103 lines
2.5 KiB
TypeScript
103 lines
2.5 KiB
TypeScript
import { exec } from "node:child_process";
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import { mkdir, writeFile } from "node:fs/promises";
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import { resolve } from "node:path";
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import { Resend } from "resend";
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import { env } from "@/env";
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import { logger } from "@/lib/logger";
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let resend: Resend | null = null;
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function getResend(): Resend | null {
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if (!env.RESEND_API_KEY) return null;
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if (!resend) resend = new Resend(env.RESEND_API_KEY);
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return resend;
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}
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function sendViaSendmail(
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to: string,
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subject: string,
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html: string,
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from: string,
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): Promise<boolean> {
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return new Promise((resolve) => {
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const headers = [
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`From: ${from}`,
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`To: ${to}`,
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`Subject: ${subject}`,
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"MIME-Version: 1.0",
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'Content-Type: text/html; charset="UTF-8"',
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].join("\r\n");
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const child = exec("sendmail -t", (error) => {
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if (error) {
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logger.error("Sendmail failed", {
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module: "email",
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error: error.message,
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});
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resolve(false);
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} else {
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resolve(true);
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}
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});
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if (child.stdin) {
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child.stdin.write(`${headers}\r\n\r\n${html}`);
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child.stdin.end();
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}
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});
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}
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async function writeToFile(
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to: string,
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subject: string,
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html: string,
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from: string,
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): Promise<boolean> {
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try {
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const logDir = resolve(process.cwd(), "storage", "logs");
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// eslint-disable-next-line security/detect-non-literal-fs-filename
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await mkdir(logDir, { recursive: true });
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const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
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const filename = `email-${timestamp}.html`;
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const content = `<!-- To: ${to} | From: ${from} | Subject: ${subject} -->\n${html}`;
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// eslint-disable-next-line security/detect-non-literal-fs-filename
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await writeFile(resolve(logDir, filename), content, "utf-8");
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logger.info("Email written to file", { module: "email", filename });
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return true;
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} catch (e) {
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logger.error("Failed to write email to file", {
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module: "email",
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error: (e as Error).message,
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});
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return false;
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}
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}
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/** Send an HTML email. Tries Resend → local sendmail → file fallback. Always returns true. */
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export async function sendMail(
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to: string,
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subject: string,
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html: string,
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): Promise<boolean> {
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const from = env.SMTP_FROM ?? `no-reply@${env.HOTEL_NAME}`;
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const r = getResend();
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if (r) {
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try {
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await r.emails.send({ from, to, subject, html });
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return true;
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} catch (e) {
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logger.error("Resend API failed", {
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module: "email",
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error: (e as Error).message,
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});
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}
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}
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const ok = await sendViaSendmail(to, subject, html, from);
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if (ok) return true;
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await writeToFile(to, subject, html, from);
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return true;
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}
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