import QtQuick 2.13
import QtQuick.Controls 2.13
import QtQuick.Layouts 1.14

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

import shared.panels 1.0

ColumnLayout {
    id: root

    property var store
    property int type: ExtendedDropdownContent.Type.Tokens

    signal goBack()
    signal itemClicked(string key, string name, url iconSource)

    enum Type{
        Tokens,
        Collectibles
    }

    QtObject {
        id: d
        readonly property int filterItemsHeight: 36
        readonly property int filterPopupWidth: 233
        readonly property int filterPopupHeight: 205

        // Internal management properties
        property bool isFilterOptionVisible: false
        readonly property string thumbnailsViewState: "THUMBNAILS"
        readonly property string listView_depth1_State: "LIST-DEPTH1"
        readonly property string listView_depth2_State: "LIST-DEPTH2"
        property var currentModel: root.store.collectiblesModel
        property var currentSubitems
        property string currentItemName: ""
        property url currentItemSource: ""

        function reset() {
            d.currentItemName = ""
            d.currentItemSource = ""
            d.currentModel = root.store.collectiblesModel
            d.currentSubitems = undefined
            root.state = d.listView_depth1_State
        }
    }

    spacing: 0
    state: d.listView_depth1_State
    states: [
        State {
            name: d.thumbnailsViewState
            PropertyChanges {target: contentLoader; sourceComponent: thumbnailsView}
            PropertyChanges {target: d; isFilterOptionVisible: true}
            PropertyChanges {target: d; currentModel: d.currentSubitems}
        },
        State {
            name: d.listView_depth1_State
            PropertyChanges {target: contentLoader; sourceComponent: root.type === ExtendedDropdownContent.Type.Tokens ? tokensListView : collectiblesListView}
            PropertyChanges {target: d; isFilterOptionVisible: false}
            PropertyChanges {target: d; currentModel: root.type === ExtendedDropdownContent.Type.Tokens ? root.store.tokensModel : root.store.collectiblesModel}
        },
        State {
            name: d.listView_depth2_State
            PropertyChanges {target: contentLoader; sourceComponent: collectiblesListView}
            PropertyChanges {target: d; isFilterOptionVisible: true }
            PropertyChanges {target: d; currentModel: d.currentSubitems}
        }
    ]

    // Header
    RowLayout {
        Layout.fillWidth: true
        Layout.leftMargin: 16
        Layout.rightMargin: 8
        Layout.topMargin: 5

        StatusIconTextButton {
            Layout.alignment: Qt.AlignVCenter
            spacing: 0
            statusIcon: "next"
            icon.width: 12
            icon.height: 12
            iconRotation: 180
            text: qsTr("Back")
            onClicked: {
                if(root.state == d.listView_depth1_State) {
                    root.goBack()
                }
                else {
                    root.state = d.listView_depth1_State
                }
            }
        }

        // Just a filler to fit layout
        Item { Layout.fillWidth: true; height: filterButton.implicitHeight }

        StatusFlatRoundButton {
            id: filterButton
            implicitWidth: 32
            implicitHeight: 32
            visible: d.isFilterOptionVisible
            type: StatusFlatRoundButton.Type.Secondary
            icon.name: "filter"

            onClicked: {
                filterOptionsPopup.x = filterButton.x + filterButton.width - filterOptionsPopup.width
                filterOptionsPopup.y = filterButton.y + filterButton.height + 8
                filterOptionsPopup.open()
            }
        }

        // Filter options popup:
        StatusDropdown {
            id: filterOptionsPopup
            width: d.filterPopupWidth
            height: d.filterPopupHeight
            contentItem: ColumnLayout {
                anchors.fill: parent
                anchors.topMargin: 8
                anchors.bottomMargin: 8
                ListView {
                    Layout.fillWidth: true
                    Layout.preferredHeight: model.count * d.filterItemsHeight
                    model: ListModel {
                        ListElement { text: qsTr("Most viewed"); selected: true }
                        ListElement { text: qsTr("Newest first"); selected: false }
                        ListElement { text: qsTr("Oldest first"); selected: false }
                    }
                    delegate: StatusItemPicker {
                        width: ListView.view.width
                        height: d.filterItemsHeight
                        color: sensor1.containsMouse ? Theme.palette.baseColor4 : "transparent"
                        name: model.text
                        namePixelSize: 13
                        selectorType: StatusItemPicker.SelectorType.RadioButton
                        radioGroup: filterRadioBtnGroup
                        radioButtonSize: StatusRadioButton.Size.Small
                        selected: model.selected

