"""Service integration tests: verify service chains produce correct outputs."""

from __future__ import annotations

import pytest

from app.services.mock_data import (
    MOCK_PATIENT_PROFILE,
    MOCK_TRIAL_CANDIDATES,
)
from trialpath.models import (
    EligibilityLedger,
    PatientProfile,
    SearchAnchors,
)


class TestMedGemmaToProfileRoundtrip:
    """MedGemma extraction → PatientProfile validation chain."""

    @pytest.mark.asyncio
    async def test_extracted_profile_is_valid_model(self, mock_medgemma):
        """Verify MedGemma output parses into a valid PatientProfile."""
        from trialpath.services.medgemma_extractor import MedGemmaExtractor

        extractor = MedGemmaExtractor()
        profile = await extractor.extract(["dummy.pdf"], {})
        assert isinstance(profile, PatientProfile)
        assert profile.patient_id is not None

    @pytest.mark.asyncio
    async def test_extracted_profile_has_prescreen_data(self, mock_medgemma):
        """Verify extracted profile has enough data for prescreening."""
        from trialpath.services.medgemma_extractor import MedGemmaExtractor

        extractor = MedGemmaExtractor()
        profile = await extractor.extract(["dummy.pdf"], {})
        assert profile.has_minimum_prescreen_data()

    @pytest.mark.asyncio
    async def test_profile_serialization_roundtrip(self, mock_medgemma):
        """Verify profile survives JSON serialization."""
        from trialpath.services.medgemma_extractor import MedGemmaExtractor

        extractor = MedGemmaExtractor()
        profile = await extractor.extract(["dummy.pdf"], {})
        json_str = profile.model_dump_json()
        restored = PatientProfile.model_validate_json(json_str)
        assert restored.patient_id == profile.patient_id
        assert restored.demographics.age == profile.demographics.age


class TestGeminiSearchAnchorChain:
    """Profile → SearchAnchors → search param generation."""

    @pytest.mark.asyncio
    async def test_anchors_from_profile(self, mock_gemini, sample_profile):
        """Verify Gemini produces SearchAnchors from a profile."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        anchors = await planner.generate_search_anchors(sample_profile)
        assert isinstance(anchors, SearchAnchors)
        assert anchors.condition is not None

    @pytest.mark.asyncio
    async def test_refine_narrows_results(self, mock_gemini, sample_anchors):
        """Verify refine_search produces tighter anchors."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        refined = await planner.refine_search(sample_anchors, result_count=100, search_log=[])
        assert isinstance(refined, SearchAnchors)

    @pytest.mark.asyncio
    async def test_relax_broadens_results(self, mock_gemini, sample_anchors):
        """Verify relax_search produces broader anchors."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        relaxed = await planner.relax_search(sample_anchors, result_count=0, search_log=[])
        assert isinstance(relaxed, SearchAnchors)


class TestDualModelEligibility:
    """Dual-model eligibility evaluation: MedGemma (medical) + Gemini (structural)."""

    @pytest.mark.asyncio
    async def test_slice_criteria_returns_typed_list(self, mock_gemini):
        """Verify criteria slicing produces typed criterion list."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        trial = MOCK_TRIAL_CANDIDATES[0]
        criteria = await planner.slice_criteria(trial.model_dump())
        assert isinstance(criteria, list)
        assert len(criteria) >= 1
        for c in criteria:
            assert "type" in c
            assert c["type"] in ("medical", "structural")

    @pytest.mark.asyncio
    async def test_medical_criterion_via_medgemma(self, mock_medgemma):
        """Verify MedGemma evaluates a medical criterion."""
        from trialpath.services.medgemma_extractor import MedGemmaExtractor

        extractor = MedGemmaExtractor()
        result = await extractor.evaluate_medical_criterion(
            criterion_text="EGFR mutation positive",
            patient_profile=MOCK_PATIENT_PROFILE,
            evidence_docs=[],
        )
        assert result["decision"] in ("met", "not_met", "unknown")
        assert "confidence" in result

