import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15

import FluentUI 1.0

Item {

    id:root

    property FluObject items
    property FluObject footerItems

    property int displayMode: width<=700 ? FluNavigationView.Minimal : FluNavigationView.Open

    property bool displaMinimalNav : false

    onDisplayModeChanged: {
        if(displayMode === FluNavigationView.Minimal){
            anim_navi.enabled = false
            displaMinimalNav = false
            timer_anim_enable.restart()
        }
    }

    Timer{
        id:timer_anim_enable
        interval: 150
        onTriggered: {
            anim_navi.enabled = true
        }
    }

    enum DisplayMode {
        Minimal,
        Open,
        Auto
    }

    property var window : {
        if(Window.window == null)
            return null
        return Window.window
    }

    Component{
        id:com_panel_item_separatorr
        FluDivider{
            width: nav_list.width
            height: 1
        }
    }

    Component{
        id:com_panel_item_header
        Item{
            height: 30
            width: nav_list.width
            FluText{
                text:model.title
                fontStyle: FluText.BodyStrong
                anchors{
                    bottom: parent.bottom
                    left:parent.left
                    leftMargin: 10
                }
            }
        }
    }

    Component{
        id:com_panel_item
        Item{
            height: 38
            width: nav_list.width

            Rectangle{
                radius: 4
                anchors{
                    top: parent.top
                    bottom: parent.bottom
                    left: parent.left
                    right: parent.right
                    topMargin: 2
                    bottomMargin: 2
                    leftMargin: 6
                    rightMargin: 6
                }
                MouseArea{
                    id:item_mouse
                    hoverEnabled: true
                    anchors.fill: parent
                    onClicked: {
                        if(type===0){
                            model.repTap()
                            if(nav_list.currentIndex !== position){
                                nav_list.currentIndex = position
                                model.tap()
                            }
                        }else{
                            model.tap()
                        }
                    }
                }
                color: {
                    if(FluTheme.isDark){
                        if((nav_list.currentIndex === position)&&type===0){
                            return "#2D2D2D"
                        }
                        if(item_mouse.containsMouse){
                            return "#292929"
                        }
                        return Qt.rgba(0,0,0,0)
                    }else{
                        if(item_mouse.containsMouse){
                            return Qt.rgba(0,0,0,0.03)
                        }
                        if(nav_list.currentIndex === position&&type===0){
                            return Qt.rgba(0,0,0,0.06)
                        }
                        return Qt.rgba(0,0,0,0)
                    }
                }

                FluText{
                    text:model.title
                    anchors{
                        verticalCenter: parent.verticalCenter
                        left:parent.left
                        leftMargin: 14
                    }
                }
            }
        }
    }


    Item {
        id:nav_app_bar
        width: parent.width
        height: 38

        RowLayout{
            height:parent.height
            spacing: 0
            FluIconButton{
                icon: FluentIcons.ChromeBack
                Layout.leftMargin: 5
                Layout.alignment: Qt.AlignVCenter
                disabled:  nav_swipe.depth === 1
                iconSize: 13
                onClicked: {
                    nav_swipe.pop()
                    nav_list.stackIndex.pop()
                    var index = nav_list.stackIndex[nav_list.stackIndex.length-1]
                    nav_list.enableStack = false
                    nav_list.currentIndex = index
                    nav_list.enableStack = true
                }
            }
            FluIconButton{
                icon: FluentIcons.GlobalNavButton
                Layout.leftMargin: 5
                iconSize: 15
                visible: displayMode === FluNavigationView.Minimal
                Layout.alignment: Qt.AlignVCenter
                onClicked: {
                    displaMinimalNav = !displaMinimalNav
                }
            }
        }


        RowLayout{
            anchors{
                right: parent.right
                rightMargin: 14
                verticalCenter: parent.verticalCenter
            }
            spacing: 5
            FluText{
                text:"夜间模式"
                fontStyle: FluText.Body
            }
            FluToggleSwitch{
                checked: FluTheme.isDark
                onClickFunc:function(){
                    FluTheme.isDark = !FluTheme.isDark
                }
            }
        }
    }

    Item{
        anchors{
            left: displayMode === FluNavigationView.Minimal ? parent.left : layout_list.right
            leftMargin: 2
            top: nav_app_bar.bottom
            right: parent.right
            rightMargin: 10
            bottom: parent.bottom
            bottomMargin: 20
        }

        StackView{
            id:nav_swipe
            anchors.fill: parent
            clip: true
            anchors.margins: 10
            popEnter : Transition{}
            popExit : Transition{}
            pushEnter : Transition{}
            pushExit : Transition{}
            replaceEnter : Transition{}
            replaceExit : Transition{}
        }
    }

    MouseArea{
        anchors.fill: parent
        enabled: (displayMode === FluNavigationView.Minimal && displaMinimalNav)
        onClicked: {
            displaMinimalNav = false
        }
    }

    Rectangle{
        id:layout_list
        width: 300
        anchors{
            top: nav_app_bar.bottom
            bottom: parent.bottom
        }
        x: {
            if(displayMode !== FluNavigationView.Minimal)
                return 0
            return (displayMode === FluNavigationView.Minimal && displaMinimalNav)  ? 0 : -width
        }
        Behavior on x{
            id:anim_navi
            NumberAnimation{
                duration: 150
            }
        }
        color: {
            if(displayMode === FluNavigationView.Minimal){
                return FluTheme.isDark ? Qt.rgba(61/255,61/255,61/255,1) : Qt.rgba(243/255,243/255,243/255,1)
            }
            if(window && window.active){
                return FluTheme.isDark ? Qt.rgba(32/255,32/255,32/255,1) : Qt.rgba(238/255,244/255,249/255,1)
            }
            return FluTheme.isDark ? Qt.rgba(32/255,32/255,32/255,1) : Qt.rgba(243/255,243/255,243/255,1)
        }
        Behavior on color{
            ColorAnimation {
                duration: 300
            }
        }
        ListView{
            id:nav_list
            property bool enableStack: true
            property var stackIndex: []
            clip: true
            anchors{
                top: parent.top
                left: parent.left
                right: parent.right
                bottom: layout_footer.top
            }
            currentIndex: -1
            onCurrentIndexChanged: {
                if(enableStack){
                    stackIndex.push(currentIndex)
                }
            }
            model:{
                if(items){
                    return items.children
                }
            }
            boundsBehavior: ListView.StopAtBounds
            delegate: Loader{
                property var model: modelData
                property var position: index
                property int type: 0
                sourceComponent: {
                    if(modelData instanceof FluPaneItem){
                        return com_panel_item
                    }
                    if(modelData instanceof FluPaneItemHeader){
                        return com_panel_item_header
                    }
                    if(modelData instanceof FluPaneItemSeparator){
                        return com_panel_item_separatorr
                    }
                }
            }
        }

        ListView{
            id:layout_footer
            width: layout_list.width
            height: childrenRect.height
            anchors.bottom: parent.bottom
            boundsBehavior: ListView.StopAtBounds
            model: {
                if(footerItems){
                    return footerItems.children
                }
            }
            currentIndex: -1
            delegate: Loader{
                property var model: modelData
                property var position: index
                property int type: 1
                sourceComponent: {
                    if(modelData instanceof FluPaneItem){
                        return com_panel_item
                    }
                    if(modelData instanceof FluPaneItemHeader){
                        return com_panel_item_header
                    }
                    if(modelData instanceof FluPaneItemSeparator){
                        return com_panel_item_separatorr
                    }
                }
            }
        }

    }



    function push(url){
        nav_swipe.push(url)
    }

    function setCurrentIndex(index){
        nav_list.currentIndex = index
    }

}