Create a separate Ui struct

rs/src/ui.rs

@@ -1,5 +1,6 @@
 use crate::board;
 use crate::board::GridAxis;
+use std::io::BufRead;
 
 impl std::fmt::Display for board::Color {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
@@ -52,3 +53,30 @@ impl std::fmt::Display for board::Board {
         Ok(())
     }
 }
+
+pub struct Ui {
+    board: board::Board,
+}
+
+impl Ui {
+    pub fn new() -> Self {
+        let mut board = board::Board::new();
+        board.reset();
+        Ui {
+            board,
+        }
+    }
+    pub fn run(&mut self) -> Result<(), ()> {
+        let stdin = std::io::stdin();
+        let mut input_lines = stdin.lock().lines();
+        loop {
+            match input_lines.next() {
+                None => break Ok(()),
+                Some(line) => match &line.unwrap()[..] {
+                    "get_state" => println!("{}", self.board),
+                    _ => break Err(()),
+                },
+            }
+        }
+    }
+}