"""Unit tests for SmartPlugManager service.

These tests specifically target the auto-off behavior and toggle functionality
that were identified as common regression points.
"""

import asyncio
from datetime import datetime, timezone
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from backend.app.services.smart_plug_manager import SmartPlugManager


class TestSmartPlugManager:
    """Tests for SmartPlugManager class."""

    @pytest.fixture
    def manager(self):
        """Create a fresh SmartPlugManager instance."""
        return SmartPlugManager()

    @pytest.fixture
    def mock_plug(self):
        """Create a mock SmartPlug object."""
        plug = MagicMock()
        plug.id = 1
        plug.name = "Test Plug"
        plug.ip_address = "192.168.1.100"
        plug.username = None
        plug.password = None
        plug.enabled = True
        plug.auto_on = True
        plug.auto_off = True
        plug.off_delay_mode = "time"
        plug.off_delay_minutes = 5
        plug.off_temp_threshold = 70
        plug.printer_id = 1
        plug.auto_off_executed = False
        plug.auto_off_pending = False
        plug.last_state = "ON"
        plug.last_checked = None
        # #1349: drying defaults match the new schema — both off until the
        # user opts in, so existing tests don't accidentally activate the
        # post-drying path.
        plug.plug_type = "tasmota"
        plug.ha_entity_id = None
        plug.auto_off_after_drying = False
        plug.off_delay_after_drying_minutes = 10
        return plug

    @pytest.fixture
    def mock_db(self):
        """Create a mock database session."""
        db = AsyncMock()
        db.commit = AsyncMock()
        db.refresh = AsyncMock()
        return db

    # ========================================================================
    # Tests for on_print_start
    # ========================================================================

    @pytest.mark.asyncio
    async def test_on_print_start_turns_on_plug(self, manager, mock_plug, mock_db):
        """Verify plug is turned ON when print starts with auto_on enabled."""
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = [mock_plug]
            mock_tasmota.turn_on = AsyncMock(return_value=True)

            await manager.on_print_start(printer_id=1, db=mock_db)

            mock_tasmota.turn_on.assert_called_once_with(mock_plug)

    @pytest.mark.asyncio
    async def test_on_print_start_skipped_when_auto_on_disabled(self, manager, mock_plug, mock_db):
        """Verify plug is NOT turned on when auto_on is disabled."""
        mock_plug.auto_on = False

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = [mock_plug]
            mock_tasmota.turn_on = AsyncMock()

            await manager.on_print_start(printer_id=1, db=mock_db)

            mock_tasmota.turn_on.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_start_skipped_when_plug_disabled(self, manager, mock_plug, mock_db):
        """Verify plug is NOT turned on when plug.enabled is False."""
        mock_plug.enabled = False

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = [mock_plug]
            mock_tasmota.turn_on = AsyncMock()

            await manager.on_print_start(printer_id=1, db=mock_db)

            mock_tasmota.turn_on.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_start_skipped_when_no_plug_found(self, manager, mock_db):
        """Verify graceful handling when no plug is linked to printer."""
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = []
            mock_tasmota.turn_on = AsyncMock()

            # Should not raise any exception
            await manager.on_print_start(printer_id=999, db=mock_db)

            mock_tasmota.turn_on.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_start_cancels_pending_off(self, manager, mock_plug, mock_db):
        """Verify starting a new print cancels any pending auto-off."""
        # Set up a pending task
        mock_task = MagicMock()
        manager._pending_off[mock_plug.id] = mock_task

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_mark_auto_off_pending", new_callable=AsyncMock),
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = [mock_plug]
            mock_tasmota.turn_on = AsyncMock(return_value=True)

            await manager.on_print_start(printer_id=1, db=mock_db)

            mock_task.cancel.assert_called_once()
            assert mock_plug.id not in manager._pending_off

    @pytest.mark.asyncio
    async def test_on_print_start_resets_auto_off_executed_flag(self, manager, mock_plug, mock_db):
        """Verify auto_off_executed flag is reset when turning on."""
        mock_plug.auto_off_executed = True

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_get_plug.return_value = [mock_plug]
            mock_tasmota.turn_on = AsyncMock(return_value=True)

            await manager.on_print_start(printer_id=1, db=mock_db)

            assert mock_plug.auto_off_executed is False

    # ========================================================================
    # Tests for on_print_complete
    # ========================================================================

