"""The object QML talks to, and the place the desktop integrations are wired up.

It holds the last known state from the server, ticks the countdown locally
between polls, and reacts to the *transitions* — a focus interval starting is
what inhibits the screensaver, silences notifications, pauses your music and
turns the blocker on; it ending is what gives all of that back.
"""

from __future__ import annotations

import logging
from typing import Any

from PyQt6.QtCore import (
    QObject,
    QThread,
    QTimer,
    QUrl,
    pyqtProperty,
    pyqtSignal,
    pyqtSlot,
)
from PyQt6.QtGui import QDesktopServices

from kadence_desktop.api import Api
from kadence_desktop.blocking.manager import BlockerManager
from kadence_desktop.config import DesktopConfig
from kadence_desktop.integrations import autostart, keep_above
from kadence_desktop.integrations.inhibit import DoNotDisturb, ScreensaverInhibitor
from kadence_desktop.integrations.launcher import LauncherEntry
from kadence_desktop.integrations.mpris import MediaController
from kadence_desktop.integrations.notifications import URGENCY_CRITICAL, Notifier
from kadence_desktop.integrations.session import SessionWatcher
from kadence_desktop.worker import ApiWorker

log = logging.getLogger(__name__)

KIND_LABELS = {"work": "Focus", "short_break": "Short break", "long_break": "Long break"}


def clock(seconds: int) -> str:
    seconds = max(0, int(seconds))
    return f"{seconds // 60:02d}:{seconds % 60:02d}"


class Controller(QObject):
    # ---- notifications to QML ---------------------------------------------
    stateChanged = pyqtSignal()
    tasksChanged = pyqtSignal()
    statsChanged = pyqtSignal()
    reportChanged = pyqtSignal()
    settingsChanged = pyqtSignal()
    blockerChanged = pyqtSignal()
    connectionChanged = pyqtSignal()
    configChanged = pyqtSignal()
    miniChanged = pyqtSignal()
    miniPlacementChanged = pyqtSignal()
    toast = pyqtSignal(str)
    showWindowRequested = pyqtSignal()

    def __init__(self, config: DesktopConfig, parent: QObject | None = None) -> None:
        super().__init__(parent)
        self._config = config
        self._api = Api(config.server_url, config.api_token)

        # ---- state mirrors --------------------------------------------------
        self._state: dict[str, Any] = {}
        self._policy: dict[str, Any] = {}
        self._tasks: list[dict[str, Any]] = []
        self._task_counts: dict[str, Any] = {}
        self._stats: dict[str, Any] = {}
        self._report: dict[str, Any] = {}
        self._settings: dict[str, Any] = {}
        self._connected = False
        self._connection_error = ""
        self._remaining = 0
        self._last_session_id: int | None = None
        self._last_kind = ""
        self._last_status = ""
        self._completing = False
        self._paused_by_lock = False
        self._mini_visible = False
        self._mini_dismissed = False
        """Set when the ✕ on the mini timer was clicked during a running interval.

        `app._update_mini()` would otherwise bring it straight back up through
        its "auto-show while running and the window is away" rule, making the
        close button look broken. Cleared on the next explicit show and on the
        next interval, so a dismissal only lasts for the one you closed it on.
        """

        # ---- system integrations -------------------------------------------
        self._notifier = Notifier()
        self._screensaver = ScreensaverInhibitor()
        self._dnd = DoNotDisturb()
        self._launcher = LauncherEntry()
        self._media = MediaController()
        self._session = SessionWatcher(self)
        self._session.locked.connect(self._on_session_locked)
        self._session.unlocked.connect(self._on_session_unlocked)
        self._session.sleeping.connect(self._on_session_locked)

        self._blocker = BlockerManager(
            helper_path=config.helper_path,
            report=self._report_block,
            notify=self._blocker_notice,
        )
        self._blocker.enforce_hosts = config.block_hosts_file
        self._blocker.enforce_apps = config.block_apps

