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The Forms client does not require API credentials. Forms are identified by a UUID that you obtain from the Paubox dashboard.

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Creating a client

Standalone (creates its own HTTP connection pool): 
use paubox::FormsClient;

let client = FormsClient::new();
Shared connection pool (reuses the HTTP client from an existing PauboxClient): 
let forms = email_client.forms();

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Get a form

Retrieve a form’s metadata, field schema, and rendered HTML/CSS: 
let form = client.get_form("your-form-uuid").await?;

println!("Title: {}", form.title);
if let Some(html) = &form.form_html {
    println!("HTML: {}", html);
}
Form fields:
FieldTypeDescription
titleStringDisplay name of the form
form_jsonOption<serde_json::Value>Parsed field schema
form_htmlOption<String>Rendered HTML for embedding
form_cssOption<String>Associated stylesheet
activeboolWhether the form is accepting submissions
submission_countu64Number of submissions received

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Submit a form

Build a FormSubmission and call submit_form: 
use paubox::FormSubmission;
use serde_json::json;

let submission = FormSubmission::builder()
    .form_data(json!({
        "first_name": "Jane",
        "last_name":  "Smith",
        "email":      "jane@example.com"
    }))
    .build()?;

client.submit_form("your-form-uuid", &submission).await?;
submit_form returns Ok(()) on success (HTTP 201).

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Submitting with file attachments

The maximum total request size is 250 MB. FormAttachment::from_bytes base64-encodes automatically: 
use paubox::{FormAttachment, FormSubmission};
use std::fs;

let data = fs::read("consent.pdf")?;
let attachment = FormAttachment::from_bytes("consent.pdf", &data);

let submission = FormSubmission::builder()
    .form_data(json!({ "first_name": "Jane" }))
    .attachment(attachment)
    .build()?;

client.submit_form("your-form-uuid", &submission).await?;
If you already have base64-encoded content: 
let attachment = FormAttachment::from_base64("consent.pdf", encoded_string);

​
Error handling

use paubox::PauboxError;

match client.get_form("your-form-uuid").await {
    Ok(form) => println!("Form: {}", form.title),
    Err(PauboxError::Http { status, body }) => {
        eprintln!("HTTP {}: {}", status, body);
    }
    Err(e) => eprintln!("Error: {}", e),
}