/*
    SPDX-FileCopyrightText: 2018-2019 Kai Uwe Broulik <kde@privat.broulik.de>

    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/

import QtQuick 2.8
import QtQml 2.15

import org.kde.plasma.plasmoid 2.0
import org.kde.plasma.core as PlasmaCore
import org.kde.kquickcontrolsaddons 2.0 // For KCMShell
import org.kde.kirigami 2.20 as Kirigami

import org.kde.coreaddons 1.0 as KCoreAddons
import org.kde.kcmutils as KCMUtils
import org.kde.config as KConfig

import org.kde.notificationmanager as NotificationManager

import org.kde.plasma.private.notifications 2.0 as Notifications

import "global"

PlasmoidItem {
    id: root

    property alias clearHistoryAction: clearHistory

    readonly property int unreadCount: Math.min(99, historyModel.unreadNotificationsCount)

    readonly property bool inhibitedOrBroken: Globals.inhibited || !NotificationManager.Server.valid

    readonly property bool inPanel: (Plasmoid.location === PlasmaCore.Types.TopEdge
        || Plasmoid.location === PlasmaCore.Types.RightEdge
        || Plasmoid.location === PlasmaCore.Types.BottomEdge
        || Plasmoid.location === PlasmaCore.Types.LeftEdge)

    readonly property int effectiveStatus: historyModel.activeJobsCount > 0
                     || historyModel.unreadNotificationsCount > 0
                     || Globals.inhibited ? PlasmaCore.Types.ActiveStatus
                                          : PlasmaCore.Types.PassiveStatus
    onEffectiveStatusChanged: {
        if (effectiveStatus === PlasmaCore.Types.PassiveStatus) {
            // HACK System Tray only lets applets self-hide when in Active state
            // When we clear the notifications, the status is updated right away
            // as a result of model signals, and when we then try to collapse
            // the popup isn't hidden.
            Qt.callLater(function() {
                Plasmoid.status = effectiveStatus;
            });
        } else {
            Plasmoid.status = effectiveStatus;
        }
    }

    Plasmoid.status: effectiveStatus

    toolTipSubText: {
        var lines = [];

        if (jobAggregator.count > 0) {
            let description = i18np("%1 running job", "%1 running jobs", jobAggregator.count);

            if (jobAggregator.summary) {
                if (jobAggregator.percentage > 0) {
                    description = i18nc("Job title (percentage)", "%1 (%2%)", jobAggregator.summary, jobAggregator.percentage);
                } else {
                    description = jobAggregator.summary;
                }
            } else if (jobAggregator.percentage > 0) {
                description = i18np("%1 running job (%2%)", "%1 running jobs (%2%)", jobAggregator.count, jobAggregator.percentage);
            }

            lines.push(description);
        }

        if (!NotificationManager.Server.valid) {
            lines.push(i18n("Notification service not available"));
        } else {
            // Any notification that is newer than "lastRead" is "unread"
            // since it doesn't know the popup is on screen which makes the user see it
            var actualUnread = historyModel.unreadNotificationsCount - Globals.popupNotificationsModel.activeNotificationsCount;
            if (actualUnread > 0) {
                lines.push(i18np("%1 unread notification", "%1 unread notifications", actualUnread));
            }

            if (Globals.inhibited) {
                var inhibitedUntil = notificationSettings.notificationsInhibitedUntil
                var inhibitedUntilTime = inhibitedUntil.getTime();
                var inhibitedUntilValid = !isNaN(inhibitedUntilTime);
                var dateNow = Date.now();

                // Show until time if valid but not if too far in the future
                // TODO check app inhibition, too
                if (inhibitedUntilValid && inhibitedUntilTime - dateNow > 0
                        && inhibitedUntilTime - dateNow < 100 * 24 * 60 * 60 * 1000 /* 100 days*/) {
                        lines.push(i18n("Do not disturb until %1; middle-click to exit now",
                                     KCoreAddons.Format.formatRelativeDateTime(inhibitedUntil, Locale.ShortFormat)));
                } else {
                    lines.push(i18n("Do not disturb mode active; middle-click to exit"));
                }
            } else {
                if (lines.length === 0) {
                    lines.push(i18n("No unread notifications"));
                }
                lines.push(i18n("Middle-click to enter do not disturb mode"));
            }
        }

        return lines.join("\n");
    }

    // Even though the actual icon is drawn with custom code in CompactRepresentation,
    // set the icon property here anyway because it's useful in other contexts
    Plasmoid.icon: {
        let iconName;
        if (root.inhibitedOrBroken) {
            iconName = "notifications-disabled";
        } else if (root.unreadCount > 0) {
            iconName = "notification-active";
        } else {
            iconName = "notification-inactive"
        }
        // "active jobs" state not included here since that requires custom painting,
        // and not just a simple icon

