react-native-ui-lib/typings/helpers/AvatarHelper.js

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import _ from "lodash";
import URL from "url-parse";
import Colors from "../style/colors";
function hashStringToNumber(str) {
    let hash = 5381;
    for (let i = 0; i < str.length; i++) {
        const char = str.charCodeAt(i);
        hash = (hash << 5) + hash + char; /* hash * 33 + c */ // eslint-disable-line
    }
    return hash;
}
export function getAvatarColors() {
    return [
        Colors.blue20,
        Colors.cyan20,
        Colors.green20,
        Colors.yellow20,
        Colors.orange20,
        Colors.red20,
        Colors.purple20,
        Colors.violet20
    ];
}
export function getColorById(id, avatarColors = getAvatarColors()) {
    if (!id) {
        return avatarColors[0];
    }
    const hashedId = hashStringToNumber(id);
    const colorIndex = Math.abs(hashedId % avatarColors.length);
    return avatarColors[colorIndex];
}
export function getInitials(name) {
    let initials = "";
    if (name && _.isString(name)) {
        const nameSplitted = _.chain(name)
            .split(/\s+/g)
            .filter(word => word.length > 0)
            .take(2)
            .value();
        _.each(nameSplitted, str => {
            initials += str[0];
        });
    }
    return _.toUpper(initials);
}
export function isGravatarUrl(url) {
    const { hostname, pathname } = new URL(url);
    return (_.split(hostname, ".").includes("gravatar") &&
        pathname.startsWith("/avatar/"));
}
export function patchGravatarUrl(gravatarUrl) {
    const url = new URL(gravatarUrl, true);
    const { query } = url;
    query.d = "404";
    delete query.default;
    url.set("query", query);
    return url.toString();
}