Test form for sending emails

Proper email attachment handling
Testing sending mails
2025-06-24 14:50:04 +02:00 · 2025-06-24 14:49:07 +02:00 · 2025-06-24 14:06:03 +02:00 · 2025-06-24 14:05:54 +02:00
5 changed files with 197 additions and 14 deletions
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,8 @@
 				"@supabase/supabase-js": "^2.50.0",
 				"@sveltejs/adapter-node": "^5.2.12",
 				"googleapis": "^150.0.1",
-				"papaparse": "^5.5.3"
+				"papaparse": "^5.5.3",
+				"quoted-printable": "^1.0.1"
 			},
 			"devDependencies": {
 				"@sveltejs/kit": "^2.16.0",
@@ -2691,6 +2692,18 @@
 				"url": "https://github.com/sponsors/ljharb"
 			}
 		},
+		"node_modules/quoted-printable": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/quoted-printable/-/quoted-printable-1.0.1.tgz",
+			"integrity": "sha512-cihC68OcGiQOjGiXuo5Jk6XHANTHl1K4JLk/xlEJRTIXfy19Sg6XzB95XonYgr+1rB88bCpr7WZE7D7AlZow4g==",
+			"license": "MIT",
+			"dependencies": {
+				"utf8": "^2.1.0"
+			},
+			"bin": {
+				"quoted-printable": "bin/quoted-printable"
+			}
+		},
 		"node_modules/readdirp": {
 			"version": "4.1.2",
 			"resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
@@ -3050,6 +3063,12 @@
 			"integrity": "sha512-XdVKMF4SJ0nP/O7XIPB0JwAEuT9lDIYnNsK8yGVe43y0AWoKeJNdv3ZNWh7ksJ6KqQFjOO6ox/VEitLnaVNufw==",
 			"license": "BSD"
 		},
+		"node_modules/utf8": {
+			"version": "2.1.2",
+			"resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.2.tgz",
+			"integrity": "sha512-QXo+O/QkLP/x1nyi54uQiG0XrODxdysuQvE5dtVqv7F5K2Qb6FsN+qbr6KhF5wQ20tfcV3VQp0/2x1e1MRSPWg==",
+			"license": "MIT"
+		},
 		"node_modules/util-deprecate": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
 		"@supabase/supabase-js": "^2.50.0",
 		"@sveltejs/adapter-node": "^5.2.12",
 		"googleapis": "^150.0.1",
-		"papaparse": "^5.5.3"
+		"papaparse": "^5.5.3",
+		"quoted-printable": "^1.0.1"
 	}
 }
--- a/src/lib/google.ts
+++ b/src/lib/google.ts
@@ -1,5 +1,6 @@
 import { google } from 'googleapis';
 import { env } from '$env/dynamic/private';
+import quotedPrintable from 'quoted-printable';   //  tiny, zero-dep package

 export const scopes = ['https://www.googleapis.com/auth/gmail.send'];

@@ -27,21 +28,73 @@ export async function exchangeCodeForTokens(code: string) {

 export async function sendGmail(
 	refreshToken: string,
-	{ to, subject, text }: { to: string; subject: string; text: string }
+	{ to, subject, text, qr_code }: { to: string; subject: string; text: string; qr_code: string }
 ) {
 	const oauth = getOAuthClient();
 	oauth.setCredentials({ refresh_token: refreshToken });

 	const gmail = google.gmail({ version: 'v1', auth: oauth });
-	const raw = Buffer
-		.from(
-			[`To: ${to}`,
-			 'Content-Type: text/plain; charset="UTF-8"',
-			 'Content-Transfer-Encoding: 7bit',
+
+	const message_html =
+		`<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <style>
+      @import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');
+    </style>
+  </head>
+  <body style="font-family: 'Lato', sans-serif; background-color: #f9f9f9; padding: 20px; margin: 0;">
+    <div style="max-width: 600px; margin: auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
+      <p style="white-space: pre-line;font-size: 16px; line-height: 1.5; color: #333;">${text}</p>
+      <img src="cid:qrCode1" alt="QR Code" style="display: block; margin: 20px auto; max-width: 50%; min-width: 200px; height: auto;" />
+      <div style="width: 100%; display: flex; flex-direction: row; justify-content: space-between">
+        <div style="height: 4px; width: 20%; background: #00aeef;"></div>
+        <div style="height: 4px; width: 20%; background: #ec008c;"></div>
+        <div style="height: 4px; width: 20%; background: #7ac143;"></div>
+        <div style="height: 4px; width: 20%; background: #f47b20;"></div>
+        <div style="height: 4px; width: 20%; background: #2e3192;"></div>
+      </div>
+      <div style="font-size: 12px; color: #999; padding-top: 0px; margin-top: 10px; line-height: 1.5; ">
+        <p>This email has been generated with the help of *insert software name*</p>
+      </div>
+    </div>
+  </body>
+</html>`;
+
+
+	const boundary = 'BOUNDARY';
+	const nl = '\r\n';                   // RFC-5322 line ending
+
+	const htmlQP = quotedPrintable.encode(message_html);
+	const qrLines = qr_code.replace(/.{1,76}/g, '$&' + nl);
+
+	const rawParts = [
+		'MIME-Version: 1.0',
+		`To: ${to}`,
 		`Subject: ${subject}`,
+		`Content-Type: multipart/related; boundary="${boundary}"`,
 		'',
-			 text].join('\n'))
-		.toString('base64url');
+		`--${boundary}`,
+		'Content-Type: text/html; charset="UTF-8"',
+		'Content-Transfer-Encoding: quoted-printable',
+		'',
+		htmlQP,
+		'',
+		`--${boundary}`,
+		'Content-Type: image/png',
+		'Content-Transfer-Encoding: base64',
+		'Content-ID: <qrCode1>',
+		'Content-Disposition: inline; filename="qr.png"',
+		'',
+		qrLines,
+		'',
+		`--${boundary}--`,
+		''
+	];
+
+	const rawMessage = rawParts.join(nl);
+
+	const raw = Buffer.from(rawMessage).toString('base64url');

 	await gmail.users.messages.send({
 		userId: 'me',
--- a/src/routes/private/api/gmail/+server.ts
+++ b/src/routes/private/api/gmail/+server.ts
@@ -36,13 +36,13 @@ export const GET: RequestHandler = async ({ url }) => {

