import { Palette, Slider, HorizontalBox, Button, LineEdit } from "std-widgets.slint";

export component ColourSlider inherits VerticalLayout {
    spacing: 12px;
    in-out property <bool> enabled;
    property <string> hex: "#FF0000";
    in-out property <float> c1value <=> c1.value;
    in-out property <float> c2value <=> c2.value;
    in-out property <float> c3value <=> c3.value;
    property <color> base_colour: Colors.red;
    in-out property <color> final_colour: Colors.red;
    in-out property <brush> colourbox: final_colour;
    callback hex_to_colour(string) -> color;
    // required
    callback set_hex_from_colour(color) -> string;
    callback released();

    property <[color]> base_colours: [
        hsv(0, 1, 1),
        hsv(10, 1, 1),
        hsv(20, 1, 1),
        hsv(30, 1, 1),
        hsv(40, 1, 1),
        hsv(50, 1, 1),
        hsv(60, 1, 1),
        hsv(70, 1, 1),
        hsv(80, 1, 1),
        hsv(90, 1, 1),
        hsv(100, 1, 1),
        hsv(110, 1, 1),
        hsv(120, 1, 1),
        hsv(130, 1, 1),
        hsv(140, 1, 1),
        hsv(150, 1, 1),
        hsv(160, 1, 1),
        hsv(170, 1, 1),
        hsv(180, 1, 1),
        hsv(190, 1, 1),
        hsv(200, 1, 1),
        hsv(210, 1, 1),
        hsv(220, 1, 1),
        hsv(230, 1, 1),
        hsv(240, 1, 1),
        hsv(250, 1, 1),
        hsv(260, 1, 1),
        hsv(270, 1, 1),
        hsv(280, 1, 1),
        hsv(290, 1, 1),
        hsv(300, 1, 1),
        hsv(310, 1, 1),
        hsv(320, 1, 1),
        hsv(330, 1, 1),
        hsv(340, 1, 1),
        hsv(350, 1, 1),
        hsv(360, 1, 1),
    ];
    property <[color]> base_saturation: [
        hsv(base_colour.to-hsv().hue, 1, 1),
        hsv(base_colour.to-hsv().hue, 0.9, 1),
        hsv(base_colour.to-hsv().hue, 0.8, 1),
        hsv(base_colour.to-hsv().hue, 0.7, 1),
        hsv(base_colour.to-hsv().hue, 0.6, 1),
        hsv(base_colour.to-hsv().hue, 0.5, 1),
        hsv(base_colour.to-hsv().hue, 0.4, 1),
        hsv(base_colour.to-hsv().hue, 0.3, 1),
        hsv(base_colour.to-hsv().hue, 0.2, 1),
        hsv(base_colour.to-hsv().hue, 0.1, 1),
        hsv(base_colour.to-hsv().hue, 0, 1),
    ];
    property <[color]> base_value: [
        hsv(base_colour.to-hsv().hue, 1, 1),
        hsv(base_colour.to-hsv().hue, 1, 0.9),
        hsv(base_colour.to-hsv().hue, 1, 0.8),
        hsv(base_colour.to-hsv().hue, 1, 0.7),
        hsv(base_colour.to-hsv().hue, 1, 0.6),
        hsv(base_colour.to-hsv().hue, 1, 0.5),
        hsv(base_colour.to-hsv().hue, 1, 0.4),
        hsv(base_colour.to-hsv().hue, 1, 0.3),
        hsv(base_colour.to-hsv().hue, 1, 0.2),
        hsv(base_colour.to-hsv().hue, 1, 0.1),
        hsv(base_colour.to-hsv().hue, 1, 0),
    ];

    function set_base_colour() {
        root.base_colour = hsv(c1.value / base_colours.length * 360, 1, 1);
        root.final_colour = hsv(base_colour.to-hsv().hue, ((base_saturation.length - c2.value) / base_saturation.length), ((base_value.length - c3.value) / base_value.length));
        root.colourbox = root.final_colour;
    }

