"""Tests for the consequence engine and choice→consequence→learning loop."""

from fusionagi.governance import Alternative, ConsequenceEngine
from fusionagi.governance.audit_log import AuditLog
from fusionagi.schemas.audit import AuditEventType


class TestConsequenceEngine:
    """Test consequence tracking and risk/reward estimation."""

    def test_record_choice(self) -> None:
        ce = ConsequenceEngine()
        choice = ce.record_choice(
            choice_id="c1",
            actor="planner",
            action_taken="use_tool_x",
            estimated_risk=0.3,
            estimated_reward=0.7,
            rationale="Tool X is the best fit",
        )
        assert choice.choice_id == "c1"
        assert choice.estimated_risk == 0.3
        assert ce.total_choices == 1

    def test_record_consequence(self) -> None:
        ce = ConsequenceEngine()
        ce.record_choice(choice_id="c1", actor="planner", action_taken="act")
        consequence = ce.record_consequence(
            choice_id="c1",
            outcome_positive=True,
            actual_risk_realized=0.1,
            actual_reward_gained=0.9,
            description="Action succeeded",
        )
        assert consequence is not None
        assert consequence.outcome_positive is True
        assert ce.total_consequences == 1

    def test_consequence_not_found(self) -> None:
        ce = ConsequenceEngine()
        result = ce.record_consequence(choice_id="nonexistent", outcome_positive=True)
        assert result is None

    def test_surprise_factor(self) -> None:
        ce = ConsequenceEngine()
        ce.record_choice(
            choice_id="c1",
            actor="exec",
            action_taken="risky_op",
            estimated_risk=0.1,
            estimated_reward=0.9,
        )
        consequence = ce.record_consequence(
            choice_id="c1",
            outcome_positive=False,
            actual_risk_realized=0.9,
            actual_reward_gained=0.1,
        )
        assert consequence is not None
        assert consequence.surprise_factor > 0.5

    def test_estimate_risk_reward_no_history(self) -> None:
        ce = ConsequenceEngine()
        estimate = ce.estimate_risk_reward("unknown_action")
        assert estimate["observations"] == 0
        assert estimate["confidence"] == 0.1

    def test_estimate_risk_reward_with_history(self) -> None:
        ce = ConsequenceEngine()
        for i in range(5):
            ce.record_choice(f"c{i}", "exec", "tool_call")
            ce.record_consequence(
                f"c{i}",
                outcome_positive=True,
                actual_risk_realized=0.2,
                actual_reward_gained=0.8,
            )
        estimate = ce.estimate_risk_reward("tool_call")
        assert estimate["observations"] == 5
        assert abs(estimate["expected_risk"] - 0.2) < 0.01
        assert abs(estimate["expected_reward"] - 0.8) < 0.01

    def test_alternatives_recorded(self) -> None:
        ce = ConsequenceEngine()
        alts = [
            Alternative(action="alt_a", estimated_risk=0.6, reason_not_chosen="Too risky"),
            Alternative(action="alt_b", estimated_risk=0.2, reason_not_chosen="Lower reward"),
        ]
        choice = ce.record_choice(
            choice_id="c1",
            actor="planner",
            action_taken="chosen_action",
            alternatives=alts,
        )
        assert len(choice.alternatives) == 2
        assert choice.alternatives[0].reason_not_chosen == "Too risky"

    def test_get_summary(self) -> None:
        ce = ConsequenceEngine()
        ce.record_choice("c1", "exec", "action_a")
        ce.record_consequence("c1", True, 0.1, 0.9)
        ce.record_choice("c2", "exec", "action_a")
        ce.record_consequence("c2", False, 0.8, 0.1)
        summary = ce.get_summary()
        assert summary["total_choices"] == 2
        assert summary["total_consequences"] == 2
        assert summary["positive_outcomes"] == 1
        assert summary["negative_outcomes"] == 1

    def test_audit_log_integration(self) -> None:
        audit = AuditLog()
        ce = ConsequenceEngine(audit_log=audit)
        ce.record_choice("c1", "exec", "action")
        ce.record_consequence("c1", True)
        choices = audit.get_by_type(AuditEventType.CHOICE)
        consequences = audit.get_by_type(AuditEventType.CONSEQUENCE)
        assert len(choices) == 1
        assert len(consequences) == 1