import QtQuick 2.14
import QtQuick.Controls 2.14
import QtGraphicalEffects 1.13
import Qt.labs.qmlmodels 1.0

import StatusQ.Core 0.1
import StatusQ.Controls 0.1

import SortFilterProxyModel 0.2

import shared 1.0
import shared.popups 1.0
import shared.views.chat 1.0

import utils 1.0

import "../views"
import "../panels"

Popup {
    id: root

    enum ActivityCategory {
        All,
        Admin,
        Mentions,
        Replies,
        ContactRequests,
        IdentityVerification,
        Transactions,
        Membership,
        System
    }
    property int currentActivityCategory: ActivityCenterPopup.ActivityCategory.All
    property bool hasMentions: false
    property bool hasReplies: false
//    property bool hasContactRequests: false

    property bool hideReadNotifications: false
    property var store
    property var chatSectionModule
    property var messageContextMenu: MessageContextMenuView {
        store: root.store
        reactionModel: root.store.emojiReactionsModel
    }

    readonly property int unreadNotificationsCount : root.store.unreadNotificationsCount

    function filterActivityCategories(notificationType) {
        switch (root.currentActivityCategory) {
        case ActivityCenterPopup.ActivityCategory.All:
            return true
        case ActivityCenterPopup.ActivityCategory.Mentions:
            return notificationType === Constants.activityCenterNotificationTypeMention
        case ActivityCenterPopup.ActivityCategory.Replies:
            return notificationType === Constants.activityCenterNotificationTypeReply
        case ActivityCenterPopup.ActivityCategory.ContactRequests:
            return notificationType === Constants.activityCenterNotificationTypeContactRequest
        default:
            return false
        }
    }

    onOpened: {
        root.store.loadMoreNotifications()
        Global.popupOpened = true
    }
    onClosed: {
        Global.popupOpened = false
    }

    modal: false

    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutside
    parent: Overlay.overlay

    dim: true
    Overlay.modeless: MouseArea {
        onClicked: activityCenter.close()
    }

    width: 560
    background: Rectangle {
        color: Style.current.background
        radius: Style.current.radius
        layer.enabled: true
        layer.effect: DropShadow {
            verticalOffset: 3
            radius: Style.current.radius
            samples: 15
            fast: true
            cached: true
            color: Style.current.dropShadow
        }
    }
    x: Global.applicationWindow.width - root.width - Style.current.halfPadding
    padding: 0

    ActivityCenterPopupTopBarPanel {
        id: activityCenterTopBar
        width: parent.width
        hasReplies: root.hasReplies
        hasMentions: root.hasMentions
        hideReadNotifications: root.hideReadNotifications
        currentActivityCategory: root.currentActivityCategory
        onCategoryTriggered: {
            root.currentActivityCategory = category;
        }
        onMarkAllReadClicked: {
            errorText = root.store.activityCenterModuleInst.markAllActivityCenterNotificationsRead()
        }
    }

    StatusListView {
        id: listView
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.top: activityCenterTopBar.bottom
        anchors.bottom: parent.bottom
        anchors.margins: Style.current.smallPadding

        model: SortFilterProxyModel {
            sourceModel: root.store.activityCenterList

            filters: ExpressionFilter { expression: filterActivityCategories(model.notificationType) }
        }

        delegate: DelegateChooser {
            role: "notificationType"

            DelegateChoice {
                roleValue: Constants.activityCenterNotificationTypeMention
                ActivityNotificationMention { store: root.store; notification: model }
            }
            DelegateChoice {
                roleValue: Constants.activityCenterNotificationTypeReply
                ActivityNotificationReply { store: root.store; notification: model }
            }
            DelegateChoice {
                roleValue: Constants.activityCenterNotificationTypeContactRequest
                ActivityNotificationContactRequest { store: root.store; notification: model }
            }
        }
    }
}

//    // TODO: replace with StatusListView
//     StatusScrollView {
//         id: scrollView
//         anchors.left: parent.left
//         anchors.right: parent.right
//         anchors.top: activityCenterTopBar.bottom
//         anchors.topMargin: 13
//         anchors.bottom: parent.bottom
//         anchors.bottomMargin: Style.current.smallPadding
//         width: parent.width

//         ScrollBar.horizontal.policy: ScrollBar.AlwaysOff

//         Column {
//             id: notificationsContainer
//             width: scrollView.availableWidth
//             spacing: 0

//             Repeater {
//                 model: notifDelegateList
//             }

