const colorModule = require("color");

/**
 * Turn the main color of a line into a color suitable for using as a border.
 * @param {string} mainColor Original color.
 * @returns {string} Hexadecimal representation of the border color.
 */
const makeBorderColor = mainColor => {
    const hsl = colorModule(mainColor).hsl();

    hsl.color = Math.max(0, hsl.color[2] -= 20);
    return hsl.hex();
};

exports.makeBorderColor = makeBorderColor;

/**
 * Turn the main color of a line into a color suitable for using as a border.
 * @param {string} mainColor Original color.
 * @returns {string} Hexadecimal representation of the border color.
 */
const makeCourseColor = mainColor => {
    const hsl = colorModule(mainColor).hsl();

    hsl.color = Math.max(0, hsl.color[2] += 10);
    return hsl.hex();
};

exports.makeCourseColor = makeCourseColor;

const sizes = {
    segmentOuter: 8,
    segmentInner: 6,
    stopRadius: 6,
    stopBorder: 1.5,
    courseSize: 15,
    courseOuterBorder: 13,
    courseBorder: 10,
    courseInnerBorder: 7
};

exports.sizes = sizes;