    @pytest.mark.asyncio
    async def test_on_print_complete_schedules_time_based_off(self, manager, mock_plug, mock_db):
        """Verify time-based auto-off is scheduled when print completes."""
        mock_plug.off_delay_mode = "time"
        mock_plug.off_delay_minutes = 5

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="completed", db=mock_db)

            mock_schedule.assert_called_once_with(mock_plug, 1, 300)  # 5 min * 60 sec

    @pytest.mark.asyncio
    async def test_on_print_complete_schedules_temp_based_off(self, manager, mock_plug, mock_db):
        """Verify temperature-based auto-off is scheduled when print completes."""
        mock_plug.off_delay_mode = "temperature"
        mock_plug.off_temp_threshold = 70

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_temp_based_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="completed", db=mock_db)

            mock_schedule.assert_called_once_with(mock_plug, 1, 70)

    @pytest.mark.asyncio
    async def test_on_print_complete_skipped_when_auto_off_disabled(self, manager, mock_plug, mock_db):
        """CRITICAL: Verify auto-off does NOT trigger when auto_off is False.

        This is a key regression test - the toggle must respect the setting.
        """
        mock_plug.auto_off = False

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
            patch.object(manager, "_schedule_temp_based_off") as mock_temp,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="completed", db=mock_db)

            mock_schedule.assert_not_called()
            mock_temp.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_complete_skipped_when_plug_disabled(self, manager, mock_plug, mock_db):
        """Verify auto-off does NOT trigger when plug is disabled."""
        mock_plug.enabled = False

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="completed", db=mock_db)

            mock_schedule.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_complete_skipped_on_failed_print(self, manager, mock_plug, mock_db):
        """Verify auto-off does NOT trigger on failed prints for investigation."""
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="failed", db=mock_db)

            mock_schedule.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_print_complete_skipped_on_aborted_print(self, manager, mock_plug, mock_db):
        """Verify auto-off does NOT trigger on aborted prints."""
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="aborted", db=mock_db)

            mock_schedule.assert_not_called()

    # ========================================================================
    # Tests for on_drying_complete (#1349)
    # ========================================================================

    @pytest.mark.asyncio
    async def test_on_drying_complete_schedules_delayed_off_when_enabled(self, manager, mock_plug, mock_db):
        """Plug with ``auto_off_after_drying=True`` gets a delayed-off scheduled
        using its drying-specific delay (independent of print-finish delay)."""
        mock_plug.auto_off_after_drying = True
        mock_plug.off_delay_after_drying_minutes = 15

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_drying_complete(printer_id=1, db=mock_db)

            mock_schedule.assert_called_once_with(mock_plug, 1, 15 * 60)

    @pytest.mark.asyncio
    async def test_on_drying_complete_skipped_when_toggle_off(self, manager, mock_plug, mock_db):
        """Default state — toggle off → nothing scheduled. This is the regression
        guard for users who only enable the print-finish auto-off and don't
        want the AMS-drying path silently running on the same plug."""
        mock_plug.auto_off_after_drying = False
        # auto_off itself is True (existing print-finish behaviour) — the
        # drying path must still be a no-op without its own toggle.
        mock_plug.auto_off = True

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_drying_complete(printer_id=1, db=mock_db)

            mock_schedule.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_drying_complete_skipped_when_plug_disabled(self, manager, mock_plug, mock_db):
        """Drying auto-off honours the master ``enabled`` flag."""
        mock_plug.auto_off_after_drying = True
        mock_plug.enabled = False

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_drying_complete(printer_id=1, db=mock_db)

            mock_schedule.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_drying_complete_skipped_for_ha_script_entity(self, manager, mock_plug, mock_db):
        """HA script entities can be triggered but not turned off — same
        guard the print-finish path has."""
        mock_plug.auto_off_after_drying = True
        mock_plug.plug_type = "homeassistant"
        mock_plug.ha_entity_id = "script.lights_off"

        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = [mock_plug]

            await manager.on_drying_complete(printer_id=1, db=mock_db)

            mock_schedule.assert_not_called()

