first commit

lib/smtp.ts

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+/**
+ * lib/smtp.ts
+ * SMTP mail sending via nodemailer + IMAP Sent folder append.
+ * Uses user's mailbox credentials for authenticated SMTP.
+ */
+
+import nodemailer from "nodemailer";
+import { ImapFlow } from "imapflow";
+import type { MailCredentials } from "./imap";
+
+const SMTP_HOST = process.env.MAILCOW_API_URL
+  ? new URL(process.env.MAILCOW_API_URL).hostname
+  : "localhost";
+const SMTP_PORT = parseInt(process.env.SMTP_PORT ?? "587");
+const IMAP_HOST = SMTP_HOST;
+const IMAP_PORT = parseInt(process.env.IMAP_PORT ?? "993");
+
+export interface SendMailOptions {
+  to: string;
+  cc?: string;
+  subject: string;
+  html: string;
+  text?: string;
+  inReplyTo?: string;
+  references?: string;
+  attachments?: {
+    filename: string;
+    content: Buffer | string;
+    contentType?: string;
+  }[];
+}
+
+export async function sendMail(
+  creds: MailCredentials,
+  options: SendMailOptions
+): Promise<{ success: boolean; messageId?: string; error?: string }> {
+  try {
+    const transporter = nodemailer.createTransport({
+      host: SMTP_HOST,
+      port: SMTP_PORT,
+      secure: SMTP_PORT === 465,
+      auth: {
+        user: creds.email,
+        pass: creds.password,
+      },
+      tls: {
+        // Mailcow self-signed cert'e izin ver
+        rejectUnauthorized: false,
+      },
+    });
+
+    const mailOptions = {
+      from: creds.email,
+      to: options.to,
+      cc: options.cc || undefined,
+      subject: options.subject,
+      html: options.html,
+      text: options.text || undefined,
+      inReplyTo: options.inReplyTo || undefined,
+      references: options.references || undefined,
+      attachments: options.attachments?.map((a) => ({
+        filename: a.filename,
+        content: a.content,
+        contentType: a.contentType,
+      })),
+    };
+
+    const result = await transporter.sendMail(mailOptions);
+
+    // Gönderilen maili Sent klasörüne kaydet (IMAP APPEND)
+    try {
+      await appendToSent(creds, mailOptions);
+    } catch (e) {
+      // Sent'e kaydetme başarısız olursa mail yine de gitmiş olur
+      console.error("Sent klasörüne kaydetme hatası:", e);
+    }
+
+    return { success: true, messageId: result.messageId };
+  } catch (err: any) {
+    return { success: false, error: err?.message ?? "SMTP hatası" };
+  }
+}
+
+/**
+ * Gönderilen maili IMAP Sent klasörüne kaydet.
+ * Mailcow'da Sent klasörü "Sent" olarak adlandırılır.
+ */
+async function appendToSent(
+  creds: MailCredentials,
+  mailOptions: Record<string, any>
+): Promise<void> {
+  // nodemailer ile raw mesaj oluştur
+  const transporter = nodemailer.createTransport({ jsonTransport: true });
+  const compiled = await transporter.sendMail(mailOptions);
+  const rawMessage = JSON.parse(compiled.message);
+
+  // Gerçek raw RFC822 mesajı oluştur
+  const buildTransporter = nodemailer.createTransport({ streamTransport: true });
+  const built = await buildTransporter.sendMail(mailOptions);
+  const chunks: Buffer[] = [];
+  for await (const chunk of built.message as any) {
+    chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk));
+  }
+  const rawBuffer = Buffer.concat(chunks);
+
+  const client = new ImapFlow({
+    host: IMAP_HOST,
+    port: IMAP_PORT,
+    secure: true,
+    auth: { user: creds.email, pass: creds.password },
+    logger: false,
+  });
+
+  await client.connect();
+  try {
+    // Sent klasörünü bul
+    const mailboxes = await client.list();
+    let sentPath = "Sent";
+    for (const mb of mailboxes) {
+      if (mb.specialUse === "\\Sent") {
+        sentPath = mb.path;
+        break;
+      }
+    }
+
+    // Mesajı Sent klasörüne ekle (Seen flag ile)
+    await client.append(sentPath, rawBuffer, ["\\Seen"]);
+  } finally {
+    await client.logout();
+  }
+}