import importlib
from types import SimpleNamespace
from typing import cast

import pytest
from rdflib import URIRef

from ontocast.onto.content_unit import ContentUnit
from ontocast.onto.enum import FailureStage, Status
from ontocast.onto.model import (
    FactsCritiqueReport,
    FactsRenderReport,
    SemanticTriplesFactsReport,
    TripleFix,
)
from ontocast.onto.ontology import Ontology
from ontocast.onto.rdfgraph import RDFGraph
from ontocast.onto.unit_states import UnitFactsState
from ontocast.tool.atomic import AtomicToolBox

criticise_facts_module = importlib.import_module("ontocast.agent.criticise_facts")
render_facts_module = importlib.import_module("ontocast.agent.render_facts")


def _build_content_unit(with_graph: bool = False) -> ContentUnit:
    unit = ContentUnit(
        text="Alice works for ACME.",
        index=0,
        doc_iri=URIRef("https://example.com/doc/d1"),
    )
    if with_graph:
        unit.graph.parse(
            data="""
            @prefix ex: <https://example.com/ns#> .
            ex:alice ex:worksFor ex:acme .
            """,
            format="turtle",
        )
    return unit


def _build_ontology() -> Ontology:
    ontology_graph = RDFGraph()
    ontology_graph.parse(
        data="""
        @prefix onto: <https://example.com/onto#> .
        @prefix owl: <http://www.w3.org/2002/07/owl#> .
        onto:CompanyOntology a owl:Ontology .
        """,
        format="turtle",
    )
    return Ontology(graph=ontology_graph, iri="https://example.com/onto")


def _build_tools() -> AtomicToolBox:
    async def get_llm_tool(_budget_tracker):
        return object()

    return cast(AtomicToolBox, SimpleNamespace(get_llm_tool=get_llm_tool))


@pytest.mark.anyio
async def test_render_facts_routes_to_fresh_when_graph_is_empty(monkeypatch) -> None:
    calls = {"fresh": 0, "update": 0}

    async def fake_fresh(state: UnitFactsState, tools) -> UnitFactsState:
        calls["fresh"] += 1
        return state

    async def fake_update(state: UnitFactsState, tools) -> UnitFactsState:
        calls["update"] += 1
        return state

    monkeypatch.setattr(render_facts_module, "render_facts_fresh", fake_fresh)
    monkeypatch.setattr(render_facts_module, "render_facts_update", fake_update)

    state = UnitFactsState(
        content_unit=_build_content_unit(with_graph=False),
        ontology_snapshot=_build_ontology(),
    )
    result = await render_facts_module.render_facts(state, tools=_build_tools())

    assert result is state
    assert calls["fresh"] == 1
    assert calls["update"] == 0


@pytest.mark.anyio
async def test_render_facts_fresh_sets_success_and_budget(monkeypatch) -> None:
    async def fake_call_llm_with_retry(**kwargs):
        rendered_graph = RDFGraph()
        rendered_graph.parse(
            data="""
            @prefix ex: <https://example.com/ns#> .
            ex:alice ex:worksFor ex:acme .
            """,
            format="turtle",
        )
        return FactsRenderReport(
            facts_report=SemanticTriplesFactsReport(
                semantic_graph=rendered_graph,
                ontology_relevance_score=95,
                triples_generation_score=94,
            )
        )

    monkeypatch.setattr(
        render_facts_module, "call_llm_with_retry", fake_call_llm_with_retry
    )

    state = UnitFactsState(
        content_unit=_build_content_unit(with_graph=False),
        ontology_snapshot=_build_ontology(),
    )
    result = await render_facts_module.render_facts_fresh(state, tools=_build_tools())

    assert result.status == Status.SUCCESS
    assert result.failure_stage is None
    assert len(result.content_unit.graph) == 1
    assert result.budget_tracker.facts_operations_count == 1
    assert result.budget_tracker.facts_triples_generated == 1


@pytest.mark.anyio
async def test_criticise_facts_marks_failed_and_sets_suggestions(monkeypatch) -> None:
    async def fake_call_llm_with_retry(**kwargs):
        return FactsCritiqueReport(
            success=False,
            score=35,
            actionable_triple_fixes=[
                TripleFix(
                    text_fragment="Alice works for ACME.",
                    action="ADD",
                    severity="important",
                    explanation="Missing employment relation triple.",
                    correct_value="ex:alice ex:worksFor ex:acme .",
                )
            ],
            systemic_critique_summary="Misses key relations.",
        )

    monkeypatch.setattr(
        criticise_facts_module, "call_llm_with_retry", fake_call_llm_with_retry
    )

    state = UnitFactsState(
        content_unit=_build_content_unit(with_graph=True),
        ontology_snapshot=_build_ontology(),
    )
    result = await criticise_facts_module.criticise_facts(state, tools=_build_tools())

    assert result.status == Status.FAILED
    assert result.failure_stage == FailureStage.FACTS_CRITIQUE
    assert len(result.suggestions.actionable_fixes) == 1
    assert result.failure_reason == "Facts Critic suggests improvements"


@pytest.mark.anyio
async def test_criticise_facts_accepts_high_score_even_when_success_false(
    monkeypatch,
) -> None:
    async def fake_call_llm_with_retry(**kwargs):
        return FactsCritiqueReport(
            success=False,
            score=95,
            actionable_triple_fixes=[],
            systemic_critique_summary="",
        )

    monkeypatch.setattr(
        criticise_facts_module, "call_llm_with_retry", fake_call_llm_with_retry
    )

    state = UnitFactsState(
        content_unit=_build_content_unit(with_graph=True),
        ontology_snapshot=_build_ontology(),
    )
    result = await criticise_facts_module.criticise_facts(state, tools=_build_tools())

    assert result.status == Status.SUCCESS
    assert result.failure_stage is None