        # ---- network thread -------------------------------------------------
        self._thread = QThread(self)
        self._worker = ApiWorker(self._api, config.poll_seconds)
        self._worker.moveToThread(self._thread)
        self._thread.started.connect(self._worker.start)
        self._worker.stateChanged.connect(self._on_state)
        self._worker.policyChanged.connect(self._on_policy)
        self._worker.tasksChanged.connect(self._on_tasks)
        self._worker.statsChanged.connect(self._on_stats)
        self._worker.reportChanged.connect(self._on_report)
        self._worker.settingsChanged.connect(self._on_settings)
        self._worker.connectionChanged.connect(self._on_connection)
        self._worker.commandFailed.connect(self._on_command_failed)
        self._worker.commandDone.connect(self._on_command_done)
        self._thread.start()

        # ---- local clock ----------------------------------------------------
        self._tick = QTimer(self)
        self._tick.setInterval(1000)
        self._tick.timeout.connect(self._on_tick)
        self._tick.start()

        # A Wayland compositor ignores "stay on top", so ask KWin properly.
        self.ensure_keep_above()

        self._idle_check = QTimer(self)
        self._idle_check.setInterval(30_000)
        self._idle_check.timeout.connect(self._check_idle)
        self._idle_check.start()

    # ======================================================================
    # Properties for QML
    # ======================================================================
    @pyqtProperty(bool, notify=connectionChanged)
    def connected(self) -> bool:
        return self._connected

    @pyqtProperty(str, notify=connectionChanged)
    def connectionError(self) -> str:
        return self._connection_error

    @pyqtProperty(bool, notify=stateChanged)
    def running(self) -> bool:
        return bool(self._state.get("current"))

    @pyqtProperty(str, notify=stateChanged)
    def kind(self) -> str:
        current = self._state.get("current")
        return str(current["kind"]) if current else str(self._state.get("next_kind", "work"))

    @pyqtProperty(str, notify=stateChanged)
    def kindLabel(self) -> str:
        return KIND_LABELS.get(self.kind, self.kind)

    @pyqtProperty(str, notify=stateChanged)
    def status(self) -> str:
        current = self._state.get("current")
        return str(current["status"]) if current else "idle"

    @pyqtProperty(int, notify=stateChanged)
    def remainingSeconds(self) -> int:
        if self._state.get("current"):
            return int(self._remaining)
        durations = self._state.get("durations") or {}
        return int(durations.get(self.kind, 25)) * 60

    @pyqtProperty(int, notify=stateChanged)
    def plannedSeconds(self) -> int:
        current = self._state.get("current")
        if current:
            return int(current["planned_seconds"])
        durations = self._state.get("durations") or {}
        return int(durations.get(self.kind, 25)) * 60

    @pyqtProperty(float, notify=stateChanged)
    def progress(self) -> float:
        planned = self.plannedSeconds
        if planned <= 0:
            return 0.0
        return max(0.0, min(1.0, 1 - self.remainingSeconds / planned))

    @pyqtProperty(str, notify=stateChanged)
    def clockText(self) -> str:
        return clock(self.remainingSeconds)

    @pyqtProperty(str, notify=stateChanged)
    def taskTitle(self) -> str:
        current = self._state.get("current") or {}
        task = current.get("task") or {}
        return str(task.get("title", ""))

    @pyqtProperty(int, notify=stateChanged)
    def taskId(self) -> int:
        for task in self._tasks:
            current = self._state.get("current") or {}
            attached = current.get("task") or {}
            if attached and task.get("external_id") == attached.get("external_id"):
                return int(task.get("id", -1))
        return -1

    @pyqtProperty(int, notify=stateChanged)
    def interruptions(self) -> int:
        current = self._state.get("current") or {}
        return int(current.get("interruptions", 0))

    @pyqtProperty(int, notify=stateChanged)
    def completedToday(self) -> int:
        return int(self._state.get("completed_today", 0))

    @pyqtProperty(int, notify=stateChanged)
    def goal(self) -> int:
        return int(self._state.get("goal", 8))

    @pyqtProperty(int, notify=stateChanged)
    def cyclePosition(self) -> int:
        return int(self._state.get("cycle_position", 1))

    @pyqtProperty(int, notify=stateChanged)
    def cycleLength(self) -> int:
        return int(self._state.get("cycles_before_long_break", 4))

    @pyqtProperty(str, notify=stateChanged)
    def nextKindLabel(self) -> str:
        return KIND_LABELS.get(str(self._state.get("next_kind", "work")), "Focus")

