colors.js

const contrast = require('wcag-contrast');
const parse = require('csv-parse');
const fs = require('fs');
let counter = 0;

parse(fs.readFileSync('colors.csv'), {from: 2}, (err, result) => {
    for (let row of result) {
        let [slug, background, foreground] = row;

        background = val(background, '#FFFFFF');
        foreground = val(foreground, '#000000');

        const score = contrast.hex(background, foreground);
        const level = contrast.score(score);

        if (level !== 'AAA') {
            console.log('');
            console.log(contrast.score(score) || '-', score);
            console.log(`https://historia-arte.com/obras/${slug}`);
            console.log(`http://leaverou.github.io/contrast-ratio/#%23${foreground.substr(1)}-on-%23${background.substr(1)}`);
            console.log('');
            console.log('==========');
            ++counter;
        }
    }
    
    console.log(`${counter} combinacións con pouco contraste`);
});


function val(value, def) {
    if (!value || value === 'NULL') {
        return def;
    }

    if (value === 'white') {
        return '#FFFFFF';
    }

    if (value === 'black') {
        return '#000000';
    }

    return value;
}