Generate Gravatar or default to Initials Avatar

generateAavatar.js

class Avatar {

    colors = ['#F59C0F', '#009FD4', '#B381B3', '#E3BC00', '#D47500', '#DC2A2A', '#0027D7', "#00B4FF", "#107C10"];

    getInitials(fullName: string): string {
        // remove domain if exists
        if (fullName.lastIndexOf('@') > 0) {
            fullName = fullName.substring(0, fullName.lastIndexOf('@'));
        }

        // replace '.' with spaces and split the string
        const allNames = fullName.trim().replace('.', ' ').split(' ');

        if (allNames.length === 1) {
            let name = allNames[0];
            if (name.length === 0) {
                return '';
            }
            if (name.length === 1) {
                return name.charAt(0).toUpperCase();
            }
            if (name.length > 1) {
                return name.charAt(0).toUpperCase() + name.charAt(1).toUpperCase();
            }
        }

        return allNames.reduce((acc, curr, index) => {
            if (index === 0 || index === allNames.length - 1) {
                acc = `${acc}${curr.charAt(0).toUpperCase()}`;
            }
            return acc;
        }, '');
    }

    getImage(fullName: string) {
        return this.colors[this.numberFromText(this.getInitials(fullName))];
    }

    numberFromText(text: any): number {
        let sum = 0;

        for (let index in text) {
            sum += text.charCodeAt(index);
        }
        return sum % this.colors.length;
    }
    
}


let avatar = new Avatar();
console.log(avatar.getImage('Viktor Reib'));