Randomize the deck of tiles

board-shared/src/game.rs

@@ -1,5 +1,6 @@
 use crate::board::Board;
-use crate::tile::{Digit, Operator, Tile};
+use crate::deck::{EmptyDeckError, RngDeck};
+use crate::tile::{Digit, Tile};
 
 #[derive(Default, Debug, Clone, PartialEq)]
 pub struct Game {
@@ -31,12 +32,15 @@ impl Hand {
         )
     }
 
-    pub fn complete(&mut self) {
+    pub fn complete(&mut self, deck: &mut RngDeck) -> Result<(), EmptyDeckError> {
         for _ in 0..self.count_missing_operators() {
-            self.tiles.push(Tile::Operator(Operator::Add));
+            self.tiles
+                .push(Tile::Operator(deck.rand_operator().ok_or(())?));
         }
-        for n in 0..self.count_missing_numbers() {
-            self.tiles.push(Tile::Digit(Digit::new((n % 10) as u8)));
+        for _ in 0..self.count_missing_numbers() {
+            self.tiles
+                .push(Tile::Digit(Digit::new(deck.rand_digit().ok_or(())?)));
         }
+        Ok(())
     }
 }