"""Tests for format_llm_report (P5.3 T4)."""

from __future__ import annotations

from pf1e_simulator.report import build_report_context, format_llm_report
from pf1e_simulator.runner import CombatantAttrition, EncounterReport


def _make_encounter() -> EncounterReport:
    return EncounterReport(
        runs=100,
        seed=1,
        wins={"players": 65, "monsters": 33},
        draws=2,
        avg_rounds=7.2,
        attrition={
            "goblin": CombatantAttrition(2.45, 0.12, 18.30, 4.20, 0.00),
            "orc": CombatantAttrition(3.20, 0.25, 28.40, 15.60, 0.00),
        },
    )


def test_format_llm_report_empty_narrative() -> None:
    """Empty LLM text returns only the factual report."""
    ctx = build_report_context(encounter=_make_encounter(), spec_name="test")
    result = format_llm_report(ctx, "")

    assert "=== Rapport d'équilibrage ===" in result
    assert "Victoires players : 65.0%" in result
    assert "Récit d'équilibrage" not in result


def test_format_llm_report_whitespace_only_narrative() -> None:
    """Whitespace-only LLM text returns only the factual report."""
    ctx = build_report_context(encounter=_make_encounter(), spec_name="test")
    result = format_llm_report(ctx, "   \n  \t  ")

    assert "=== Rapport d'équilibrage ===" in result
    assert "Récit d'équilibrage" not in result


def test_format_llm_report_with_narrative() -> None:
    """Non-empty LLM text appends narrative section after factual report."""
    ctx = build_report_context(encounter=_make_encounter(), spec_name="test")
    narrative = "Le gobelin a surpris l'orc par sa vitesse."
    result = format_llm_report(ctx, narrative)

    assert "=== Rapport d'équilibrage ===" in result
    assert "Victoires players : 65.0%" in result
    assert "=== Récit d'équilibrage (LLM) ===" in result
    assert narrative in result
    # factual comes before narrative
    factual_end = result.index("=== Récit d'équilibrage (LLM) ===")
    assert "Victoires players" in result[:factual_end]


def test_format_llm_report_strips_narrative_whitespace() -> None:
    """Leading/trailing whitespace in narrative is stripped."""
    ctx = build_report_context(encounter=_make_encounter(), spec_name="test")
    result = format_llm_report(ctx, "  \n  Texte narratif.  \n  ")

    assert result.endswith("Texte narratif.")
    assert "=== Récit d'équilibrage (LLM) ===\nTexte narratif." in result