    @pytest.mark.asyncio
    async def test_on_drying_complete_no_op_when_no_plugs(self, manager, mock_db):
        """Printer without any linked plugs is a silent no-op (not an error)."""
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get_plug,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get_plug.return_value = []

            await manager.on_drying_complete(printer_id=1, db=mock_db)

            mock_schedule.assert_not_called()

    # ========================================================================
    # Tests for _cancel_pending_off
    # ========================================================================

    @pytest.mark.asyncio
    async def test_cancel_pending_off_removes_task(self, manager, mock_plug):
        """Verify pending off tasks can be cancelled."""
        mock_task = MagicMock()
        manager._pending_off[mock_plug.id] = mock_task

        with patch.object(manager, "_mark_auto_off_pending", new_callable=AsyncMock):
            manager._cancel_pending_off(mock_plug.id)

        assert mock_plug.id not in manager._pending_off
        mock_task.cancel.assert_called_once()

    @pytest.mark.asyncio
    async def test_cancel_pending_off_handles_missing_task(self, manager):
        """Verify no error when cancelling non-existent task."""
        # Should not raise any exception
        with patch.object(manager, "_mark_auto_off_pending", new_callable=AsyncMock):
            manager._cancel_pending_off(999)  # Non-existent plug ID

    @pytest.mark.asyncio
    async def test_cancel_all_pending(self, manager, mock_plug):
        """Verify all pending tasks can be cancelled."""
        mock_task1 = MagicMock()
        mock_task2 = MagicMock()
        manager._pending_off[1] = mock_task1
        manager._pending_off[2] = mock_task2

        with patch("asyncio.create_task"):
            manager.cancel_all_pending()

        assert len(manager._pending_off) == 0
        mock_task1.cancel.assert_called_once()
        mock_task2.cancel.assert_called_once()

    # ========================================================================
    # Tests for scheduler
    # ========================================================================

    def test_start_scheduler(self, manager):
        """Verify scheduler can be started."""
        assert manager._scheduler_task is None

        # Mock _schedule_loop to return a mock coroutine to avoid unawaited coroutine warning
        with patch.object(manager, "_schedule_loop") as mock_loop, patch("asyncio.create_task") as mock_create:
            mock_create.return_value = MagicMock()
            manager.start_scheduler()

            assert manager._scheduler_task is not None
            mock_loop.assert_called_once()

    def test_stop_scheduler(self, manager):
        """Verify scheduler can be stopped."""
        mock_task = MagicMock()
        manager._scheduler_task = mock_task

        manager.stop_scheduler()

        mock_task.cancel.assert_called_once()
        assert manager._scheduler_task is None

    def test_start_scheduler_idempotent(self, manager):
        """Verify starting scheduler twice doesn't create multiple tasks."""
        mock_schedule_task = MagicMock()
        mock_snapshot_task = MagicMock()
        manager._scheduler_task = mock_schedule_task
        manager._snapshot_task = mock_snapshot_task

        # Mock the loop coroutines to avoid unawaited coroutine warnings
        with (
            patch.object(manager, "_schedule_loop") as mock_loop,
            patch.object(manager, "_snapshot_loop") as mock_snapshot,
            patch("asyncio.create_task") as mock_create,
        ):
            manager.start_scheduler()

            mock_create.assert_not_called()  # Should not create new tasks
            mock_loop.assert_not_called()
            mock_snapshot.assert_not_called()

    def test_stop_scheduler_cancels_snapshot_task(self, manager):
        """Verify stopping scheduler also cancels the snapshot loop (#941)."""
        mock_schedule_task = MagicMock()
        mock_snapshot_task = MagicMock()
        manager._scheduler_task = mock_schedule_task
        manager._snapshot_task = mock_snapshot_task

        manager.stop_scheduler()

        mock_schedule_task.cancel.assert_called_once()
        mock_snapshot_task.cancel.assert_called_once()
        assert manager._scheduler_task is None
        assert manager._snapshot_task is None


class TestGetPlugsForPrinter:
    """Tests for _get_plugs_for_printer — returns all plugs for a printer (#903)."""

