Forge-Engine/tests/document/test_document_routes.py

"""Routes HTTP du support de formation (routes/document/) — création,
édition directe (sans page intermédiaire), CRUD des éléments en AJAX,
publication, et isolation par propriétaire (core/auth_guard.py).

Chaque élément appartient désormais à une page (voir document_engine/
pages/ et test_document_pages_routes.py pour les routes dédiées aux
pages elles-mêmes) — _page_id() renvoie l'id de la page par défaut
("Page 1") créée avec chaque support de test, réutilisé par toutes les
routes d'élément ci-dessous qui exigent désormais un page_id explicite."""

import io
from typing import Any

from flask.testing import FlaskClient

import auth
import db
import document_engine


def _page_id(support: str) -> int:
    return int(document_engine.list_document_pages(support)[0]["id"])


def test_documents_new_creates_a_support_not_a_game(client: FlaskClient) -> None:
    resp = client.post("/documents/new", data={"name": "Sécurité incendie"}, follow_redirects=False)
    assert resp.status_code == 302
    assert "/document/" in resp.headers["Location"]
    assert "/edit" in resp.headers["Location"]
    slug = resp.headers["Location"].rstrip("/").split("/")[-2]
    try:
        assert db.support_meta(slug)["name"] == "Sécurité incendie"
    finally:
        db.delete_support(slug)


def test_document_edit_renders_directly_no_intermediate_page(client: FlaskClient, support: str) -> None:
    resp = client.get(f"/document/{support}/edit")
    assert resp.status_code == 200


def test_document_edit_works_on_a_support_with_zero_pages(client: FlaskClient, support: str) -> None:
    # Retour utilisateur du 26/09/2026 : "l'éditeur ne dois plus etre
    # obliger d'avoir une page active ou créer, il peut etre ouvert sans
    # aucune page" — un support neuf (ou vidé via "Supprimer toutes les
    # pages") n'a plus de page active, l'éditeur ne doit pas planter.
    client.post(f"/document/{support}/pages/delete-all")
    resp = client.get(f"/document/{support}/edit")
    assert resp.status_code == 200
    html = resp.get_data(as_text=True)
    assert "activePageId: null" in html
    assert "pages: []" in html


def test_document_element_add_returns_rendered_html(client: FlaskClient, support: str) -> None:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": _page_id(support)})
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["kind"] == "titre"
    assert "docText" in payload["rendered_html"]


def test_document_element_add_rejects_unknown_kind(client: FlaskClient, support: str) -> None:
    resp = client.post(
        f"/document/{support}/elements/add", data={"kind": "n-importe-quoi", "page_id": _page_id(support)}
    )
    assert resp.status_code == 400


def test_document_element_add_rejects_a_missing_or_unknown_page(client: FlaskClient, support: str) -> None:
    assert client.post(f"/document/{support}/elements/add", data={"kind": "titre"}).status_code == 404
    assert client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": 999}).status_code == 404


def test_document_element_add_accepts_row_for_the_layout_engine(client: FlaskClient, support: str) -> None:
    """ "row" n'apparaît jamais dans la bibliothèque (voir
    document_engine.ELEMENT_LIBRARY) mais reste un kind valide pour cette
    route — c'est le moteur de layout côté client qui en crée une à la
    volée au moment d'un dépôt latéral (voir
    static/document/js/document-editor.js)."""
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "row", "page_id": _page_id(support)})
    assert resp.status_code == 200
    assert resp.get_json()["kind"] == "row"


def test_document_element_add_creates_a_bullet_list(client: FlaskClient, support: str) -> None:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "liste_puces", "page_id": _page_id(support)})
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["kind"] == "liste_puces"
    assert "<ul" in payload["rendered_html"]
    assert "docList" in payload["rendered_html"]


def test_document_element_add_creates_a_numbered_list(client: FlaskClient, support: str) -> None:
    resp = client.post(
        f"/document/{support}/elements/add", data={"kind": "liste_numerotee", "page_id": _page_id(support)}
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["kind"] == "liste_numerotee"
    assert "<ol" in payload["rendered_html"]