    @pyqtProperty(bool, notify=settingsChanged)
    def timerEnabled(self) -> bool:
        """When False the app is in view-only mode — no timer controls."""
        if self._config.view_only:
            return False
        pomodoro = self._settings.get("pomodoro", {})
        return bool(pomodoro.get("timer_enabled", True))

    @pyqtProperty("QVariantList", notify=tasksChanged)
    def tasks(self) -> list[dict[str, Any]]:
        return self._tasks

    @pyqtProperty("QVariantMap", notify=tasksChanged)
    def taskCounts(self) -> dict[str, Any]:
        return self._task_counts

    @pyqtProperty("QVariantMap", notify=statsChanged)
    def stats(self) -> dict[str, Any]:
        return self._stats

    @pyqtProperty("QVariantMap", notify=reportChanged)
    def report(self) -> dict[str, Any]:
        return self._report

    @pyqtProperty("QVariantMap", notify=settingsChanged)
    def settings(self) -> dict[str, Any]:
        return self._settings

    @pyqtProperty(int, notify=settingsChanged)
    def activePresetIndex(self) -> int:
        """Which saved preset the live Focus/Short/Long minutes match, or -1.

        One source of truth for SettingsPage (the full switcher, with the
        numbers editable below it) and TimerPage (a quick switcher next to
        the dial) so the two never compute "which preset is this" differently.
        """
        pomodoro = self._settings.get("pomodoro", {})
        for index, preset in enumerate(pomodoro.get("presets", [])):
            if (
                preset.get("work_minutes") == pomodoro.get("work_minutes")
                and preset.get("short_break_minutes") == pomodoro.get("short_break_minutes")
                and preset.get("long_break_minutes") == pomodoro.get("long_break_minutes")
            ):
                return index
        return -1

    @pyqtProperty(bool, notify=blockerChanged)
    def blockerActive(self) -> bool:
        return bool(self._policy.get("active"))

    @pyqtProperty(str, notify=blockerChanged)
    def blockerReason(self) -> str:
        return str(self._policy.get("reason", ""))

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def blockedDomains(self) -> list[str]:
        """Every hostname the policy wants blocked, server-expanded.

        This is the *intent*: what the rules add up to. What is actually in this
        machine's hosts file is [appliedDomains] — reporting this one as the
        state was the page lying about a machine it had not touched.
        """
        return [str(item) for item in self._policy.get("all_domains", [])]

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def appliedDomains(self) -> list[str]:
        """What is really inside the managed region of `/etc/hosts` right now."""
        return self._blocker.blocked_domains

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def routedZones(self) -> list[str]:
        """DNS zones currently pointed at this machine's local resolver stub."""
        return list(self._blocker.routed_zones)

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def unroutableDomains(self) -> list[str]:
        """Masks no machine can enforce: no DNS zone can be routed for them."""
        if not self._policy.get("active"):
            return []
        return list(self._blocker.unroutable)

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def blockedApps(self) -> list[str]:
        return [str(item) for item in self._policy.get("all_apps", [])]

    @pyqtProperty("QVariantList", notify=blockerChanged)
    def invalidExpansions(self) -> list[str]:
        """Subdomain expansions the server refused, e.g. `not a label`.

        Worth a banner rather than a log line: a mistyped label silently reduces
        every `*.site` mask to the bare domain, which looks like "blocking is on
        and does nothing".
        """
        return [str(item) for item in self._policy.get("invalid_expansions", [])]

    @pyqtProperty(bool, notify=blockerChanged)
    def helperInstalled(self) -> bool:
        return self._blocker.helper_installed

    @pyqtProperty(str, notify=blockerChanged)
    def blockerError(self) -> str:
        return self._blocker.error or ""

    @pyqtProperty(bool, notify=miniChanged)
    def miniVisible(self) -> bool:
        """Whether the floating mini timer is pinned open by the user."""
        return self._mini_visible

    @property
    def mini_dismissed(self) -> bool:
        """For `app._update_mini()`, not QML: see `_mini_dismissed` above."""
        return self._mini_dismissed

