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

interface Options {
    subject?: string;
    from?: User[];
    sender?: User[];
    replyTo?: User[];
    to?: User[];
    cc?: User[];
    bcc?: User[];
    inReplyTo?: string;
    messageId?: string;
    date?: string;
    flags?: string[];
    uid?: number;
    modseq?: number;
}

export function generateAttrs(options: Options): AttrsWithEnvelope {
    const attrs = {
        "size": 42,
        "envelope": {
            date: "2023-03-21T15:25:42.000Z",
            subject: options.subject ?? "subject" + randomString(10),
            from: options.from ?? undefined,
            sender: options.sender ?? undefined,
            replyTo: options.replyTo ?? undefined,
            to: options.to ?? undefined,
            cc: options.cc ?? undefined,
            bcc: options.bcc ?? undefined,
            inReplyTo: options.inReplyTo ?? undefined,
            messageId: options.messageId ?? randomString(10),
        },
        "date": options.date ?? new Date().toDateString(),
        "flags": options.flags ?? [],
        "uid": options.uid ?? randomInt(3),
        "modseq": options.modseq ?? randomInt(7),
    };
    return attrs;
}

export interface UserTest {
    user: User;
    id: number;
}

export function generateUsers(nb: number): UserTest[] {
    const users: {user: User, id: number}[] = [];
    for (let i = 0; i < nb; i++) {
        users.push({
            user: {
                name: "",
                mailbox: names[i],
                host: "provider.com",
            },
            id: i,
        });
    }
    return users;
}

function randomString(length: number): string {
    let result = "";
    const characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    const charactersLength = characters.length;
    for (let i = 0; i < length; i++) {
        result += characters.charAt(Math.floor(Math.random() * charactersLength));
    }
    return result;
}

function randomInt(length: number): number {
    return parseInt((Math.random() * Math.pow(10, length)).toFixed());
}