def test_document_element_update_persists_attributes(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    add_resp = client.post(f"/document/{support}/elements/add", data={"kind": "paragraphe", "page_id": page_id})
    element_id = add_resp.get_json()["id"]

    resp = client.post(
        f"/document/{support}/elements/{element_id}/update",
        json={"content": "Texte mis à jour", "style": "legende"},
    )
    assert resp.status_code == 200
    assert resp.get_json()["ok"] is True

    reread = client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})
    assert reread.status_code == 200


def test_document_element_update_sanitizes_quiz_config_on_write(client: FlaskClient, support: str) -> None:
    """Quiz et Association sont revalidés côté serveur (voir
    routes/document/document_element_update.py) : un choix en trop
    (5e) doit être tronqué, et la réponse renvoie les attributs
    RÉELLEMENT persistés (pas ceux envoyés tels quels) pour que le
    client ne dérive jamais de la vérité serveur."""
    add_resp = client.post(f"/document/{support}/elements/add", data={"kind": "quiz", "page_id": _page_id(support)})
    element_id = add_resp.get_json()["id"]

    resp = client.post(
        f"/document/{support}/elements/{element_id}/update",
        json={
            "theme_color": "#ff5f2e",
            "timer_enabled": False,
            "timer_seconds": 30,
            "questions": [
                {"text": "Une question", "choices": ["A", "B", "C", "D", "E"], "correct_index": 0, "points": 10},
            ],
        },
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["ok"] is True
    assert payload["attributes"]["questions"][0]["choices"] == ["A", "B", "C", "D"]
    assert "1 question" in payload["rendered_html"]


def test_document_element_update_sanitizes_association_config_on_write(client: FlaskClient, support: str) -> None:
    add_resp = client.post(
        f"/document/{support}/elements/add", data={"kind": "association", "page_id": _page_id(support)}
    )
    element_id = add_resp.get_json()["id"]

    resp = client.post(
        f"/document/{support}/elements/{element_id}/update",
        json={
            "theme_color": "#ffb020",
            "pairs": [
                {"left": "Chat", "right": "Un félin"},
                {"left": "Sans correspondance", "right": ""},
            ],
        },
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["ok"] is True
    assert payload["attributes"]["pairs"] == [{"left": "Chat", "right": "Un félin"}]
    assert "1 paire" in payload["rendered_html"]


def test_document_element_update_sanitizes_memory_config_on_write(client: FlaskClient, support: str) -> None:
    add_resp = client.post(f"/document/{support}/elements/add", data={"kind": "memory", "page_id": _page_id(support)})
    element_id = add_resp.get_json()["id"]

    resp = client.post(
        f"/document/{support}/elements/{element_id}/update",
        json={
            "theme_color": "#ffb020",
            "mode": "single",
            "cards": [
                {"recto": {"text": "?"}, "verso": {"text": "Chat"}},
                {"recto": {"text": "?"}, "verso": {"image": "", "text": ""}},
            ],
        },
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["ok"] is True
    assert payload["attributes"]["mode"] == "single"
    assert len(payload["attributes"]["cards"]) == 1
    assert "1 carte" in payload["rendered_html"]
    assert "mode simple" in payload["rendered_html"]


def test_document_edit_sanitizes_stale_scenario_attributes_from_an_old_schema(
    client: FlaskClient, support: str
) -> None:
    """Bug réel constaté le 21/09/2026 : un élément Scénario créé AVANT la
    refonte en arbre de décision (ancien schéma plat "situation"/"choices"/
    "correct_index", sans "title"/"nodes") faisait planter silencieusement
    le panneau Propriétés côté client (`scenario.nodes` inexistant), sans
    qu'aucune erreur ne remonte — voir document_engine/labels/
    sanitize_element_attributes.py. `update_document_element_attributes`
    (bas niveau, jamais utilisée directement par une route) sert ici à
    écrire ce schéma obsolète tel quel, en contournant volontairement le
    sanitize de la route d'update — pour simuler une ligne réellement
    ancienne en base, jamais nettoyée depuis."""
    page_id = _page_id(support)
    add_resp = client.post(f"/document/{support}/elements/add", data={"kind": "scenario", "page_id": page_id})
    element_id = add_resp.get_json()["id"]
    stale_attributes = {
        "theme_color": "#ff5f2e",
        "scenarios": [
            {
                "situation": "Un chat va se faire renverser sous vos yeux, que faites-vous ?",
                "choices": [{"text": "Je le sauve", "consequence": "Le chat est sauvé."}],
                "correct_index": 0,
            }
        ],
    }
    document_engine.update_document_element_attributes(support, element_id, stale_attributes)

