ui: make long conversation lines wrap

src/main.rs

@@ -115,17 +115,35 @@ impl App {
         }
     }
 
+    fn format_line<'a>(text: &str, prefix: &'a str, prefix_style: Style, max_width: usize) -> Text<'a> {
+        let avail_width = max_width - prefix.len();
+        let indent = " ".repeat(prefix.len());
+        let wrap_options = textwrap::Options::new(avail_width).initial_indent(prefix).subsequent_indent(&indent);
+        let wrapped: Vec<Line> = textwrap::wrap(text, wrap_options)
+            .iter()
+            .enumerate()
+            .map(|(idx, s)| {
+                if idx == 0 {
+                    Line::from_iter([Span::from(prefix).style(prefix_style), Span::from(s[prefix.len()..].to_string())])
+                } else {
+                    Line::from(s.to_string())
+                }
+            }).collect();
+
+        Text::from_iter(wrapped)
+    }
+
     fn draw_conversation(&mut self, frame: &mut Frame, area: Rect) {
-        let items: Vec<Line> = self.scene.conversation().iter().rev().map(|entry| {
+        let width = area.width.into();
+        let items: Vec<Text> = self.scene.conversation().iter().rev().map(|entry| {
             match entry {
-                ConversationEntry::User(text) => Line::from_iter([Span::from("Argee: ").style(ratatui::style::Color::Magenta), Span::from(text)]),
-                ConversationEntry::Eva(text) => Line::from_iter([Span::from("Eva: ").style(ratatui::style::Color::Cyan), Span::from(text)]),
-                ConversationEntry::ShipComputer(text) => Line::from_iter([Span::from("Ship Computer: ").style(ratatui::style::Color::Green), Span::from(text)]),
-                ConversationEntry::StageDirection(text) => Line::from_iter([text]).style(ratatui::style::Color::Yellow),
-                ConversationEntry::SystemMessage(text) => Line::from_iter([text]).style(ratatui::style::Color::DarkGray)
+                ConversationEntry::User(text) => Self::format_line(text, "Argee: ", Style::new().fg(style::Color::Magenta), width),
+                ConversationEntry::Eva(text) => Self::format_line(text, "Eva: ", Style::new().fg(style::Color::Cyan), width),
+                ConversationEntry::ShipComputer(text) => Self::format_line(text, "Ship Computer: ", Style::new().fg(style::Color::Green), width),
+                ConversationEntry::StageDirection(text) => Self::format_line(text, "", Style::new(), width).style(ratatui::style::Color::Yellow),
+                ConversationEntry::SystemMessage(text) => Self::format_line(text, "", Style::new(), width).style(ratatui::style::Color::DarkGray)
             }
         }).collect();
-        // FIXME: We need to somehow make long list items wrap. https://github.com/ratatui/ratatui/issues/128#issuecomment-1613918499
         // TODO: Would be nice to be able to scroll a longer conversation with the scroll wheel, or with page up/down
         frame.render_stateful_widget(
             List::new(items)