main.rs

use std::collections::HashMap;
use serde::{Deserialize, Serialize};
use reqwest::header::CONTENT_TYPE;


#[derive(Serialize, Deserialize, Debug)]
struct GETAPIResponse {
    origin: String,
}

#[derive(Serialize, Deserialize, Debug)]
struct JSONResponse {
    json: HashMap<String, String>,
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {

    // - Create a new client which is re-used between requests
    let client = reqwest::Client::new();

    /// Business logic comes here
    /// ...
    /// ...

    Ok(())
}