    edit_resp = client.get(f"/document/{support}/edit")
    assert edit_resp.status_code == 200
    render_resp = client.get(f"/document/{support}/render", query_string={"page_id": page_id})
    assert render_resp.status_code == 200
    rendered_element = next(el for el in render_resp.get_json()["elements"] if el["id"] == element_id)
    # Le vieux schéma n'a ni "title" ni "nodes" valides : sanitize_scenario_config
    # le rejette entièrement plutôt que de renvoyer une structure à moitié
    # ancienne/à moitié nouvelle — c'est la structure ACTUELLE garantie qui
    # compte ici, jamais un plantage silencieux côté client.
    assert rendered_element["attributes"] == document_engine.DEFAULT_SCENARIO_CONFIG


def test_document_render_rejects_a_missing_or_unknown_page(client: FlaskClient, support: str) -> None:
    assert client.get(f"/document/{support}/render").status_code == 404
    assert client.get(f"/document/{support}/render", query_string={"page_id": 999}).status_code == 404


def test_document_render_includes_the_page_vertical_align(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    client.post(f"/document/{support}/pages/{page_id}/vertical-align", json={"vertical_align": "center"})
    resp = client.get(f"/document/{support}/render", query_string={"page_id": page_id})
    assert resp.status_code == 200
    assert resp.get_json()["vertical_align"] == "center"


def test_document_edit_reflects_the_active_page_vertical_align(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    client.post(f"/document/{support}/pages/{page_id}/vertical-align", json={"vertical_align": "center"})
    resp = client.get(f"/document/{support}/edit")
    assert 'data-vertical-align="center"' in resp.get_data(as_text=True)


def test_document_element_add_rejects_a_minigame_on_a_non_empty_page(client: FlaskClient, support: str) -> None:
    """Retour utilisateur du 23/09/2026 : "un mini jeu dois occupper
    toute une page" -> "une page avec mini-jeu = uniquement ce
    mini-jeu". Un mini-jeu ne peut donc jamais rejoindre une page qui a
    déjà du contenu."""
    page_id = _page_id(support)
    client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})

    resp = client.post(f"/document/{support}/elements/add", data={"kind": "quiz", "page_id": page_id})
    assert resp.status_code == 400
    assert "mini-jeu" in resp.get_json()["error"]


def test_document_element_add_rejects_other_content_on_a_page_with_a_minigame(
    client: FlaskClient, support: str
) -> None:
    page_id = _page_id(support)
    client.post(f"/document/{support}/elements/add", data={"kind": "quiz", "page_id": page_id})

    resp = client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})
    assert resp.status_code == 400
    assert "mini-jeu" in resp.get_json()["error"]


def test_document_element_add_rejects_a_minigame_inside_a_row(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    row_id = client.post(f"/document/{support}/elements/add", data={"kind": "row", "page_id": page_id}).get_json()["id"]

    resp = client.post(
        f"/document/{support}/elements/add", data={"kind": "quiz", "page_id": page_id, "parent_id": row_id}
    )
    assert resp.status_code == 400


def test_document_element_add_allows_a_lone_minigame_on_an_empty_page(client: FlaskClient, support: str) -> None:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "quiz", "page_id": _page_id(support)})
    assert resp.status_code == 200


def test_document_element_move_and_delete(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    first_id = client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id}).get_json()[
        "id"
    ]
    second_id = client.post(
        f"/document/{support}/elements/add", data={"kind": "paragraphe", "page_id": page_id}
    ).get_json()["id"]

