From 9aaf4523102a9d831e037d38543b8e92b998040d Mon Sep 17 00:00:00 2001
From: Dorian Niemiec <dorian.niemiec@svrjs.org>
Date: Thu, 7 Nov 2024 21:54:34 +0100
Subject: [PATCH] feat: add the contact form

---
 .env.example                  |  13 ++-
 app/(root)/contact/layout.jsx |  37 +++++++
 app/(root)/contact/page.jsx   | 138 ++++++++++++++++++++++++
 app/api/contact/route.js      | 195 ++++++++++++++++++++++++++++++++++
 constants/index.jsx           |  34 +++++-
 package-lock.json             |  55 +++++++++-
 package.json                  |   5 +-
 7 files changed, 473 insertions(+), 4 deletions(-)
 create mode 100644 app/(root)/contact/layout.jsx
 create mode 100644 app/(root)/contact/page.jsx
 create mode 100644 app/api/contact/route.js

diff --git a/.env.example b/.env.example
index 09e74cc..8b01447 100644
--- a/.env.example
+++ b/.env.example
@@ -1 +1,12 @@
-NEXT_PUBLIC_WEBSITE_URL=
\ No newline at end of file
+NEXT_PUBLIC_WEBSITE_URL=
+
+EMAIL_SERVER=
+EMAIL_PORT=
+EMAIL_SECURE=
+EMAIL_USER=
+EMAIL_PASS=
+EMAIL_CONTACT_ADDRESS=
+EMAIL_CONTACT_DEST=
+
+NEXT_PUBLIC_HCAPTCHA_SITE_KEY=
+HCAPTCHA_SECRET=
\ No newline at end of file
diff --git a/app/(root)/contact/layout.jsx b/app/(root)/contact/layout.jsx
new file mode 100644
index 0000000..dd0c6b7
--- /dev/null
+++ b/app/(root)/contact/layout.jsx
@@ -0,0 +1,37 @@
+export const metadata = {
+  title: "Contact Us - MERNMail",
+  description:
+    "Have questions about MERNMail? Need technical support? Visit our Contact Us page to find various ways to get in touch with our team, including email, and our official support channel.",
+  openGraph: {
+    title: "Contact Us - MERNMail",
+    description:
+      "Have questions about MERNMail? Need technical support? Visit our Contact Us page to find various ways to get in touch with our team, including email, and our official support channel.",
+    url: `${process.env.NEXT_PUBLIC_WEBSITE_URL}/contact`,
+    type: "website",
+    images: [
+      {
+        url: `${process.env.NEXT_PUBLIC_WEBSITE_URL}/metadata/mernmail-cover.png`,
+        width: 2560,
+        height: 1440,
+        alt: "Contact Us - MERNMail"
+      }
+    ]
+  },
+  twitter: {
+    card: "summary_large_image",
+    site: "@MERNMail",
+    title: "Contact Us - MERNMail",
+    description:
+      "Have questions about MERNMail? Need technical support? Visit our Contact Us page to find various ways to get in touch with our team, including email, and our official support channel.",
+    images: [
+      `${process.env.NEXT_PUBLIC_WEBSITE_URL}/metadata/mernmail-cover.png`
+    ],
+    creator: "@MERNMail"
+  }
+};
+
+const ContactLayout = ({ children }) => {
+  return <>{children}</>;
+};
+
+export default ContactLayout;
diff --git a/app/(root)/contact/page.jsx b/app/(root)/contact/page.jsx
new file mode 100644
index 0000000..9dfd5b1
--- /dev/null
+++ b/app/(root)/contact/page.jsx
@@ -0,0 +1,138 @@
+"use client";
+
+import HCaptcha from "@hcaptcha/react-hcaptcha";
+import { Send } from "lucide-react";
+import { useRef, useState } from "react";
+import { emails } from "@/constants";
+import { isEmail } from "validator";
+import SocialIcons from "@/components/SocialIcons";
+
+function Contact() {
+  const [name, setName] = useState("");
+  const [email, setEmail] = useState("");
+  const [message, setMessage] = useState("");
+  const [status, setStatus] = useState("");
+  const [hCaptchaToken, setHCaptchaToken] = useState(null);
+  const captchaRef = useRef();
+
+  return (
+    <main className="max-w-screen-lg mx-auto px-4 py-6 gap-2 flex flex-col">
+      <h1 className="text-center text-4xl md:text-6xl py-12 md:py-16 font-bold">
+        Contact us
+      </h1>
+      <div className="flex flex-col md:flex-row mb-6">
+        <form
+          className="border-border border bg-card text-card-foreground rounded-lg mx-2 md:mx-4 max-md:mb-8 p-6 w-full self-center"
+          onSubmit={async (e) => {
+            e.preventDefault();
+            try {
+              const res = await fetch("/api/contact", {
+                method: "POST",
+                body: JSON.stringify({