    callback external_colour_change();

    external_colour_change => {
        if (root.final_colour.to-hsv().hue < 0) {
            c1.value = root.base_colours.length * (root.final_colour.to-hsv().hue + 360) / 360;
        } else {
            c1.value = root.base_colours.length * root.final_colour.to-hsv().hue / 360;
        }
        // c1.value = root.base_colours.length * 360 / root.final_colour.to-hsv().hue;
        c2.value = root.base_saturation.length - root.base_saturation.length * root.final_colour.to-hsv().saturation;
        c3.value = root.base_value.length - root.base_value.length * root.final_colour.to-hsv().value;
        root.set_base_colour();
        hex = set_hex_from_colour(final_colour);
    }
    Rectangle {
        height: 28px;
        border-width: 1px;
        border-radius: 3px;
        border-color: Palette.border;
        // 13 colours
        background: !root.enabled ? Palette.alternate-background : @linear-gradient(90deg, base_colours[0], base_colours[1], base_colours[2], base_colours[3], base_colours[4], base_colours[5], base_colours[6], base_colours[7], base_colours[8], base_colours[9], base_colours[10], base_colours[11], base_colours[12], base_colours[13], base_colours[14], base_colours[15], base_colours[16], base_colours[17], base_colours[18], base_colours[19], base_colours[20], base_colours[21], base_colours[22], base_colours[23], base_colours[24], base_colours[25], base_colours[26], base_colours[27], base_colours[28], base_colours[29], base_colours[30], base_colours[31], base_colours[32], base_colours[33], base_colours[34], base_colours[35]);
        clip: true;
        c1 := Slider {
            enabled <=> root.enabled;
            width: parent.width;
            height: parent.height;
            minimum: 0;
            maximum: root.base_colours.length;
            // One less than the array length
            changed => {
                set_base_colour();
                hex = set_hex_from_colour(final_colour);
            }
            released => {
                root.released();
            }
        }
    }

    Rectangle {
        height: 28px;
        border-width: 1px;
        border-radius: 3px;
        border-color: Palette.border;
        // 11 colours
            background: !root.enabled ? Palette.alternate-background : @linear-gradient(90deg, base_saturation[0], base_saturation[1], base_saturation[2], base_saturation[3], base_saturation[4], base_saturation[5], base_saturation[6], base_saturation[7], base_saturation[8], base_saturation[9], base_saturation[10]);
        clip: true;
        c2 := Slider {
            enabled <=> root.enabled;
            width: parent.width;
            height: parent.height;
            minimum: 0;
            maximum: root.base_saturation.length;
            changed => {
                set_base_colour();
                hex = set_hex_from_colour(final_colour);
            }
            released => {
                root.released();
            }
        }
    }

    Rectangle {
        height: 28px;
        border-width: 1px;
        border-radius: 3px;
        border-color: Palette.border;
        // 11 colours
        background: !root.enabled ? Palette.alternate-background : @linear-gradient(90deg, base_value[0], base_value[1], base_value[2], base_value[3], base_value[4], base_value[5], base_value[6], base_value[7], base_value[8], base_value[9], base_value[10]);
        clip: true;
        c3 := Slider {
            enabled <=> root.enabled;
            width: parent.width;
            height: parent.height;
            minimum: 0;
            maximum: root.base_value.length;
            changed => {
                set_base_colour();
                hex = set_hex_from_colour(final_colour);
            }
            released => {
                root.released();
            }
        }
    }

    HorizontalLayout {
        LineEdit {
            enabled <=> root.enabled;
            // width: 50%;
            text <=> root.hex;
            accepted => {
                base_colour = hex_to_colour(self.text);
                root.colourbox = base_colour;
                root.final_colour = base_colour;
                root.colourbox = root.final_colour;
                root.external_colour_change();
                root.released();
            }
        }

        Rectangle {
            width: self.height;
            border-width: 1px;
            border-radius: 3px;
            border-color: Palette.border;
            background <=> root.colourbox;
        }
    }
}