Add GameStates, typed enums, and App::new constructor

src/app/widgets/main_menu.rs

@@ -1,41 +1,86 @@
-use crate::app::{View, widgets::keybindings_widget};
+use crate::app::{App, View, widgets::keybindings_widget};
+use clap::ValueEnum;
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Constraint, Layout, Rect},
-    style::Color,
+    style::Stylize,
+    text::Line,
     widgets::{Block, Borders, Paragraph, Widget},
 };
 
-pub fn main_menu_widget(area: Rect, buf: &mut Buffer) {
+fn view_options() -> Vec<(usize, String)> {
+    View::value_variants()
+        .iter()
+        .enumerate()
+        .map(|(i, v)| {
+            let name = v
+                .to_possible_value()
+                .unwrap()
+                .get_name()
+                .replace('-', " ")
+                .to_uppercase()
+                .to_string();
+            (i, name)
+        })
+        .filter(|(_, v)| v != "MAIN MENU")
+        .collect()
+}
+
+pub fn main_menu_widget(app: &App, area: Rect, buf: &mut Buffer) {
     let vertical_layout: Layout =
-        Layout::vertical([Constraint::Percentage(87), Constraint::Percentage(13)]);
+        Layout::vertical([Constraint::Percentage(88), Constraint::Percentage(12)]);
 
     let [main_menu_area, keybindings_area] = vertical_layout.areas(area);
 
+    Block::new()
+        .borders(Borders::LEFT | Borders::TOP | Borders::RIGHT)
+        .render(main_menu_area, buf);
+
+    let main_menu_areas: Vec<Rect> = main_menu_area.layout_vec(&Layout::vertical([
+        Constraint::Percentage(50),
+        Constraint::Percentage(50),
+    ]));
+
     {
+        let title_area: Rect = main_menu_areas[0].centered_vertically(Constraint::Percentage(50));
+
         let title_text: String = vec![
             r" __    __             _         _____                        _     ",
-            r"/ / /\ \ \__ _ _ __  (_)_ __   /__   \_   _ _ __  _ __   ___| |___",
+            r"/ / /\ \ \__ _ _ __  (_)_ __   /__   \_   _ _ __  _ __   ___| |___ ",
             r"\ \/  \/ / _` | '__| | | '_ \    / /\/ | | | '_ \| '_ \ / _ \ / __|",
             r" \  /\  / (_| | |    | | | | |  / /  | |_| | | | | | | |  __/ \__ \",
             r"  \/  \/ \__,_|_|    |_|_| |_|  \/    \__,_|_| |_|_| |_|\___|_|___/",
         ]
         .join("\n");
 
-        let title: Paragraph<'_> = Paragraph::new(title_text)
+        Paragraph::new(title_text)
             .alignment(Alignment::Center)
-            .style(Color::Yellow)
-            .block(
-                Block::default()
-                    .borders(Borders::LEFT | Borders::RIGHT | Borders::TOP)
-                    .style(Color::Gray),
-            );
-
-        title.render(main_menu_area, buf);
+            .yellow()
+            .block(Block::new().gray().borders(Borders::LEFT | Borders::RIGHT))
+            .render(title_area, buf);
     }
 
     {
-        let keybindings: Paragraph<'_> = keybindings_widget(View::MainMenu);
-        keybindings.render(keybindings_area, buf);
+        let options_area: Rect = main_menu_areas[1];
+
+        let lines: Vec<Line<'_>> = view_options()
+            .into_iter()
+            .map(|(i, view)| {
+                let styled = if app.game_states.main_menu_state.selected_view == i {
+                    Line::from(format!("> {}", view)).yellow()
+                } else {
+                    Line::from(view).white()
+                };
+                styled
+            })
+            .collect();
+
+        Paragraph::new(lines)
+            .alignment(Alignment::Center)
+            .green()
+            .block(Block::new().gray().borders(Borders::LEFT | Borders::RIGHT))
+            .render(options_area, buf);
     }
+
+    keybindings_widget(View::MainMenu).render(keybindings_area, buf);
 }