remove redundant functions and add comments

src/app.rs

@@ -15,17 +15,18 @@ pub struct App {
     /// check if app is running
     pub running: bool,
     pub conn: Connection,
-    pub queue_list: ContentList<String>,
+    pub browser: FileBrowser,            // Directory browser
-    pub pl_list: ContentList<String>,
+    pub queue_list: ContentList<String>, // Stores the current playing queue
-    pub selected_tab: SelectedTab,
+    pub pl_list: ContentList<String>,    // Stores list of playlists
-    pub browser: FileBrowser,
+    pub selected_tab: SelectedTab,       // Used to switch between tabs
 
     // Search
-    pub inputmode: InputMode,
+    pub inputmode: InputMode,   // Defines input mode, Normal or Search
-    pub search_input: String,
+    pub search_input: String,   // Stores the userinput to be searched
-    pub cursor_position: usize,
+    pub cursor_position: usize, // Stores the cursor position
 
-    // add to playlists
+    // playlist variables
+    // used to show playlist popup
     pub playlist_popup: bool,
     pub append_list: ContentList<String>,
 }
@@ -90,12 +91,13 @@ impl App {
         });
     }
 
+    // Rescan the queue into queue_list
     pub fn update_queue(&mut self) {
         self.queue_list.list.clear();
         Self::get_queue(&mut self.conn, &mut self.queue_list.list);
     }
 
-    pub fn get_playlist(conn: &mut Client) -> AppResult<Vec<String>> {
+    fn get_playlist(conn: &mut Client) -> AppResult<Vec<String>> {
         let list: Vec<String> = conn.playlists()?.iter().map(|p| p.clone().name).collect();
         Ok(list)
     }
@@ -110,11 +112,7 @@ impl App {
         Ok(list)
     }
 
-    pub fn update_playlist(&mut self) -> AppResult<()> {
+    /// Handles the <Space> event key
-        Self::get_playlist(&mut self.conn.conn)?;
-        Ok(())
-    }
-
     pub fn handle_add_or_remove_from_current_playlist(&mut self) -> AppResult<()> {
         match self.selected_tab {
             SelectedTab::DirectoryBrowser => {
@@ -170,6 +168,7 @@ impl App {
         Ok(())
     }
 
+    /// Cycle through tabs
     pub fn cycle_tabls(&mut self) {
         self.selected_tab = match self.selected_tab {
             SelectedTab::Queue => SelectedTab::DirectoryBrowser,
@@ -178,6 +177,7 @@ impl App {
         };
     }
 
+    /// handles the Enter event on the directory browser
     pub fn handle_enter(&mut self) -> AppResult<()> {
         let browser = &mut self.browser;
         let (t, path) = browser.filetree.get(browser.selected).unwrap();
@@ -218,14 +218,6 @@ impl App {
         Ok(())
     }
 
-    pub fn search_song(&mut self) -> AppResult<()> {
-        if let Some(filename) = self.conn.get_full_path(&self.search_input) {
-            let song = self.conn.get_song_with_only_filename(&filename);
-            self.conn.push(&song)?;
-        }
-        Ok(())
-    }
-
     // Cursor movements
     pub fn move_cursor_left(&mut self) {
         let cursor_moved_left = self.cursor_position.saturating_sub(1);

src/browser.rs

@@ -6,6 +6,7 @@ use mpd::Song;
 use crate::{app::AppResult, connection::Connection};
 
 #[derive(Debug)]
+/// struct for working with directory browser tab in rmptui
 pub struct FileBrowser {
     pub filetree: Vec<(String, String)>,
     pub selected: usize,
@@ -61,9 +62,10 @@ impl FileBrowser {
             }
         }
 
+
+        // Add metadata
         dir_vec.extend(file_vec);
         self.filetree = dir_vec;
-
         self.songs.clear();
         for (t, song) in self.filetree.iter() {
             if t == "file" {
@@ -121,6 +123,7 @@ impl FileBrowser {
         // }
     }
 
+    /// handles going back event
     pub fn handle_go_back(&mut self, conn: &mut Connection) -> AppResult<()> {
         if self.prev_path != "." {
             let r = self.path.rfind("/").unwrap();

src/connection.rs

@@ -8,6 +8,7 @@ pub type Result<T> = core::result::Result<T, Error>;
 pub type Error = Box<dyn std::error::Error>;
 
 #[derive(Debug)]
+/// struct storing the mpd Client related stuff
 pub struct Connection {
     pub conn: Client,
     pub songs_filenames: Vec<String>,

src/error.rs

@@ -1,6 +0,0 @@
-#[derive(Debug)]
-pub enum Error {
-    DmenuNotInstalled,
-    FzfNotInstalled,
-}
-

src/handler.rs

@@ -1,12 +1,11 @@
 use crate::browser::FileExtension;
-use std::{path::Path, time::Duration};
-
 use crate::{
     app::{App, AppResult, SelectedTab},
     ui::InputMode,
 };
 use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 use rust_fuzzy_search::{self, fuzzy_search_sorted};
+use std::{path::Path, time::Duration};
 
 pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
     if app.inputmode == InputMode::Editing {
@@ -65,6 +64,9 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
             }
         }
 
+        // Keybind for searching
+        //
+        // Keybinds for when the search prompt is visible
         match key_event.code {
             KeyCode::Esc => {
                 app.inputmode = InputMode::Normal;
@@ -108,6 +110,10 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
 
             _ => {}
         }
+
+    // Playlist popup keybinds
+    //
+    // Keybind for when the "append to playlist" popup is visible
     } else if app.playlist_popup {
         match key_event.code {
             KeyCode::Char('q') | KeyCode::Esc => {
@@ -183,6 +189,9 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
             _ => {}
         }
     } else {
+        // Global keymaps
+        //
+        // Keymaps related to all the tabs
         match key_event.code {
             // Quit
             KeyCode::Char('q') => app.quit(),
@@ -343,7 +352,8 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
 
             // Update MPD database
             KeyCode::Char('U') => {
-                app.conn.conn.update()?;
+                app.conn.conn.rescan()?;
+                app.browser.update_directory(&mut app.conn)?;
             }
 
             // Search for songs