    move_resp = client.post(
        f"/document/{support}/elements/{second_id}/move",
        json={"new_parent_id": None, "new_index": 0},
    )
    assert move_resp.status_code == 200
    assert move_resp.get_json()["ok"] is True

    delete_resp = client.post(f"/document/{support}/elements/{first_id}/delete")
    assert delete_resp.status_code == 200
    assert delete_resp.get_json()["ok"] is True


def test_document_element_move_to_page_transfers_the_element(client: FlaskClient, support: str) -> None:
    """Retour utilisateur du 23/09/2026 : pagination automatique — un
    élément qui déborde d'une page est déplacé vers une autre, ici la
    route qui porte ce déplacement (jamais document_element_move, qui
    ne fait que réordonner DANS la même page)."""
    page1_id = _page_id(support)
    page2_id = document_engine.add_document_page(support)
    element_id = client.post(
        f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page1_id}
    ).get_json()["id"]

    resp = client.post(f"/document/{support}/elements/{element_id}/move-to-page", json={"target_page_id": page2_id})
    assert resp.status_code == 200
    assert resp.get_json()["ok"] is True
    moved = document_engine.get_document_element(support, element_id)
    assert moved is not None
    assert moved["page_id"] == page2_id


def test_document_element_move_to_page_rejects_an_unknown_target(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    element_id = client.post(
        f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id}
    ).get_json()["id"]

    resp = client.post(f"/document/{support}/elements/{element_id}/move-to-page", json={"target_page_id": 999})
    assert resp.status_code == 404


def test_restricted_user_can_have_one_game_and_one_support_at_once(
    user_client: FlaskClient, tmp_game_slug_cleanup: Any, tmp_support_slug_cleanup: Any
) -> None:
    with user_client.session_transaction() as sess:
        user_id = sess["user_id"]
    game_slug = db.create_game("Un environnement 2D", owner_folder=str(user_id))
    tmp_game_slug_cleanup(game_slug)
    auth.set_project_slug(user_id, game_slug)

    resp = user_client.post("/documents/new", data={"name": "Un support"}, follow_redirects=False)
    assert resp.status_code == 302
    support_slug = resp.headers["Location"].rstrip("/").split("/")[-2]
    tmp_support_slug_cleanup(support_slug)

    user = auth.get_user_by_id(user_id)
    assert user is not None
    assert user["project_slug"] == game_slug
    assert user["support_slug"] == support_slug


def test_cannot_open_another_owners_support(client: FlaskClient, user_client: FlaskClient) -> None:
    """Isolation par propriétaire (core/auth_guard.py, split_slug déjà
    générique quel que soit le type de projet) — le compte admin
    (`client`) ne doit pas pouvoir ouvrir le support d'un autre compte."""
    with user_client.session_transaction() as sess:
        victim_user_id = sess["user_id"]
    victim_slug = db.create_support("Support de la victime", owner_folder=str(victim_user_id))
    try:
        assert client.get(f"/document/{victim_slug}/edit").status_code == 403
        assert client.post(f"/document/{victim_slug}/delete").status_code == 403
    finally:
        db.delete_support(victim_slug)


def _add_bouton(client: FlaskClient, support: str) -> int:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "bouton", "page_id": _page_id(support)})
    return int(resp.get_json()["id"])


def test_upload_attachment_stores_file_and_updates_button_attributes(client: FlaskClient, support: str) -> None:
    element_id = _add_bouton(client, support)
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-attachment",
        data={"file": (io.BytesIO(b"%PDF-1.4 fake pdf content"), "fiche-consignes.pdf")},
        content_type="multipart/form-data",
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["attributes"]["attachment_filename"] == "fiche-consignes.pdf"
    assert payload["attributes"]["attachment_stored_name"]
    assert 'data-attachment-filename="fiche-consignes.pdf"' in payload["rendered_html"]


def test_upload_attachment_rejects_a_non_bouton_element(client: FlaskClient, support: str) -> None:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": _page_id(support)})
    element_id = resp.get_json()["id"]
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-attachment",
        data={"file": (io.BytesIO(b"peu importe"), "x.pdf")},
        content_type="multipart/form-data",
    )
    assert resp.status_code == 400


