treffer) reicht nicht — braucht >=2.
    assert criteria_on_topic([
        "Bestellbestätigung wird per E-Mail versendet",
    ]) is False


def test_criteria_on_topic_drops_behoerdliche_anzeige():
    assert criteria_on_topic([
        "Behördliche Anzeige der Tätigkeit erfolgt",
        "Gewerbeanmeldung liegt vor",
    ]) is False


def test_criteria_on_topic_empty_kept():
    # Keine Kriterien = kein Signal → konservativ behalten.
    assert criteria_on_topic([]) is True


# ── Scope-Filter: _filter_controls ──────────────────────────────────


def _mc(control_id, pass_criteria):
    return {"control_id": control_id, "pass_criteria": pass_criteria,
            "fail_criteria": []}


def test_filter_controls_drops_gov_when_out_of_scope():
    controls = [_mc("GOV-814-A03", ["Behörde meldet an Aufsichtsstelle"])]
    kept, stats = _filter_controls(controls, business_scope=set())
    assert kept == []
    assert stats["sector_dropped"] == 1


def test_filter_controls_keeps_gov_when_in_scope():
    controls = [_mc("GOV-814-A03",
                    ["Aufsichtsbehörde und Behörde benannt"])]
    kept, stats = _filter_controls(controls,
                                   business_scope={"government"})
    assert len(kept) == 1
    assert stats["sector_dropped"] == 0


def test_filter_controls_keeps_genuine_impressum_mc():
    controls = [_mc("AUTH-1954-A07",
                    ["Vollständige Postadresse mit Straße und PLZ"])]
    kept, stats = _filter_controls(controls, business_scope=set())
    assert len(kept) == 1
    assert stats["sector_dropped"] == 0
    assert stats["offtopic_dropped"] == 0


def test_filter_controls_drops_offtopic_non_sector_mc():
    controls = [_mc("ECOM-1-A1",
                    ["Bestellbestätigung nach Vertragsschluss versenden"])]
    kept, stats = _filter_controls(controls, business_scope=set())
    assert kept == []
    assert stats["offtopic_dropped"] == 1


# ── Maßnahme statt Frage: _build_measure ────────────────────────────


def test_build_measure_is_imperative_not_question():
    m = _build_measure("USt-IdNr", "§ 5 Abs. 1 Nr. 6 TMG")
    assert "?" not in m
    assert "ergänzen" in m.lower()
    assert "Rechtsgrundlage" in m


def test_build_measure_handles_empty_label():
    m = _build_measure("", "")
    assert "?" not in m
    assert m.strip() != ""


# ── Delegation an Main-Tool-Engine + Filter (Integration) ───────────


def test_run_v3_pipeline_delegates_and_filters(monkeypatch):
    """run_v3_pipeline lädt über die Main-Tool-Engine (_load_controls
    gemockt), normalisiert JSONB-Strings und das Sektor-/Themen-Gate
    entfernt GOV (out-of-scope) + fremde MCs. Genuine MC bleibt."""
    from compliance.services.specialist_agents.impressum import v3_engine

    async def _fake_load(doc_type, db_url, limit, business_scope=None):
        # pass_criteria absichtlich als JSON-STRING (wie asyncpg JSONB)
        return [
            {"control_id": "AUTH-1954-A07", "title": "USt-IdNr",
             "regulation": "TMG", "article": "§ 5", "severity": "HIGH",
             "check_question": "Ist die USt-IdNr angegeben?",
             "pass_criteria": '["USt-IdNr"]',
             "fail_criteria": "[]"},
            {"control_id": "GOV-814-A03", "title": "Behördliche Anzeige",
             "regulation": "X", "article": "", "severity": "HIGH",
             "check_question": "Behörde informiert?",
             "pass_criteria": '["Aufsichtsbehörde und Behörde benannt"]',
             "fail_criteria": "[]"},
            {"control_id": "ECOM-1-A1", "title": "Bestellbestätigung",
             "regulation": "X", "article": "", "severity": "HIGH",
             "check_question": "Bestellbestätigung versandt?",
             "pass_criteria":
                 '["Bestellbestätigung nach Vertragsschluss versenden"]',
             "fail_criteria": "[]"},
        ]
    monkeypatch.setattr(
        "compliance.services.rag_document_checker._load_controls",
        _fake_load,
    )
    # AUTH-MC matched per Keyword → kein Layer-2-Embedding nötig; kein
    # mc_embedding_matcher-Mock erforderlich.

    text = ("Beispiel GmbH\nMusterstr. 1\n12345 Berlin\n"
            "USt-IdNr: DE123456789\n") * 5  # >100 Zeichen
    results, telem = _run(
        v3_engine.run_v3_pipeline(text, business_scope=set()),
    )
    cids = {r["control_id"] for r in results}
    assert "GOV-814-A03" not in cids       # Sektor out-of-scope
    assert "ECOM-1-A1" not in cids         # themenfremd
    assert "AUTH-1954-A07" in cids         # genuine MC bleibt
    assert telem["sector_dropped"] == 1
    assert telem["offtopic_dropped"] == 1