Rewrite the structure of the gui and cli interfaces

Added a more modular way to add windows

src/ui/gui/windows/song_edit.rs

@@ -0,0 +1,95 @@
+use anyhow::{Result, bail};
+use egui::Color32;
+use crate::ui::gui::Gui;
+
+use super::{State, Window};
+
+
+#[derive(Debug, Default)]
+pub struct GuiSongEditor {
+    song: (String, String),
+    ed_url: String,
+    ed_name: String,
+}
+
+
+impl Window for GuiSongEditor {
+    fn ui(&mut self, state: &mut State, ctx: &egui::Context, open: &mut bool) -> anyhow::Result<()> {
+            let mut save = false;
+            let (playlist, song_name) = self.song.clone();
+
+            if playlist.is_empty() {
+                return Ok(());
+            }
+
+            let Some(song) = state.manifest.get_song(&playlist, &song_name) else {
+                bail!("Failed to get song (1)");
+            };
+            let song = song.clone();
+            
+            egui::Window::new("Song editor")
+                .open(open)
+                .show(ctx, 
+                |ui| {
+
+                ui.horizontal(|ui| {
+                    ui.spacing_mut().item_spacing.x = 0.0;
+                    ui.label("[");
+                    ui.hyperlink_to("link", song.get_url().unwrap());
+                    ui.label("] ");
+                    ui.colored_label(Color32::LIGHT_BLUE, &playlist);
+                    ui.label(": ");
+                    ui.label(&song_name)
+                });
+
+                ui.horizontal(|ui| {
+                    ui.label("Type: ");
+                    ui.label(&song.get_type().to_string());
+                });
+
+                ui.horizontal(|ui| {
+                    ui.label("Name: ");
+                    ui.text_edit_singleline(&mut self.ed_name);
+                });
+                ui.horizontal(|ui| {
+                    ui.label("Url: ");
+                    ui.text_edit_singleline(&mut self.ed_url);
+                });
+
+                if ui.button("Save").clicked() {
+                    save = true;
+                }
+            });
+
+            if save {
+                {
+                    let Some(song) = state.manifest.get_song_mut(&playlist, &song_name) else {
+                        bail!("Failed to get song (2)");
+                    };
+                    
+                    *song.get_url_str_mut() = self.ed_url.clone();
+                }
+
+                let Some(playlist) = state.manifest.get_playlist_mut(&playlist) else {
+                    bail!("Failed to get playlist");
+                };
+
+
+                playlist.remove_song(&song_name);
+                playlist.add_song(self.ed_name.clone(), song);
+                *open = false;
+                let _ = state.manifest.save(None);
+            }
+
+            Ok(())
+        }
+}
+
+impl GuiSongEditor {
+    pub fn set_active_song(&mut self, pname: &String, sname: &String, url: &String) {
+        self.song.0 = pname.clone();
+        self.song.1 = sname.clone();
+        self.ed_name = sname.clone();
+        self.ed_url = url.clone();
+    }
+}