                        MouseArea {
                            id: sensor1
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                            hoverEnabled: true
                            onClicked: {
                                selected = !selected
                                console.log("TODO: Clicked filter option: " + model.text)
                                filterOptionsPopup.close()
                            }
                        }
                    }

                    // Not visual element to control filter options
                    ButtonGroup {
                        id: filterRadioBtnGroup
                    }
                }

                Separator { Layout.fillWidth: true }

                ListView {
                    Layout.fillWidth: true
                    Layout.preferredHeight: model.count * d.filterItemsHeight
                    model: ListModel {
                        ListElement { key: "LIST"; text: qsTr("List"); selected: true }
                        ListElement { key: "THUMBNAILS"; text: qsTr("Thumbnails"); selected: false }
                    }
                    delegate:  StatusItemPicker {
                        width: ListView.view.width
                        height: d.filterItemsHeight
                        color: sensor2.containsMouse ? Theme.palette.baseColor4 : "transparent"
                        name: model.text
                        namePixelSize: 13
                        selectorType: StatusItemPicker.SelectorType.RadioButton
                        radioGroup: visualizationRadioBtnGroup
                        radioButtonSize: StatusRadioButton.Size.Small
                        selected: model.selected

                        MouseArea {
                            id: sensor2
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                            hoverEnabled: true
                            onClicked: {
                                selected = !selected
                                if(model.key === "LIST") {
                                    root.state = d.listView_depth2_State
                                }
                                else if(model.key === "THUMBNAILS") {
                                     root.state = d.thumbnailsViewState
                                }
                                filterOptionsPopup.close()
                            }
                        }
                    }

                    // Not visual element to control visualization options
                    ButtonGroup {
                        id: visualizationRadioBtnGroup
                    }
                }
            }
        }
    }

    // List elements content
    Loader {
        id: contentLoader
        Layout.preferredWidth: 289 // by design
        Layout.bottomMargin: 5
        Layout.preferredHeight: (item != null && typeof(item) !== 'undefined') ? item.implicitHeight : 0
    }

    Component {
        id: tokensListView

        ListDropdownContent {
            headerModel: ListModel {
                ListElement { key: "MINT"; icon: "add"; iconSize: 16; description: qsTr("Mint token"); rotation: 0; spacing: 8 }
                ListElement { key: "IMPORT"; icon: "invite-users"; iconSize: 16; description: qsTr("Import existing token"); rotation: 180; spacing: 8 }
            }
            model: d.currentModel
            onHeaderItemClicked: {
                if(key === "MINT") console.log("TODO: Mint token")
                else if(key === "IMPORT") console.log("TODO: Import existing token")
            }
            onItemClicked: root.itemClicked(key, shortName, iconSource)
        }
    }

    Component {
        id: collectiblesListView

        ListDropdownContent {
            isHeaderVisible: root.state === d.listView_depth1_State
            headerModel: ListModel {
               ListElement { key: "MINT"; icon: "add"; iconSize: 16; description: qsTr("Mint collectible"); rotation: 0; spacing: 8 }
            }
            model: d.currentModel
            onHeaderItemClicked: {
                if(key === "MINT") console.log("TODO: Mint collectible")
            }
            onItemClicked: {
                if(subItems && root.state === d.listView_depth1_State) {
                    // One deep navigation
                    d.currentSubitems = subItems
                    d.currentItemName = name
                    d.currentItemSource = iconSource
                    root.state = d.listView_depth2_State
                }
                else {
                    d.reset()
                    root.itemClicked(key, name, iconSource)
                }
            }
        }
    }

    Component {
        id: thumbnailsView

        ThumbnailsDropdownContent {
            title: d.currentItemName
            titleImage: d.currentItemSource
            model: d.currentModel
            onItemClicked: {
                d.reset()
                root.itemClicked(key, name, iconSource)
            }
        }
    }
}