    @pyqtProperty("QVariantMap", notify=configChanged)
    def config(self) -> dict[str, Any]:
        from dataclasses import asdict

        data = asdict(self._config)
        data["autostart"] = autostart.autostart_enabled()
        data["service_enabled"] = autostart.service_enabled()
        data["keep_above_supported"] = keep_above.supported()
        data["keep_above_installed"] = keep_above.installed()
        return data

    # ======================================================================
    # Commands from QML (and from the tray, and from D-Bus)
    # ======================================================================
    def _send(self, name: str, args: dict[str, Any] | None = None) -> None:
        from PyQt6.QtCore import Q_ARG, QMetaObject, Qt

        QMetaObject.invokeMethod(
            self._worker,
            "command",
            Qt.ConnectionType.QueuedConnection,
            Q_ARG(str, name),
            Q_ARG(dict, args or {}),
        )

    @pyqtSlot()
    @pyqtSlot(int)
    def startWork(self, minutes: int = 0) -> None:
        if not self.timerEnabled:
            return
        args: dict[str, Any] = {"kind": "work"}
        if minutes:
            args["minutes"] = minutes
        current_task = self._state.get("current") or {}
        if not current_task.get("task"):
            pinned = next((task for task in self._tasks if task.get("pinned")), None)
            if pinned:
                args["task_id"] = pinned["id"]
        self._send("start", args)

    @pyqtSlot()
    def startBreak(self) -> None:
        if not self.timerEnabled:
            return
        kind = str(self._state.get("next_kind", "short_break"))
        self._send("start", {"kind": "long_break" if kind == "long_break" else "short_break"})

    @pyqtSlot()
    def toggle(self) -> None:
        """One verb for a global hotkey: start → pause → resume."""
        if not self.timerEnabled:
            return
        if not self.running:
            self.startWork()
        elif self.status == "paused":
            self.resume()
        else:
            self.pause()

    @pyqtSlot(bool)
    def setTimerEnabled(self, enabled: bool) -> None:
        """Toggle view-only mode on or off."""
        self._config.update(view_only=not enabled)
        self.configChanged.emit()
        self.settingsChanged.emit()
        self.patchSettings({"pomodoro": {"timer_enabled": enabled}})

    @pyqtSlot()
    def pause(self) -> None:
        self._send("pause")

    @pyqtSlot()
    def resume(self) -> None:
        self._send("resume")

    @pyqtSlot()
    def complete(self) -> None:
        self._send("complete", {"auto_next": True})

    @pyqtSlot()
    @pyqtSlot(str)
    def abandon(self, reason: str = "") -> None:
        self._send("abandon", {"reason": reason or None})

    @pyqtSlot()
    @pyqtSlot(int)
    def extend(self, minutes: int = 5) -> None:
        self._send("extend", {"minutes": minutes})

    @pyqtSlot()
    def interrupt(self) -> None:
        self._send("interrupt")

    @pyqtSlot(int)
    def attachTask(self, task_id: int) -> None:
        self._send("attach_task", {"task_id": task_id if task_id >= 0 else None})

    @pyqtSlot(int, bool)
    def setTaskPinned(self, task_id: int, pinned: bool) -> None:
        """Pinning is the only task edit this app makes — closing one is not."""
        self._send("patch_task", {"task_id": task_id, "patch": {"pinned": pinned}})

    @pyqtSlot(str, str)
    def createTask(self, title: str, due_date: str) -> None:
        self._send("create_task", {"title": title, "due_date": due_date or None})

    @pyqtSlot()
    def refreshSources(self) -> None:
        self.toast.emit("Pulling Jira, Todoist, Google Tasks…")
        self._send("refresh_sources")

    @pyqtSlot()
    def sendReport(self) -> None:
        self._send("send_report")

    @pyqtSlot()
    def loadReport(self) -> None:
        from PyQt6.QtCore import QMetaObject, Qt

        QMetaObject.invokeMethod(self._worker, "refresh_report", Qt.ConnectionType.QueuedConnection)

    @pyqtSlot()
    def loadSettings(self) -> None:
        from PyQt6.QtCore import QMetaObject, Qt

        QMetaObject.invokeMethod(self._worker, "refresh_settings", Qt.ConnectionType.QueuedConnection)

    @pyqtSlot("QVariantMap")
    def patchSettings(self, patch: dict[str, Any]) -> None:
        self._send("patch_settings", {"patch": patch})

    @pyqtSlot(int)
    def applyPreset(self, index: int) -> None:
        """Copy a saved preset's minutes onto the live timer settings.