        if (inPanel) {
            return symbolicizeIconName(iconName);
        }

        return iconName;
    }

    switchWidth: Kirigami.Units.gridUnit * 14
    // This is to let the plasmoid expand in a vertical panel for a "sidebar" notification panel
    // The CompactRepresentation size is limited to not have the notification icon grow gigantic
    // but it should still switch over to full rep once there's enough width (disregarding the limited height)
    switchHeight: Plasmoid.formFactor === PlasmaCore.Types.Vertical ? 1 : Kirigami.Units.gridUnit * 10

    onExpandedChanged: expanded => {
        if (!expanded) {
            historyModel.lastRead = undefined; // reset to now
            historyModel.collapseAllGroups();
        }
    }

    compactRepresentation: CompactRepresentation {
        activeCount: Globals.popupNotificationsModel.activeNotificationsCount
        unreadCount: root.unreadCount

        jobsCount: historyModel.activeJobsCount
        jobsPercentage: historyModel.jobsPercentage

        inhibited: root.inhibitedOrBroken
    }

    fullRepresentation: FullRepresentation {

    }

    NotificationManager.Settings {
        id: notificationSettings
    }

    NotificationManager.Notifications {
        id: historyModel
        showExpired: true
        showDismissed: true
        showJobs: notificationSettings.jobsInNotifications
        sortMode: NotificationManager.Notifications.SortByDate
        groupMode: NotificationManager.Notifications.GroupApplicationsFlat
        groupLimit: 2
        expandUnread: true
        blacklistedDesktopEntries: notificationSettings.historyBlacklistedApplications
        blacklistedNotifyRcNames: notificationSettings.historyBlacklistedServices
        urgencies: {
            var urgencies = NotificationManager.Notifications.CriticalUrgency
                          | NotificationManager.Notifications.NormalUrgency;
            if (notificationSettings.lowPriorityHistory) {
                urgencies |= NotificationManager.Notifications.LowUrgency;
            }
            return urgencies;
        }

        onCountChanged: {
            if (count === 0) {
                closePlasmoid();
            }
        }
    }

    Notifications.JobAggregator {
        id: jobAggregator
        sourceModel: NotificationManager.Notifications {
            id: jobAggregatorModel
            showExpired: historyModel.showExpired
            showDismissed: historyModel.showDismissed
            showJobs: historyModel.showJobs
            showNotifications: false
            blacklistedDesktopEntries: historyModel.blacklistedDesktopEntries
            blacklistedNotifyRcNames: historyModel.blacklistedNotifyRcNames
            urgencies: historyModel.urgencies
        }
    }

    function closePlasmoid() {
        if (root.hideOnWindowDeactivate) {
            root.expanded = false;
        }
    }

    function action_configure() {
        KCMUtils.KCMLauncher.openSystemSettings("kcm_notifications");
    }

    function symbolicizeIconName(iconName) {
        const symbolicSuffix = "-symbolic";
        if (iconName.endsWith(symbolicSuffix)) {
            return iconName;
        }

        return iconName + symbolicSuffix;
    }

    Plasmoid.contextualActions: [
        PlasmaCore.Action {
            id: clearHistory
            text: i18n("Clear All Notifications")
            icon.name: "edit-clear-history"
            visible: historyModel.expiredNotificationsCount > 0
            onTriggered: {
                historyModel.clear(NotificationManager.Notifications.ClearExpired);
                // clear is async,
                historyModel.countChanged.connect(closeWhenCleared)
            }
            function closeWhenCleared() {
                if (historyModel.count === 0) {
                    closePlasmoid();
                }
                historyModel.countChanged.disconnect(closeWhenCleared)
            }
        }
    ]

    PlasmaCore.Action {
        id: configureAction
        text: i18n("&Configure Event Notifications and Actions…")
        icon.name: "configure"
        visible: KConfig.KAuthorized.authorizeControlModule("kcm_notifications");
        onTriggered: KCMUtils.KCMLauncher.openSystemSettings("kcm_notifications");
    }

    Component.onCompleted: {
        Globals.adopt(root);

        // The applet's config window has nothing in it, so let's make the header's
        // "Configure" button open the KCM instead, like we do in the Bluetooth
        // and Networks applets
        Plasmoid.setInternalAction("configure", configureAction)
    }
    Component.onDestruction: {
        Globals.forget(root);
    }
}