+                  captchaToken: hCaptchaToken,
+                  name: name,
+                  email: email,
+                  message: message
+                }),
+                headers: {
+                  "Content-Type": "application/json",
+                  Accept: "application/json"
+                }
+              });
+
+              if (res.status == 200) {
+                setStatus("Your message has been sent.");
+              } else {
+                setStatus("Uh oh! Something went wrong.");
+              }
+            } catch (error) {
+              console.error(error);
+              setStatus("Uh oh! Something went wrong.");
+            }
+            setHCaptchaToken(null);
+            captchaRef.current.resetCaptcha();
+            setName("");
+            setEmail("");
+            setMessage("");
+          }}
+        >
+          <label htmlFor="contact-name" className="block mb-2">
+            Name
+          </label>
+          <input
+            onChange={(e) => {
+              setName(e.target.value);
+            }}
+            value={name}
+            id="contact-name"
+            className="block mb-4 bg-accent text-accent-foreground w-full rounded-md px-2 py-1 focus:outline focus:outline-2 focus:outline-primary"
+          />
+          <label htmlFor="contact-email" className="block mb-2">
+            Email
+          </label>
+          <input
+            type="email"
+            onChange={(e) => {
+              setEmail(e.target.value);
+            }}
+            value={email}
+            id="contact-email"
+            className="block mb-4 bg-accent text-accent-foreground w-full rounded-md px-2 py-1 focus:outline focus:outline-2 focus:outline-primary"
+          />
+          <label htmlFor="contact-message" className="block mb-2">
+            Message
+          </label>
+          <textarea
+            onChange={(e) => {
+              setMessage(e.target.value);
+            }}
+            value={message}
+            id="contact-message"
+            className="block h-44 bg-accent text-accent-foreground w-full rounded-md px-2 py-1 focus:outline focus:outline-2 focus:outline-primary"
+          />
+          <div className="my-5">
+            <HCaptcha
+              ref={captchaRef}
+              sitekey={process.env.NEXT_PUBLIC_HCAPTCHA_SITE_KEY}
+              onVerify={(token) => {
+                setHCaptchaToken(token);
+              }}
+            />
+          </div>
+          {status ? <p className="my-5">{status}</p> : ""}
+          <button
+            type="submit"
+            className="bg-primary text-primary-foreground p-2 rounded-md text-center w-full hover:bg-primary/75 disabled:bg-primary/50 transition-colors"
+            disabled={!name || !email || !isEmail(email) || !message}
+          >
+            <Send className="inline align-top mr-2" />
+            <span className="align-middle">Send</span>
+          </button>
+        </form>
+        <div className="border-border border bg-card text-card-foreground rounded-lg mx-2 md:mx-4 px-9 py-6 w-full md:max-w-96 self-center">
+          <ul className="mb-6">
+            {emails.map((email, index) => (
+              <li key={index} className="flex items-center my-4">
+                <email.icon className="mr-2 shrink-0" size={24} />
+                <span>
+                  <a
+                    href={email.url}
+                    title={`Send an email to ${email.email}`}
+                    className="text-muted-foreground hover:text-accent-foreground transition-colors duration-200"
+                  >
+                    {email.email}
+                  </a>
+                </span>
+              </li>
+            ))}
+          </ul>
+          <div className="text-center space-x-3 py-4 border-border border-t border-b">
+            <SocialIcons />
+          </div>
+        </div>
+      </div>
+    </main>
+  );
+}
+
+export default Contact;
diff --git a/app/api/contact/route.js b/app/api/contact/route.js
new file mode 100644
index 0000000..0d7f792
--- /dev/null
+++ b/app/api/contact/route.js
