"""Tests d'immuabilité des modèles Pydantic figés.

Ce module vérifie que les modèles marqués comme figés (frozen=True) ne peuvent pas
être modifiés après construction, et que leurs collections sont bien des tuples.
"""

from __future__ import annotations

from datetime import date, datetime
from typing import Any

import pytest
from pydantic import BaseModel, ValidationError

from pronote_sync.models.agenda import HomeworkBlock, Lesson, LessonStatus
from pronote_sync.models.blog import BlogArticle, ExternalInfo
from pronote_sync.models.diff import AgendaChange, AgendaChangeType
from pronote_sync.models.homework import Homework
from pronote_sync.models.message import Message, MessageType
from pronote_sync.models.pronote import PronoteData
from pronote_sync.models.sync import CalDAVSyncResult, CalDAVSyncStatus
from pronote_sync.models.xmpp import XmppMessage


@pytest.mark.parametrize(
    "model_class, kwargs",
    [
        (
            Lesson,
            {
                "id": "lesson-immutability",
                "start": datetime(2024, 9, 6, 8, 0, 0),
                "end": datetime(2024, 9, 6, 9, 30, 0),
                "subject": "Mathématiques",
                "teachers": ("M. Dupont", "Mme Martin"),
                "rooms": ("Salle 101",),
                "status": LessonStatus.NORMAL,
            },
        ),
        (
            Homework,
            {
                "id": "hw-immutability",
                "subject": "Physique",
                "teachers": ("M. Martin",),
                "due_on": date(2024, 9, 15),
                "text": "Exercice à rendre",
            },
        ),
        (
            AgendaChange,
            {
                "type": AgendaChangeType.ADDED,
                "lesson": Lesson(
                    id="lesson-ref",
                    start=datetime(2024, 9, 6, 10, 0, 0),
                    end=datetime(2024, 9, 6, 11, 30, 0),
                    subject="Histoire",
                    teachers=("Mme Bernard",),
                    rooms=("Salle 201",),
                    group=None,
                    content=None,
                ),
            },
        ),
        (
            XmppMessage,
            {
                "target_date": date(2024, 9, 6),
                "synthesis": "Test immuabilité",
            },
        ),
        (
            HomeworkBlock,
            {
                "kind": "due",
                "date": date(2024, 9, 15),
                "text": "Devoir à faire",
            },
        ),
        (
            ExternalInfo,
            {
                "blog_articles": (
                    BlogArticle(
                        id="article-1",
                        title="Article 1",
                        url="https://example.com/1",
                        published_at=datetime(2024, 9, 1, 8, 0, 0),
                        updated_at=None,
                        category=None,
                        author=None,
                        content_html="<p>Contenu</p>",
                        content_text="Contenu",
                    ),
                ),
                "pronote_messages": (
                    Message(
                        id="msg-1",
                        type=MessageType.INFORMATION,
                        title="Message 1",
                        content="Message",
                        author="Auteur",
                        date=datetime(2024, 9, 1, 8, 0, 0),
                        read=False,
                    ),
                ),
            },
        ),
    ],
)
def test_frozen_model_rejects_field_assignment(
    model_class: type[BaseModel], kwargs: dict[str, Any]
) -> None:
    """Vérifie qu'un modèle figé rejette toute tentative d'assignation de champ.

    :param model_class: Classe du modèle figé.
    :type model_class: type[BaseModel]
    :param kwargs: Arguments de constructeur valides.
    :type kwargs: dict[str, Any]
    """
    instance: Any = model_class(**kwargs)

    # Tentative d'assignation directe sur un champ
    with pytest.raises(ValidationError) as exc_info:
        if model_class == Lesson:
            instance.subject = "Nouveau sujet"
        elif model_class == Homework:
            instance.subject = "Nouveau sujet"
        elif model_class == AgendaChange:
            instance.details = "Nouveaux détails"
        elif model_class == XmppMessage:
            instance.synthesis = "Nouvelle synthèse"
        elif model_class == HomeworkBlock:
            instance.text = "Nouveau texte"
        elif model_class == ExternalInfo:
            instance.other_info = ("Nouvelle info",)

    error_msg = str(exc_info.value).lower()
    assert "instance is frozen" in error_msg or "immutable" in error_msg