    @pytest.fixture
    def manager(self):
        return SmartPlugManager()

    @pytest.mark.asyncio
    async def test_returns_empty_list_when_no_plugs(self, manager):
        """Verify empty list is returned when no plugs are linked to printer."""
        mock_db = AsyncMock()
        mock_result = MagicMock()
        mock_result.scalars.return_value.all.return_value = []
        mock_db.execute = AsyncMock(return_value=mock_result)

        result = await manager._get_plugs_for_printer(1, mock_db)
        assert result == []

    @pytest.mark.asyncio
    async def test_returns_single_plug_as_list(self, manager):
        """Verify single plug is returned in a list."""
        plug = MagicMock()
        plug.plug_type = "tasmota"

        mock_db = AsyncMock()
        mock_result = MagicMock()
        mock_result.scalars.return_value.all.return_value = [plug]
        mock_db.execute = AsyncMock(return_value=mock_result)

        result = await manager._get_plugs_for_printer(1, mock_db)
        assert result == [plug]

    @pytest.mark.asyncio
    async def test_returns_all_plugs(self, manager):
        """Verify all plugs are returned when multiple exist (#903)."""
        plug1 = MagicMock()
        plug1.plug_type = "homeassistant"
        plug1.ha_entity_id = "switch.printer"

        plug2 = MagicMock()
        plug2.plug_type = "homeassistant"
        plug2.ha_entity_id = "switch.filter"

        mock_db = AsyncMock()
        mock_result = MagicMock()
        mock_result.scalars.return_value.all.return_value = [plug1, plug2]
        mock_db.execute = AsyncMock(return_value=mock_result)

        result = await manager._get_plugs_for_printer(1, mock_db)
        assert result == [plug1, plug2]


class TestAutoOffPersistent:
    """Tests for persistent auto-off behavior (Issue #826).

    When auto_off_persistent is True, auto_off should remain enabled after
    execution instead of being disabled (one-shot default).
    """

    @pytest.fixture
    def manager(self):
        return SmartPlugManager()

    @pytest.mark.asyncio
    async def test_mark_auto_off_executed_one_shot_disables_auto_off(self, manager):
        """Default one-shot: auto_off should be set to False after execution."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.auto_off = True
        mock_plug.auto_off_persistent = False
        mock_plug.auto_off_executed = False
        mock_plug.auto_off_pending = True
        mock_plug.auto_off_pending_since = datetime.now(timezone.utc)

        with patch("backend.app.core.database.async_session") as mock_session_ctx:
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalar_one_or_none.return_value = mock_plug
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_db.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            await manager._mark_auto_off_executed(1)

            assert mock_plug.auto_off is False, "One-shot: auto_off should be disabled"
            assert mock_plug.auto_off_pending is False
            assert mock_plug.auto_off_pending_since is None
            mock_db.commit.assert_called_once()

    @pytest.mark.asyncio
    async def test_mark_auto_off_executed_persistent_keeps_auto_off_enabled(self, manager):
        """Persistent mode: auto_off should remain True after execution."""
        mock_plug = MagicMock()
        mock_plug.id = 2
        mock_plug.auto_off = True
        mock_plug.auto_off_persistent = True
        mock_plug.auto_off_executed = False
        mock_plug.auto_off_pending = True
        mock_plug.auto_off_pending_since = datetime.now(timezone.utc)

        with patch("backend.app.core.database.async_session") as mock_session_ctx:
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalar_one_or_none.return_value = mock_plug
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_db.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            await manager._mark_auto_off_executed(2)

            assert mock_plug.auto_off is True, "Persistent: auto_off should stay enabled"
            assert mock_plug.auto_off_pending is False
            assert mock_plug.auto_off_pending_since is None
            mock_db.commit.assert_called_once()

    @pytest.mark.asyncio
    async def test_persistent_auto_off_full_cycle(self, manager):
        """Verify persistent auto-off survives a full print cycle.

        Simulates: print start → print complete → auto-off executes → next print start.
        auto_off should remain True throughout for persistent plugs.
        """
        mock_plug = MagicMock()
        mock_plug.id = 3
        mock_plug.name = "HA BentoBox Filter"
        mock_plug.plug_type = "homeassistant"
        mock_plug.ha_entity_id = "switch.bentobox_filter"
        mock_plug.ip_address = None
        mock_plug.username = None
        mock_plug.password = None
        mock_plug.enabled = True
        mock_plug.auto_on = True
        mock_plug.auto_off = True
        mock_plug.auto_off_persistent = True
        mock_plug.off_delay_mode = "time"
        mock_plug.off_delay_minutes = 1
        mock_plug.off_temp_threshold = 70
        mock_plug.printer_id = 1
        mock_plug.auto_off_executed = False
        mock_plug.auto_off_pending = False
        mock_plug.last_state = "OFF"
        mock_plug.last_checked = None

        mock_db = AsyncMock()
        mock_db.commit = AsyncMock()

