from __future__ import annotations

import httpx

from app.services.knowledge.demo import DemoKnowledgeProvider
from app.services.knowledge.ragcore import RAGcoreKnowledgeProvider


def test_s6_damage_question_is_grounded_with_expected_sources():
    provider = DemoKnowledgeProvider()
    answer = provider.ask(
        "What must I do when a vehicle returns with damage?", "test-correlation-1"
    )
    assert answer.evidence_state == "grounded"
    document_ids = {s.document_id for s in answer.sources}
    assert "damage-procedure" in document_ids
    assert "vehicle-return-procedure" in document_ids
    assert answer.answer  # never empty for a grounded answer
    for source in answer.sources:
        assert source.excerpt


def test_unrelated_question_is_insufficient():
    provider = DemoKnowledgeProvider()
    answer = provider.ask("What is the capital of France?", "test-correlation-2")
    assert answer.evidence_state == "insufficient"
    assert "France" not in answer.answer  # never fabricates an answer beyond the procedures


def test_demo_provider_health_reports_document_count():
    provider = DemoKnowledgeProvider()
    health = provider.health()
    assert health.provider == "demo"
    assert health.available is True
    assert health.document_count == 10


def test_ask_question_endpoint_grounded(ops_client):
    response = ops_client.post(
        "/api/v1/knowledge/questions",
        json={"question": "What must I do when a vehicle returns with damage?"},
    )
    assert response.status_code == 200
    body = response.json()
    assert body["evidence_state"] == "grounded"
    assert body["provider"] == "demo"
    assert len(body["sources"]) > 0


def test_ask_question_requires_authentication(client):
    response = client.post("/api/v1/knowledge/questions", json={"question": "Anything?"})
    assert response.status_code == 401


def test_ask_question_is_audited_without_leaking_full_text(ops_client):
    ops_client.post(
        "/api/v1/knowledge/questions",
        json={"question": "What must I do when a vehicle returns with damage?"},
    )
    events = ops_client.get(
        "/api/v1/audit", params={"action": "knowledge_question_asked"}
    ).json()
    assert len(events) >= 1
    metadata = events[0]["metadata"]
    assert "evidence_state" in metadata
    assert "source_ids" in metadata
    assert "question" not in metadata


def test_knowledge_status_endpoint(ops_client):
    response = ops_client.get("/api/v1/knowledge/status")
    assert response.status_code == 200
    assert response.json()["provider"] == "demo"


def test_ragcore_provider_degrades_to_unavailable(monkeypatch):
    def fake_client(*args, **kwargs):
        raise httpx.ConnectError("no ragcore in this environment")

    provider = RAGcoreKnowledgeProvider()
    monkeypatch.setattr(provider, "_client", fake_client)
    answer = provider.ask("Anything?", "test-correlation-3")
    assert answer.evidence_state == "unavailable"
    assert answer.sources == []