added chunked downloads, added progress bars, cleaned up javalsai's bad code

Co-authored-by: ErrorNoInternet <errornointernet@envs.net>

.gitignore

@@ -1 +1,2 @@
 /target
+/downloads

Cargo.lock

@@ -833,16 +833,6 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
-[[package]]
-name = "lock_api"
-version = "0.4.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
-dependencies = [
- "autocfg",
- "scopeguard",
-]
-
 [[package]]
 name = "log"
 version = "0.4.22"
@@ -973,29 +963,6 @@ version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f38d5652c16fde515bb1ecef450ab0f6a219d619a7274976324d5e377f7dceba"
 
-[[package]]
-name = "parking_lot"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
-dependencies = [
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.9.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
-dependencies = [
- "cfg-if",
- "libc",
- "redox_syscall",
- "smallvec",
- "windows-targets",
-]
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -1083,15 +1050,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.5.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b6dfecf2c74bce2466cabf93f6664d6998a69eb21e39f4207930065b27b771f"
-dependencies = [
- "bitflags",
-]
-
 [[package]]
 name = "regex"
 version = "1.11.0"
@@ -1253,12 +1211,6 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
 [[package]]
 name = "security-framework"
 version = "2.11.1"
@@ -1332,15 +1284,6 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
-[[package]]
-name = "signal-hook-registry"
-version = "1.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9e9e0b4211b72e7b8b6e85c807d36c212bdb33ea8587f7569562a84df5465b1"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -1463,9 +1406,7 @@ dependencies = [
  "bytes",
  "libc",
  "mio",
- "parking_lot",
  "pin-project-lite",
- "signal-hook-registry",
  "socket2",
  "tokio-macros",
  "windows-sys 0.52.0",

Cargo.toml

@@ -4,10 +4,10 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-async-std = "1.13.0"
+async-std = "1"
-clap = { version = "4.5.20", features = ["derive"] }
+clap = { version = "4", features = ["derive"] }
-futures = "0.3.31"
+futures = "0"
-indicatif = "0.17.8"
+indicatif = "0"
-regex = "1.11.0"
+regex = "1"
-reqwest = { version = "0.12.8", features = ["blocking"] }
+reqwest = { version = "0", features = ["blocking"] }
-tokio = { version = "1", features = ["full"] }
+tokio = { version = "1", features = ["macros", "rt-multi-thread"] }

src/main.rs

@@ -8,8 +8,10 @@ use regex::Regex;
 use reqwest::Client;
 use tokio::time::{sleep, Duration};
 
-use std::process::ExitCode;
 use std::io::Write;
+use std::process::ExitCode;
+
+const BAR_LENGTH: u64 = 8;
 
 #[tokio::main]
 async fn main() -> ExitCode {
@@ -21,10 +23,16 @@ async fn main() -> ExitCode {
         tags_binding
             .split(' ')
             .filter(|item| !item.is_empty())
-            .map(|item| item.to_owned())
+            .map(std::borrow::ToOwned::to_owned)
             .collect()
     });
-    let uri_tags: String = tags.into_iter().intersperse(String::from("+")).collect();
+    let tags_folder = &tags.join("+");
+    let uri_tags = tags
+        .into_iter()
+        .intersperse(String::from("+"))
+        .collect::<String>();
+
+    let _ = std::fs::create_dir(tags_folder);
 
     let client = Client::builder()
         .user_agent(&args.user_agent)
@@ -55,74 +63,65 @@ async fn main() -> ExitCode {
         };
 
         let mut urls = post_html(&client).await;
-
-        let mut wait_time = 5000;
-
         if urls.is_empty() {
-            for reconnection_attempts in 0..4 {
+            let mut reconnection_attempts = 0;
-                println!("no urls found, retrying in {} seconds...", wait_time / 1000);
+            loop {
-                sleep(Duration::from_millis(wait_time)).await;
+                println!("no urls found, retrying in 5 seconds...");
+                sleep(Duration::from_millis(5000)).await;
 
                 urls = post_html(&client).await;
-
                 if !urls.is_empty() {
                     println!("urls found! continuing...");
                     break;
                 }
 
