import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.3
import QtQuick.Window 2.15
import StandardOfIron 1.0

Item {
    id: root

    property bool gameStarted: false

    signal openSkirmish()
    signal openCampaign()
    signal openObjectives()
    signal openSettings()
    signal loadSave()
    signal saveGame()
    signal exitRequested()

    anchors.fill: parent
    z: 10
    focus: true
    Keys.onPressed: function(event) {
        if (event.key === Qt.Key_Down) {
            var newIndex = container.selectedIndex + 1;
            while (newIndex < menuModel.count) {
                var m = menuModel.get(newIndex);
                if (!m.requiresGame || root.gameStarted) {
                    container.selectedIndex = newIndex;
                    break;
                }
                newIndex++;
            }
            event.accepted = true;
        } else if (event.key === Qt.Key_Up) {
            var newIndex = container.selectedIndex - 1;
            while (newIndex >= 0) {
                var m = menuModel.get(newIndex);
                if (!m.requiresGame || root.gameStarted) {
                    container.selectedIndex = newIndex;
                    break;
                }
                newIndex--;
            }
            event.accepted = true;
        } else if (event.key === Qt.Key_Return || event.key === Qt.Key_Enter) {
            var m = menuModel.get(container.selectedIndex);
            if (m.requiresGame && !root.gameStarted) {
                event.accepted = true;
                return ;
            }
            if (m.idStr === "skirmish")
                root.openSkirmish();
            else if (m.idStr === "campaign")
                root.openCampaign();
            else if (m.idStr === "objectives")
                root.openObjectives();
            else if (m.idStr === "save")
                root.saveGame();
            else if (m.idStr === "load")
                root.loadSave();
            else if (m.idStr === "settings")
                root.openSettings();
            else if (m.idStr === "exit")
                root.exitRequested();
            event.accepted = true;
        } else if (event.key === Qt.Key_Escape) {
            if (typeof mainWindow !== 'undefined' && mainWindow.menuVisible && mainWindow.gameStarted) {
                mainWindow.menuVisible = false;
                event.accepted = true;
            }
        }
    }

    Rectangle {
        anchors.fill: parent
        color: Theme.dim
    }

    Rectangle {
        id: container

        property int selectedIndex: 0

        width: Math.min(parent.width * 0.78, 1100)
        height: Math.min(parent.height * 0.78, 700)
        anchors.centerIn: parent
        radius: Theme.radiusPanel
        color: Theme.panelBase
        border.color: Theme.panelBr
        border.width: 1
        opacity: 0.98
        clip: true

        Item {
            id: contentArea

            anchors.top: parent.top
            anchors.left: parent.left
            anchors.right: parent.right
            anchors.bottom: footerRow.top
            anchors.margins: Theme.spacingXLarge

            GridLayout {
                id: grid

                anchors.fill: parent
                rowSpacing: Theme.spacingMedium
                columnSpacing: 18
                columns: parent.width > 900 ? 2 : 1

                ColumnLayout {
                    Layout.preferredWidth: parent.width > 900 ? parent.width * 0.45 : parent.width
                    spacing: Theme.spacingLarge

                    ColumnLayout {
                        spacing: Theme.spacingSmall

                        Label {
                            text: qsTr("STANDARD OF IRON")
                            color: Theme.textMain
                            font.pointSize: Theme.fontSizeHero
                            font.bold: true
                            horizontalAlignment: Text.AlignLeft
                            Layout.fillWidth: true
                            elide: Label.ElideRight
                        }

                        Label {
                            text: qsTr("A tiny but ambitious RTS")
                            color: Theme.textSub
                            font.pointSize: Theme.fontSizeMedium
                            horizontalAlignment: Text.AlignLeft
                            Layout.fillWidth: true
                            elide: Label.ElideRight
                        }

                    }

                    ListModel {
                        id: menuModel

                        ListElement {
                            idStr: "skirmish"
                            title: QT_TR_NOOP("Play — Skirmish")
                            subtitle: QT_TR_NOOP("Select a map and start")
                            requiresGame: false
                        }

