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|
import sgMail from "@sendgrid/mail";
import sgHelpers from "@sendgrid/helpers";
import { ExpressHandlebars } from "express-handlebars";
import nodemailer, { Transporter } from "nodemailer";
import { GathioConfig, getConfig } from "./config.js";
import SMTPTransport from "nodemailer/lib/smtp-transport/index.js";
import { exitWithError } from "./process.js";
const config = getConfig();
type EmailTemplateName =
| "addEventAttendee"
| "addEventComment"
| "createEvent"
| "createEventGroup"
| "createEventMagicLink"
| "deleteEvent"
| "editEvent"
| "eventGroupUpdated"
| "removeEventAttendee"
| "subscribed"
| "unattendEvent";
export class EmailService {
nodemailerTransporter: Transporter | undefined = undefined;
sgMail: typeof sgMail | undefined = undefined;
hbs: ExpressHandlebars
public constructor(config: GathioConfig, hbs: ExpressHandlebars) {
this.hbs = hbs;
switch (config.general.mail_service) {
case "sendgrid": {
if (!config.sendgrid?.api_key) {
return exitWithError(
"Sendgrid is configured as the email service, but no API key is provided. Please provide an API key in the config file.",
);
}
this.sgMail = sgMail;
this.sgMail.setApiKey(config.sendgrid.api_key);
console.log("Sendgrid is ready to send emails.");
break;
}
case "nodemailer": {
if (config.nodemailer?.smtp_url) {
this.nodemailerTransporter = nodemailer.createTransport(
config.nodemailer?.smtp_url,
);
} else {
if (
!config.nodemailer?.smtp_server ||
!config.nodemailer?.smtp_port
) {
return exitWithError(
"Nodemailer is configured as the email service, but not all required fields are provided. Please provide all required fields in the config file.",
);
}
const nodemailerConfig = {
host: config.nodemailer?.smtp_server,
port: Number(config.nodemailer?.smtp_port) || 587,
tls: {
// do not fail on invalid certs
rejectUnauthorized: false,
},
} as SMTPTransport.Options;
if (config.nodemailer?.smtp_username) {
nodemailerConfig.auth = {
user: config.nodemailer?.smtp_username,
pass: config.nodemailer?.smtp_password,
};
}
this.nodemailerTransporter =
nodemailer.createTransport(nodemailerConfig);
}
}
}
}
public async verify(): Promise<boolean> {
if (this.nodemailerTransporter) {
const nodemailerVerified = await this.nodemailerTransporter.verify();
if (nodemailerVerified) {
console.log("Nodemailer is ready to send emails.");
return true;
} else {
return exitWithError(
"Error verifying Nodemailer transporter. Please check your Nodemailer configuration.",
);
}
}
return true;
}
public async sendEmail({
to,
bcc,
subject,
text,
html,
}: {
to: string | string[];
bcc?: string | string[];
subject: string;
text: string;
html?: string;
}): Promise<boolean> {
if (this.sgMail) {
try {
await this.sgMail.send({
to,
bcc,
from: config.general.email,
subject,
text,
html,
});
return true;
} catch (e: unknown | sgHelpers.classes.ResponseError) {
if (e instanceof sgHelpers.classes.ResponseError) {
console.error('sendgrid error', e.response.body);
} else {
console.error('sendgrid error', e);
}
return false;
}
} else if (this.nodemailerTransporter) {
try {
await this.nodemailerTransporter.sendMail({
from: config.general.email,
to,
bcc,
subject,
text,
html,
});
return true;
} catch (e) {
console.error(e);
return false;
}
} else {
// no mailer, so noop
return true;
}
}
public async sendEmailFromTemplate({
to,
bcc = "",
subject,
templateName,
templateData = {}
}: {
to: string | string[];
bcc?: string | string[] | undefined;
subject: string;
templateName: EmailTemplateName;
templateData?: object;
},
): Promise<boolean> {
const [html, text] = await Promise.all([
this.hbs.renderView(
`./views/emails/${templateName}/${templateName}Html.handlebars`,
{
domain: config.general.domain,
contactEmail: config.general.email,
siteName: config.general.site_name,
mailService: config.general.mail_service,
siteLogo: config.general.email_logo_url,
isFederated: config.general.is_federated || true,
cache: true,
layout: "email.handlebars",
...templateData,
}
),
this.hbs.renderView(
`./views/emails/${templateName}/${templateName}Text.handlebars`,
{
domain: config.general.domain,
contactEmail: config.general.email,
siteName: config.general.site_name,
mailService: config.general.mail_service,
siteLogo: config.general.email_logo_url,
isFederated: config.general.is_federated || true,
cache: true,
layout: "email.handlebars",
...templateData,
}
),
]);
return this.sendEmail({
to,
bcc,
subject: `${config.general.site_name}: ${subject}`,
text,
html
});
}
}
|