        # Step 1: Print starts — plug turns on
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get,
            patch.object(manager, "get_service_for_plug", new_callable=AsyncMock) as mock_svc,
        ):
            mock_get.return_value = [mock_plug]
            mock_service = AsyncMock()
            mock_service.turn_on = AsyncMock(return_value=True)
            mock_svc.return_value = mock_service

            await manager.on_print_start(printer_id=1, db=mock_db)

            assert mock_plug.auto_off_executed is False
            assert mock_plug.auto_off is True  # Still enabled

        # Step 2: Print completes — auto-off is scheduled
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock) as mock_get,
            patch.object(manager, "_schedule_delayed_off") as mock_schedule,
        ):
            mock_get.return_value = [mock_plug]

            await manager.on_print_complete(printer_id=1, status="completed", db=mock_db)

            mock_schedule.assert_called_once()
            assert mock_plug.auto_off is True  # Still enabled after scheduling

        # Step 3: Auto-off executes via _mark_auto_off_executed
        with patch("backend.app.core.database.async_session") as mock_session_ctx:
            mock_db2 = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalar_one_or_none.return_value = mock_plug
            mock_db2.execute = AsyncMock(return_value=mock_result)
            mock_db2.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db2)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            await manager._mark_auto_off_executed(3)

            # KEY ASSERTION: auto_off stays True for persistent mode
            assert mock_plug.auto_off is True, "Persistent auto_off must survive execution"
            assert mock_plug.auto_off_pending is False


class TestScheduleLoop:
    """Tests for the schedule-based plug control."""

    @pytest.fixture
    def manager(self):
        return SmartPlugManager()

    @pytest.mark.asyncio
    async def test_check_schedules_turns_on_at_scheduled_time(self, manager):
        """Verify scheduled on-time turns plug on."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.name = "Test Plug"
        mock_plug.enabled = True
        mock_plug.schedule_enabled = True
        mock_plug.schedule_on_time = "08:00"
        mock_plug.schedule_off_time = "22:00"
        mock_plug.printer_id = None
        mock_plug.last_state = "OFF"

        with (
            patch("backend.app.services.smart_plug_manager.datetime") as mock_datetime,
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            # Set current time to 08:00
            mock_now = MagicMock()
            mock_now.strftime.return_value = "08:00"
            mock_datetime.now.return_value = mock_now
            mock_datetime.utcnow.return_value = datetime.now(timezone.utc)

            # Set up async session mock
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = [mock_plug]
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_db.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            mock_tasmota.turn_on = AsyncMock(return_value=True)

            await manager._check_schedules()

            mock_tasmota.turn_on.assert_called_once_with(mock_plug)

    @pytest.mark.asyncio
    async def test_check_schedules_turns_off_at_scheduled_time(self, manager):
        """Verify scheduled off-time turns plug off."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.name = "Test Plug"
        mock_plug.enabled = True
        mock_plug.schedule_enabled = True
        mock_plug.schedule_on_time = "08:00"
        mock_plug.schedule_off_time = "22:00"
        mock_plug.printer_id = 1
        mock_plug.last_state = "ON"

        with (
            patch("backend.app.services.smart_plug_manager.datetime") as mock_datetime,
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
        ):
            # Set current time to 22:00
            mock_now = MagicMock()
            mock_now.strftime.return_value = "22:00"
            mock_datetime.now.return_value = mock_now
            mock_datetime.utcnow.return_value = datetime.now(timezone.utc)

            # Set up async session mock
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = [mock_plug]
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_db.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            mock_tasmota.turn_off = AsyncMock(return_value=True)
            mock_pm.mark_printer_offline = MagicMock()

            await manager._check_schedules()

            mock_tasmota.turn_off.assert_called_once_with(mock_plug)

