"""Tests für AbonnementRepository (#136, ADR 0008)."""
from __future__ import annotations

import asyncio

from app.repositories import (
    AbonnementRepository,
    InMemoryAbonnementRepository,
    SqliteAbonnementRepository,
)


def _run(coro):
    return asyncio.get_event_loop().run_until_complete(coro)


class TestProtocolConformance:
    def test_in_memory_implements_protocol(self):
        repo = InMemoryAbonnementRepository()
        assert isinstance(repo, AbonnementRepository)

    def test_sqlite_implements_protocol(self):
        repo = SqliteAbonnementRepository()
        assert isinstance(repo, AbonnementRepository)


class TestCreateAndList:
    def test_create_returns_id(self):
        repo = InMemoryAbonnementRepository()
        sid = _run(repo.create("u1", "a@b.de"))
        assert sid == 1

    def test_create_increments_id(self):
        repo = InMemoryAbonnementRepository()
        s1 = _run(repo.create("u1", "a@b.de"))
        s2 = _run(repo.create("u1", "c@d.de"))
        assert s2 == s1 + 1

    def test_list_by_user_filters(self):
        repo = InMemoryAbonnementRepository()
        _run(repo.create("u1", "a@b.de"))
        _run(repo.create("u2", "c@d.de"))
        rows = _run(repo.list_by_user("u1"))
        assert len(rows) == 1
        assert rows[0]["email"] == "a@b.de"

    def test_list_all_returns_every_sub(self):
        repo = InMemoryAbonnementRepository()
        _run(repo.create("u1", "a@b.de"))
        _run(repo.create("u2", "c@d.de"))
        assert len(_run(repo.list_all())) == 2


class TestListDue:
    def test_list_due_returns_unsent(self):
        repo = InMemoryAbonnementRepository()
        _run(repo.create("u1", "a@b.de"))
        due = _run(repo.list_due())
        assert len(due) == 1

    def test_mark_sent_removes_from_due(self):
        repo = InMemoryAbonnementRepository()
        sid = _run(repo.create("u1", "a@b.de"))
        _run(repo.mark_sent(sid))
        assert _run(repo.list_due()) == []

    def test_list_due_filters_by_frequency(self):
        repo = InMemoryAbonnementRepository()
        _run(repo.create("u1", "a@b.de", frequency="daily"))
        _run(repo.create("u2", "c@d.de", frequency="weekly"))
        daily = _run(repo.list_due("daily"))
        weekly = _run(repo.list_due("weekly"))
        assert len(daily) == 1 and daily[0]["email"] == "a@b.de"
        assert len(weekly) == 1 and weekly[0]["email"] == "c@d.de"


class TestDelete:
    def test_delete_checks_ownership(self):
        repo = InMemoryAbonnementRepository()
        sid = _run(repo.create("u1", "a@b.de"))
        # Fremder User kann nicht löschen
        assert _run(repo.delete("u2", sid)) is False
        # Eigentümer kann löschen
        assert _run(repo.delete("u1", sid)) is True

    def test_delete_by_id_skips_ownership_check(self):
        repo = InMemoryAbonnementRepository()
        sid = _run(repo.create("u1", "a@b.de"))
        # delete_by_id ist für Unsubscribe-Links (Token-gesichert), nicht für
        # den Self-Service; kein User-Check
        assert _run(repo.delete_by_id(sid)) is True

    def test_delete_by_id_missing_returns_false(self):
        repo = InMemoryAbonnementRepository()
        assert _run(repo.delete_by_id(999)) is False


# ─────────────────────────────────────────────────────────────────────────────
# SqliteAbonnementRepository — Delegation an database.* (#134 Coverage-Backfill)
# ─────────────────────────────────────────────────────────────────────────────


class TestSqliteAbonnementRepositoryDelegation:
    """Die Sqlite-Variante ist nur ein duenner Wrapper um Module-Funktionen
    in app.database. Test prueft dass jede Methode korrekt delegiert,
    ohne echte DB-Calls (Module-Funktionen werden gemockt)."""

    def test_create_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        repo = SqliteAbonnementRepository()
        with patch("app.repositories.abonnement_repository.database.create_subscription",
                   new=AsyncMock(return_value=42)) as m:
            result = _run(repo.create("u1", "a@b.de", "NRW", "CDU", "weekly"))
        assert result == 42
        m.assert_called_once_with("u1", "a@b.de", "NRW", "CDU", "weekly")

    def test_list_by_user_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        repo = SqliteAbonnementRepository()
        fake = [{"id": 1, "email": "x@y"}]
        with patch("app.repositories.abonnement_repository.database.list_subscriptions",
                   new=AsyncMock(return_value=fake)) as m:
            assert _run(repo.list_by_user("u1")) == fake
        m.assert_called_once_with("u1")

    def test_list_all_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        with patch("app.repositories.abonnement_repository.database.list_all_subscriptions",
                   new=AsyncMock(return_value=[])) as m:
            assert _run(SqliteAbonnementRepository().list_all()) == []
        m.assert_called_once_with()

    def test_list_due_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        with patch("app.repositories.abonnement_repository.database.get_all_subscriptions_due",
                   new=AsyncMock(return_value=[])) as m:
            _run(SqliteAbonnementRepository().list_due("weekly"))
        m.assert_called_once_with("weekly")

    def test_delete_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        with patch("app.repositories.abonnement_repository.database.delete_subscription",
                   new=AsyncMock(return_value=True)) as m:
            _run(SqliteAbonnementRepository().delete("u1", 5))
        m.assert_called_once_with("u1", 5)

    def test_delete_by_id_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        with patch("app.repositories.abonnement_repository.database.delete_subscription_by_id",
                   new=AsyncMock(return_value=False)) as m:
            _run(SqliteAbonnementRepository().delete_by_id(99))
        m.assert_called_once_with(99)

    def test_mark_sent_delegates(self):
        from unittest.mock import AsyncMock, patch
        from app.repositories.abonnement_repository import SqliteAbonnementRepository
        with patch("app.repositories.abonnement_repository.database.mark_subscription_sent",
                   new=AsyncMock(return_value=None)) as m:
            _run(SqliteAbonnementRepository().mark_sent(7))
        m.assert_called_once_with(7)


def test_get_abonnement_repository_returns_singleton():
    from app.repositories.abonnement_repository import get_abonnement_repository
    a = get_abonnement_repository()
    b = get_abonnement_repository()
    assert a is b