        The backend resizes whatever interval is already running or paused
        to match, so this takes effect at once — not just on the next one.
        """
        presets = self._settings.get("pomodoro", {}).get("presets", [])
        if not (0 <= index < len(presets)):
            return
        preset = presets[index]
        self.patchSettings(
            {
                "pomodoro": {
                    "work_minutes": preset["work_minutes"],
                    "short_break_minutes": preset["short_break_minutes"],
                    "long_break_minutes": preset["long_break_minutes"],
                    "cycles_before_long_break": preset["cycles_before_long_break"],
                }
            }
        )

    @pyqtSlot(str, "QVariant")
    def setConfig(self, key: str, value: Any) -> None:
        """Change a desktop-local setting and apply it immediately."""
        if key == "autostart":
            autostart.set_autostart(bool(value), minimized=self._config.start_minimized)
        elif key == "service_enabled":
            if value:
                self.toast.emit(autostart.install_service(enable=True))
            else:
                autostart.remove_service()
                self.toast.emit("systemd user service removed")
        else:
            self._config.update(**{key: value})
            if key in ("server_url", "api_token"):
                from PyQt6.QtCore import Q_ARG, QMetaObject, Qt

                QMetaObject.invokeMethod(
                    self._worker,
                    "configure",
                    Qt.ConnectionType.QueuedConnection,
                    Q_ARG(str, self._config.server_url),
                    Q_ARG(str, self._config.api_token),
                )
            elif key == "poll_seconds":
                from PyQt6.QtCore import Q_ARG, QMetaObject, Qt

                QMetaObject.invokeMethod(
                    self._worker,
                    "set_interval",
                    Qt.ConnectionType.QueuedConnection,
                    Q_ARG(int, int(value)),
                )
            elif key == "block_hosts_file":
                self._blocker.enforce_hosts = bool(value)
            elif key == "block_apps":
                self._blocker.enforce_apps = bool(value)
            elif key == "mini_timer_keep_above":
                ok, message = keep_above.apply() if value else keep_above.remove()
                self.toast.emit(message)
                if not ok:
                    self._config.update(mini_timer_keep_above=not value)
            elif key in ("mini_timer_corner", "mini_timer_margin"):
                self.miniPlacementChanged.emit()
            elif key == "enforce_blocking" and not value:
                # Takes the DNS route down with it, in the safe order.
                self._blocker.shutdown()
        self.configChanged.emit()

    @pyqtSlot()
    @pyqtSlot(bool)
    def setMiniVisible(self, visible: bool = True) -> None:
        self._mini_dismissed = not visible
        if visible == self._mini_visible:
            return
        self._mini_visible = visible
        self.miniChanged.emit()

    @pyqtSlot(result=str)
    def toggleMini(self) -> str:
        """Tray menu, Ctrl+M and the D-Bus verb all land here."""
        if not self._config.mini_timer:
            self._config.update(mini_timer=True)
            self.configChanged.emit()
        self.setMiniVisible(not self._mini_visible)
        if self._mini_visible:
            self.ensure_keep_above()
        return "shown" if self._mini_visible else "hidden"

    def ensure_keep_above(
        self, position: tuple[int, int] | None = None, *, announce: bool = False
    ) -> None:
        """Install or refresh the KWin rule, including where to place the window.

        A no-op when the rule already says exactly this, so it can be called
        freely — it only ever touches KWin when something really changed.
        """
        config = self._config
        if not (config.mini_timer and config.mini_timer_keep_above):
            return
        if not keep_above.supported() or keep_above.up_to_date(position):
            return
        ok, message = keep_above.apply(position)
        log.info("keep-above rule: %s", message)
        if announce or not ok:
            self.toast.emit(message)
        self.configChanged.emit()

    @pyqtSlot(int, int)
    def saveMiniPosition(self, x: int, y: int) -> None:
        """Remember where it was dragged to — only in "remember" mode.