def test_upload_attachment_rejects_a_missing_file(client: FlaskClient, support: str) -> None:
    element_id = _add_bouton(client, support)
    resp = client.post(f"/document/{support}/elements/{element_id}/upload-attachment", data={})
    assert resp.status_code == 400


def test_download_attachment_serves_the_file_under_its_original_name(client: FlaskClient, support: str) -> None:
    element_id = _add_bouton(client, support)
    client.post(
        f"/document/{support}/elements/{element_id}/upload-attachment",
        data={"file": (io.BytesIO(b"%PDF-1.4 fake pdf content"), "fiche-consignes.pdf")},
        content_type="multipart/form-data",
    )
    resp = client.get(f"/document/{support}/elements/{element_id}/download-attachment")
    assert resp.status_code == 200
    assert resp.data == b"%PDF-1.4 fake pdf content"
    assert "fiche-consignes.pdf" in resp.headers["Content-Disposition"]


def test_download_attachment_404s_when_nothing_was_uploaded(client: FlaskClient, support: str) -> None:
    element_id = _add_bouton(client, support)
    resp = client.get(f"/document/{support}/elements/{element_id}/download-attachment")
    assert resp.status_code == 404


def _add_image(client: FlaskClient, support: str) -> int:
    resp = client.post(f"/document/{support}/elements/add", data={"kind": "image", "page_id": _page_id(support)})
    return int(resp.get_json()["id"])


def test_upload_image_sets_src_and_clears_svg_markup(client: FlaskClient, support: str) -> None:
    element_id = _add_image(client, support)
    document_engine.update_document_element_attributes(support, element_id, {"svg_markup": "<svg></svg>"})
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-image",
        data={"file": (io.BytesIO(b"fake png bytes"), "photo.png")},
        content_type="multipart/form-data",
    )
    assert resp.status_code == 200
    payload = resp.get_json()
    assert payload["ok"] is True
    assert payload["attributes"]["svg_markup"] == ""
    src = payload["attributes"]["src"]
    assert f"/document/{support}/uploads/" in src
    assert f'src="{src}"' in payload["rendered_html"]


def test_upload_image_rejects_a_non_image_element(client: FlaskClient, support: str) -> None:
    element_id = _add_bouton(client, support)
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-image",
        data={"file": (io.BytesIO(b"peu importe"), "x.png")},
        content_type="multipart/form-data",
    )
    assert resp.status_code == 400


def test_upload_image_rejects_a_missing_file(client: FlaskClient, support: str) -> None:
    element_id = _add_image(client, support)
    resp = client.post(f"/document/{support}/elements/{element_id}/upload-image", data={})
    assert resp.status_code == 400


def test_upload_image_rejects_a_disallowed_extension(client: FlaskClient, support: str) -> None:
    element_id = _add_image(client, support)
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-image",
        data={"file": (io.BytesIO(b"#!/bin/sh"), "script.sh")},
        content_type="multipart/form-data",
    )
    assert resp.status_code == 400


def test_uploaded_file_serves_the_stored_image(client: FlaskClient, support: str) -> None:
    element_id = _add_image(client, support)
    resp = client.post(
        f"/document/{support}/elements/{element_id}/upload-image",
        data={"file": (io.BytesIO(b"fake png bytes"), "photo.png")},
        content_type="multipart/form-data",
    )
    src = resp.get_json()["attributes"]["src"]
    resp = client.get(src)
    assert resp.status_code == 200
    assert resp.data == b"fake png bytes"


def test_uploaded_file_404s_for_an_unknown_filename(client: FlaskClient, support: str) -> None:
    resp = client.get(f"/document/{support}/uploads/inconnu.png")
    assert resp.status_code == 404


def test_document_edit_has_no_theme_link_by_default(client: FlaskClient, support: str) -> None:
    resp = client.get(f"/document/{support}/edit")
    assert "document/themes/securite-incendie.css" not in resp.get_data(as_text=True)


def test_document_theme_apply_rejects_an_unknown_theme(client: FlaskClient, support: str) -> None:
    resp = client.post(
        f"/document/{support}/theme/apply",
        json={"theme_id": "n-importe-quoi", "mode": "keep_content"},
    )
    assert resp.status_code == 404


