const AVATAR_COLORS = [
    '#d12655',
    '#c42685',
    '#a334c2',
    '#853de0',
    '#6548db',
    '#485ddd',
    '#2670cf',
    '#087caa',
    '#008579',
    '#148348',
    '#7846c7',
    '#d13243',
];

export const avatarColor = (seed: string): string => {
    let hash = 0;
    for (let i = 0; i < seed.length; i++) {
        hash = (hash * 31 + seed.charCodeAt(i)) >>> 0;
    }

    return AVATAR_COLORS[hash % AVATAR_COLORS.length]!;
};

export const avatarInitial = (name: string | null | undefined): string => {
    const first = Array.from((name ?? '').trim())[0];

    return first ? first.toUpperCase() : '?';
};