// SPDX-License-Identifier: LGPL-3.0-or-later

import QtQuick 2.12
import QtQuick.Layouts 1.12
import "../../Base"
import "AutoCompletion"
import "Banners"
import "Composer"
import "FileTransfer"
import "Timeline"

HColumnPage {
    id: chatPage

    property bool loadedOnce: false
    property var loadMembersFuture: null

    readonly property alias composer: composer
    readonly property bool loadEventList:
        mainUI.mainPane.collapse ?
        ! mainUI.mainPane.visible : ! pageLoader.appearAnimation.running


    padding: 0
    column.spacing: 0

    onLoadEventListChanged: if (loadEventList) loadedOnce = true
    Component.onDestruction: if (loadMembersFuture) loadMembersFuture.cancel()

    Timer {
        interval: 200
        running: true
        onTriggered: loadMembersFuture = py.callClientCoro(
            chat.userId,
            "load_all_room_members",
            [chat.roomId],
            () => { loadMembersFuture = null },
        )
    }

    RoomHeader {
        Layout.fillWidth: true
    }

    HLoader {
        id: eventListLoader
        opacity: loadEventList ? 1 : 0
        sourceComponent:
            loadedOnce || loadEventList ? evListComponent : placeholder

        Layout.fillWidth: true
        Layout.fillHeight: true

        Behavior on opacity { HNumberAnimation {} }

        Component {
            id: placeholder
            Item {}
        }

        Component {
            id: evListComponent
            EventList {}
        }
    }

    TypingMembersBar {
        typingMembers: JSON.parse(chat.roomInfo.typing_members)

        Layout.fillWidth: true
    }

    ReplyBar {
        replyToEventId: chat.replyToEventId
        replyToUserId: chat.replyToUserId
        replyToDisplayName: chat.replyToDisplayName
        onCancel: {
            chat.replyToEventId     = ""
            chat.replyToUserId      = ""
            chat.replyToDisplayName = ""
        }

        Layout.fillWidth: true
    }

    TransferList {
        Layout.fillWidth: true
        Layout.minimumHeight: implicitHeight
        Layout.preferredHeight: implicitHeight * transferCount
        Layout.maximumHeight: chatPage.height / 6

        Behavior on Layout.preferredHeight { HNumberAnimation {} }
    }

    UserAutoCompletion {
        id: userCompletion
        textArea: composer.messageArea
        clip: true

        Layout.fillWidth: true
        Layout.maximumHeight: chatPage.height / 4
    }

    InviteBanner {
        id: inviteBanner
        visible: ! chat.roomInfo.left && inviterId
        inviterId: chat.roomInfo.inviter_id

        Layout.fillWidth: true
    }

    LeftBanner {
        id: leftBanner
        visible: chat.roomInfo.left

        Layout.fillWidth: true
    }

    Composer {
        id: composer
        userCompletion: userCompletion
        eventList: loadEventList ? eventListLoader.item.eventList : null
        visible: ! chat.roomInfo.left && ! chat.roomInfo.inviter_id

        Layout.fillWidth: true
        Layout.maximumHeight: parent.height / 2
    }
}