@@ -0,0 +1,195 @@
+import nodemailer from "nodemailer";
+import { NextResponse } from "next/server";
+import dns from "dns/promises";
+import { isEmail, escape } from "validator";
+
+const CONTACT_MESSAGE_FIELDS = {
+  name: "Name",
+  email: "Email",
+  message: "Message"
+};
+
+export const transporter = nodemailer.createTransport({
+  host: process.env.EMAIL_SERVER,
+  port: parseInt(process.env.EMAIL_PORT ? process.env.EMAIL_PORT : "25"),
+  secure: Boolean(process.env.EMAIL_SECURE ? process.env.EMAIL_SECURE : false),
+  auth: {
+    user: process.env.EMAIL_USER,
+    pass: process.env.EMAIL_PASS
+  }
+});
+
+const generateEmailContent = (data) => {
+  const stringData = Object.entries(data).reduce(
+    (str, [key, val]) =>
+      str +
+      (key == "captchaToken"
+        ? ""
+        : `${CONTACT_MESSAGE_FIELDS[key] || key}: ${val.replace(/\n/g, "\n")} \n\n`),
+    ""
+  );
+
+  const htmlData = Object.entries(data).reduce(
+    (str, [key, val]) =>
+      str +
+      (key == "captchaToken"
+        ? ""
+        : `<h3 class="form-heading">${escape(
+            CONTACT_MESSAGE_FIELDS[key] || key
+          )}</h3><p class="form-answer">${escape(val).replace(
+            /\n/g,
+            "<br/>"
+          )}</p>`),
+    ""
+  );
+
+  return {
+    text: stringData,
+    html: `<!DOCTYPE html>
+      <html>
+      <head>
+          <title>Contact Email</title>
+          <meta charset="utf-8"/>
+          <meta name="viewport" content="width=device-width, initial-scale=1"/>
+          <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+          <style type="text/css">
+          body, table, td, a { -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; }
+          table { border-collapse: collapse !important; }
+          body { height: 100% !important; margin: 0 !important; padding: 0 !important; width: 100% !important; }
+          @media screen and (max-width: 525px) {
+              .wrapper { width: 100% !important; max-width: 100% !important; }
+              .responsive-table { width: 100% !important; }
+              .padding { padding: 10px 5% 15px 5% !important; }
+              .section-padding { padding: 0 15px 50px 15px !important; }
+          }
+          .form-container { margin-bottom: 24px; padding: 20px; border: 1px dashed #ccc; }
+          .form-heading { color: #2a2a2a; font-family: "Helvetica Neue", "Helvetica", "Arial", sans-serif; font-weight: 400; text-align: left; line-height: 20px; font-size: 18px; margin: 0 0 8px; padding: 0; }
+          .form-answer { color: #2a2a2a; font-family: "Helvetica Neue", "Helvetica", "Arial", sans-serif; font-weight: 300; text-align: left; line-height: 20px; font-size: 16px; margin: 0 0 24px; padding: 0; }
+          div[style*="margin: 16px 0;"] { margin: 0 !important; }
+          </style>
+      </head>
+      <body style="margin: 0 !important; padding: 0 !important; background: #fff">
+          <div style="display: none; font-size: 1px; color: #fefefe; line-height: 1px; max-height: 0px; max-width: 0px; opacity: 0; overflow: hidden;"></div>
+          <table border="0" cellpadding="0" cellspacing="0" width="100%">
+          <tr>
+              <td bgcolor="#ffffff" align="center" style="padding: 10px 15px 30px 15px" class="section-padding">
+              <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 500px" class="responsive-table">
+                  <tr>
+                  <td>
+                      <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                      <tr>
+                          <td>
+                          <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                              <tr>
+                              <td style="padding: 0 0 0 0; font-size: 16px; line-height: 25px; color: #232323;" class="padding message-content">
+                                  <h2>New Contact Message</h2>
+                                  <div class="form-container">${htmlData}</div>
+                              </td>
+                              </tr>
+                          </table>
