implement yt-dlp FFI and working bot command to download

src/dl/download.rs

@@ -0,0 +1,28 @@
+use pyo3::prelude::*;
+use tokio::task::{spawn_blocking, JoinError};
+
+pub async fn download_url(url: String) -> Result<bool, JoinError> {
+    spawn_blocking(move || {
+        let res: PyResult<()> = Python::with_gil(|py| {
+            let yt_dlp = PyModule::import(py, "yt_dlp")?;
+            let yt = yt_dlp.getattr("YoutubeDL")?;
+
+            let yt_obj = yt.call((), None)?;
+
+            yt_obj.call_method0("__enter__")?;
+            yt_obj.call_method1("download", (url,))?;
+            yt_obj.call_method0("__exit__")?;
+
+            Ok(())
+        });
+
+        match res {
+            Ok(_) => true,
+            Err(e) => {
+                println!("{}", e);
+                false
+            }
+        }
+    })
+    .await
+}

src/main.rs

@@ -1,6 +1,5 @@
 use anyhow;
 use dotenv::dotenv;
-use teloxide::dispatching::dialogue::GetChatId;
 use std::env;
 use std::fmt;
 use std::str;
@@ -12,7 +11,7 @@ use teloxide::dispatching::UpdateHandler;
 use teloxide::{prelude::*, update_listeners::Polling, utils::command::BotCommands};
 
 mod dl;
-use dl::download::download;
+use dl::download::download_url;
 
 type State = ();
 type MyDialogue = Dialogue<State, InMemStorage<State>>;
@@ -62,8 +61,8 @@ fn schema() -> UpdateHandler<HandlerErr> {
 
     let command_handler =
         teloxide::filter_command::<Command, _>()
-            .branch(case![Command::Test].endpoint(test));
-            //.branch(case![Command::Download(download)].endpoint(download));
+            .branch(case![Command::Test].endpoint(test))
+            .branch(case![Command::Download(url)].endpoint(download));
 
     let message_handler = Update::filter_message().branch(command_handler);
     let raw_message_handler = Update::filter_message().branch(dptree::endpoint(handle_message));
@@ -88,6 +87,15 @@ async fn test(bot: Bot, msg: Message) -> HandlerResult {
     Ok(())
 }
 
+async fn download(bot: Bot, msg: Message, url: String) -> HandlerResult {
+    match download_url(url).await {
+        Ok(_) => bot.send_message(msg.chat.id, "downloaded"),
+        Err(_) => bot.send_message(msg.chat.id, "failed to download")
+    }.await?;
+
+    Ok(())
+}
+
 async fn handle_message(_bot: Bot, _dialogue: MyDialogue, msg: Message) -> HandlerResult {
     println!(
         "msg {} kind {:?} text {}",