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portfolio/app/api/email/route.tsx
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feat: dark email design + Telegram notification for contact form
Notification email (to Dennis):
- Complete dark-theme redesign: #0c0c0c bg, #141414 card, gradient top bar
- Sender avatar with liquid-mint/sky gradient + initial letter
- Subject displayed as pill badge
- Message in styled blockquote with mint left border
- Gradient "Direkt antworten" CTA button
- replyTo header already set so email Reply goes directly to sender

Telegram notification:
- sendTelegramNotification() fires after successful email send (fire-and-forget)
- Uses TELEGRAM_BOT_TOKEN + TELEGRAM_CHAT_ID env vars (silently skips if absent)
- HTML-formatted message with emojis, name/email/subject/message preview
- Inline keyboard button "Per E-Mail antworten" with pre-filled mailto link
- Never blocks the contact form response if Telegram fails

Reply email templates (respond/route.tsx):
- Same dark design system as notification email
- baseEmail() generates consistent header + footer
- messageCard() helper for styled message blocks with colored left border
- ctaButton() helper for gradient CTA buttons
- Templates: welcome, project, quick, reply — all updated to dark theme

Required new env vars:
  TELEGRAM_BOT_TOKEN=<from @BotFather>
  TELEGRAM_CHAT_ID=<your chat/user ID>