-                if reconnection_attempts == 3 {
+                reconnection_attempts += 1;
-                    println!("no urls found in 4 attempts, exiting...");
+                if reconnection_attempts == 12 {
+                    println!("no urls found in 1 minute, exiting...");
                     return ExitCode::FAILURE;
                 }
-
-                wait_time += 5000;
             }
         }
 
         let multi_prog = indicatif::MultiProgress::new();
-        let urls_ammount = urls.len();
+        let urls_amount = urls.len();
         let responses = stream::iter(urls.into_iter().enumerate())
             .map(|(i, url)| {
                 let i = i + 1;
                 let client = &client;
-                let this_bar = indicatif::ProgressBar::new_spinner();
+                let this_bar = indicatif::ProgressBar::new(BAR_LENGTH);
-                this_bar.enable_steady_tick(Duration::from_millis(50));
+                this_bar.set_style(indicatif::ProgressStyle::with_template("[{bar}] {msg}").unwrap().progress_chars("=> "));
-                let this_prog = multi_prog.insert(i, this_bar);
+                let this_bar = multi_prog.insert(i, this_bar);
                 async move {
                     // "thread"
                     loop {
-                        this_prog.set_message(format!("\x1b[30m[{i: >4}/{urls_ammount}] \x1b[36mscraping {url:?}\x1b[0m"));
+                        this_bar.set_message(format!("\x1b[37m[{i: >4}/{urls_amount}] \x1b[36mscraping {url:?}\x1b[0m"));
                         let resp = client.get(&url).send().await.unwrap();
-                        match extract_img_url(&resp.text().await.unwrap()) {
+                        if let Ok(img_url) = extract_img_url(&resp.text().await.unwrap()) {
-                            Ok(img_url) => {
                             if img_url.is_empty() {
-                                    this_prog.abandon_with_message(format!(
+                                this_bar.abandon_with_message(format!(
-                                        "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[1;31mimage url not found\x1b[0m"
+                                    "\x1b[37m[{i: >4}/{urls_amount}] \x1b[1;31mimage url not found\x1b[0m"
                                 ));
                             } else {
-                                    download_file(&img_url, this_prog, i, urls_ammount).await;
+                                download_file(&img_url, this_bar, i, urls_amount, tags_folder).await;
-
                             }
                             break;
                         }
-                            Err(_) => {
+
-                                this_prog
+                        this_bar
                             .set_message(format!(
-                                            "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[31mratelimited, retrying after {}ms\x1b[0m",
+                                    "\x1b[37m[{i: >4}/{urls_amount}] \x1b[31mratelimited, retrying after {}ms\x1b[0m",
                                     args.delay.as_millis())
                                 );
                         tokio::time::sleep(args.delay).await;
-                                continue;
-                            }
-                        }
                     }
                 }
             })
             .buffered(args.jobs);
-        let _ = responses.for_each(|_| async {}).await;
+        let _ = responses.for_each(|()| async {}).await;
     }
 
-    return ExitCode::SUCCESS;
+    ExitCode::SUCCESS
 }
 
 fn extract_urls(html: &str) -> Vec<String> {
@@ -140,16 +139,20 @@ fn extract_img_url(html: &str) -> Result<String, &'static str> {
             .find(html)
     {
         Ok(img_url.as_str().to_string())
-    } else {
+    } else if html.contains("503 Rate limiting") {
-        if html.contains("503 Rate limiting") {
         Err("ratelimited")
     } else {
         Ok(String::new())
     }
-    }
 }
 
-async fn download_file(img_url: &str, this_prog: ProgressBar, i: usize, urls_ammount: usize) {
+async fn download_file(
+    img_url: &str,
+    this_bar: ProgressBar,
+    i: usize,
+    urls_amount: usize,
+    tags_folder: &str,
+) {
     let args = args::Args::parse();
 
     let file_name = Regex::new(r"[^/]+$")
@@ -158,29 +161,31 @@ async fn download_file(img_url: &str, this_prog: ProgressBar, i: usize, urls_amm
         .map(|m| m.as_str())
         .unwrap();
 
-    let downl_img = Client::new()
+    let file_path = tags_folder.to_owned() + "/" + file_name;
+
+    let mut file = if std::fs::File::open(&file_path).is_ok() {
+        this_bar.finish_with_message(format!(
+            "\x1b[37m[{i: >4}/{urls_amount}] \x1b[33m{file_name} exists, skipping...\x1b[0m"
+        ));
+        return;
+    } else {
+        std::fs::File::create(file_path).unwrap()
+    };
+
+    let mut res = Client::new()
         .get(img_url)
         .header("User-Agent", &args.user_agent)
         .send()
         .await
-        .unwrap()
-        .bytes()
-        .await
         .unwrap();
-
+    let file_length = res.content_length().unwrap();
-    match std::fs::File::open(file_name) {
+    let mut written = 0;
-        Ok(_) => {
+    while let Some(img_chunk) = res.chunk().await.unwrap() {
-            this_prog.finish_with_message(format!(
+        file.write_all(&img_chunk).unwrap();
-                "\x1b[30m[{i: >4}/{urls_ammount}] \x1b[32mfile exists, skipping...\x1b[0m"
+        written += img_chunk.len();
+        this_bar.set_position((written as f64 / file_length as f64 * BAR_LENGTH as f64) as u64);
+    }
+    this_bar.finish_with_message(format!(
+        "\x1b[37m[{i: >4}/{urls_amount}] \x1b[32mdownloaded {img_url}\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();
-        }
-    }
 }