                        ListElement {
                            idStr: "campaign"
                            title: QT_TR_NOOP("Play — Campaign")
                            subtitle: QT_TR_NOOP("Story missions and battles")
                            requiresGame: false
                        }

                        ListElement {
                            idStr: "objectives"
                            title: QT_TR_NOOP("Objectives")
                            subtitle: QT_TR_NOOP("View current mission objectives")
                            requiresGame: true
                        }

                        ListElement {
                            idStr: "save"
                            title: QT_TR_NOOP("Save Game")
                            subtitle: QT_TR_NOOP("Save your current progress")
                            requiresGame: true
                        }

                        ListElement {
                            idStr: "load"
                            title: QT_TR_NOOP("Load Game")
                            subtitle: QT_TR_NOOP("Resume a previous game")
                            requiresGame: false
                        }

                        ListElement {
                            idStr: "settings"
                            title: QT_TR_NOOP("Settings")
                            subtitle: QT_TR_NOOP("Adjust graphics & controls")
                            requiresGame: false
                        }

                        ListElement {
                            idStr: "exit"
                            title: QT_TR_NOOP("Exit")
                            subtitle: QT_TR_NOOP("Quit the game")
                            requiresGame: false
                        }

                    }

                    Repeater {
                        model: menuModel

                        delegate: Item {
                            id: menuItem

                            property int idx: index
                            property bool itemEnabled: !model.requiresGame || root.gameStarted

                            Layout.fillWidth: true
                            Layout.preferredHeight: container.width > 900 ? 64 : 56

                            Rectangle {
                                anchors.fill: parent
                                radius: Theme.radiusLarge
                                clip: true
                                color: container.selectedIndex === idx ? Theme.selectedBg : menuItemMouse.containsPress ? Theme.hoverBg : Qt.rgba(0, 0, 0, 0)
                                border.width: 1
                                border.color: container.selectedIndex === idx ? Theme.selectedBr : Theme.cardBorder
                                opacity: itemEnabled ? 1 : 0.4

                                RowLayout {
                                    anchors.fill: parent
                                    anchors.margins: Theme.spacingSmall
                                    spacing: Theme.spacingMedium

                                    Item {
                                        Layout.fillWidth: true
                                        Layout.preferredWidth: 1
                                    }

                                    ColumnLayout {
                                        Layout.fillWidth: true
                                        spacing: Theme.spacingTiny

                                        Text {
                                            text: qsTr(model.title)
                                            Layout.fillWidth: true
                                            elide: Text.ElideRight
                                            color: itemEnabled ? (container.selectedIndex === idx ? Theme.textMain : Theme.textBright) : Theme.textDim
                                            font.pointSize: Theme.fontSizeLarge
                                            font.bold: container.selectedIndex === idx
                                        }

                                        Text {
                                            text: qsTr(model.subtitle)
                                            Layout.fillWidth: true
                                            elide: Text.ElideRight
                                            color: itemEnabled ? (container.selectedIndex === idx ? Theme.accentBright : Theme.textSubLite) : Theme.textHint
                                            font.pointSize: Theme.fontSizeSmall
                                        }

                                    }

                                    Text {
                                        text: "›"
                                        font.pointSize: Theme.fontSizeTitle
                                        color: itemEnabled ? (container.selectedIndex === idx ? Theme.textMain : Theme.textHint) : Theme.textDim
                                        opacity: itemEnabled ? 1 : 0.3
                                    }

                                }

                                Behavior on color {
                                    ColorAnimation {
                                        duration: Theme.animNormal
                                    }

                                }

                                Behavior on border.color {
                                    ColorAnimation {
                                        duration: Theme.animNormal
                                    }

                                }

                            }

                            MouseArea {
                                id: menuItemMouse

                                anchors.fill: parent
                                hoverEnabled: true
                                acceptedButtons: Qt.LeftButton
                                cursorShape: itemEnabled ? Qt.PointingHandCursor : Qt.ForbiddenCursor
                                onEntered: {
                                    if (itemEnabled)
                                        container.selectedIndex = idx;

