// Copyright © SixtyFPS GmbH <info@slint-ui.com>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial

import { md } from "md.slint";

component SpinBoxButton inherits Rectangle {
    callback clicked <=> touch.clicked;

    in-out property<bool> pressed: self.enabled && touch.pressed;
    in-out property<bool> enabled <=> touch.enabled;
    in-out property<float> icon-opacity: 1;
    in-out property<brush> icon-fill: md.sys.color.on-primary;

    width: root.height;

    container := Rectangle {
        width: 100%;
        height: 100%;
        border-radius: max(self.width, self.height) / 2;
        background: md.sys.color.primary;
    }

    state-layer := Rectangle {
        x:0;y:0;
        opacity: 0;
        width: container.width;
        height: container.height;
        border-radius: container.border-radius;
        background: md.sys.color.on-primary;
        animate opacity { duration: 250ms; easing: ease; }
     }

    Rectangle {
        width: 100%;
        height: 100%;
        @children
    }

    touch := TouchArea { }

    states [
        disabled when !root.enabled : {
            container.background: md.sys.color.on-surface;
            container.opacity: 0.12;
            icon-opacity: 0.38;
            icon-fill: md.sys.color.on-surface;
        }
        pressed when touch.pressed : {
            state-layer.opacity: 0.12;
        }
        hover when touch.has-hover : {
            state-layer.opacity: 0.08;
        }
    ]
}

// Increment and decrement a value in the given range.
export component SpinBox {
    in-out property <int> value;
    in property <int> minimum;
    in property <int> maximum: 100;
    in property <bool> enabled <=> fs.enabled;
    out property <bool> has-focus <=> fs.has-focus;
    forward-focus: fs;

    horizontal-stretch: 1;
    vertical-stretch: 0;
    min-width: 60px;
    height: 56px;

    accessible-role: spinbox;
    accessible-value: root.value;
    accessible-value-minimum: root.minimum;
    accessible-value-maximum: root.maximum;
    accessible-value-step: (root.maximum - root.minimum) / 100;

    fs := FocusScope {
        key-pressed(event) => {
            if (root.enabled && event.text == Key.UpArrow && root.value < root.maximum) {
                root.value += 1;
                accept
            } else if (root.enabled && event.text == Key.DownArrow && root.value > root.minimum) {
                root.value -= 1;
                accept
            } else {
                reject
            }
        }
    }

    container := Rectangle {
        width: 100%;
        height: 100%;
        border-radius: 4px;
        border-width: 1px;
        border-color: md.sys.color.outline;
    }

    layout := HorizontalLayout {
        padding-top: 8px;
        padding-bottom: 8px;
        padding-left: 16px;
        padding-right: 12px;
        spacing: 16px;

        label := Text {
            text: root.value;
            height: 100%;
            color: md.sys.color.on-surface;
            vertical-alignment: center;
            // FIXME after Roboto font can be loaded
            //font-family: md.sys.typescale.body-large.font;
            font-size: md.sys.typescale.body-large.size;
            font-weight: md.sys.typescale.body-large.weight;
        }

        VerticalLayout {
            spacing: 4px;
            SpinBoxButton {
                enabled: root.enabled;

                Path {
                    x: (parent.width - self.width) / 2;
                    y: (parent.height - self.height) / 2;
                    width: 44%;
                    height: 44%;
                    commands: "M14.15 30.75 12 28.6l12-12 12 11.95-2.15 2.15L24 20.85Z";
                    opacity: parent.icon-opacity;
                    fill: parent.icon-fill;
                }

                clicked => {
                    if (root.value < root.maximum) {
                        root.value += 1;
                    }

                    root.focus();
                }
            }

            SpinBoxButton {
                enabled: root.enabled;

                Path {
                    x: (parent.width - self.width) / 2;
                    y: (parent.height - self.height) / 2;
                    width: 44%;
                    height: 44%;
                    commands: "m24 30.75-12-12 2.15-2.15L24 26.5l9.85-9.85L36 18.8Z";
                    opacity: parent.icon-opacity;
                    fill: parent.icon-fill;
                }

                clicked => {
                    if (root.value > root.minimum) {
                        root.value -= 1;
                    }


                    root.focus();
                }
            }
        }
    }

    states [
        disabled when !root.enabled : {
            container.border-color: md.sys.color.on-surface;
            container.opacity: 0.38;
            label.opacity: 0.38;
        }
        focused when root.has-focus : {
            container.border-width: 2px;
            container.border-color: md.sys.color.primary;
            label.color: md.sys.color.primary;
        }
    ]
}