How to Receive Messages on Discord with Cloudflare Functions

How to receive messages from an HTML form directly on your Discord using Cloudflare Pages and Cloudflare Functions.

We will divide the process into four main parts: creating the HTML form, configuring the webhook on Discord, configuring the Worker on Cloudflare and Deploying the project.

Creating an HTML Form

First, you need an HTML form to collect user data. The basic form might look like this:

8b05045a5be5764f313ed5b9168a17e6
49099650ebdc5f3125501fa170048923
  93f0f5c25f18dab9d176bd4f6de5d30e
    1fc2df4564f5324148703df3b6ed50c1
    b2386ffb911b14667cb8f0f91ea547a7Formulário de Contato6e916e0f7d1e588d4f442bf645aedb2f
    e6a2ef4717ed03faee9e40cd54c601e7
  9c3bca370b5104690d9ef395f2c5f8d1
  6c04bd5ca3fcae76e30b72ad730ca86d
    41a62721f8f6faf85d3f3c442e120146
      32748748547056b73a05801fcce610b9Nome:8c1ecd4bb896b2264e0711597d40766c
      d54606a9be00961829c6e14160b24f20

      fb17cf704df615c5ede8c45530d33a1dEmail:8c1ecd4bb896b2264e0711597d40766c
      1080a2b74ca5aa671651a7e5cb19b3b6

      67ea4e327d93b644e8207e5594cd3243Assunto:8c1ecd4bb896b2264e0711597d40766c
      ea7d10cd0f3e06a24f7d5ec80f4ed662

      30ec3257503b5021be72e6d720187196Mensagem:8c1ecd4bb896b2264e0711597d40766c
      8f90f65b244ff37f833edf9160eb4a3540587128eee8df8f03d0b607fe983014

      2fde95773b8f5f556e457b384dfac0eeEnviar65281c5ac262bf6d81768915a4a77ac0
    f5a47148e367a6035fd7a2faa965022e
  36cc49f0c466276486e50c850b7e4956
73a6ac4ed44ffec12cee46588e518a5e

This form sends a POST request to the /api/submit endpoint when the user clicks "Submit".

Configuring Discord Webhook

To receive messages on Discord, you need to set up a webhook. Follow the steps below:

1. Create a Discord Channel: If you don't already have a dedicated channel, create one on your Discord server.
2. Configure the Webhook: Go to "Channel Settings" > "Integrations" > "Webhooks" and click "Create Webhook".
3. Name the Webhook: Give your webhook a name and copy the generated URL.

Configuring Cloudflare Pages and Workers

Now that you have the form and webhook configured, it's time to configure Cloudflare Worker to process requests and send messages to Discord.

1: Create a Project on GitHub

Create a repository on GitHub for your project. In your terminal, clone the repository and configure the project structure:

mkdir meu-projeto
cd meu-projeto
git init
git remote add origin git@github.com:b44895184412195210c28bd5c3af3a4c/3f8699a903798851377304c0547685d2.git

2: Project Structure

Organize your project as follows:

meu-projeto
├── functions
│   └── api
│       └── submit.js
└── public
    └── index.html

3: Configure the Worker

In the functions/api/submit.js file, add the following code to process the form and send the message to Discord:

export async function onRequestPost(ctx) {
    try {
        return await handleRequest(ctx);
    } catch(e) {
        return new Response(`${e.message}\n${e.stack}`, { status: 500 });
    }
}

async function handleRequest({ request, env }) {
    const data = await request.formData();

    const name = data.get('name');
    const email = data.get('email');
    const subject = data.get('subject');
    const message = data.get('message');
    const captcha = data.get('h-captcha-response');

    if (!name || !email || !subject || !message || !captcha) {
        return new Response('Verifique se os campos estão preenchidos!', { status: 400 });
    }

    const captchaVerified = await verifyHcaptcha(
        captcha,
        request.headers.get('cf-connecting-ip'),
        env.HCAPTCHA_SECRET,
        env.HCAPTCHA_SITE_KEY
    );

    if (!captchaVerified) {
        return new Response('Captcha inválido!', { status: 400 });
    }

    await sendDiscordMessage(name, email, subject, message, env.DISCORD_WEBHOOK_URL);

    return new Response('OK');
}

async function verifyHcaptcha(response, ip, secret, siteKey) {
    const res = await fetch('https://hcaptcha.com/siteverify', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
        },
        body: `response=${response}&remoteip=${ip}&secret=${secret}&sitekey=${siteKey}`
    });

    const json = await res.json();
    return json.success;
}

async function sendDiscordMessage(name, email, subject, message, webhookUrl) {
    await fetch(webhookUrl, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            username: 'Formulário de Contato',
            embeds: [{
                color: 0x0099ff,
                title: 'Nova Mensagem',
                fields: [
                    {
                        name: 'Nome',
                        value: name,
                        inline: true,
                    },
                    {
                        name: 'Email',
                        value: email,
                        inline: true,
                    },
                    {
                        name: 'Assunto',
                        value: subject,
                    },
                    {
                        name: 'Mensagem',
                        value: "```

" + message + "

```",
                    }
                ]
            }]
        }),
    });
}

Deploy

With everything configured, let's deploy the project:

1. Commit and push the code to GitHub:
   

   git add .
   git commit -m "Projeto configurado"
   git push origin main
   

2. In Cloudflare Pages, connect the GitHub repository, select the main branch, and set the build output to public.

3. To avoid exposing your sensitive keys and settings, configure environment variables in Cloudflare Pages. Access your Cloudflare Pages dashboard. Select the project and go to Settings > Environment Variables. Add the following variables:

   • DISCORD_WEBHOOK_URL with the Discord webhook URL.
   • HCAPTCHA_SECRET with the hCaptcha secret.
   • HCAPTCHA_SITE_KEY with the hCaptcha website key.

After setup, your website will be accessible via a *.pages.dev subdomain and ready to use. When a user submits the form, a message will be sent directly to your Discord channel.

Congratulations! You have successfully configured an HTML form that sends messages to Discord using Cloudflare Functions.

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