 /* ───────────── POST ───────────── */
 export const POST: RequestHandler = async ({ request }) => {
-	const { action, refreshToken, to, subject, text } = await request.json();
+	const { action, refreshToken, to, subject, text, qr_code } = await request.json();

 	/* send e-mail */
 	if (action === 'send') {
 		if (!refreshToken) return new Response('Missing token', { status: 401 });
 		try {
-			await sendGmail(refreshToken, { to, subject, text });
+			await sendGmail(refreshToken, { to, subject, text, qr_code });
 			return json({ ok: true });
 		} catch (err) {
 			return new Response((err as Error).message, { status: 500 });
--- a/src/routes/private/creator/emailtest/+page.svelte
+++ b/src/routes/private/creator/emailtest/+page.svelte
@@ -0,0 +1,110 @@
+<script lang="ts">
+import { onMount } from 'svelte';
+import { goto } from '$app/navigation';
+
+let to = '';
+let subject = '';
+let body = '';
+let qrcode_b64 = '';
+let loading = false;
+let error = '';
+let success = '';
+let authorized = false;
+let refreshToken = '';
+
+async function validateToken(token: string): Promise<boolean> {
+	if (!token) return false;
+	const res = await fetch('/private/api/gmail', {
+		method: 'POST',
+		headers: { 'Content-Type': 'application/json' },
+		body: JSON.stringify({ action: 'validate', refreshToken: token })
+	});
+	if (!res.ok) return false;
+	const data = await res.json();
+	return !!data.valid;
+}
+
+onMount(async () => {
+	refreshToken = localStorage.getItem('gmail_refresh_token') ?? '';
+	authorized = await validateToken(refreshToken);
+});
+
+const connect = () => goto('/private/api/gmail?action=auth');
+
+async function sendTestEmail() {
+	error = '';
+	success = '';
+	loading = true;
+	try {
+		const r = await fetch('/private/api/gmail', {
+			method: 'POST',
+			headers: { 'Content-Type': 'application/json' },
+			body: JSON.stringify({
+				action: 'send',
+				to,
+				subject,
+				text: body,
+				qr_code: qrcode_b64,
+				refreshToken
+			})
+		});
+		if (r.ok) {
+			success = 'Email sent!';
+			to = subject = body = qrcode_b64 = '';
+		} else {
+			error = await r.text();
+		}
+	} catch (e) {
+		error = e.message || 'Unknown error';
+	}
+	loading = false;
+}
+</script>
+
+<div class="max-w-lg mx-auto bg-white border border-gray-300 rounded p-8 mt-8 shadow">
+	<h2 class="text-2xl font-semibold mb-6 text-center">Test Email Sender</h2>
+	{#if !authorized}
+		<div class="mb-4 flex items-center justify-between">
+			<p class="text-gray-700">Google not connected.</p>
+			<button class="btn bg-blue-600 hover:bg-blue-700 text-white font-semibold py-2 px-4 rounded ml-auto" on:click={connect}>
+				Connect Google
+			</button>
+		</div>
+	{:else}
+		<form on:submit|preventDefault={sendTestEmail} class="space-y-4">
+			<label class="block">
+				<span class="text-gray-700">To</span>
+				<input type="email" class="mt-1 block w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-200" bind:value={to} required />
+			</label>
+			<label class="block">
+				<span class="text-gray-700">Subject</span>
+				<input type="text" class="mt-1 block w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-200" bind:value={subject} required />
+			</label>
+			<label class="block">
+				<span class="text-gray-700">Body</span>
+				<textarea class="mt-1 block w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-200 resize-none" rows="6" bind:value={body} required></textarea>
+			</label>
+			<label class="block">
+				<span class="text-gray-700">QR Code (base64, data:image/png;base64,...)</span>
+				<input type="text" class="mt-1 block w-full border border-gray-300 rounded px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-200 font-mono text-xs" bind:value={qrcode_b64} placeholder="Paste base64 image string here" required />
+			</label>
+			<button type="submit" class="w-full py-2 bg-blue-600 text-white rounded hover:bg-blue-700 transition" disabled={loading}>
+				{#if loading}
+					<svg class="animate-spin h-5 w-5 mr-2 inline-block text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
+						<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+						<path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v8z"></path>
+					</svg>
+					Sending...
+				{:else}
+					Send Test Email
+				{/if}
+			</button>
+		</form>
+	{/if}
+	{#if error}
+		<div class="rounded border-l-4 border-red-500 bg-red-100 p-4 text-red-700 mt-4">{error}</div>
+	{/if}
+	{#if success}
+		<div class="rounded border-l-4 border-green-500 bg-green-100 p-4 text-green-700 mt-4">{success}</div>
+	{/if}
+</div>
Author	SHA1	Message	Date
Roman Krček	c24a845999	Test form for sending emails	2025-06-24 14:50:04 +02:00
Roman Krček	be2e22100f	Proper email attachment handling	2025-06-24 14:49:07 +02:00
Roman Krček	e2e18d1084	Testing sending mails	2025-06-24 14:06:03 +02:00
Roman Krček	ac4c86aaa9	HTML for emails	2025-06-24 14:05:54 +02:00