@pytest.mark.parametrize(
    "model_class, kwargs, field_name, expected_type",
    [
        (
            Lesson,
            {
                "id": "lesson-tuple",
                "start": datetime(2024, 9, 6, 8, 0),
                "end": datetime(2024, 9, 6, 9, 0),
                "subject": "Test",
            },
            "teachers",
            tuple,
        ),
        (
            Lesson,
            {
                "id": "lesson-tuple2",
                "start": datetime(2024, 9, 6, 8, 0),
                "end": datetime(2024, 9, 6, 9, 0),
                "subject": "Test",
            },
            "rooms",
            tuple,
        ),
        (
            Lesson,
            {
                "id": "lesson-tuple3",
                "start": datetime(2024, 9, 6, 8, 0),
                "end": datetime(2024, 9, 6, 9, 0),
                "subject": "Test",
                "homework_blocks": (),
            },
            "homework_blocks",
            tuple,
        ),
        (
            Homework,
            {
                "id": "hw-tuple",
                "subject": "Test",
                "teachers": ("Prof 1",),
                "due_on": date(2024, 9, 15),
                "text": "Devoir",
            },
            "teachers",
            tuple,
        ),
        (
            AgendaChange,
            {
                "type": AgendaChangeType.ADDED,
                "lesson": Lesson(
                    id="ref",
                    start=datetime(2024, 9, 6, 8, 0),
                    end=datetime(2024, 9, 6, 9, 0),
                    subject="Test",
                    group=None,
                    content=None,
                ),
            },
            "details",
            str,
        ),
        (XmppMessage, {"target_date": date(2024, 9, 6)}, "homeworks", tuple),
        (XmppMessage, {"target_date": date(2024, 9, 6)}, "changes", tuple),
        (XmppMessage, {"target_date": date(2024, 9, 6)}, "messages", tuple),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "blog_articles",
            tuple,
        ),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "pronote_messages",
            tuple,
        ),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "other_info",
            tuple,
        ),
    ],
)
def test_collection_fields_are_tuples(
    model_class: type[BaseModel],
    kwargs: dict[str, Any],
    field_name: str,
    expected_type: type[Any],
) -> None:
    """Vérifie que les champs de collection sont bien des tuples et non des listes.

    :param model_class: Classe du modèle.
    :type model_class: type[BaseModel]
    :param kwargs: Arguments de constructeur valides.
    :type kwargs: dict[str, Any]
    :param field_name: Nom du champ de collection à vérifier.
    :type field_name: str
    :param expected_type: Type attendu (tuple).
    :type expected_type: type
    """
    instance = model_class(**kwargs)
    field_value = getattr(instance, field_name)
    assert isinstance(field_value, expected_type), (
        f"Le champ {field_name} devrait être de type {expected_type.__name__}, "
        f"got {type(field_value).__name__}"
    )


@pytest.mark.parametrize(
    "model_class, kwargs, field_name",
    [
        (
            Lesson,
            {
                "id": "lesson-no-append",
                "start": datetime(2024, 9, 6, 8, 0),
                "end": datetime(2024, 9, 6, 9, 0),
                "subject": "Test",
            },
            "teachers",
        ),
        (
            Lesson,
            {
                "id": "lesson-no-append2",
                "start": datetime(2024, 9, 6, 8, 0),
                "end": datetime(2024, 9, 6, 9, 0),
                "subject": "Test",
            },
            "rooms",
        ),
        (
            Homework,
            {
                "id": "hw-no-append",
                "subject": "Test",
                "teachers": ("Prof 1",),
                "due_on": date(2024, 9, 15),
                "text": "Devoir",
            },
            "teachers",
        ),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "blog_articles",
        ),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "pronote_messages",
        ),
        (
            ExternalInfo,
            {"blog_articles": (), "pronote_messages": (), "other_info": ()},
            "other_info",
        ),
    ],
)
def test_collection_fields_reject_append(
    model_class: type[BaseModel], kwargs: dict[str, Any], field_name: str
) -> None:
    """Vérifie que les champs de collection (tuples) rejettent la méthode append.