    @pytest.mark.asyncio
    async def test_check_schedules_skipped_when_disabled(self, manager):
        """Verify schedule is skipped when schedule_enabled is False."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.enabled = True
        mock_plug.schedule_enabled = False  # Disabled

        with (
            patch("backend.app.services.smart_plug_manager.datetime") as mock_datetime,
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_now = MagicMock()
            mock_now.strftime.return_value = "08:00"
            mock_datetime.now.return_value = mock_now

            # Set up async session mock - returns no plugs (filtered by schedule_enabled)
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = []
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_db.commit = AsyncMock()

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            mock_tasmota.turn_on = AsyncMock()

            await manager._check_schedules()

            mock_tasmota.turn_on.assert_not_called()


class TestPendingAutoOffPersistence:
    """Tests for auto-off pending state persistence (restart recovery)."""

    @pytest.fixture
    def manager(self):
        return SmartPlugManager()

    @pytest.mark.asyncio
    async def test_resume_pending_auto_offs_temperature_mode(self, manager):
        """Verify temperature-based pending auto-offs are resumed on startup."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.name = "Test Plug"
        mock_plug.ip_address = "192.168.1.100"
        mock_plug.username = None
        mock_plug.password = None
        mock_plug.printer_id = 1
        mock_plug.auto_off_pending = True
        mock_plug.auto_off_pending_since = datetime.now(timezone.utc)
        mock_plug.off_delay_mode = "temperature"
        mock_plug.off_temp_threshold = 70

        with (
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch.object(manager, "_schedule_temp_based_off") as mock_schedule,
        ):
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = [mock_plug]
            mock_db.execute = AsyncMock(return_value=mock_result)

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            await manager.resume_pending_auto_offs()

            mock_schedule.assert_called_once_with(mock_plug, 1, 70)

    @pytest.mark.asyncio
    async def test_resume_pending_auto_offs_time_mode_immediate_off(self, manager):
        """Verify time-based pending auto-offs turn off immediately on resume."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.name = "Test Plug"
        mock_plug.ip_address = "192.168.1.100"
        mock_plug.username = None
        mock_plug.password = None
        mock_plug.printer_id = 1
        mock_plug.auto_off_pending = True
        mock_plug.auto_off_pending_since = datetime.now(timezone.utc)
        mock_plug.off_delay_mode = "time"

        with (
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
            patch.object(manager, "_mark_auto_off_executed", new_callable=AsyncMock) as mock_mark,
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
        ):
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = [mock_plug]
            mock_db.execute = AsyncMock(return_value=mock_result)

            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            mock_tasmota.turn_off = AsyncMock(return_value=True)
            mock_pm.is_print_active.return_value = False  # printer idle on restart

            await manager.resume_pending_auto_offs()

            mock_tasmota.turn_off.assert_called_once()
            mock_mark.assert_called_once_with(1)

    @pytest.mark.asyncio
    async def test_resume_pending_auto_off_skipped_when_printing(self, manager):
        """#1890: on restart, a stale pending off must NOT power off a live print;
        the pending flag is cleared instead."""
        mock_plug = MagicMock()
        mock_plug.id = 1
        mock_plug.name = "Test Plug"
        mock_plug.printer_id = 1
        mock_plug.auto_off_pending = True
        mock_plug.auto_off_pending_since = datetime.now(timezone.utc)
        mock_plug.off_delay_mode = "time"

        with (
            patch("backend.app.core.database.async_session") as mock_session_ctx,
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
            patch.object(manager, "_schedule_temp_based_off") as mock_temp,
        ):
            mock_db = AsyncMock()
            mock_result = MagicMock()
            mock_result.scalars.return_value.all.return_value = [mock_plug]
            mock_db.execute = AsyncMock(return_value=mock_result)
            mock_session_ctx.return_value.__aenter__ = AsyncMock(return_value=mock_db)
            mock_session_ctx.return_value.__aexit__ = AsyncMock()

            mock_tasmota.turn_off = AsyncMock(return_value=True)
            mock_pm.is_print_active.return_value = True  # printer printing again on restart
            mock_pm.get_status.return_value = MagicMock(state="RUNNING")

            await manager.resume_pending_auto_offs()

            mock_tasmota.turn_off.assert_not_called()  # never cut power on the live print
            mock_temp.assert_not_called()
            assert mock_plug.auto_off_pending is False  # stale pending cleared


class TestActivePrintGuard:
    """#1890 — auto-off must never cut power while a print is loaded/running.

