export default class MailBuilder {
    message: any;
    constructor(message = {}) {
        this.message = message;
    }

    from(addresses: string[] | string): MailBuilder {
        this.message.from = addresses;
        return this;
    }

    to(addresses: string[] | string): MailBuilder {
        this.message.to = addresses;
        return this;
    }

    cc(addresses: string[] | string): MailBuilder {
        this.message.cc = addresses;
        return this;
    }

    bcc(addresses: string[] | string): MailBuilder {
        this.message.bcc = addresses;
        return this;
    }

    subject(subject: string): MailBuilder {
        this.message.subject = subject;
        return this;
    }

    text(textContent: string): MailBuilder {
        this.message.text = textContent;
        return this;
    }

    html(htmlContent: string): MailBuilder {
        this.message.html = htmlContent;
        return this;
    }

    inReplyTo(messageID: string): MailBuilder {
        this.message.inReplyTo = messageID;
        return this;
    }

    inReplySubject(originSubject: string): MailBuilder {
        // todo concate if multiple ?
        this.message.subject = "RE: " + originSubject;
        return this;
    }
    // https://cr.yp.to/immhf/thread.html
}