// The focus tab: the modes that quiet this machine, and the timed session that
// is deliberately not one of them.
//
// Modes are conditions rather than alarms -- a mode is on because something is
// true right now -- so the editor never asks anyone to schedule an event. It
// asks what has to be true. Order is priority, which is why the list can be
// reordered and says so.

import QtQuick
import qs.config
import qs.services

SettingsPage {
    id: root

    // One mode is open for editing at a time; the point is a card you can read,
    // not every mode unfolded at once.
    property string expandedMode: ""

    // The exception list belongs to the page rather than to the row: the
    // applications it is chosen from are the same universe the per-application
    // notification rules use, and the page is what reads it.
    function toggleAllowed(mode: var, appId: string, allowed: bool): void {
        const current = Array.isArray(mode.allow) ? mode.allow.map(String) : [];
        const at = current.indexOf(appId);
        if (allowed && at < 0)
            current.push(appId);
        else if (!allowed && at >= 0)
            current.splice(at, 1);
        FocusModes.update(String(mode.id), { allow: current });
    }

    title: "Focus"
    lede: "Modes quiet this machine on their own terms — first matching mode wins, and the order below is the priority."

    SettingsCard {
        title: "Focus modes"
        subtitle: FocusModes.active
            ? FocusModes.activeName + " is on because " + FocusModes.activeReason + "."
            : "Drag a mode by its grip, or press up and down on it, to change which one wins."

        TextRow {
            visible: FocusModes.modes.length === 0
            label: "No focus modes"
            detail: "Add one below and give it something to react to."
            divider: false
        }

        Repeater {
            model: FocusModes.modes

            delegate: FocusModeRow {
                id: modeRow

                required property var modelData

                width: parent.width
                mode: modeRow.modelData
                knownApps: Notifs.applications
                expanded: root.expandedMode === String(modeRow.modelData.id ?? "")
                running: FocusModes.activeMode?.id === String(modeRow.modelData.id ?? "")
                onActivated: root.expandedMode = modeRow.expanded
                    ? ""
                    : String(modeRow.modelData.id ?? "")
                onAllowToggled: (appId, allowed) =>
                    root.toggleAllowed(modeRow.modelData, appId, allowed)
            }
        }

        Item {
            width: parent.width
            height: 58

            Rectangle {
                id: newMode

                anchors.left: parent.left
                anchors.right: parent.right
                anchors.verticalCenter: parent.verticalCenter
                height: 44
                radius: Theme.cardRadius
                color: Theme.alpha(Theme.fg, newModeHover.hovered ? 0.06 : 0.02)
                border.width: 1
                border.color: Theme.alpha(Theme.fg, 0.16)

                Text {
                    anchors.centerIn: parent
                    text: "+ New focus mode"
                    color: newModeHover.hovered ? Theme.fg : Theme.fgDim
                    font.family: Theme.fontFamily
                    font.pixelSize: Theme.fontSize
                    font.weight: Font.Medium
                }

                HoverHandler {
                    id: newModeHover
                    cursorShape: Qt.PointingHandCursor
                }

                // Created open, so the first thing anyone sees is the editor
                // rather than a row named "New mode" with nothing to react to.
                TapHandler {
                    onTapped: root.expandedMode = String(FocusModes.createMode("New mode"))
                }
            }
        }
    }

    SettingsCard {
        title: "Focus sessions"
        subtitle: "A timed, workspace-bound sprint — separate from modes, and it owns Do Not Disturb while it runs."

        SegmentRow {
            label: "Default duration"
            detail: "Used by Super+Shift+F and Quick Settings"
            options: [
                { value: 25, label: "25 min" },
                { value: 45, label: "45 min" },
                { value: 60, label: "60 min" },
                { value: 90, label: "90 min" }
            ]
            value: DesktopPreferences.get("focusDurationMinutes")
            onSelected: value => SystemSettings.commitPreference("focusDurationMinutes", value)
        }

        SettingRow {
            label: "Keep the machine awake"
            detail: Caffeine.enabled
                ? "The display will not blank or lock while this is on"
                : "Caffeine — outside of sessions and modes too"
            controlWidth: 48

            SettingsToggle {
                anchors.right: parent.right
                anchors.verticalCenter: parent.verticalCenter
                checked: Caffeine.enabled
                onToggled: value => Caffeine.enabled = value
            }
        }

        SettingRow {
            label: FocusSession.active
                ? `Active on ${FocusSession.workspaceLabel}`
                : "No session running"
            detail: FocusSession.active
                ? `${FocusSession.remainingText} remaining`
                : "Start one without leaving Settings"
            divider: false
            controlWidth: 120

            SettingsButton {
                anchors.right: parent.right
                anchors.verticalCenter: parent.verticalCenter
                text: FocusSession.active ? "Show controls" : "Start focus"
                tone: FocusSession.active ? "normal" : "accent"
                onClicked: FocusSession.reveal()
            }
        }
    }
}