"""Tests unitaires pour l'usine de construction du fournisseur d'agenda théorique.

Ce module contient les tests pour la fonction :func:`get_theoretical_provider`
du module :mod:`pronote_sync.sources.theoretical`.
"""

from __future__ import annotations

import json
from datetime import date
from pathlib import Path

import pytest

from pronote_sync.errors import PronoteSyncError
from pronote_sync.sources.theoretical import (
    TheoreticalAgendaProvider,
    get_theoretical_provider,
)


class TestGetTheoreticalProvider:
    """Tests pour la fonction get_theoretical_provider."""

    @pytest.fixture
    def fixture_path(self) -> Path:
        """Retourne le chemin du fichier de fixture theoretical.json."""
        return Path(__file__).parent.parent / "fixtures" / "theoretical.json"

    @pytest.fixture
    def holidays_path(self) -> Path:
        """Retourne le chemin du fichier de fixture school_holidays.json."""
        return Path(__file__).parent.parent / "fixtures" / "school_holidays.json"

    @pytest.fixture
    def all_only_path(self, tmp_path: Path) -> Path:
        """Crée un fichier JSON avec uniquement des cours "all"."""
        data = {
            "version": 1,
            "lessons": [
                {
                    "week": "all",
                    "day_of_week": 0,
                    "start_time": "08:00",
                    "end_time": "09:00",
                    "subject": "Test",
                }
            ],
        }
        file_path = tmp_path / "all_only.json"
        file_path.write_text(json.dumps(data), encoding="utf-8")
        return file_path

    def test_factory_returns_none_when_path_none(self) -> None:
        """Teste que l'usine retourne None quand agenda_path est None.

        :assert: get_theoretical_provider(None, None, None, None) retourne None.
        """
        result = get_theoretical_provider(None, None, None, None)
        assert result is None

    def test_factory_returns_provider_with_full_config(
        self, fixture_path: Path, holidays_path: Path
    ) -> None:
        """Teste que l'usine retourne un fournisseur avec une configuration complète.

        :assert: Un fournisseur est retourné avec tous les paramètres.
        """
        result = get_theoretical_provider(
            agenda_path=str(fixture_path),
            holidays_path=str(holidays_path),
            anchor_date=date(2026, 9, 1),
            anchor_type="even",
        )
        assert result is not None
        assert isinstance(result, TheoreticalAgendaProvider)

    def test_factory_partial_parity_config_error(self, fixture_path: Path) -> None:
        """Teste qu'une configuration de parité partielle lève une PronoteSyncError.

        :assert: PronoteSyncError est levée quand anchor_date est fourni sans anchor_type.
        """
        with pytest.raises(PronoteSyncError) as exc_info:
            get_theoretical_provider(
                agenda_path=str(fixture_path),
                holidays_path=None,
                anchor_date=date(2026, 9, 1),
                anchor_type=None,
            )
        assert "incomplète" in str(exc_info.value)

    def test_factory_partial_parity_config_error_type_only(self, fixture_path: Path) -> None:
        """Teste qu'une configuration de parité partielle (type seulement) lève une PronoteSyncError.

        :assert: PronoteSyncError est levée quand anchor_type est fourni sans anchor_date.
        """
        with pytest.raises(PronoteSyncError) as exc_info:
            get_theoretical_provider(
                agenda_path=str(fixture_path),
                holidays_path=None,
                anchor_date=None,
                anchor_type="even",
            )
        assert "incomplète" in str(exc_info.value)

    def test_factory_no_holidays(self, fixture_path: Path) -> None:
        """Teste que l'usine retourne un fournisseur sans calendrier de vacances.

        :assert: Un fournisseur est retourné sans calendrier de vacances.
        """
        result = get_theoretical_provider(
            agenda_path=str(fixture_path),
            holidays_path=None,
            anchor_date=date(2026, 9, 1),
            anchor_type="even",
        )
        assert result is not None
        assert isinstance(result, TheoreticalAgendaProvider)

    def test_factory_no_parity(self, all_only_path: Path) -> None:
        """Teste que l'usine retourne un fournisseur sans service de parité pour des cours "all".

        :assert: Un fournisseur est retourné sans service de parité.
        """
        result = get_theoretical_provider(
            agenda_path=str(all_only_path),
            holidays_path=None,
            anchor_date=None,
            anchor_type=None,
        )
        assert result is not None
        assert isinstance(result, TheoreticalAgendaProvider)

    def test_factory_protocol_compliance(self, fixture_path: Path, holidays_path: Path) -> None:
        """Teste que le fournisseur retourné respecte le protocole TheoreticalAgendaProvider.

        :assert: Le fournisseur satisfait isinstance(provider, TheoreticalAgendaProvider).
        """
        result = get_theoretical_provider(
            agenda_path=str(fixture_path),
            holidays_path=str(holidays_path),
            anchor_date=date(2026, 9, 1),
            anchor_type="even",
        )
        assert result is not None
        assert isinstance(result, TheoreticalAgendaProvider)