"""CRUD des éléments d'un support de formation (document_engine/elements/)
— sans Flask, directement contre le support.db créé par db.create_support.
Couvre : CRUD complet, rangées (parent_id), réinsertion (move_document_element
vers une nouvelle rangée/position), suppression en cascade d'une rangée avec
enfants, et les attributs de position/taille/rotation d'une forme."""

from typing import Any

import db
import document_engine as doc_engine


def _new_support(tmp_support_slug_cleanup: Any, name: str = "Support de test") -> str:
    slug = db.create_support(name, owner_folder="90")
    tmp_support_slug_cleanup(slug)
    return slug


def test_add_and_get_document_element_uses_default_attributes(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    element_id = doc_engine.add_document_element(slug, "titre")
    element = doc_engine.get_document_element(slug, element_id)
    assert element is not None
    assert element["kind"] == "titre"
    assert element["parent_id"] is None
    assert element["attributes"]["content"] == "Nouveau titre"


def test_get_document_element_returns_none_for_missing_id(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    assert doc_engine.get_document_element(slug, 999) is None


def test_list_document_elements_groups_row_children_together(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    row_id = doc_engine.add_document_element(slug, "row")
    top_titre_id = doc_engine.add_document_element(slug, "titre")
    child_a_id = doc_engine.add_document_element(slug, "paragraphe", parent_id=row_id)
    child_b_id = doc_engine.add_document_element(slug, "image", parent_id=row_id)

    elements = doc_engine.list_document_elements(slug)
    ids_in_order = [el["id"] for el in elements]

    # Les deux top-niveau (row_id, top_titre_id) groupés avant les deux
    # enfants de la rangée (child_a_id, child_b_id) — tri (parent_id, order_index).
    assert ids_in_order.index(row_id) < ids_in_order.index(child_a_id)
    assert ids_in_order.index(top_titre_id) < ids_in_order.index(child_a_id)
    assert ids_in_order.index(child_a_id) < ids_in_order.index(child_b_id)


def test_update_document_element_attributes_replaces_whole_json(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    element_id = doc_engine.add_document_element(slug, "paragraphe")
    doc_engine.update_document_element_attributes(slug, element_id, {"content": "Texte modifié", "style": "legende"})
    element = doc_engine.get_document_element(slug, element_id)
    assert element is not None
    assert element["attributes"] == {"content": "Texte modifié", "style": "legende"}


def test_shape_default_attributes_carry_real_position_and_size(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    element_id = doc_engine.add_document_element(slug, "rectangle")
    element = doc_engine.get_document_element(slug, element_id)
    assert element is not None
    attrs = element["attributes"]
    assert attrs["x"] == 40
    assert attrs["y"] == 40
    assert attrs["width"] == 160
    assert attrs["height"] == 100
    assert attrs["rotation"] == 0
    assert attrs["z_index"] == 1

    doc_engine.update_document_element_attributes(
        slug,
        element_id,
        {**attrs, "x": 120, "y": 80, "width": 200, "height": 150, "rotation": 45, "z_index": 3},
    )
    moved = doc_engine.get_document_element(slug, element_id)
    assert moved is not None
    assert moved["attributes"]["x"] == 120
    assert moved["attributes"]["rotation"] == 45
    assert moved["attributes"]["z_index"] == 3


def test_move_document_element_reorders_within_same_parent(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    first_id = doc_engine.add_document_element(slug, "titre")
    second_id = doc_engine.add_document_element(slug, "paragraphe")
    third_id = doc_engine.add_document_element(slug, "image")

    doc_engine.move_document_element(slug, third_id, None, 0)

    elements = doc_engine.list_document_elements(slug)
    top_level = [el for el in elements if el["parent_id"] is None]
    ordered_ids = [el["id"] for el in sorted(top_level, key=lambda el: el["order_index"])]
    assert ordered_ids == [third_id, first_id, second_id]


def test_move_document_element_reparents_into_a_row(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    row_id = doc_engine.add_document_element(slug, "row")
    lone_titre_id = doc_engine.add_document_element(slug, "titre")

    doc_engine.move_document_element(slug, lone_titre_id, row_id, 0)

    moved = doc_engine.get_document_element(slug, lone_titre_id)
    assert moved is not None
    assert moved["parent_id"] == row_id
    assert moved["order_index"] == 0


def test_delete_document_element_cascades_to_row_children(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    row_id = doc_engine.add_document_element(slug, "row")
    child_id = doc_engine.add_document_element(slug, "titre", parent_id=row_id)

    doc_engine.delete_document_element(slug, row_id)

    assert doc_engine.get_document_element(slug, row_id) is None
    assert doc_engine.get_document_element(slug, child_id) is None


def test_delete_document_element_on_missing_id_is_a_noop(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    doc_engine.delete_document_element(slug, 999)


def test_render_document_includes_row_children_and_shape_position(tmp_support_slug_cleanup: Any) -> None:
    slug = _new_support(tmp_support_slug_cleanup)
    row_id = doc_engine.add_document_element(slug, "row")
    doc_engine.add_document_element(slug, "titre", parent_id=row_id)
    rect_id = doc_engine.add_document_element(slug, "rectangle")

    html = doc_engine.render_document(doc_engine.list_document_elements(slug))

    assert 'data-kind="row"' in html
    assert 'data-kind="titre"' in html
    assert f'data-element-id="{rect_id}"' in html
    assert "left:40px" in html
    assert "top:40px" in html