    Covers the two off-executors (`_delayed_off`, `_temp_based_off`), the new
    queue-override scheduler that honours per-plug settings, and the
    on_print_start cancellation gap.
    """

    @pytest.fixture
    def manager(self):
        return SmartPlugManager()

    @pytest.fixture
    def mock_plug(self):
        plug = MagicMock()
        plug.id = 1
        plug.name = "Test Plug"
        plug.ip_address = "192.168.1.100"
        plug.username = None
        plug.password = None
        plug.enabled = True
        plug.auto_on = True
        plug.auto_off = True
        plug.off_delay_mode = "time"
        plug.off_delay_minutes = 5
        plug.off_temp_threshold = 70
        plug.printer_id = 1
        plug.plug_type = "tasmota"
        plug.ha_entity_id = None
        return plug

    # ---- _delayed_off (time mode) ----------------------------------------

    @pytest.mark.asyncio
    async def test_delayed_off_skips_when_printer_printing_again(self, manager):
        """Time-delay fires after N min; if a reprint is running, skip the off."""
        with (
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
            patch.object(manager, "get_service_for_plug", new_callable=AsyncMock) as mock_get_svc,
            patch.object(manager, "_mark_auto_off_pending", new_callable=AsyncMock) as mock_mark_pending,
            patch.object(manager, "_mark_auto_off_executed", new_callable=AsyncMock) as mock_mark_exec,
        ):
            mock_pm.is_print_active.return_value = True
            mock_pm.get_status.return_value = MagicMock(state="RUNNING")

            await manager._delayed_off(1, "tasmota", "1.2.3.4", None, None, None, printer_id=1, delay_seconds=0)

            mock_get_svc.assert_not_called()  # never even resolved a service to turn off
            mock_mark_exec.assert_not_called()
            mock_mark_pending.assert_awaited_with(1, False)  # pending flag cleared

    @pytest.mark.asyncio
    async def test_delayed_off_powers_off_when_idle(self, manager):
        """When the printer is genuinely idle, the delayed off still fires."""
        mock_service = AsyncMock()
        mock_service.turn_off = AsyncMock(return_value=True)
        with (
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
            patch.object(manager, "get_service_for_plug", new_callable=AsyncMock, return_value=mock_service),
            patch.object(manager, "_mark_auto_off_executed", new_callable=AsyncMock),
        ):
            mock_pm.is_print_active.return_value = False

            await manager._delayed_off(1, "tasmota", "1.2.3.4", None, None, None, printer_id=1, delay_seconds=0)

            mock_service.turn_off.assert_awaited_once()
            mock_pm.mark_printer_offline.assert_called_once_with(1)

    # ---- _temp_based_off (temperature mode) ------------------------------

    @pytest.mark.asyncio
    async def test_temp_based_off_defers_while_printing_even_if_cool(self, manager):
        """Nozzle can dip below threshold during a reprint's PREPARE/heat phase;
        the guard must defer rather than cut power on the loaded print."""
        with (
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
            patch("backend.app.services.smart_plug_manager.asyncio.sleep", new_callable=AsyncMock) as mock_sleep,
            patch.object(manager, "get_service_for_plug", new_callable=AsyncMock) as mock_get_svc,
        ):
            # Cool enough to trip the threshold, but a print is active.
            mock_pm.get_status.return_value = MagicMock(state="PREPARE", temperatures={"nozzle": 30})
            mock_pm.is_print_active.return_value = True
            # Break the poll loop after the first deferral so the test terminates.
            mock_sleep.side_effect = asyncio.CancelledError()

            await manager._temp_based_off(1, "tasmota", "1.2.3.4", None, None, None, printer_id=1, temp_threshold=70)

            mock_get_svc.assert_not_called()  # never turned off despite temp < threshold

    @pytest.mark.asyncio
    async def test_temp_based_off_powers_off_when_cool_and_idle(self, manager):
        """Cool nozzle + idle printer → turn off using the plug's threshold."""
        mock_service = AsyncMock()
        mock_service.turn_off = AsyncMock(return_value=True)
        with (
            patch("backend.app.services.smart_plug_manager.printer_manager") as mock_pm,
            patch("backend.app.services.smart_plug_manager.asyncio.sleep", new_callable=AsyncMock),
            patch.object(manager, "get_service_for_plug", new_callable=AsyncMock, return_value=mock_service),
            patch.object(manager, "_mark_auto_off_executed", new_callable=AsyncMock),
        ):
            mock_pm.get_status.return_value = MagicMock(state="FINISH", temperatures={"nozzle": 40})
            mock_pm.is_print_active.return_value = False

            await manager._temp_based_off(1, "tasmota", "1.2.3.4", None, None, None, printer_id=1, temp_threshold=55)

            mock_service.turn_off.assert_awaited_once()

