use anyhow::Result;
use tokio::time::Instant;

#[tokio::main]
async fn main() -> Result<()> {
    let start = Instant::now();
    let client = reqwest::Client::new();
    let mut res = client
        .get("https://speed.hetzner.de/100MB.bin")
        .send()
        .await?;
    let latency: u128 = start.elapsed().as_millis();

    println!("latency: {latency}ms");
    let download_start = Instant::now();
    // let len = res.content_length().unwrap();
    // res.bytes().await?;
    // let time = download_start.elapsed().as_nanos() as f64 / 1_000_000_000 as f64;
    // let bytes_per_second = len / time as u64;
    // println!("bytes per second: {}", bytes_per_second);
    let mut len = 0;
    while let Some(c) = res.chunk().await? {
        let time = download_start.elapsed().as_nanos() as f64 / 1_000_000_000 as f64;
        len += c.len();
        let bytes_per_second = len as f64 / time as f64;
        dbg!(&bytes_per_second);
    }

    Ok(())
}