+                          </td>
+                      </tr>
+                      </table>
+                  </td>
+                  </tr>
+              </table>
+              </td>
+          </tr>
+          </table>
+      </body>
+      </html>`
+  };
+};
+
+export async function POST(req) {
+  if (req.method !== "POST") {
+    return NextResponse.json(
+      { message: "Method Not Allowed" },
+      { status: 405 }
+    );
+  }
+
+  try {
+    const data = await req.json();
+    console.log(data);
+
+    // Verify hCaptcha token
+    const hcaptchaResponse = await fetch(
+      `https://api.hcaptcha.com/siteverify`,
+      {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/x-www-form-urlencoded"
+        },
+        body: `secret=${process.env.HCAPTCHA_SECRET}&response=${data.captchaToken}`
+      }
+    );
+
+    const hcaptchaData = await hcaptchaResponse.json();
+
+    if (!hcaptchaData.success) {
+      return NextResponse.json(
+        { message: "Captcha verification failed." },
+        { status: 400 }
+      );
+    }
+
+    // Check email address
+    if (!isEmail(data.email)) {
+      return NextResponse.json(
+        { message: "Invalid email address" },
+        { status: 400 }
+      );
+    }
+
+    // Check email host
+    const emailDomainMatch = data.email.match(/@([^@]+)/);
+    const emailDomain = emailDomainMatch ? emailDomainMatch[1] : "";
+    let isEmailHostValid = false;
+    try {
+      const mxRecords = await dns.resolveMx(emailDomain);
+      if (mxRecords.length > 0) {
+        for (let i = 0; i < mxRecords.length; i++) {
+          try {
+            const aRecords = await dns.resolve4(mxRecords[i].exchange);
+            if (aRecords.length > 0) {
+              isEmailHostValid = true;
+              break;
+            }
+          } catch (err) {}
+          try {
+            const aaaaRecords = await dns.resolve6(mxRecords[i].exchange);
+            if (aaaaRecords.length > 0) {
+              isEmailHostValid = true;
+              break;
+            }
+          } catch (err) {}
+        }
+      }
+    } catch (err) {}
+    if (!isEmailHostValid) {
+      return NextResponse.json(
+        { message: "Email domain is misconfigured" },
+        { status: 400 }
+      );
+    }
+
+    await transporter.sendMail({
+      from: process.env.EMAIL_CONTACT_ADDRESS,
+      to: process.env.EMAIL_CONTACT_DEST,
+      subject: "Contact Email",
+      ...generateEmailContent(data)
+    });
+
+    return NextResponse.json(
+      { message: "Email sent successfully" },
+      { status: 200 }
+    );
+  } catch (error) {
+    console.error("Error sending email:", error);
+    return NextResponse.json(
+      { message: "Internal Server Error" },
+      { status: 500 }
+    );
+  }
+}
diff --git a/constants/index.jsx b/constants/index.jsx
index 36241ca..af3fec9 100644
--- a/constants/index.jsx
+++ b/constants/index.jsx
@@ -1,4 +1,13 @@
-import { Bird, MonitorSmartphone, Server, Sparkles } from "lucide-react";
+import {
+  Bird,
+  Bug,
+  Mail,
+  MonitorSmartphone,
+  Server,
+  ShieldCheck,
+  Sparkles,
+  WebhookIcon
+} from "lucide-react";
 
 export const headerLinks = {
   nav: [
@@ -111,3 +120,26 @@ export const footerLinks = {
     }
   }
 };
+
+export const emails = [
+  {
+    icon: Mail,
+    email: "support@mernmail.org",
+    url: "mailto:support@mernmail.org"
+  },
+  {
+    icon: WebhookIcon,
+    email: "webmaster@mernmail.org",
+    url: "mailto:webmaster@mernmail.org"
+  },
+  {
+    icon: Bug,
+    email: "bugreports@mernmail.org",
+    url: "mailto:bugreports@mernmail.org"
+  },
+  {
+    icon: ShieldCheck,
+    email: "vulnerability-reports@mernmail.org",
+    url: "mailto:vulnerability-reports@mernmail.org"
+  }
+];
diff --git a/package-lock.json b/package-lock.json
index 0e4efe7..50611e0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,17 +8,20 @@
       "name": "mernmail-website",
       "version": "0.1.0",
       "dependencies": {
+        "@hcaptcha/react-hcaptcha": "^1.11.0",
         "@tailwindcss/typography": "^0.5.15",
         "globby": "^14.0.2",
         "lucide-react": "^0.454.0",
