"""L1: build del record solved_question dagli artefatti persistiti della sessione.

Il record si costruisce SOLO da cio' che il workflow ha approvato: sql_final.sql
presente + decisione sql_approved nella vista effective; la domanda e' l'ultima
question_rewritten (fallback: la domanda del manifest)."""
from datetime import datetime

import pytest

from tht.decisions import append_decision
from tht.session.models import SessionManifest
from tht.solved import SolvedIndexError, build_solved_record


def _manifest() -> SessionManifest:
    return SessionManifest(
        id="s1", created_at=datetime(2026, 1, 1), question="domanda originale",
        database="db", schema="public",
    )


def test_build_uses_rewritten_question_sql_and_tables(tmp_path):
    (tmp_path / "sql_final.sql").write_text("SELECT 1\n")
    append_decision(tmp_path, type="question_rewritten", subject="domanda",
                    detail="domanda riscritta esplicita")
    append_decision(tmp_path, type="sql_approved", subject="phase:7")
    for n in range(1, 8):
        append_decision(tmp_path, type="phase_approved", subject=f"phase:{n}")
    rec = build_solved_record(tmp_path, _manifest(), {"fact_x", "dim_y"})
    assert rec.id == "solved:s1"
    assert rec.content == "domanda riscritta esplicita"
    assert rec.metadata["sql"] == "SELECT 1"
    assert rec.metadata["tables"] == ["dim_y", "fact_x"]  # ordinate


def test_build_falls_back_to_manifest_question(tmp_path):
    (tmp_path / "sql_final.sql").write_text("SELECT 1")
    append_decision(tmp_path, type="sql_approved", subject="phase:7")
    for n in range(1, 8):
        append_decision(tmp_path, type="phase_approved", subject=f"phase:{n}")
    rec = build_solved_record(tmp_path, _manifest(), None)
    assert rec.content == "domanda originale"
    assert rec.metadata["tables"] == []


def test_build_requires_sql_file(tmp_path):
    append_decision(tmp_path, type="sql_approved", subject="phase:7")
    with pytest.raises(SolvedIndexError, match="sql_final.sql"):
        build_solved_record(tmp_path, _manifest(), None)


def test_build_requires_sql_approved(tmp_path):
    (tmp_path / "sql_final.sql").write_text("SELECT 1")
    with pytest.raises(SolvedIndexError, match="sql_approved"):
        build_solved_record(tmp_path, _manifest(), None)