        In corner mode the app places the window itself, and recording that
        placement would quietly overwrite the position you had dragged it to.
        """
        if self._config.mini_timer_corner != "remember":
            return
        self._config.update(mini_timer_x=int(x), mini_timer_y=int(y))

    @pyqtSlot()
    def openWebUi(self) -> None:
        QDesktopServices.openUrl(QUrl(self._config.server_url))

    @pyqtSlot(str)
    def openUrl(self, url: str) -> None:
        if url:
            QDesktopServices.openUrl(QUrl(url))

    @pyqtSlot(result=str)
    def statusLine(self) -> str:
        """One line for the tray tooltip and the D-Bus `Status` method."""
        if not self._connected:
            return "Kadence — backend unreachable"
        if not self.timerEnabled:
            return f"Kadence — view mode · {self.completedToday}/{self.goal} today"
        if not self.running:
            return f"Kadence — idle · {self.completedToday}/{self.goal} today"
        return (
            f"{self.kindLabel} {clock(self.remainingSeconds)}"
            + (f" · {self.taskTitle}" if self.taskTitle else "")
            + f" · {self.completedToday}/{self.goal} today"
        )

    # ======================================================================
    # Worker signals
    # ======================================================================
    def _on_state(self, state: dict[str, Any]) -> None:
        previous_current = self._state.get("current") or {}
        self._state = state
        current = state.get("current") or {}
        self._remaining = int(current.get("remaining_seconds", 0))

        session_id = current.get("id")
        kind = str(current.get("kind", ""))
        status = str(current.get("status", "idle"))

        if session_id != self._last_session_id or kind != self._last_kind or status != self._last_status:
            self._on_transition(previous_current, current)
            self._last_session_id = session_id
            self._last_kind = kind
            self._last_status = status
        self._completing = False
        self.stateChanged.emit()
        self._update_launcher()

    def _on_policy(self, policy: dict[str, Any]) -> None:
        self._policy = policy
        if self._config.enforce_blocking:
            self._blocker.sync(policy)
        self.blockerChanged.emit()

    def _on_tasks(self, payload: dict[str, Any]) -> None:
        self._tasks = list(payload.get("tasks", []))
        self._task_counts = dict(payload.get("counts", {}))
        self.tasksChanged.emit()

    def _on_stats(self, payload: dict[str, Any]) -> None:
        self._stats = payload
        self.statsChanged.emit()

    def _on_report(self, payload: dict[str, Any]) -> None:
        self._report = payload
        self.reportChanged.emit()

    def _on_settings(self, payload: dict[str, Any]) -> None:
        self._settings = payload.get("settings", payload)
        self.settingsChanged.emit()

    def _on_connection(self, connected: bool, detail: str) -> None:
        self._connected = connected
        self._connection_error = detail
        self.connectionChanged.emit()
        if not connected:
            self.toast.emit(detail or "Backend unreachable")

    def _on_command_failed(self, name: str, detail: str) -> None:
        log.warning("%s failed: %s", name, detail)
        self.toast.emit(detail)

    def _on_command_done(self, name: str, result: dict[str, Any]) -> None:
        if name == "complete":
            finished = result.get("finished") or {}
            self._announce_finished(str(finished.get("kind", "work")), result)
        elif name == "send_report":
            self.toast.emit("Daily report sent" if result.get("sent") else "Report not sent — check Telegram settings")
        elif name == "refresh_sources":
            failed = [item for item in result.get("sources", []) if not item.get("ok")]
            closed = result.get("closed", 0)
            self.toast.emit(
                f"{len(failed)} source(s) failed"
                if failed
                else f"{result.get('total', 0)} open · {closed} closed since last refresh"
            )
        elif name == "refresh_sources" and result.get("closed"):
            self.toast.emit(f"{result['closed']} task(s) closed in your tools")