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-07 00:17:39 +01:00

332 lines
13 KiB
TypeScript

import { type NextRequest, NextResponse } from "next/server";
import nodemailer from "nodemailer";
import SMTPTransport from "nodemailer/lib/smtp-transport";
import Mail from "nodemailer/lib/mailer";
import { checkRateLimit, getRateLimitHeaders } from '@/lib/auth';
import { prisma } from "@/lib/prisma";
function sanitizeInput(input: string, maxLength: number = 10000): string {
return input.slice(0, maxLength).replace(/[<>]/g, '').trim();
}
function escapeHtml(input: string): string {
return input
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#39;");
}
function escapeHtmlTg(input: string): string {
return input.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
}
async function sendTelegramNotification(data: {
name: string;
email: string;
subject: string;
message: string;
sentAt: string;
}): Promise<void> {
const token = process.env.TELEGRAM_BOT_TOKEN;
const chatId = process.env.TELEGRAM_CHAT_ID;
if (!token || !chatId) return;
const preview = data.message.length > 400
? data.message.slice(0, 400) + "…"
: data.message;
const text = [
"🔔 <b>Neue Kontaktanfrage</b>",
"",
`👤 <b>Name:</b> ${escapeHtmlTg(data.name)}`,
`📧 <b>Email:</b> ${escapeHtmlTg(data.email)}`,
`📌 <b>Betreff:</b> ${escapeHtmlTg(data.subject)}`,
"",
"💬 <b>Nachricht:</b>",
`<i>${escapeHtmlTg(preview)}</i>`,
"",
`🕐 <i>${escapeHtmlTg(data.sentAt)}</i>`,
].join("\n");
try {
await fetch(`https://api.telegram.org/bot${token}/sendMessage`, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
chat_id: chatId,
text,
parse_mode: "HTML",
reply_markup: {
inline_keyboard: [[
{
text: "📧 Per E-Mail antworten",
url: `mailto:${data.email}?subject=${encodeURIComponent("Re: " + data.subject)}`,
},
]],
},
}),
signal: AbortSignal.timeout(5000),
});
} catch {
// Never fail the contact form because of Telegram
}
}
function buildNotificationEmail(opts: {
name: string;
email: string;
subject: string;
messageHtml: string;
initial: string;
replyHref: string;
sentAt: string;
}): string {
const { name, email, subject, messageHtml, initial, replyHref, sentAt } = opts;
return `<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>Neue Kontaktanfrage</title>
</head>
<body style="margin:0;padding:0;background-color:#0c0c0c;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;">
<div style="max-width:600px;margin:0 auto;padding:24px 16px 40px;">
<!-- Card -->
<div style="background:#141414;border-radius:24px;overflow:hidden;border:1px solid #222;">
<!-- Header -->
<div style="background:#111;padding:0 0 0 0;border-bottom:1px solid #1e1e1e;">
<!-- Gradient bar -->
<div style="height:3px;background:linear-gradient(90deg,#a7f3d0 0%,#bae6fd 50%,#e9d5ff 100%);"></div>
<div style="padding:28px 28px 24px;">
<div style="display:flex;align-items:flex-start;justify-content:space-between;gap:12px;">
<div>
<div style="font-size:10px;letter-spacing:0.15em;text-transform:uppercase;color:#555;font-weight:700;margin-bottom:8px;">
dk0.dev · Portfolio Kontakt
</div>
<div style="font-size:26px;font-weight:900;color:#f3f4f6;letter-spacing:-0.03em;line-height:1.15;">
Neue Kontaktanfrage
</div>
<div style="margin-top:6px;font-size:13px;color:#4b5563;">
${escapeHtml(sentAt)}
</div>
</div>
<div style="font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:800;color:#374151;flex-shrink:0;padding-top:4px;">
dk<span style="color:#ef4444;">0</span>.dev
</div>
</div>
</div>
</div>
<!-- Sender -->
<div style="padding:24px 28px;border-bottom:1px solid #1e1e1e;">
<div style="display:flex;align-items:center;gap:16px;">
<!-- Avatar -->
<div style="width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#a7f3d0,#bae6fd);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;color:#111;flex-shrink:0;">
${escapeHtml(initial)}
</div>
<div style="min-width:0;">
<div style="font-size:18px;font-weight:800;color:#f9fafb;letter-spacing:-0.02em;">${escapeHtml(name)}</div>
<div style="font-size:13px;color:#6b7280;margin-top:3px;">${escapeHtml(email)}</div>
</div>
</div>
<!-- Subject pill -->
<div style="margin-top:16px;">
<span style="display:inline-flex;align-items:center;gap:7px;background:#1c1c1c;border:1px solid #2a2a2a;border-radius:100px;padding:6px 14px;">
<span style="width:6px;height:6px;border-radius:50%;background:#a7f3d0;display:inline-block;flex-shrink:0;"></span>
<span style="font-size:13px;font-weight:600;color:#d1d5db;">${escapeHtml(subject)}</span>
</span>
</div>
</div>
<!-- Message -->
<div style="padding:24px 28px;border-bottom:1px solid #1e1e1e;">
<div style="font-size:10px;letter-spacing:0.14em;text-transform:uppercase;font-weight:700;color:#4b5563;margin-bottom:12px;">
Nachricht
</div>
<div style="background:#0f0f0f;border:1px solid #1e1e1e;border-left:3px solid #a7f3d0;border-radius:0 12px 12px 0;padding:18px 20px;font-size:15px;line-height:1.75;color:#d1d5db;">
${messageHtml}
</div>
</div>
<!-- CTA -->
<div style="padding:24px 28px;border-bottom:1px solid #1e1e1e;">
<a href="${escapeHtml(replyHref)}"
style="display:block;text-align:center;background:linear-gradient(135deg,#a7f3d0,#bae6fd);color:#111;text-decoration:none;padding:14px 24px;border-radius:12px;font-weight:800;font-size:15px;letter-spacing:-0.01em;">
