ui: add tui-skeleton for a fun loading animation

src/main.rs

@@ -13,6 +13,7 @@ use tui_input::{Input, backend::crossterm::EventHandler};
 use futures::{StreamExt, future::FutureExt};
 
 use ratatui::prelude::*;
+use tui_skeleton::{AnimationMode, SkeletonList, SkeletonText};
 
 use crate::{events::AudioRecordRequest, prediction::{BandcampResult, PossibleResponse}, scene::{ConversationEntry, PlaylistEntry, Scene, StageActions, StageDirection}, tts::start_tts};
 
@@ -138,15 +139,25 @@ impl App {
     }
 
     fn draw_options(&mut self, frame: &mut Frame, area: Rect) {
-        frame.render_stateful_widget(
-            List::new(self.scene.reply_options().clone())
-                .block(Block::bordered().border_style(style::Color::LightGreen).title("Reply Options (Press 'Ctrl+R' to regenerate, Ctrl+Enter to use)"))
-                .style(ratatui::style::Color::White)
-                .highlight_symbol("> ")
-                .highlight_style(style::Style::new().bold().fg(style::Color::Cyan)),
-            area,
-            &mut self.reply_state
-        );
+        let borders = Block::bordered().border_style(style::Color::LightGreen).title("Reply Options (Press 'Ctrl+R' to regenerate, Ctrl+Enter to use)");
+        if self.scene.reply_options().len() == 0 && self.is_requesting {
+            let list = SkeletonText::new(std::time::SystemTime::now().duration_since(std::time::SystemTime::UNIX_EPOCH).unwrap().as_millis()  as u64)
+                .braille(true)
+                .line_widths(&[0.25, 0.5, 0.4, 0.6])
+                .mode(AnimationMode::Noise)
+                .block(borders);
+            frame.render_widget(list, area);
+        } else {
+            frame.render_stateful_widget(
+                List::new(self.scene.reply_options().clone())
+                    .block(borders)
+                    .style(ratatui::style::Color::White)
+                    .highlight_symbol("> ")
+                    .highlight_style(style::Style::new().bold().fg(style::Color::Cyan)),
+                area,
+                &mut self.reply_state
+            );
+        }
     }
 
     fn draw_user_input(&mut self, frame: &mut Frame, area: Rect) {