Added new EmailBuilder class

lib/Emailer.js

@@ -0,0 +1,78 @@
+'use strict';
+
+function removeDupes(src, dest) {
+	return src.filter(item => !dest.includes(item));
+}
+
+class EmailBuilder {
+	subject;
+	body;
+	HTMLBody;
+	from = 'Stratos <contact@stratos.com>';
+	to;
+	cc;
+	bcc;
+
+	constructor() {
+		this.to = [];
+		this.cc = [];
+		this.bcc = [];
+	}
+
+	setSubject(subject) {
+		this.subject = subject;
+		return this;
+	}
+
+	setBody(body) {
+		this.body = body;
+		return this;
+	}
+
+	setHTMLBody(HTMLBody) {
+		this.HTMLBody = HTMLBody;
+		return this;
+	}
+
+	setFrom(from) {
+		this.from = from;
+		return this;
+	}
+
+	addTo(addresses) {
+		const newAddresses = removeDupes(addresses, this.to);
+		this.to.push(...newAddresses);
+		return this;
+	}
+
+	removeTo(addresses) {
+		this.to = removeDupes(this.to, addresses);
+		return this;
+	}
+
+	addCC(addresses) {
+		const newAddresses = removeDupes(addresses, this.to);
+		this.cc.push(...newAddresses);
+		return this;
+	}
+
+	removeCC(addresses) {
+		this.cc = removeDupes(this.cc, addresses);
+		return this;
+	}
+
+	addBCC(addresses) {
+		const newAddresses = removeDupes(addresses, this.to);
+		this.bcc.push(...newAddresses);
+		return this;
+	}
+
+	removeBCC(addresses) {
+		this.bcc = removeDupes(this.bcc, addresses);
+		return this;
+	}
+}
+
+module.exports = {
+	EmailBuilder: EmailBuilder
+};