Direkt antworten &rarr;
</a>
<div style="margin-top:10px;text-align:center;font-size:12px;color:#374151;">
Oder einfach auf diese E-Mail antworten — Reply-To ist bereits gesetzt.
</div>
</div>
<!-- Footer -->
<div style="padding:16px 28px;background:#0c0c0c;">
<div style="display:flex;align-items:center;justify-content:space-between;gap:12px;">
<div style="font-size:11px;color:#374151;">
Automatisch generiert &middot; <a href="https://dk0.dev" style="color:#4b5563;text-decoration:none;">dk0.dev</a>
</div>
<div style="font-size:11px;color:#374151;">
contact@dk0.dev
</div>
</div>
</div>
</div>
</div>
</body>
</html>`;
}
export async function POST(request: NextRequest) {
try {
const ip = request.headers?.get?.('x-forwarded-for') ?? request.headers?.get?.('x-real-ip') ?? 'unknown';
if (!checkRateLimit(ip, 5, 60000)) {
return NextResponse.json(
{ error: 'Zu viele Anfragen. Bitte versuchen Sie es später erneut.' },
{
status: 429,
headers: { 'Content-Type': 'application/json', ...getRateLimitHeaders(ip, 5, 60000) },
}
);
}
const body = (await request.json()) as {
email: string;
name: string;
subject: string;
message: string;
};
const email = sanitizeInput(body.email || '', 255);
const name = sanitizeInput(body.name || '', 100);
const subject = sanitizeInput(body.subject || '', 200);
const message = sanitizeInput(body.message || '', 5000);
if (!email || !name || !subject || !message) {
return NextResponse.json({ error: "Alle Felder sind erforderlich" }, { status: 400 });
}
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
if (!emailRegex.test(email)) {
return NextResponse.json({ error: "Ungültige E-Mail-Adresse" }, { status: 400 });
}
if (message.length < 10) {
return NextResponse.json({ error: "Nachricht muss mindestens 10 Zeichen lang sein" }, { status: 400 });
}
if (name.length > 100 || subject.length > 200 || message.length > 5000) {
return NextResponse.json({ error: "Eingabe zu lang" }, { status: 400 });
}
const user = process.env.MY_EMAIL ?? "";
const pass = process.env.MY_PASSWORD ?? "";
if (!user || !pass) {
console.error("❌ Missing email/password environment variables");
return NextResponse.json({ error: "E-Mail-Server nicht konfiguriert" }, { status: 500 });
}
const transportOptions: SMTPTransport.Options = {
host: "mail.dk0.dev",
port: 587,
secure: false,
requireTLS: true,
auth: { type: "login", user, pass },
connectionTimeout: 30000,
greetingTimeout: 30000,
socketTimeout: 60000,
tls:
process.env.SMTP_ALLOW_INSECURE_TLS === "true" || process.env.SMTP_ALLOW_SELF_SIGNED === "true"
? { rejectUnauthorized: false }
: { rejectUnauthorized: true, minVersion: "TLSv1.2" },
};
const transport = nodemailer.createTransport(transportOptions);
let verificationAttempts = 0;
while (verificationAttempts < 3) {
try {
verificationAttempts++;
await transport.verify();
break;
} catch (verifyError) {
if (process.env.NODE_ENV === 'development') {
console.error(`SMTP verification attempt ${verificationAttempts} failed:`, verifyError);
}
if (verificationAttempts >= 3) {
return NextResponse.json({ error: "E-Mail-Server-Verbindung fehlgeschlagen" }, { status: 500 });
}
await new Promise(resolve => setTimeout(resolve, 2000));
}
}
const sentAt = new Date().toLocaleString('de-DE', {
year: 'numeric', month: 'long', day: 'numeric', hour: '2-digit', minute: '2-digit',
});
const initial = (name.trim()[0] || "?").toUpperCase();
const replyHref = `mailto:${email}?subject=${encodeURIComponent(`Re: ${subject}`)}`;
const messageHtml = escapeHtml(message).replace(/\n/g, "<br>");
const mailOptions: Mail.Options = {
from: `"Portfolio Contact" <${user}>`,
to: "contact@dk0.dev",
replyTo: email,
subject: `📬 Neue Anfrage: ${subject}`,
html: buildNotificationEmail({ name, email, subject, messageHtml, initial, replyHref, sentAt }),
text: `Neue Kontaktanfrage\n\nVon: ${name} (${email})\nBetreff: ${subject}\n\n${message}\n\n---\nEingegangen: ${sentAt}`,
};
let sendAttempts = 0;
let result = '';
while (sendAttempts < 3) {
try {
sendAttempts++;
result = await new Promise<string>((resolve, reject) => {
transport.sendMail(mailOptions, (err, info) => {
if (!err) resolve(info.response);
else {
if (process.env.NODE_ENV === 'development') console.error("Error sending email:", err);
reject(err.message);
}
});
});
break;
} catch (sendError) {
if (sendAttempts >= 3) {
throw new Error(`Failed to send email after 3 attempts: ${sendError}`);
}
await new Promise(resolve => setTimeout(resolve, 3000));
}
}
// Telegram notification — fire and forget, never blocks the response
sendTelegramNotification({ name, email, subject, message, sentAt }).catch(() => {});
// Save to DB
try {
await prisma.contact.create({ data: { name, email, subject, message, responded: false } });
} catch (dbError) {
if (process.env.NODE_ENV === 'development') console.error('Error saving contact to DB:', dbError);
}
return NextResponse.json({ message: "E-Mail erfolgreich gesendet", messageId: result });
} catch (err) {
console.error("❌ Unexpected error in email API:", err);
return NextResponse.json({
error: "Fehler beim Senden der E-Mail",
details: err instanceof Error ? err.message : 'Unbekannter Fehler',
}, { status: 500 });
}
}