    # ======================================================================
    # Transitions → the system integrations
    # ======================================================================
    def _on_transition(self, previous: dict[str, Any], current: dict[str, Any]) -> None:
        if current.get("id") and current.get("id") != previous.get("id"):
            # A new interval — pause/resume of the same one must not do this —
            # gets its own chance to auto-show, even if the last one was closed.
            self._mini_dismissed = False

        focusing = current.get("kind") == "work" and current.get("status") == "running"

        if focusing:
            if self._config.inhibit_screensaver:
                self._screensaver.hold()
            if self._config.do_not_disturb:
                self._dnd.hold()
            if self._config.pause_media and previous.get("kind") != "work":
                self._media.pause_all()
        else:
            self._screensaver.release()
            self._dnd.release()
            if self._config.pause_media and previous.get("kind") == "work":
                self._media.resume_paused()

    def _announce_finished(self, kind: str, result: dict[str, Any]) -> None:
        auto = result.get("auto_started") or {}
        done = int(result.get("completed_today", self.completedToday))
        goal = int(result.get("goal", self.goal))

        if kind == "work":
            summary = "Pomodoro done 🍅"
            body = f"{done}/{goal} today."
            if auto:
                body += f" {KIND_LABELS.get(str(auto.get('kind')), 'Break')} started automatically."
            actions = (
                {
                    "break": ("Start break", self.startBreak),
                    "again": ("Another pomodoro", lambda: self.startWork()),
                }
                if not auto
                else {"skip": ("Skip the break", lambda: self.startWork())}
            )
        else:
            summary = "Break over ☕"
            body = "Back to it — one more interval."
            actions = {"work": ("Start focus", lambda: self.startWork()), "five": ("+5 min break", lambda: self.extend(5))}

        if self._config.notifications:
            self._notifier.notify(
                summary,
                body,
                actions=actions if self._config.notification_actions else None,
                urgency=URGENCY_CRITICAL if kind == "work" else 1,
                timeout_ms=0 if kind != "work" else 12000,
            )
        if result.get("celebration"):
            self.toast.emit("Milestone reached — Telegram got a cheer 🎉")

    def _update_launcher(self) -> None:
        if not self._config.taskbar_progress:
            return
        if self.running:
            self._launcher.update(progress=self.progress, count=self.completedToday or None)
        else:
            self._launcher.update(progress=None, count=self.completedToday or None)

    # ---- local clock -------------------------------------------------------

    def _on_tick(self) -> None:
        if not self.running or self.status == "paused":
            return
        if self._remaining > 0:
            self._remaining -= 1
            self.stateChanged.emit()
            if self._remaining % 5 == 0:
                self._update_launcher()
            return
        if not self._completing:
            # The countdown reached zero: the server books the interval, and its
            # reply decides what happens next (auto-break, or nothing).
            self._completing = True
            self.complete()

    def _check_idle(self) -> None:
        limit = self._config.pause_on_idle_minutes
        if not limit or not self.running or self.status != "running" or self.kind != "work":
            return
        idle = self._session.idle_seconds()
        if idle >= 0 and idle >= limit * 60:
            self.pause()
            self.toast.emit(f"Paused — no input for {limit} minutes")
            if self._config.notifications:
                self._notifier.notify("Timer paused", f"You have been away for {limit} minutes.")

    def _on_session_locked(self) -> None:
        if not self._config.pause_on_lock:
            return
        if self.running and self.status == "running":
            self._paused_by_lock = True
            self.pause()

    def _on_session_unlocked(self) -> None:
        if self._paused_by_lock and self.running and self.status == "paused":
            self.resume()
            if self._config.notifications:
                self._notifier.notify("Welcome back", "Your interval is running again.")
        self._paused_by_lock = False

    # ---- blocker callbacks -------------------------------------------------

    def _report_block(self, kind: str, target: str, action: str, details: str | None) -> None:
        self._send("report_block", {"kind": kind, "target": target, "action": action, "details": details})

    def _blocker_notice(self, summary: str, body: str) -> None:
        if self._config.notifications:
            self._notifier.notify(summary, body, urgency=URGENCY_CRITICAL, timeout_ms=6000)
        self.toast.emit(body)

    # ---- shutdown ----------------------------------------------------------

    def shutdown(self) -> None:
        """Hand everything back: inhibits, DND, the hosts file and the DNS route."""
        self._tick.stop()
        self._idle_check.stop()
        self._screensaver.release()
        self._dnd.release()
        self._launcher.clear()
        try:
            self._blocker.shutdown()
        except Exception:  # pragma: no cover
            log.exception("could not clear the block on exit")
        self._thread.quit()
        self._thread.wait(2000)