         "next": "^15.0.2",
         "next-themes": "^0.4.3",
+        "nodemailer": "^6.9.16",
         "prismjs": "^1.29.0",
         "prop-types": "^15.8.1",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-markdown": "^9.0.1",
-        "rehype-prism": "^2.3.3"
+        "rehype-prism": "^2.3.3",
+        "validator": "^13.12.0"
       },
       "devDependencies": {
         "@commitlint/cli": "^19.5.0",
@@ -72,6 +75,17 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.26.0",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.26.0.tgz",
+      "integrity": "sha512-FDSOghenHTiToteC/QRlv2q3DhPZ/oOXTBoirfWNx1Cx3TMVcGWQtMMmQcSvb/JjpNeGzx8Pq/b4fKEJuWm1sw==",
+      "dependencies": {
+        "regenerator-runtime": "^0.14.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@commitlint/cli": {
       "version": "19.5.0",
       "resolved": "https://registry.npmjs.org/@commitlint/cli/-/cli-19.5.0.tgz",
@@ -530,6 +544,24 @@
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       }
     },
+    "node_modules/@hcaptcha/loader": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/@hcaptcha/loader/-/loader-1.2.4.tgz",
+      "integrity": "sha512-3MNrIy/nWBfyVVvMPBKdKrX7BeadgiimW0AL/a/8TohNtJqxoySKgTJEXOQvYwlHemQpUzFrIsK74ody7JiMYw=="
+    },
+    "node_modules/@hcaptcha/react-hcaptcha": {
+      "version": "1.11.0",
+      "resolved": "https://registry.npmjs.org/@hcaptcha/react-hcaptcha/-/react-hcaptcha-1.11.0.tgz",
+      "integrity": "sha512-UKHtzzVMHLTGwab5pgV96UbcXdyh5Qyq8E0G5DTyXq8txMvuDx7rSyC+BneOjWVW0a7O9VuZmkg/EznVLRE45g==",
+      "dependencies": {
+        "@babel/runtime": "^7.17.9",
+        "@hcaptcha/loader": "^1.2.1"
+      },
+      "peerDependencies": {
+        "react": ">= 16.3.0",
+        "react-dom": ">= 16.3.0"
+      }
+    },
     "node_modules/@humanwhocodes/config-array": {
       "version": "0.13.0",
       "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.13.0.tgz",
@@ -8065,6 +8097,14 @@
       "integrity": "sha512-d9VeXT4SJ7ZeOqGX6R5EM022wpL+eWPooLI+5UpWn2jCT1aosUQEhQP214x33Wkwx3JQMvIm+tIoVOdodFS40g==",
       "dev": true
     },
+    "node_modules/nodemailer": {
+      "version": "6.9.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.16.tgz",
+      "integrity": "sha512-psAuZdTIRN08HKVd/E8ObdV6NO7NTBY3KsC30F7M4H1OnmLCUNaS56FpYxyb26zWLSyYF9Ozch9KYHhHegsiOQ==",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/normalize-path": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
@@ -8977,6 +9017,11 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/regenerator-runtime": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.14.1.tgz",
+      "integrity": "sha512-dYnhHh0nJoMfnkZs6GmmhFknAGRrLznOu5nc9ML+EJxGvrx6H7teuevqVqCuPcPK//3eDrrjQhehXVx9cnkGdw=="
+    },
     "node_modules/regexp.prototype.flags": {
       "version": "1.5.3",
       "resolved": "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.5.3.tgz",
@@ -10507,6 +10552,14 @@
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="
     },
+    "node_modules/validator": {
+      "version": "13.12.0",
+      "resolved": "https://registry.npmjs.org/validator/-/validator-13.12.0.tgz",
+      "integrity": "sha512-c1Q0mCiPlgdTVVVIJIrBuxNicYE+t/7oKeI9MWLj3fh/uq2Pxh/3eeWbVZ4OcGW1TUf53At0njHw5SMdA3tmMg==",
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
     "node_modules/vfile": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/vfile/-/vfile-6.0.3.tgz",
diff --git a/package.json b/package.json
index 1541b5f..ada0aed 100644
--- a/package.json
+++ b/package.json
@@ -12,17 +12,20 @@
     "cz": "cz"
   },
   "dependencies": {
+    "@hcaptcha/react-hcaptcha": "^1.11.0",
     "@tailwindcss/typography": "^0.5.15",
     "globby": "^14.0.2",
     "lucide-react": "^0.454.0",
     "next": "^15.0.2",
     "next-themes": "^0.4.3",
+    "nodemailer": "^6.9.16",
     "prismjs": "^1.29.0",
     "prop-types": "^15.8.1",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-markdown": "^9.0.1",
-    "rehype-prism": "^2.3.3"
+    "rehype-prism": "^2.3.3",
+    "validator": "^13.12.0"
   },
   "devDependencies": {
     "@commitlint/cli": "^19.5.0",