Add debug flag

src/cli.rs

@@ -38,7 +38,12 @@ It takes a url and downloads the article content from it and saves it to an epub
                 .long("max_conn")
                 .help("The maximum number of concurrent HTTP connections when downloading articles. Default is 8")
                 .long_help("The maximum number of concurrent HTTP connections when downloading articles. Default is 8.\nNOTE: It is advised to use as few connections as needed i.e between 1 and 50. Using more connections can end up overloading your network card with too many concurrent requests.")
-                .takes_value(true));
+                .takes_value(true))
+        .arg(
+            Arg::with_name("debug")
+                .long("debug")
+                .help("Enable logging of events for debugging")
+                .takes_value(false));
     let arg_matches = app.get_matches();
     let mut urls: Vec<String> = match arg_matches.value_of("file") {
         Some(file_name) => {
@@ -84,6 +89,9 @@ It takes a url and downloads the article content from it and saves it to an epub
         };
         app_config.set_merged(file_name);
     }
+    if arg_matches.is_present("debug") {
+        app_config.toggle_debug(true);
+    }
     app_config
 }
 
@@ -91,6 +99,7 @@ pub struct AppConfig {
     urls: Vec<String>,
     max_conn: usize,
     merged: Option<String>,
+    is_debug: bool,
 }
 
 impl AppConfig {
@@ -99,9 +108,14 @@ impl AppConfig {
             urls: vec![],
             max_conn,
             merged: None,
+            is_debug: false,
         }
     }
 
+    fn toggle_debug(&mut self, is_debug: bool) {
+        self.is_debug = is_debug;
+    }
+
     fn set_urls(&mut self, urls: Vec<String>) {
         self.urls.extend(urls);
     }
@@ -120,4 +134,8 @@ impl AppConfig {
     pub fn merged(&self) -> Option<&String> {
         self.merged.as_ref()
     }
+
+    pub fn is_debug(&self) -> bool {
+        self.is_debug
+    }
 }

src/main.rs

@@ -31,26 +31,29 @@ fn main() {
     let app_config = cli::cli_init();
 
     if !app_config.urls().is_empty() {
-        match UserDirs::new() {
+        if app_config.is_debug() {
-            Some(user_dirs) => {
+            match UserDirs::new() {
-                let home_dir = user_dirs.home_dir();
+                Some(user_dirs) => {
-                let paperoni_dir = home_dir.join(".paperoni");
+                    let home_dir = user_dirs.home_dir();
-                let log_dir = paperoni_dir.join("logs");
+                    let paperoni_dir = home_dir.join(".paperoni");
-                if !paperoni_dir.is_dir() || !log_dir.is_dir() {
+                    let log_dir = paperoni_dir.join("logs");
-                    std::fs::create_dir_all(&log_dir)
+                    if !paperoni_dir.is_dir() || !log_dir.is_dir() {
-                        .expect("Unable to create paperoni directories on home directory for logging purposes");
+                        std::fs::create_dir_all(&log_dir)
+                            .expect("Unable to create paperoni directories on home directory for logging purposes");
+                    }
+                    match flexi_logger::Logger::with_str("paperoni=debug")
+                        .directory(log_dir)
+                        .log_to_file()
+                        .print_message()
+                        .start()
+                    {
+                        Ok(_) => (),
+                        Err(e) => eprintln!("Unable to start logger!\n{}", e),
+                    }
                 }
-                match flexi_logger::Logger::with_str("paperoni=debug")
+                None => eprintln!("Unable to get user directories for logging purposes"),
-                    .directory(log_dir)
+            };
-                    .log_to_file()
+        }
-                    .start()
-                {
-                    Ok(_) => (),
-                    Err(e) => eprintln!("Unable to start logger!\n{}", e),
-                }
-            }
-            None => eprintln!("Unable to get user directories for logging purposes"),
-        };
         download(app_config);
     }
 }