"""Onglet "Générer avec l'IA" — plusieurs CONVERSATIONS par écran (CRUD,
comme claude.ai, voir plan) : routes/ia/ia_chat.py + screens/ia/.
ANTHROPIC_API_KEY est toujours absente en test (voir tests/conftest.py) :
ces tests exercent donc le chemin de DÉGRADATION GRACIEUSE (message
d'erreur clair, jamais une 500) pour l'envoi de message — pas un appel
réel, quel que soit le .env local du poste."""
import screens


def _create_jeu2d_game(client, tmp_game_slug_cleanup, name="pytest_ia_chat"):
    resp = client.post("/games/new", data={"name": name}, follow_redirects=False)
    slug = tmp_game_slug_cleanup(resp.headers["Location"].rstrip("/").split("/")[-1])
    screen_id = screens.create_screen(slug, "Scène 1", kind="jeu_2d")
    return slug, screen_id


def test_create_and_list_conversations(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    resp = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations")
    assert resp.status_code == 200
    conversation = resp.get_json()
    assert conversation["title"] == "Nouvelle conversation"

    resp2 = client.get(f"/game/{slug}/screens/{screen_id}/ia-conversations")
    assert resp2.status_code == 200
    ids = [c["id"] for c in resp2.get_json()]
    assert conversation["id"] in ids


def test_conversations_are_isolated_per_screen(client, tmp_game_slug_cleanup):
    slug, screen_id_1 = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    screen_id_2 = screens.create_screen(slug, "Scène 2", kind="jeu_2d")
    client.post(f"/game/{slug}/screens/{screen_id_1}/ia-conversations")

    resp = client.get(f"/game/{slug}/screens/{screen_id_2}/ia-conversations")
    assert resp.get_json() == []


def test_delete_conversation_removes_it_from_the_list(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()

    resp = client.delete(f"/game/{slug}/ia-conversations/{conversation['id']}")
    assert resp.status_code == 200

    remaining = client.get(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()
    assert all(c["id"] != conversation["id"] for c in remaining)


def test_delete_unknown_conversation_404s(client, game):
    resp = client.delete(f"/game/{game}/ia-conversations/999999")
    assert resp.status_code == 404


def test_send_message_persists_it_and_a_graceful_error_reply(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()

    resp = client.post(
        f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "Génère un dialogue"}
    )
    assert resp.status_code == 200
    body = resp.get_json()
    assert body["user_message"]["content"] == "Génère un dialogue"
    assert body["user_message"]["role"] == "user"
    assert body["assistant_message"]["role"] == "assistant"
    assert "Configuration IA incomplète" in body["assistant_message"]["content"]


def test_send_message_rejects_an_empty_message(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()
    resp = client.post(f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "   "})
    assert resp.status_code == 400


def test_send_message_404s_for_an_unknown_conversation(client, game):
    resp = client.post(f"/game/{game}/ia-conversations/999999/messages", json={"message": "salut"})
    assert resp.status_code == 404


def test_messages_history_is_persisted_and_ordered(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()

    client.post(f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "premier"})
    client.post(f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "second"})

    resp = client.get(f"/game/{slug}/ia-conversations/{conversation['id']}/messages")
    assert resp.status_code == 200
    messages = resp.get_json()
    user_contents = [m["content"] for m in messages if m["role"] == "user"]
    assert user_contents == ["premier", "second"]


def test_messages_are_isolated_per_conversation(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation_1 = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()
    conversation_2 = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()

    client.post(f"/game/{slug}/ia-conversations/{conversation_1['id']}/messages", json={"message": "pour la 1ère"})

    resp = client.get(f"/game/{slug}/ia-conversations/{conversation_2['id']}/messages")
    assert resp.get_json() == []


def test_first_user_message_renames_the_conversation(client, tmp_game_slug_cleanup):
    slug, screen_id = _create_jeu2d_game(client, tmp_game_slug_cleanup)
    conversation = client.post(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()

    client.post(f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "Crée un fond de bureau"})

    conversations = client.get(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()
    updated = next(c for c in conversations if c["id"] == conversation["id"])
    assert updated["title"] == "Crée un fond de bureau"

    # Un deuxième message ne renomme plus (titre déjà dérivé du premier).
    client.post(f"/game/{slug}/ia-conversations/{conversation['id']}/messages", json={"message": "et une variable"})
    conversations2 = client.get(f"/game/{slug}/screens/{screen_id}/ia-conversations").get_json()
    updated2 = next(c for c in conversations2 if c["id"] == conversation["id"])
    assert updated2["title"] == "Crée un fond de bureau"