116 lines
3 KiB
TypeScript
116 lines
3 KiB
TypeScript
type Env = {
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TURNSTILE_SECRET_KEY?: string;
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RESEND_API_KEY?: string;
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CONTACT_FROM_EMAIL?: string;
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CONTACT_TO_EMAIL?: string;
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};
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const jsonResponse = (data: Record<string, unknown>, status = 200) =>
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new Response(JSON.stringify(data), {
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status,
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headers: { "content-type": "application/json" },
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});
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const readFormField = (value: FormDataEntryValue | null) =>
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typeof value === "string" ? value.trim() : "";
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export const onRequestPost: PagesFunction<Env> = async ({
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request,
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env,
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}) => {
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const formData = await request.formData();
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const name = readFormField(formData.get("name"));
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const email = readFormField(formData.get("email"));
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const message = readFormField(formData.get("message"));
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const turnstileToken = readFormField(
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formData.get("cf-turnstile-response")
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);
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if (!name || !email || !message) {
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return jsonResponse(
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{ ok: false, error: "Missing required fields." },
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400
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);
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}
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if (!env.TURNSTILE_SECRET_KEY) {
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return jsonResponse(
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{ ok: false, error: "Turnstile secret key not configured." },
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500
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);
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}
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if (!turnstileToken) {
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return jsonResponse(
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{ ok: false, error: "Turnstile verification failed." },
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400
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);
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}
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const verifyBody = new URLSearchParams({
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secret: env.TURNSTILE_SECRET_KEY,
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response: turnstileToken,
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remoteip: request.headers.get("CF-Connecting-IP") ?? "",
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});
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const verifyResponse = await fetch(
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"https://challenges.cloudflare.com/turnstile/v0/siteverify",
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{
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method: "POST",
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body: verifyBody,
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}
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);
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const verifyResult = (await verifyResponse.json()) as {
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success?: boolean;
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};
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if (!verifyResult.success) {
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return jsonResponse(
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{ ok: false, error: "Turnstile verification failed." },
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400
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);
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}
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if (!env.RESEND_API_KEY) {
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return jsonResponse(
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{ ok: false, error: "Email provider not configured." },
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500
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);
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}
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const fromEmail = env.CONTACT_FROM_EMAIL;
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if (!fromEmail) {
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return jsonResponse(
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{ ok: false, error: "Sender email not configured." },
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500
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);
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}
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const toEmail = env.CONTACT_TO_EMAIL ?? "calum@muir.in";
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const emailPayload = {
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from: fromEmail,
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to: [toEmail],
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reply_to: email,
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subject: "New contact form submission",
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text: `Name: ${name}\nEmail: ${email}\n\n${message}`,
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};
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const emailResponse = await fetch("https://api.resend.com/emails", {
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method: "POST",
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headers: {
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Authorization: `Bearer ${env.RESEND_API_KEY}`,
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"Content-Type": "application/json",
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},
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body: JSON.stringify(emailPayload),
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});
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if (!emailResponse.ok) {
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return jsonResponse(
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{ ok: false, error: "Failed to send email." },
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502
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);
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}
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return jsonResponse({ ok: true });
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};
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