1 files changed, 60 insertions, 49 deletions

diff --git a/src/client/core.rs b/src/client/core.rs
index 0b2e683..7e43fb7 100644
--- a/src/client/core.rs
+++ b/src/client/core.rs
@@ -4,13 +4,14 @@ use crate::client::games::response::{
     parse_roulette_response, parse_spin_response,
 };
 use crate::client::games::roulette::Direction;
+use crate::client::view::{Command, RouletteView, View};
 use crate::client::ui::{
     command_names, completion_lines, display_width, help_lines, history_lines,
     input_cursor_column, parse_bet_arg, record_history,
 };
 use crate::crash::{CrashState, multiplier_at};
 use crate::history::MAX_HISTORY;
-use crate::roulette::Bets;
+use crate::roulette::{BetTarget, Bets};
 use std::time::{Duration, Instant};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -41,13 +42,10 @@ pub enum InteractiveCommand {
 pub enum Effect {
     /// Append lines to the scrolling transcript.
     Print(Vec<String>),
-    /// Replace the game board region in place.
-    ReplaceRegion(Vec<String>),
-    /// Run the roulette wheel animation, then draw the final board lines.
-    AnimateRoulette {
-        winning: u8,
-        final_lines: Vec<String>,
-    },
+    /// Draw the current view in the board region.
+    Render(View),
+    /// Run the roulette wheel animation, then draw the final view.
+    AnimateRoulette { winning: u8, view: View },
     /// Remove the game board region.
     ClearRegion,
     /// Redraw the command prompt. `text` is the input without the `> ` prefix.
@@ -215,11 +213,8 @@ impl ClientCore {
                     self.balance = Some(result.balance);
                     let winning = result.number;
                     self.game.apply_roulette_result(result);
-                    let final_lines = self.board_lines().unwrap_or_default();
-                    vec![Effect::AnimateRoulette {
-                        winning,
-                        final_lines,
-                    }]
+                    let view = self.view();
+                    vec![Effect::AnimateRoulette { winning, view }]
                 }
                 Err(message) => {
                     self.game.set_error(message);
@@ -380,53 +375,62 @@ impl ClientCore {
     }
 
     fn handle_roulette_key(&mut self, key: Key) -> Vec<Effect> {
-        let direction = match key {
-            Key::Up => Some(Direction::Up),
-            Key::Down => Some(Direction::Down),
-            Key::Left => Some(Direction::Left),
-            Key::Right => Some(Direction::Right),
-            _ => None,
-        };
-        if let Some(direction) = direction {
-            let cursor = self.game.roulette_cursor().moved(direction);
-            self.game.set_roulette_cursor(&cursor);
-            return self.board_effects();
-        }
-
         match key {
             Key::CtrlC => vec![Effect::Quit],
-            Key::Char('q') => {
-                self.game.end_game();
-                vec![
-                    Effect::ClearRegion,
-                    Effect::Print(vec!["Game exited.".to_string()]),
-                ]
+            Key::Up => self.command(Command::MoveCursor(Direction::Up)),
+            Key::Down => self.command(Command::MoveCursor(Direction::Down)),
+            Key::Left => self.command(Command::MoveCursor(Direction::Left)),
+            Key::Right => self.command(Command::MoveCursor(Direction::Right)),
+            Key::Enter => self.command(Command::PlaceBet),
+            Key::Char(' ') => self.command(Command::Spin),
+            Key::Char('c') => self.command(Command::ClearBets),
+            Key::Char('+') | Key::Char('=') => self.command(Command::AdjustChip(10)),
+            Key::Char('-') => self.command(Command::AdjustChip(-10)),
+            Key::Char('q') => self.command(Command::Leave),
+            _ => Vec::new(),
+        }
+    }
+
+    /// Apply a semantic command. Both frontends drive the core through this.
+    pub fn command(&mut self, command: Command) -> Vec<Effect> {
+        match command {
+            Command::MoveCursor(direction) => {
+                let cursor = self.game.roulette_cursor().moved(direction);
+                self.game.set_roulette_cursor(&cursor);
+                self.board_effects()
             }
-            Key::Char(' ') => self.spin_roulette(),
-            Key::Char('c') => {
+            Command::PlaceBet => match self.game.roulette_cursor().target() {
+                Some(target) => self.place_roulette_chip_on(target),
+                None => Vec::new(),
+            },
+            Command::PlaceBetAt(target) => self.place_roulette_chip_on(target),
+            Command::ClearBets => {
                 self.game.set_roulette_bets(&Bets::default());
                 self.game.set_roulette_status("place");
                 self.board_effects()
             }
-            Key::Char('+') | Key::Char('=') => {
-                let chip = self.game.roulette_chip().saturating_add(10);
-                self.game.set_roulette_chip(chip);
+            Command::SetChip(chip) => {
+                self.game.set_roulette_chip(chip.max(10));
                 self.board_effects()
             }
-            Key::Char('-') => {
-                let chip = self.game.roulette_chip().saturating_sub(10).max(10);
+            Command::AdjustChip(delta) => {
+                let chip = (self.game.roulette_chip() as i64 + delta).max(10) as u64;
                 self.game.set_roulette_chip(chip);
                 self.board_effects()
             }
-            Key::Enter => self.place_roulette_chip(),
-            _ => Vec::new(),
+            Command::Spin => self.spin_roulette(),
+            Command::Leave => {
+                self.crash_started = None;
+                self.game.end_game();
+                vec![
+                    Effect::ClearRegion,
+                    Effect::Print(vec!["Game exited.".to_string()]),
+                ]
+            }
         }
     }
 
-    fn place_roulette_chip(&mut self) -> Vec<Effect> {
-        let Some(target) = self.game.roulette_cursor().target() else {
-            return Vec::new();
-        };
+    fn place_roulette_chip_on(&mut self, target: BetTarget) -> Vec<Effect> {
         let mut bets = self.game.roulette_bets();
         bets.add(target, self.game.roulette_chip());
         self.place_roulette_bets(bets)
@@ -950,11 +954,18 @@ impl ClientCore {
         Some(game.render(state).lines().map(str::to_string).collect())
     }
 
+    /// Snapshot of the current screen for a frontend to draw.
+    pub fn view(&self) -> View {
+        if let Some(state) = self.game.get_current_state() {
+            if state.game_type == "roulette" {
+                return View::Roulette(RouletteView::from_state(state));
+            }
+        }
+        View::Text(self.board_lines().unwrap_or_default())
+    }
+
     fn board_effects(&self) -> Vec<Effect> {
-        self.board_lines()
-            .map(Effect::ReplaceRegion)
-            .into_iter()
-            .collect()
+        vec![Effect::Render(self.view())]
     }
 
     fn prompt_effects(&self) -> Vec<Effect> {