added a function to download images to current directory

src/main.rs

@@ -3,11 +3,13 @@ pub mod args;
 
 use clap::Parser;
 use futures::{stream, StreamExt};
+use indicatif::ProgressBar;
 use regex::Regex;
 use reqwest::Client;
 use tokio::time::{sleep, Duration};
 
 use std::process::ExitCode;
+use std::io::Write;
 
 #[tokio::main]
 async fn main() -> ExitCode {
@@ -98,11 +100,10 @@ async fn main() -> ExitCode {
                                         "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[1;31mimage url not found\x1b[0m"
                                     ));
                                 } else {
-                                    this_prog.finish_with_message(format!(
-                                        "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[32mfound image url: {img_url}\x1b[0m"
-                                    ));
+                                    download_file(&img_url, this_prog, i, urls_ammount).await;
+
                                 }
-                                break img_url;
+                                break;
                             }
                             Err(_) => {
                                 this_prog
@@ -147,3 +148,39 @@ fn extract_img_url(html: &str) -> Result<String, &'static str> {
         }
     }
 }
+
+async fn download_file(img_url: &str, this_prog: ProgressBar, i: usize, urls_ammount: usize) {
+    let args = args::Args::parse();
+
+    let file_name = Regex::new(r"[^/]+$")
+        .unwrap()
+        .find(img_url)            
+        .map(|m| m.as_str())
+        .unwrap();
+
+    let downl_img = Client::new()
+        .get(img_url)
+        .header("User-Agent", &args.user_agent)
+        .send()
+        .await
+        .unwrap()
+        .bytes()
+        .await
+        .unwrap();
+
+    match std::fs::File::open(file_name) {
+        Ok(_) => {
+            this_prog.finish_with_message(format!(
+                "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[32mfile exists, skipping...\x1b[0m"
+            ));
+        }
+        Err(_) => {
+
+            this_prog.finish_with_message(format!(
+                "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[32mdownloaded image: {img_url}\x1b[0m"
+            ));
+            let mut file = std::fs::File::create(file_name).unwrap();
+            file.write_all(&downl_img).unwrap();
+        }
+    }
+}