    :param model_class: Classe du modèle.
    :type model_class: type[BaseModel]
    :param kwargs: Arguments de constructeur valides.
    :type kwargs: dict[str, Any]
    :param field_name: Nom du champ de collection.
    :type field_name: str
    """
    instance = model_class(**kwargs)

    with pytest.raises(AttributeError) as exc_info:
        collection = getattr(instance, field_name)
        collection.append("new_item")

    assert "'tuple' object has no attribute 'append'" in str(exc_info.value)


@pytest.mark.parametrize(
    "model_class, kwargs, field_name, new_value",
    [
        (CalDAVSyncResult, {"status": CalDAVSyncStatus.SUCCESS}, "added", 5),
        (CalDAVSyncResult, {"status": CalDAVSyncStatus.SUCCESS}, "updated", 3),
        (CalDAVSyncResult, {"status": CalDAVSyncStatus.SUCCESS}, "removed", 2),
        (
            CalDAVSyncResult,
            {"status": CalDAVSyncStatus.FAILED},
            "errors",
            ["Erreur 1", "Erreur 2"],
        ),
    ],
)
def test_mutable_models_accept_field_assignment(
    model_class: type[BaseModel],
    kwargs: dict[str, Any],
    field_name: str,
    new_value: Any,
) -> None:
    """Vérifie que les modèles mutables (non figés) acceptent l'assignation de champs.

    :param model_class: Classe du modèle mutable.
    :type model_class: type[BaseModel]
    :param kwargs: Arguments de constructeur valides.
    :type kwargs: dict[str, Any]
    :param field_name: Nom du champ à assigner.
    :type field_name: str
    :param new_value: Nouvelle valeur à assigner.
    :type new_value: Any
    """
    instance = model_class(**kwargs)

    # Assignation du champ
    setattr(instance, field_name, new_value)

    # Vérification que la valeur a bien été assignée
    assert getattr(instance, field_name) == new_value, (
        f"Le champ {field_name} n'a pas été correctement assigné"
    )


@pytest.mark.parametrize(
    "model_class, kwargs",
    [
        (
            PronoteData,
            {
                "target_date": date(2024, 9, 6),
                "generated_at": datetime(2024, 9, 6, 8, 0, 0),
            },
        ),
        (CalDAVSyncResult, {"status": CalDAVSyncStatus.SUCCESS}),
    ],
)
def test_mutable_models_reject_frozen_assignment(
    model_class: type[BaseModel], kwargs: dict[str, Any]
) -> None:
    """Vérifie que les modèles mutables peuvent être modifiés mais pas rendus figés.

    Note: Les modèles mutables comme PronoteData et CalDAVSyncResult n'ont pas
    ConfigDict(frozen=True), donc ils peuvent être modifiés.

    :param model_class: Classe du modèle mutable.
    :type model_class: type[BaseModel]
    :param kwargs: Arguments de constructeur valides.
    :type kwargs: dict[str, Any]
    """
    from pronote_sync.models.pronote import PronoteData

    instance: Any = model_class(**kwargs)

    # Assignation normale doit fonctionner
    if model_class == PronoteData:
        instance.lessons.append("dummy")
    else:
        instance.added = 10

    # Vérification que l'instance n'est pas figée
    assert not hasattr(instance.model_config, "frozen") or not instance.model_config.get(
        "frozen", False
    )