# ==============================================================================
# Author: Simon-Pierre Boucher <contact@spboucher.ai>
# File:   tests/test_identity.py
# Desc:   Tests de résolution d'identité & déduplication — cas multi-plateformes
#         + cas-pièges d'HOMONYMES à ne jamais fusionner (§12, §18)
# ==============================================================================
from creaka.dedup import dedupe, merge_creators, should_merge
from creaka.identity import account, merge_accounts
from creaka.schema import Creator


def _creator(name, accounts, **kw):
    return Creator(source="test", external_id="", display_name=name,
                   platforms=accounts, **kw).finalize()


def test_homonymes_jamais_fusionnes():
    """Deux personnes au même nom SANS compte partagé → deux fiches (§12.2)."""
    a = _creator("Alex Tremblay", [account("instagram", "alex.gaming", "listes_medias")])
    b = _creator("Alex Tremblay", [account("instagram", "alexcuisine", "listes_medias")])
    assert not should_merge(a, b)
    assert len(dedupe([a, b])) == 2


def test_fusion_sur_compte_fort_partage():
    a = _creator("Nom Scène", [account("instagram", "nomscene", "listes_medias"),
                               account("youtube", "nomscene", "listes_medias")])
    b = _creator("Nom Scene", [account("instagram", "nomscene", "link_in_bio"),
                               account("twitch", "nomscene_tv", "link_in_bio")])
    assert should_merge(a, b)
    merged = dedupe([a, b])
    assert len(merged) == 1
    keys = {acc.key for acc in merged[0].platforms}
    # union : on ne perd AUCUN lien vérifié
    assert keys == {"instagram:nomscene", "youtube:nomscene", "twitch:nomscene_tv"}


def test_pas_de_fusion_sur_compte_faible():
    """Un compte partagé à confiance basse ne suffit pas (sous STRONG_THRESHOLD)."""
    a = _creator("Personne Un", [account("instagram", "commun", "mention"),
                                 account("youtube", "personneun", "listes_medias")])
    b = _creator("Personne Deux", [account("instagram", "commun", "mention"),
                                   account("tiktok", "personnedeux", "listes_medias")])
    assert not should_merge(a, b)


def test_merge_accounts_meilleure_confiance():
    old = [account("instagram", "nom", "handle_match", followers=1000).finalize()]
    new = [account("instagram", "nom", "link_in_bio").finalize()]
    merged = merge_accounts(old, new)
    assert len(merged) == 1
    assert merged[0].confidence == 0.95      # link_in_bio gagne
    assert merged[0].followers == 1000       # métrique conservée


def test_merge_creators_regime_mineur_et_optout():
    a = _creator("Jeune Talent", [account("tiktok", "jeune", "listes_medias")],
                 region="Montréal", city="Montréal")
    b = _creator("Jeune Talent", [account("tiktok", "jeune", "link_in_bio")],
                 is_minor=True)
    merged = merge_creators(a, b)
    assert merged.is_minor is True
    assert merged.region is None and merged.city is None  # régime restreint §15