import QtQuick 2.15
import QtQml 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15

import StatusQ.Core 0.1
import StatusQ.Components 0.1
import StatusQ.Controls 0.1
import StatusQ.Core.Theme 0.1
import StatusQ.Popups 0.1

import SortFilterProxyModel 0.2

import utils 1.0

import "../panels"
import "../popups"
import "../stores"
import "../controls"

import AppLayouts.Wallet.stores 1.0 as WalletStores
import AppLayouts.Wallet.popups 1.0
import AppLayouts.Wallet.controls 1.0
import AppLayouts.Wallet.panels 1.0

ColumnLayout {
    id: root

    property var overview

    signal launchTransactionDetail(var transaction)

    QtObject {
        id: d
        property bool isLoading: false
        property var activityFiltersStore: WalletStores.ActivityFiltersStore{}
    }

    Connections {
        target: RootStore.history
        function onLoadingTrxHistoryChanged(isLoading: bool, address: string) {
            if (root.overview.mixedcaseAddress.toLowerCase() === address.toLowerCase()) {
                d.isLoading = isLoading
            }
        }
    }

    StyledText {
        id: nonArchivalNodeError
        Layout.alignment: Qt.AlignTop

        visible: RootStore.isNonArchivalNode
        text: qsTr("Status Desktop is connected to a non-archival node. Transaction history may be incomplete.")
        font.pixelSize: Style.current.primaryTextFontSize
        color: Style.current.danger
    }

    ShapeRectangle {
        id: noTxs
        Layout.fillWidth: true
        Layout.preferredHeight: 42
        visible: !d.isLoading && transactionListRoot.count === 0 && !d.activityFiltersStore.filtersSet
        font.pixelSize: Style.current.primaryTextFontSize
        text: qsTr("Activity for this account will appear here")
    }

    // Tp-do make connections with nim once logic is ready
    ActivityFilterPanel {
        id: filterComponent
        visible: !d.isLoading && (transactionListRoot.count !== 0 || d.activityFiltersStore.filtersSet)
        Layout.fillWidth: true
        Layout.preferredHeight: 50
        activityFilterStore: d.activityFiltersStore
        store: WalletStores.RootStore
    }

    Separator {
        Layout.fillWidth: true
        visible: filterComponent.visible
    }

    StatusListView {
        id: transactionListRoot
        objectName: "walletAccountTransactionList"
        Layout.alignment: Qt.AlignTop
        Layout.topMargin: nonArchivalNodeError.visible || noTxs.visible ? Style.current.padding : 0
        Layout.bottomMargin:  Style.current.padding
        Layout.fillWidth: true
        Layout.fillHeight: true

        property string firstSection

        model: SortFilterProxyModel {
            id: txModel

            sourceModel: RootStore.historyTransactions

            // LocaleUtils is not accessable from inside expression, but local function works
            property var formatDate: (ms) => LocaleUtils.formatDate(ms, Locale.ShortFormat)
            proxyRoles: ExpressionRole {
                name: "date"
                expression: {
                    return model.activityEntry.timestamp > 0 ? txModel.formatDate(model.activityEntry.timestamp * 1000) : (d.isLoading ? " " : "") //  not empty, because section will not be displayed when loading if empty
                }
            }
        }

        delegate: transactionDelegate

        footer: footerComp

        displaced: Transition { // TODO Remove animation when ordered fetching of transactions is implemented
            NumberAnimation { properties: "y"; duration: 250; easing.type: Easing.Linear; alwaysRunToEnd: true }
        }

        readonly property point lastVisibleItemPos: Qt.point(0, contentY + height - 1)
        property int lastVisibleIndex: indexAt(lastVisibleItemPos.x, lastVisibleItemPos.y)

        onCountChanged: {
            // Preserve last visible item in view when more items added at the end or
            // inbetween
            // TODO Remove this logic, when new activity design is implemented
            // and items are loaded in order
            const lastVisibleItem = itemAtIndex(lastVisibleIndex)
            const newItem = itemAt(lastVisibleItemPos.x, lastVisibleItemPos.y)
            const lastVisibleItemY = lastVisibleItem ? lastVisibleItem.y : -1
            if (newItem) {
                if (newItem.y < lastVisibleItemY) { // item inserted higher than last visible
                    lastVisibleIndex = indexAt(lastVisibleItemPos.x, lastVisibleItemPos.y)
                }
            }
        }
        currentIndex: 0

        property bool userScrolled: false

        // TODO Remove this logic, when new activity design is implemented
        // and items are loaded in order
        onMovingVerticallyChanged: {
            if (!userScrolled) {
                userScrolled = true
                currentIndex = Qt.binding(() => lastVisibleIndex >= 0 ? lastVisibleIndex : (count - 1))
            }

            lastVisibleIndex = indexAt(lastVisibleItemPos.x, lastVisibleItemPos.y)
        }

        ScrollBar.vertical: StatusScrollBar {}

        section.property: "date"
        topMargin: -20 // Top margin for first section. Section cannot have different sizes
        section.delegate: ColumnLayout {
            id: sectionDelegate

            readonly property bool isFirstSection: ListView.view.firstSection === section

            width: ListView.view.width
            // display always first section. Other sections when more items are being fetched must not be visible
            // 1 because we don't use empty for loading state
            // Additionaly height must be defined so all sections use same height to to glitch sections when updating model
            height: isFirstSection || section.length > 1 ? 58 : 0
            visible: height > 0 // display always first section. Other sections when more items are being fetched must not be visible
            spacing: 0

            required property string section

            Separator {
                Layout.fillWidth: true
                Layout.topMargin: 20
                implicitHeight: 1
                visible: !sectionDelegate.isFirstSection
            }

