// Run on the command line to test colors.
// node userColorsTest.js > colorTest.html
console.log(`<body style="background: #2d3748">`);
for (var i = 0; i < 20; i++) {
const element = generateElement(randomString(6));
console.log(element);
}
console.log(`</body>`);
function generateElement(string) {
const bgColor = messageBubbleColorForString(string);
const fgColor = textColorForString(string);
return `<div style="background-color: ${bgColor}; color: ${fgColor}; padding: 30px;">${string}</div>`;
}
function randomString(length) {
return Math.random().toString(36).substring(length);
}
function messageBubbleColorForString(str) {
let hash = 0;
for (let i = 0; i < str.length; i++) {
// eslint-disable-next-line
hash = str.charCodeAt(i) + ((hash << 5) - hash);
}
// Tweak these to adjust the result of the color
const saturation = 25;
const lightness = 45;
const alpha = 0.3;
const hue = parseInt(Math.abs(hash), 16) % 360;
return `hsla(${hue}, ${saturation}%, ${lightness}%, ${alpha})`;
}
function textColorForString(str) {
let hash = 0;
for (let i = 0; i < str.length; i++) {
// eslint-disable-next-line
hash = str.charCodeAt(i) + ((hash << 5) - hash);
}
// Tweak these to adjust the result of the color
const saturation = 80;
const lightness = 80;
const alpha = 0.8;
const hue = parseInt(Math.abs(hash), 16) % 360;
return `hsla(${hue}, ${saturation}%, ${lightness}%, ${alpha})`;
}