"""D6 §5.2: the manifest's new fields are actually written (not just declared).

The reference bug: author/summary/updated_at/updated_by/schema_version existed on the
model but no code ever populated them. These tests pin that create_session fills them
and that mutations (set_question, touch_manifest) bump updated_at/updated_by.
"""
from tht.config import DatabaseConfig
from tht.session.store import create_session, load_session, set_question, touch_manifest


def _db() -> DatabaseConfig:
    return DatabaseConfig(host="h", port=5432, database="dw", user="u", password="p", schema="dwh")


def test_create_session_populates_new_fields(tmp_path, monkeypatch):
    monkeypatch.setenv("THT_AUTHOR", "alice@psd")
    m = create_session("Quanti ricoveri per ablazione nel 2024?", _db(), tmp_path)
    assert m.author == "alice@psd"
    assert m.updated_by == "alice@psd"
    assert m.summary and m.summary.startswith("Quanti ricoveri")
    assert m.created_at is not None
    assert m.updated_at == m.created_at
    assert m.schema_version is not None  # from workflow.yaml


def test_default_author_when_env_absent(tmp_path, monkeypatch):
    monkeypatch.delenv("THT_AUTHOR", raising=False)
    m = create_session("x", _db(), tmp_path)
    assert m.author == "dev@local"


def test_touch_manifest_bumps_updated(tmp_path, monkeypatch):
    monkeypatch.setenv("THT_AUTHOR", "alice@psd")
    m = create_session("domanda", _db(), tmp_path)
    created = m.updated_at
    monkeypatch.setenv("THT_AUTHOR", "bob@psd")
    set_question(m.id, "domanda riscritta", [], tmp_path)
    reloaded = load_session(m.id, tmp_path)
    assert reloaded.updated_by == "bob@psd"
    assert reloaded.updated_at >= created
    # touch_manifest helper is reachable and updates the field
    touch_manifest(m.id, tmp_path, updated_by="carol@psd")
    assert load_session(m.id, tmp_path).updated_by == "carol@psd"