                                }
                                onClicked: {
                                    if (!itemEnabled)
                                        return ;

                                    if (model.idStr === "skirmish")
                                        root.openSkirmish();
                                    else if (model.idStr === "campaign")
                                        root.openCampaign();
                                    else if (model.idStr === "objectives")
                                        root.openObjectives();
                                    else if (model.idStr === "save")
                                        root.saveGame();
                                    else if (model.idStr === "load")
                                        root.loadSave();
                                    else if (model.idStr === "settings")
                                        root.openSettings();
                                    else if (model.idStr === "exit")
                                        root.exitRequested();
                                }
                            }

                        }

                    }

                }

                Rectangle {
                    color: Qt.rgba(0, 0, 0, 0)
                    radius: Theme.radiusMedium
                    Layout.preferredWidth: parent.width > 900 ? parent.width * 0.45 : parent.width

                    ColumnLayout {
                        anchors.fill: parent
                        anchors.margins: Theme.spacingSmall
                        spacing: Theme.spacingMedium

                        Rectangle {
                            id: promo

                            color: Theme.cardBase
                            radius: Theme.radiusLarge
                            border.color: Theme.border
                            border.width: 1
                            Layout.preferredHeight: 260
                            clip: true

                            ColumnLayout {
                                anchors.fill: parent
                                anchors.margins: Theme.spacingMedium
                                spacing: Theme.spacingSmall

                                Label {
                                    text: qsTr("Featured")
                                    color: Theme.accent
                                    font.pointSize: Theme.fontSizeMedium
                                    Layout.fillWidth: true
                                    elide: Label.ElideRight
                                }

                                Label {
                                    text: qsTr("Skirmish Mode")
                                    color: Theme.textMain
                                    font.pointSize: Theme.fontSizeTitle
                                    font.bold: true
                                    Layout.fillWidth: true
                                    elide: Label.ElideRight
                                }

                                Text {
                                    text: qsTr("Pick a map, adjust your forces and jump into battle. Modern controls and responsive UI.")
                                    color: Theme.textSubLite
                                    wrapMode: Text.WordWrap
                                    maximumLineCount: 3
                                    elide: Text.ElideRight
                                    Layout.fillWidth: true
                                }

                            }

                        }

                        Rectangle {
                            color: Theme.cardBase
                            radius: Theme.radiusLarge
                            border.color: Theme.border
                            border.width: 1
                            Layout.preferredHeight: 120
                            clip: true

                            ColumnLayout {
                                anchors.fill: parent
                                anchors.margins: Theme.spacingSmall
                                spacing: Theme.spacingSmall

                                Label {
                                    text: qsTr("Tips")
                                    color: Theme.accent
                                    font.pointSize: Theme.fontSizeMedium
                                    Layout.fillWidth: true
                                    elide: Label.ElideRight
                                }

                                Text {
                                    text: qsTr("Hover menu items or use Up/Down and Enter to navigate. Play opens map selection.")
                                    color: Theme.textSubLite
                                    wrapMode: Text.WordWrap
                                    maximumLineCount: 3
                                    elide: Text.ElideRight
                                    Layout.fillWidth: true
                                }

                            }

                        }

                    }

                }

            }

        }

        RowLayout {
            id: footerRow

            anchors.left: parent.left
            anchors.right: parent.right
            anchors.bottom: parent.bottom
            anchors.margins: Theme.spacingXLarge
            spacing: Theme.spacingSmall

            Label {
                text: qsTr("v0.9 — prototype")
                color: Theme.textDim
                font.pointSize: Theme.fontSizeSmall
            }

            Item {
                Layout.fillWidth: true
            }

            Label {
                text: Qt.formatDateTime(new Date(), "yyyy-MM-dd")
                color: Theme.textHint
                font.pointSize: Theme.fontSizeSmall
                elide: Label.ElideRight
            }

        }

    }

}