Add initial_screen config variable

Resolves #616

README.md

@@ -83,12 +83,12 @@ ncspot is available via Scoop: `scoop install ncspot`
 ## Audio backends
 
 By default ncspot is built using the PulseAudio backend.  To make it use the
-PortAudio backend (e.g. for *BSD or macOS) or Rodio backend (e.g. for Windows), 
+PortAudio backend (e.g. for *BSD or macOS) or Rodio backend (e.g. for Windows),
 you need to recompile ncspot with the respective features:
 
 * `cargo run --no-default-features --features
   portaudio_backend,cursive/pancurses-backend`
-* `cargo run --no-default-features --features 
+* `cargo run --no-default-features --features
   rodio_backend,cursive/pancurses-backend`
 
 ### Key Bindings
@@ -189,6 +189,8 @@ Possible configuration values are:
 
 * `command_key`: Key to open command line <single character>, set to `:` by
   default
+* `initial_screen`: Screen to show after startup
+  <`"library"|"search"|"queue"|"cover" (if enabled)`> (default is `"library"`)
 * `use_nerdfont`: Turn nerdfont glyphs on/off <true/false>
 * `flip_status_indicators`: By default the statusbar will show a play icon when
    a track is playing and a pause icon when playback is stopped. If this setting

src/config.rs

@@ -17,6 +17,7 @@ pub const CLIENT_ID: &str = "d420a117a32841c2b3474932e49fb54b";
 #[derive(Clone, Serialize, Deserialize, Debug, Default)]
 pub struct ConfigValues {
     pub command_key: Option<char>,
+    pub initial_screen: Option<String>,
     pub default_keybindings: Option<bool>,
     pub keybindings: Option<HashMap<String, String>>,
     pub theme: Option<ConfigTheme>,

src/main.rs

@@ -16,7 +16,7 @@ use cursive::traits::Identifiable;
 use librespot_core::authentication::Credentials;
 use librespot_core::cache::Cache;
 use librespot_playback::audio_backend;
-use log::{info, trace};
+use log::{error, info, trace};
 
 mod album;
 mod artist;
@@ -230,7 +230,17 @@ async fn main() -> Result<(), String> {
     layout.add_screen("cover", coverview.with_name("cover"));
 
     // initial screen is library
-    layout.set_screen("library");
+    let initial_screen = cfg
+        .values()
+        .initial_screen
+        .clone()
+        .unwrap_or("library".to_string());
+    if layout.has_screen(&initial_screen) {
+        layout.set_screen(initial_screen);
+    } else {
+        error!("Invalid screen name: {}", initial_screen);
+        layout.set_screen("library");
+    }
 
     let cmd_key = |cfg: Arc<Config>| cfg.values().command_key.unwrap_or(':');
 

src/ui/layout.rs

@@ -86,6 +86,10 @@ impl Layout {
         self
     }
 
+    pub fn has_screen(&self, id: &str) -> bool {
+        self.screens.contains_key(id)
+    }
+
     pub fn set_screen<S: Into<String>>(&mut self, id: S) {
         if let Some(view) = self.get_top_view() {
             view.on_leave();