introduce logging to important functions

src/bot/bot.rs

@@ -106,6 +106,7 @@ async fn bot_download(bot: Bot, msg: Message, url: String) -> HandlerResult {
     let output_path = match download(url.as_str()).await {
         Ok(path) => path,
         Err(e) => {
+            event!(Level::ERROR, "{}", e.to_string());
             bot.send_message(msg.chat.id, e.to_string()).await?;
             return Ok(());
         }

src/bot/log.rs

@@ -17,7 +17,9 @@ pub fn log_init() {
         .with_writer(io::stderr)
         .with_filter(LevelFilter::ERROR);
 
-    let file_layer = fmt::layer().with_writer(log_appender);
+    let file_layer = fmt::layer()
+        .with_writer(log_appender)
+        .with_filter(LevelFilter::INFO);
 
     tracing_subscriber::registry()
         .with(stderr_layer)

src/bot/util.rs

@@ -16,12 +16,3 @@ pub fn make_database_url() -> String {
     let path = Path::new(VAR_LIB).join("mk-dl-bot.db");
     format!("sqlite://{}", path.as_os_str().to_str().unwrap()).to_string()
 }
-
-pub fn make_log_path() -> String {
-    Path::new(VAR_LOG)
-        .join("mk-dl-bot.log")
-        .as_os_str()
-        .to_str()
-        .unwrap()
-        .to_string()
-}

src/dl.rs

@@ -1,8 +1,6 @@
 use std::fmt;
 use std::fs;
-use std::path::Path;
-
-use teloxide::types::Message;
+use tracing::{event, Level};
 
 use self::spawn::SpawnError;
 use self::yt_dlp::{YtDlp, YtDlpError, YtDlpFormat, YtDlpInfo};
@@ -60,11 +58,15 @@ fn file_exists(path: &str) -> bool {
 
 pub fn delete_if_exists(path: &str) {
     if file_exists(path) {
-        fs::remove_file(path);
+        if let Err(e) = fs::remove_file(path) {
+            event!(Level::ERROR, "{}", e);
+        }
     }
 }
 
 pub async fn download(url: &str) -> Result<String, DownloadError> {
+    event!(Level::INFO, "url {}", url);
+
     let info = YtDlp::load_info(url).await?;
     let av = match info.best_av_format() {
         Some(av) => av,

src/dl/spawn.rs

@@ -36,8 +36,7 @@ impl fmt::Display for SpawnError {
 
 /* !!! The argument list could be exploited in a way to inject malicious arguments !!!
 !!! and alter the way program executes and/or gain access to system             !!! */
-pub async fn spawn(program: &str, args: &[&str]) -> Result<Output, SpawnError>
-{
+pub async fn spawn(program: &str, args: &[&str]) -> Result<Output, SpawnError> {
     {
         let cmd_args = args.join(" ");
         event!(Level::INFO, "{} {}", program, cmd_args);

src/dl/yt_dlp.rs

@@ -4,6 +4,7 @@ use ordered_float::OrderedFloat;
 use serde::Deserialize;
 use serde_json;
 use std::fs;
+use tracing::{event, Level};
 
 #[derive(Deserialize, Debug)]
 pub struct YtDlpFormat {
@@ -106,7 +107,10 @@ impl YtDlpInfo {
 
         match format {
             Some(vf) => Some(vf.format),
-            None => None,
+            None => {
+                event!(Level::ERROR, "no av format for {}", self.id);
+                None
+            }
         }
     }
 
@@ -124,7 +128,10 @@ impl YtDlpInfo {
 
         match format {
             Some(af) => Some(af.format),
-            None => None,
+            None => {
+                event!(Level::ERROR, "no audio format for {}", self.id);
+                None
+            }
         }
     }
 }