index.js

const clc = require('cli-color');
const terminalLink = require('terminal-link');
const themes = require('./themes.js');
const {
    paddToFitWidth,
    getBgColor,
    getTextColor,
    format,
} = require('./util.js');

const DEFAULT_OPTIONS = {
    messageBg: 'blue',
    labelBg: 'blackBright',
    labelColor: 'white',
    messageColor: 'white',
    messageStyle: null,
    messageWidth: null,
    labelStyle: null,
    labelWidth: null,
    link: null,
    forceLink: false,
    theme: 'blue',
    swapTheme: false,
    ...themes['blue'],
};

/**
 * Main function to create badge. 
 * 
 * @example
 * ```js
 * badge('label', 'value', { theme: 'green' });
 * ```
 */
const makeBadge = (label = '', message = '', options = {}) => {
    const themeOpts = themes.getOptionsForTheme(options.theme, options.swapTheme);
    const allOptions = { ...DEFAULT_OPTIONS, ...options, ...themeOpts, };
    const {
        messageBg, messageColor, messageStyle, messageWidth,
        labelBg, labelColor, labelStyle, labelWidth,
        link, forceLink,
    } = allOptions;

    if (themeOpts.label) label = themeOpts.label;
    if (themeOpts.message) message = themeOpts.message;

    const lblColorer = getTextColor(getBgColor(clc, labelBg), labelColor);
    const msgColorer = getTextColor(getBgColor(clc, messageBg), messageColor);

    const paddedLbl = paddToFitWidth(label, labelWidth);
    const paddedMsg = paddToFitWidth(message, messageWidth);

    const lblFormatted = format(lblColorer, paddedLbl, labelStyle);
    const msgFormatted = format(msgColorer, paddedMsg, messageStyle);

    const badge = `${label && lblFormatted}${message && msgFormatted} `;
    const makeLink = link && terminalLink.isSupported;

    return (makeLink || forceLink) ? terminalLink(badge, link) : badge;
};

const createThemeFn = (theme) => {
    const themeFn = (label, message, options = {}) => makeBadge(label, message, { ...options, theme });
    themeFn.swapped = (label, message, options = {}) => themeFn(label, message, { ...options, swapTheme: true });
    return themeFn;
};


const registerThemeFn = (name) => {
    makeBadge[name] = createThemeFn(name);
}

/** List of all available theme names */
const themeNames = Object.keys(themes);
themeNames.forEach(registerThemeFn);

/**
 * Function used to register new themes
 * 
 * @example
 * ```js
 * badge.addTheme('new-theme', { // theme options  });
 * ```
 */
makeBadge.addTheme = (name, options) => {
    themes[name] = options;
    registerThemeFn(name);
};

makeBadge.theme = (theme) => createThemeFn(theme);

module.exports = {
    badge: makeBadge,
    availableThemes: themeNames,
};