//             DelegateModelGeneralized {
//                 id: notifDelegateList

//                 lessThan: [
//                     function(left, right) { return left.timestamp > right.timestamp }
//                 ]

//                 model: root.store.activityCenterList

//                 delegate: Item {
//                     id: notificationDelegate
//                     width: parent.availableWidth
//                     height: notifLoader.active ? childrenRect.height : 0

//                     property int idx: DelegateModel.itemsIndex

//                     Component.onCompleted: {
//                         switch (model.notificationType) {
//                         case Constants.activityCenterNotificationTypeMention:
//                             if (!hasMentions) {
//                                 hasMentions = true
//                             }
//                             break

//                         case Constants.activityCenterNotificationTypeReply:
//                             if (!hasReplies) {
//                                 hasReplies = true
//                             }
//                             break
//                         }
//                     }

//                     Loader {
//                         property int previousNotificationIndex: {
//                             if (notificationDelegate.idx === 0) {
//                                 return 0
//                             }

//                             // This is used in order to have access to the previous message and determine the timestamp
//                             // we can't rely on the index because the sequence of messages is not ordered on the nim side
//                             if (notificationDelegate.idx < notifDelegateList.items.count - 1) {
//                                 return notifDelegateList.items.get(notificationDelegate.idx - 1).model.index
//                             }
//                             return -1;
//                         }
//                         readonly property string previousNotificationTimestamp: notificationDelegate.idx === 0 ? "" :
//                                                        root.store.activityCenterList.getNotificationData(previousNotificationIndex, "timestamp")
//                         onPreviousNotificationTimestampChanged: {
//                             root.store.messageStore.prevMsgTimestamp = previousNotificationTimestamp;
//                         }

//                         id: notifLoader
//                         anchors.top: parent.top
//                         active: !!sourceComponent
//                         width: parent.width
//                         sourceComponent: {
//                             switch (model.notificationType) {
//                             case Constants.activityCenterNotificationTypeOneToOne:
//                             case Constants.activityCenterNotificationTypeMention:
//                             case Constants.activityCenterNotificationTypeReply: return messageNotificationComponent
//                             case Constants.activityCenterNotificationTypeGroupRequest: return groupRequestNotificationComponent
//                             default: return null
//                             }
//                         }
//                         onLoaded: {
//                             if (model.notificationType === Constants.activityCenterNotificationTypeReply ||
//                                     model.notificationType === Constants.activityCenterNotificationTypeGroupRequest) {
//                                 item.previousNotificationIndex = Qt.binding(() => notifLoader.previousNotificationIndex);
//                                 item.previousNotificationTimestamp = Qt.binding(() => notifLoader.previousNotificationTimestamp);
//                             }
//                         }
//                     }

//                     Component {
//                         id: messageNotificationComponent

//                         ActivityCenterMessageComponentView {
//                             id: activityCenterMessageView
//                             store: root.store
//                             acCurrentActivityCategory: root.currentActivityCategory
//                             chatSectionModule: root.chatSectionModule
//                             messageContextMenu: root.messageContextMenu
//                             hideReadNotifications: root.hideReadNotifications
//                             Connections {
//                                 target: root
//                                 onOpened: activityCenterMessageView.reevaluateItemBadge()
//                             }
//                             onActivityCenterClose: {
//                                 root.close();
//                             }
//                             Component.onCompleted: {
//                                 activityCenterMessageView.reevaluateItemBadge()
//                             }
//                         }
//                     }

//                     Component {
//                         id: groupRequestNotificationComponent

//                         ActivityCenterGroupRequest {
//                             store: root.store
//                             hideReadNotifications: root.hideReadNotifications
//                             acCurrentActivityCategoryAll: root.currentActivityCategory === ActivityCenter.ActivityCategory.All
//                         }
//                     }
//                 }
//             }

//             Item {
//                 visible: root.store.activityCenterModuleInst.hasMoreToShow
//                 width: parent.width
//                 height: visible ? showMoreBtn.height + showMoreBtn.anchors.topMargin : 0
//                 StatusButton {
//                     id: showMoreBtn
//                     text: qsTr("Show more")
//                     anchors.horizontalCenter: parent.horizontalCenter
//                     anchors.top: parent.top
//                     anchors.topMargin: Style.current.smallPadding
//                     onClicked: root.store.activityCenterModuleInst.loadMoreNotifications()
//                 }
//             }
//         }
//     }
// }