import QtQuick
import QtQuick.Controls as QQC2
import QtQuick.Layouts
import org.kde.kirigami as Kirigami
import org.kde.alakarte

RowLayout {
    id: root

    spacing: uiMode === Config.Couch ? Kirigami.Units.largeSpacing * 1.25 : Kirigami.Units.largeSpacing

    property int uiMode: Config.Auto
    property int activeInput: InputManager.KeyboardMouse

    readonly property bool useGamepadHints: {
        if (!GamepadManager.connected) return false
        if (uiMode === Config.Couch) {
            if (activeInput === InputManager.KeyboardMouse && InputManager.hasSeenKeyboardMouse) return false
            return true
        }
        return activeInput === InputManager.Gamepad
    }
    readonly property int style: GamepadManager.controllerStyle
    property string context: "library"

    function iconBasePath() {
        if (!useGamepadHints) return ""
        switch (style) {
        case GamepadManager.PlayStationController:
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/playstation/"
        case GamepadManager.XboxController:
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/xbox/"
        case GamepadManager.NintendoController:
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/nintendo/"
        default:
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/generic/"
        }
    }

    function iconForButton(buttonLabel) {
        if (!useGamepadHints) return ""
        const base = iconBasePath()
        if (style === GamepadManager.PlayStationController) {
            if (buttonLabel === "Cross") return base + "cross.svg"
            if (buttonLabel === "Circle") return base + "circle.svg"
            if (buttonLabel === "Square") return base + "square.svg"
            if (buttonLabel === "Triangle") return base + "triangle.svg"
        }
        if (style === GamepadManager.XboxController || style === GamepadManager.NintendoController) {
            return base + buttonLabel.toLowerCase() + ".svg"
        }
        if (buttonLabel === "A") return base + "south.svg"
        if (buttonLabel === "B") return base + "east.svg"
        if (buttonLabel === "X") return base + "west.svg"
        if (buttonLabel === "Y") return base + "north.svg"
        return base + "south.svg"
    }

    function iconForAux(action) {
        if (!useGamepadHints) return ""

        if (action === "dpad") {
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/generic/dpad.svg"
        }
        if (action === "lb") {
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/generic/lb.svg"
        }
        if (action === "rb") {
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/generic/rb.svg"
        }
        if (action === "menu") {
            if (style === GamepadManager.PlayStationController) {
                return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/playstation/options.svg"
            }
            if (style === GamepadManager.NintendoController) {
                return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/nintendo/plus.svg"
            }
            if (style === GamepadManager.XboxController) {
                return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/xbox/menu.svg"
            }
            return "qrc:/qt/qml/org/kde/alakarte/qml/icons/gamepad/generic/menu.svg"
        }

        return ""
    }

    function keyboardLabel(action) {
        if (root.context === "confirm" || root.context === "confirm_remove") {
            switch (action) {
            case "navigate": return "Tab"
            case "confirm": return "Enter"
            case "back": return "Esc"
            case "menu": return ""
            default: return ""
            }
        }

        if (root.context === "library") {
            switch (action) {
            case "navigate": return i18n("Arrows")
            case "confirm": return "Space"
            case "back": return ""
            case "details": return "Enter"
            case "search": return "Ctrl+F"
            case "lb": return "Ctrl+PgUp"
            case "rb": return "Ctrl+PgDown"
            case "menu": return "Ctrl+,"
            default: return ""
            }
        }

        if (root.context === "edit") {
            switch (action) {
            case "navigate": return "Tab"
            case "confirm": return "Enter"
            case "back": return "Esc"
            default: return ""
            }
        }

        if (root.context === "details") {
            switch (action) {
            case "navigate": return "Tab"
            case "confirm": return "Enter"
            case "back": return "Esc"
            case "details": return "F"
            case "search": return "E"
            case "menu": return "Ctrl+,"
            default: return ""
            }
        }

        if (root.context === "sidebar") {
            switch (action) {
            case "navigate": return i18n("Arrows/Tab")
            case "confirm": return "Enter"
            case "back": return "Esc"
            case "lb": return "Ctrl+PgUp"
            case "rb": return "Ctrl+PgDown"
            case "menu": return "Ctrl+,"
            default: return ""
            }
        }

        if (root.context === "settings") {
            switch (action) {
            case "navigate": return "Tab"
            case "confirm": return "Enter"
            case "back": return "Esc"
            case "menu": return "Ctrl+,"
            default: return ""
            }
        }

        if (root.context === "settings" || root.context === "import" || root.context === "sidebar" || root.context === "about") {
            switch (action) {
            case "navigate": return "Tab"
            case "confirm": return "Enter"
            case "back": return "Esc"
            default: return ""
            }
        }

        return ""
    }

    function actionLabel(action) {
        if (root.context === "confirm" || root.context === "confirm_remove") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Cancel")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : ""
            default: return ""
            }
        }

        if (root.context === "library") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Play")
            case "back": return ""
            case "details": return i18n("Details")
            case "search": return i18n("Search")
            case "lb": return i18n("Prev Source")
            case "rb": return i18n("Next Source")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : i18n("Settings")
            default: return ""
            }
        }