    # ---- schedule_off_after_queue_job (uses plug settings, not hardcoded 50/600)

    @pytest.mark.asyncio
    async def test_queue_off_uses_time_mode_regardless_of_global_auto_off(self, manager, mock_plug):
        """Queue 'auto off after this job' is a per-job override — it schedules
        even when the plug's global auto_off is disabled, and honours the plug's
        configured time-delay mode."""
        mock_plug.auto_off = False
        mock_plug.off_delay_mode = "time"
        mock_plug.off_delay_minutes = 8
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock, return_value=[mock_plug]),
            patch.object(manager, "_schedule_delayed_off") as mock_delayed,
            patch.object(manager, "_schedule_temp_based_off") as mock_temp,
        ):
            await manager.schedule_off_after_queue_job(printer_id=1, db=AsyncMock())

            mock_delayed.assert_called_once_with(mock_plug, 1, 8 * 60)  # plug's minutes, not hardcoded
            mock_temp.assert_not_called()

    @pytest.mark.asyncio
    async def test_queue_off_uses_configured_temp_threshold(self, manager, mock_plug):
        """Temperature mode passes the plug's off_temp_threshold, not a hardcoded 50."""
        mock_plug.off_delay_mode = "temperature"
        mock_plug.off_temp_threshold = 65
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock, return_value=[mock_plug]),
            patch.object(manager, "_schedule_delayed_off") as mock_delayed,
            patch.object(manager, "_schedule_temp_based_off") as mock_temp,
        ):
            await manager.schedule_off_after_queue_job(printer_id=1, db=AsyncMock())

            mock_temp.assert_called_once_with(mock_plug, 1, 65)
            mock_delayed.assert_not_called()

    @pytest.mark.asyncio
    async def test_queue_off_skips_disabled_and_ha_script_plugs(self, manager, mock_plug):
        """Disabled plugs and HA-script entities are never scheduled."""
        disabled = MagicMock(id=2, name="disabled", enabled=False, plug_type="tasmota", ha_entity_id=None)
        ha_script = MagicMock(
            id=3, name="ha", enabled=True, plug_type="homeassistant", ha_entity_id="script.printer_off"
        )
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock, return_value=[disabled, ha_script]),
            patch.object(manager, "_schedule_off_per_mode") as mock_sched,
        ):
            await manager.schedule_off_after_queue_job(printer_id=1, db=AsyncMock())

            mock_sched.assert_not_called()

    # ---- on_print_start cancellation gap ---------------------------------

    @pytest.mark.asyncio
    async def test_reprint_cancels_pending_off_even_when_auto_on_disabled(self, manager, mock_plug):
        """A reprint must abort a scheduled auto-off regardless of auto_on (#1890).

        Previously the cancel lived behind the auto_on gate, so a plug with
        auto_on disabled kept its pending off and cut power mid-reprint.
        """
        mock_plug.auto_on = False
        mock_task = MagicMock()
        manager._pending_off[mock_plug.id] = mock_task
        with (
            patch.object(manager, "_get_plugs_for_printer", new_callable=AsyncMock, return_value=[mock_plug]),
            patch.object(manager, "_mark_auto_off_pending", new_callable=AsyncMock),
            patch("backend.app.services.smart_plug_manager.tasmota_service") as mock_tasmota,
        ):
            mock_tasmota.turn_on = AsyncMock()

            await manager.on_print_start(printer_id=1, db=AsyncMock())

            mock_task.cancel.assert_called_once()  # cancelled despite auto_on=False
            assert mock_plug.id not in manager._pending_off
            mock_tasmota.turn_on.assert_not_called()  # but not powered on