pub mod fk_get {
use reqwest::Url;
use std::io::{stdout, Write};
use std::time::{Duration, Instant};
use tokio::io::{AsyncWriteExt};
pub async fn download_file(url: &Url) -> Result<(), Box<dyn std::error::Error>> {
let mut response = reqwest::get(url.as_ref()).await?;
let start_time = Instant::now();
let file_name = url
.path_segments()
.and_then(|segments| segments.last())
.unwrap_or("file.bin");
let content_length = response.content_length().unwrap_or(0);
let mut file = tokio::fs::File::create(file_name).await?;
let mut downloaded_size = 0;
while let Some(chunk) = response.chunk().await? {
let len = chunk.len();
downloaded_size += len;
file.write_all(&chunk).await?;
let elapsed_time = start_time.elapsed();
let elapsed_seconds = elapsed_time.as_secs_f64();
let download_speed = downloaded_size as f64 / elapsed_seconds / 1_000_000.0;
let remaining_size = content_length as f64 - downloaded_size as f64;
let remaining_time = if download_speed > 0.0 {
remaining_size as f64 / download_speed
} else {
f64::INFINITY
};
print!(
"\rDownloaded {:.2} MB of {:.2} MB ({:.2}%) at {:.2} Mbps, {} remaining",
downloaded_size as f64 / 1_000_000.0,
content_length as f64 / 1_000_000.0,
downloaded_size as f64 / content_length as f64 * 100.0,
download_speed,
format_duration(Duration::from_secs(remaining_time as u64)),
);
stdout().flush()?;
}
let elapsed_time = start_time.elapsed();
let elapsed_seconds = elapsed_time.as_secs_f64();
let file_size = downloaded_size as f64;
let download_speed = file_size / elapsed_seconds / 1_000_000.0;
println!(
"\nDownloaded {:.2} MB in {:.2} seconds ({:.2} Mbps)",
file_size / 1_000_000.0,
elapsed_seconds,
download_speed
);
Ok(())
}
fn format_duration(d: Duration) -> String {
let secs = d.as_secs();
let mins = secs / 60;
let secs = secs % 60;
let hours = mins / 60;
let mins = mins % 60;
if mins > 0 {
format!("{}m{}s", mins, secs)
} else {
format!("{}s", secs)
}
}
}