from src.seo.autofill import ALLOWED_TAGS, DEFAULT_TAG, _coerce, _system_prompt

BASE = {
    "meta_title": "t",
    "meta_description": "d",
    "custom_excerpt": "e",
    "image_query": "q",
    "image_context": "c",
}


def test_coerce_es_drops_invented_tags():
    obj = dict(BASE, tags=["uap", "humanoides", "Desclasificados", "investigacion-2"])
    out = _coerce(obj, "es")
    assert out["tags"] == ["uap", "desclasificados"]


def test_coerce_es_falls_back_to_default():
    obj = dict(BASE, tags=["pentagono", "encuentros-cercanos"])
    out = _coerce(obj, "es")
    assert out["tags"] == [DEFAULT_TAG["es"]]


def test_coerce_en_still_constrained():
    obj = dict(BASE, tags=["uap", "investigacion"])
    out = _coerce(obj, "en")
    assert out["tags"] == ["uap"]


def test_system_prompt_lists_allowed_tags_per_lang():
    es = _system_prompt("es")
    en = _system_prompt("en")
    for tag in ALLOWED_TAGS["es"]:
        assert tag in es
    # La regla anti-legacy 'never use "investigacion"' es solo para EN: en ES
    # "investigacion" es el tag canónico del allow-list.
    assert 'never use "investigacion"' in en
    assert 'never use "investigacion"' not in es
    assert "ONLY from this exact list" in es