import { Envelope, User } from "../../interfaces/mail/attrs.interface";

export function nbMembers(envelope: Envelope) {
    return getMembers(envelope).length;
}

export function getMembers(envelope: Envelope) {
    const members: User[] = [];
    const fields = ["from", "to", "sender", "replyTo", "cc", "bcc"] as const;
    fields.forEach((field) => {
        envelope[field]?.forEach((member: User) => {
            if (members.find((m) => m.mailbox === member.mailbox && m.host === member.host)) return;
            members.push(member);
        });
    });
    return members;
}