    @pytest.mark.asyncio
    async def test_structural_criterion_via_gemini(self, mock_gemini):
        """Verify Gemini evaluates a structural criterion."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        result = await planner.evaluate_structural_criterion(
            criterion_text="Age >= 18",
            patient_profile=MOCK_PATIENT_PROFILE,
        )
        assert result["decision"] in ("met", "not_met", "unknown")

    @pytest.mark.asyncio
    async def test_aggregate_produces_ledger(self, mock_gemini):
        """Verify aggregation produces a valid EligibilityLedger."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        ledger = await planner.aggregate_assessments(
            profile=MOCK_PATIENT_PROFILE,
            trial=MOCK_TRIAL_CANDIDATES[0].model_dump(),
            assessments=[
                {"criterion": "Age >= 18", "decision": "met", "confidence": 0.95},
                {"criterion": "EGFR+", "decision": "met", "confidence": 0.9},
            ],
        )
        assert isinstance(ledger, EligibilityLedger)
        assert ledger.nct_id is not None


class TestGapAnalysisAggregation:
    """Gap analysis across multiple ledgers."""

    @pytest.mark.asyncio
    async def test_gaps_identified_from_ledgers(self, mock_gemini, sample_profile, sample_ledgers):
        """Verify gap analysis produces actionable items."""
        from trialpath.services.gemini_planner import GeminiPlanner

        planner = GeminiPlanner()
        gaps = await planner.analyze_gaps(sample_profile, sample_ledgers)
        assert isinstance(gaps, list)
        for gap in gaps:
            assert "description" in gap
            assert "recommended_action" in gap

    def test_gap_deduplication_across_ledgers(self, sample_ledgers):
        """Verify gaps are deduplicated across multiple ledgers."""
        all_gaps = []
        seen = set()
        for ledger in sample_ledgers:
            for gap in ledger.gaps:
                if gap.description not in seen:
                    seen.add(gap.description)
                    all_gaps.append(gap)
        # Unique gaps should be <= total gaps across all ledgers
        total = sum(len(lg.gaps) for lg in sample_ledgers)
        assert len(all_gaps) <= total


class TestFullPipelineChain:
    """End-to-end data flow through service chain with mocked services."""

    @pytest.mark.asyncio
    async def test_profile_to_anchors_to_search_to_evaluate(
        self, mock_medgemma, mock_gemini, sample_profile
    ):
        """Verify full chain: extract → anchors → search → evaluate."""
        from trialpath.services.gemini_planner import GeminiPlanner
        from trialpath.services.medgemma_extractor import MedGemmaExtractor

        # Step 1: Extract profile
        extractor = MedGemmaExtractor()
        profile = await extractor.extract(["dummy.pdf"], {})
        assert isinstance(profile, PatientProfile)

        # Step 2: Generate search anchors
        planner = GeminiPlanner()
        anchors = await planner.generate_search_anchors(profile)
        assert isinstance(anchors, SearchAnchors)

        # Step 3: Evaluate eligibility (mocked)
        trial = MOCK_TRIAL_CANDIDATES[0]
        ledger = await planner.aggregate_assessments(
            profile=profile,
            trial=trial.model_dump(),
            assessments=[{"criterion": "Age >= 18", "decision": "met", "confidence": 0.95}],
        )
        assert isinstance(ledger, EligibilityLedger)

    def test_full_data_contracts_compatible(self, sample_profile, sample_trials, sample_ledgers):
        """Verify all data contracts work together end-to-end."""
        assert sample_profile.diagnosis is not None
        # Profile → SearchAnchors
        anchors = SearchAnchors(
            condition=sample_profile.diagnosis.primary_condition,
            biomarkers=[b.name for b in sample_profile.biomarkers],
            stage=sample_profile.diagnosis.stage,
        )
        assert anchors.condition is not None

        # Trials + Ledgers
        ledger_map = {lg.nct_id: lg for lg in sample_ledgers}
        for trial in sample_trials:
            assert trial.nct_id in ledger_map
            ledger = ledger_map[trial.nct_id]
            assert ledger.traffic_light in ("green", "yellow", "red")

        # Gaps
        all_gaps = []
        for lg in sample_ledgers:
            all_gaps.extend(lg.gaps)
        # At least one gap in mock data
        assert len(all_gaps) >= 1