Rust Integration

Using reqwest and serde.

use serde::Deserialize;
use reqwest::header::HeaderMap;

#[derive(Deserialize)]
struct Confidence {
    confidence_score: u8,
    status: String,
    alias_status: String,
    canonical_email: Option<String>,
    is_role_based: bool,
}

#[derive(Deserialize)]
struct Validations {
    is_disposable: bool,
}

#[derive(Deserialize)]
struct ApiResponse {
    confidence: Confidence,
    validations: Validations,
}

async fn validate_email(email: &str, api_key: &str) -> Result<bool, reqwest::Error> {
    let client = reqwest::Client::new();
    let url = format!("https://api.checkemail.dev/validate?email={}", email);
    
    let mut headers = HeaderMap::new();
    headers.insert("x-api-key", api_key.parse().unwrap());

    let res = client.get(url)
        .headers(headers)
        .send()
        .await?
        .json::<ApiResponse>()
        .await?;

    let confidence = res.confidence;
    let validations = res.validations;

    if confidence.status == "DISPOSABLE" || validations.is_disposable {
        return Ok(false);
    }

    Ok(confidence.status == "LIKELY")
}