        if (root.context === "settings") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : i18n("Close")
            default: return ""
            }
        }

        if (root.context === "edit") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : ""
            default: return ""
            }
        }

        if (root.context === "details") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "details": return i18n("Favorite")
            case "search": return i18n("Edit")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : i18n("Settings")
            default: return ""
            }
        }

        if (root.context === "sidebar") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "lb": return i18n("Prev Source")
            case "rb": return i18n("Next Source")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Close") : i18n("Settings")
            default: return ""
            }
        }

        if (root.context === "settings" || root.context === "import" || root.context === "sidebar") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : ""
            default: return ""
            }
        }

        if (root.context === "about") {
            switch (action) {
            case "navigate": return (useGamepadHints || keyboardLabel("navigate") !== "") ? i18n("Navigate") : ""
            case "confirm": return i18n("Select")
            case "back": return i18n("Back")
            case "menu": return (useGamepadHints && uiMode === Config.Couch) ? i18n("Menu") : ""
            default: return ""
            }
        }

        return ""
    }

    component HintItem: RowLayout {
        required property string action
        property string label: ""
        property string iconSource: ""
        property string keyLabel: ""

        visible: {
            if (root.useGamepadHints) return iconSource != "" && label.length > 0
            return keyLabel.length > 0 && label.length > 0
        }

        spacing: Kirigami.Units.smallSpacing

        Rectangle {
            id: buttonFrame
            radius: Kirigami.Units.smallSpacing
            color: Qt.rgba(Kirigami.Theme.textColor.r, Kirigami.Theme.textColor.g, Kirigami.Theme.textColor.b, 0.08)
            border.width: 1
            border.color: Qt.rgba(Kirigami.Theme.textColor.r, Kirigami.Theme.textColor.g, Kirigami.Theme.textColor.b, 0.2)

            Layout.preferredHeight: uiMode === Config.Couch ? Kirigami.Units.gridUnit * 1.8 : Kirigami.Units.gridUnit * 1.4
            Layout.preferredWidth: useGamepadHints
                ? Layout.preferredHeight
                : Math.max(keyText.implicitWidth + Kirigami.Units.mediumSpacing * 2, Layout.preferredHeight)

            Image {
                id: buttonIcon
                anchors.centerIn: parent
                width: parent.height * 0.7
                height: width
                source: parent.parent.iconSource
                visible: useGamepadHints && source != ""
                sourceSize: Qt.size(width * 2, height * 2)
            }

            QQC2.Label {
                id: keyText
                anchors.centerIn: parent
                text: parent.parent.keyLabel
                font.bold: true
                font.pointSize: uiMode === Config.Couch ? Kirigami.Theme.defaultFont.pointSize : Kirigami.Theme.smallFont.pointSize
                color: Kirigami.Theme.textColor
                visible: !useGamepadHints
            }
        }

        QQC2.Label {
            text: parent.label
            color: Kirigami.Theme.textColor
            font.pointSize: uiMode === Config.Couch ? Kirigami.Theme.defaultFont.pointSize : Kirigami.Theme.smallFont.pointSize
            Layout.alignment: Qt.AlignVCenter
        }
    }

    HintItem {
        action: "navigate"
        label: actionLabel("navigate")
        iconSource: iconForAux("dpad")
        keyLabel: keyboardLabel("navigate")
    }

    HintItem {
        action: "confirm"
        label: actionLabel("confirm")
        iconSource: iconForButton(GamepadManager.confirmButtonLabel)
        keyLabel: keyboardLabel("confirm")
    }

    HintItem {
        action: "back"
        label: actionLabel("back")
        iconSource: iconForButton(GamepadManager.backButtonLabel)
        keyLabel: keyboardLabel("back")
    }

    HintItem {
        action: "details"
        label: actionLabel("details")
        iconSource: iconForButton(GamepadManager.detailsButtonLabel)
        keyLabel: keyboardLabel("details")
    }

    HintItem {
        action: "search"
        label: actionLabel("search")
        iconSource: iconForButton(GamepadManager.searchButtonLabel)
        keyLabel: keyboardLabel("search")
    }

    HintItem {
        action: "lb"
        label: actionLabel("lb")
        iconSource: (root.context === "library" || root.context === "sidebar") ? iconForAux("lb") : ""
        keyLabel: keyboardLabel("lb")
    }

    HintItem {
        action: "rb"
        label: actionLabel("rb")
        iconSource: (root.context === "library" || root.context === "sidebar") ? iconForAux("rb") : ""
        keyLabel: keyboardLabel("rb")
    }

    HintItem {
        action: "menu"
        label: actionLabel("menu")
        iconSource: (useGamepadHints && uiMode === Config.Couch)
            ? iconForAux("menu")
            : ((root.context === "library" || root.context === "details" || root.context === "sidebar" || root.context === "settings") ? iconForAux("menu") : "")
        keyLabel: keyboardLabel("menu")
    }
}