def test_document_theme_apply_rejects_an_invalid_mode(client: FlaskClient, support: str) -> None:
    resp = client.post(
        f"/document/{support}/theme/apply",
        json={"theme_id": "securite-incendie", "mode": "n-importe-quoi"},
    )
    assert resp.status_code == 400


def test_document_theme_apply_keep_content_only_sets_the_theme(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})

    resp = client.post(
        f"/document/{support}/theme/apply",
        json={"theme_id": "securite-incendie", "mode": "keep_content"},
    )
    assert resp.status_code == 200
    assert db.get_document_theme(support) == "securite-incendie"
    assert len(document_engine.list_document_elements(support, page_id)) == 1

    edit_resp = client.get(f"/document/{support}/edit")
    assert "document/themes/securite-incendie.css" in edit_resp.get_data(as_text=True)


def test_document_theme_apply_template_content_replaces_everything(client: FlaskClient, support: str) -> None:
    page_id = _page_id(support)
    client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})

    resp = client.post(
        f"/document/{support}/theme/apply",
        json={"theme_id": "securite-incendie", "mode": "template_content"},
    )
    assert resp.status_code == 200
    pages = document_engine.list_document_pages(support)
    theme = document_engine.get_document_theme_entry("securite-incendie")
    assert theme is not None
    assert len(pages) == len(theme["seed_pages"])


def test_document_theme_apply_with_empty_theme_id_removes_the_theme(client: FlaskClient, support: str) -> None:
    # Retour utilisateur du 26/09/2026 : la modale "Utiliser un modèle"
    # propose une carte "Aucun modèle" pour "revenir à un document de
    # base" — theme_id vide est le signal que la route interprète comme
    # un retrait, jamais comme une erreur de validation.
    page_id = _page_id(support)
    client.post(f"/document/{support}/elements/add", data={"kind": "titre", "page_id": page_id})
    client.post(
        f"/document/{support}/theme/apply",
        json={"theme_id": "securite-incendie", "mode": "keep_content"},
    )
    assert db.get_document_theme(support) == "securite-incendie"

    resp = client.post(f"/document/{support}/theme/apply", json={"theme_id": ""})
    assert resp.status_code == 200
    assert resp.get_json() == {"ok": True, "theme_id": ""}
    # Retire vraiment la ligne _meta (voir db/supports/remove_document_theme.py)
    # — jamais une chaîne vide qui violerait le contrat documenté de
    # get_document_theme ("None" = aucun thème jamais appliqué/retiré).
    assert db.get_document_theme(support) is None
    # Le contenu n'est JAMAIS touché en retirant le thème.
    assert len(document_engine.list_document_elements(support, page_id)) == 1

    edit_resp = client.get(f"/document/{support}/edit")
    assert "document/themes/securite-incendie.css" not in edit_resp.get_data(as_text=True)


def test_document_theme_apply_with_empty_theme_id_ignores_mode(client: FlaskClient, support: str) -> None:
    resp = client.post(f"/document/{support}/theme/apply", json={"theme_id": "", "mode": "n-importe-quoi"})
    assert resp.status_code == 200
    assert db.get_document_theme(support) is None


def test_document_theme_preview_renders_every_seed_page_with_navigation(client: FlaskClient, support: str) -> None:
    resp = client.get(f"/document/{support}/theme/securite-incendie/preview")
    assert resp.status_code == 200
    html = resp.get_data(as_text=True)
    theme = document_engine.get_document_theme_entry("securite-incendie")
    assert theme is not None
    page_count = len(theme["seed_pages"])
    assert html.count('class="docPage"') == page_count
    # Une seule page visible au chargement (les autres portent `hidden`,
    # navigation gérée côté client — voir templates/document/
    # document_theme_preview.html).
    assert html.count("hidden>") == page_count - 1
    assert "previewNav" in html


def test_document_theme_preview_404s_for_an_unknown_theme(client: FlaskClient, support: str) -> None:
    resp = client.get(f"/document/{support}/theme/n-importe-quoi/preview")
    assert resp.status_code == 404