            StatusTextWithLoadingState {
                id: sectionText
                Layout.alignment: Qt.AlignBottom
                leftPadding: 16
                bottomPadding: 8
                text: loading ? "dummy" : parent.section // dummy text because loading component height depends on text height, and not visible with height == 0
                Binding on width {
                    when: sectionText.loading
                    value: 56
                    restoreMode: Binding.RestoreBindingOrValue
                }
                customColor: Theme.palette.baseColor1
                font.pixelSize: 13
                verticalAlignment: Qt.AlignBottom
                loading: { // First section must be loading when first item in the list is loading. Other sections are never visible until have date value
                    if (parent.ListView.view.count > 0) {
                        const firstItem = parent.ListView.view.itemAtIndex(0)
                        if (sectionDelegate.isFirstSection && firstItem && firstItem.loading) {
                            return true
                        }
                    }
                    return false
                }
            }
        }
        onAtYEndChanged: if(atYEnd) RootStore.fetchMoreTransactions()
    }

    StatusMenu {
        id: delegateMenu

        hideDisabledItems: true

        property var transaction
        property var transactionDelegate

        function openMenu(delegate, mouse) {
            if (!delegate || !delegate.modelData)
                return

            delegateMenu.transactionDelegate = delegate
            delegateMenu.transaction = delegate.modelData
            repeatTransactionAction.enabled = !overview.isWatchOnlyAccount && delegate.modelData.txType === TransactionDelegate.Send
            popup(delegate, mouse.x, mouse.y)
        }

        onClosed: {
            delegateMenu.transaction = null
            delegateMenu.transactionDelegate = null
        }

        StatusAction {
            id: repeatTransactionAction
            text: qsTr("Repeat transaction")
            enabled: false
            icon.name: "rotate"
            onTriggered: {
                if (!delegateMenu.transaction)
                    return
                root.sendModal.open(delegateMenu.transaction.to)
            }
        }
        StatusSuccessAction {
            text: qsTr("Copy details")
            successText: qsTr("Details copied")
            icon.name: "copy"
            onTriggered: {
                if (!delegateMenu.transactionDelegate)
                    return
                RootStore.copyToClipboard(delegateMenu.transactionDelegate.getDetailsString())
            }
        }
        StatusMenuSeparator {
            visible: filterAction.enabled
        }
        StatusAction {
            id: filterAction
            enabled: false
            text: qsTr("Filter by similar")
            icon.name: "filter"
            onTriggered: {
                // TODO apply filter
            }
        }
    }

    Component {
        id: transactionDelegate
        TransactionDelegate {
            width: ListView.view.width
            modelData: model.activityEntry
            currentCurrency: RootStore.currentCurrency
            cryptoValue: isModelDataValid && modelData.value ? modelData.value.amount : 0.0
            fiatValue: isModelDataValid ? RootStore.getFiatValue(cryptoValue, symbol, currentCurrency): 0.0
            networkIcon: isModelDataValid ? RootStore.getNetworkIcon(modelData.chainId) : ""
            networkColor: isModelDataValid ? RootStore.getNetworkColor(modelData.chainId) : ""
            networkName: isModelDataValid ? RootStore.getNetworkFullName(modelData.chainId) : ""
            symbol: isModelDataValid && !!modelData.symbol ? modelData.symbol : ""
            transactionStatus: isModelDataValid ? modelData.status : 0
            timeStampText: isModelDataValid ? LocaleUtils.formatRelativeTimestamp(modelData.timestamp * 1000) : ""
            addressNameTo: isModelDataValid ? WalletStores.RootStore.getNameForAddress(modelData.recipient) : ""
            addressNameFrom: isModelDataValid ? WalletStores.RootStore.getNameForAddress(modelData.sender) : ""
            rootStore: RootStore
            walletRootStore: WalletStores.RootStore
            onClicked: {
                if (mouse.button === Qt.RightButton) {
                    delegateMenu.openMenu(this, mouse, modelData)
                } else {
                    launchTransactionDetail(modelData)
                }
            }
            loading: false // TODO handle loading state

            Component.onCompleted: {
                if (index == 0)
                    ListView.view.firstSection = date
            }
        }
    }

    Component {
        id: footerComp
        ColumnLayout {
            width: root.width
            visible: !RootStore.historyTransactions.hasMore && transactionListRoot.count !== 0
            spacing: 12
            Separator {
                Layout.topMargin: Style.current.bigPadding
                Layout.fillWidth: true
                visible: !RootStore.historyTransactions.hasMore
            }
            StatusBaseText {
                Layout.fillWidth: true
                Layout.alignment: Qt.AlignHCenter
                text: qsTr("You have reached the beginning of the activity for this account")
                font.pixelSize: 13
                color: Theme.palette.baseColor1
                visible: !RootStore.historyTransactions.hasMore
                horizontalAlignment: Text.AlignHCenter
            }
            StatusButton {
                Layout.alignment: Qt.AlignHCenter
                text: qsTr("Back to most recent transaction")
                visible: !RootStore.historyTransactions.hasMore && transactionListRoot.contentHeight > transactionListRoot.height
                onClicked: transactionListRoot.positionViewAtBeginning()
            }
        }
    }
}