From 4cac2dc414890eb03fa1fa3f181bb5e7bb3612de Mon Sep 17 00:00:00 2001
From: Baptiste Fouques <baptiste@bat.fr.eu.org>
Date: Thu, 12 Jan 2023 17:27:17 +0100
Subject: [PATCH] implement moves

---
 src/lib.rs         | 19 ++++++++++++++++++-
 src/main.rs        | 11 +++++++++++
 src/uci_command.rs | 10 ++++++++++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index ee621f1..eefd09d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -143,12 +143,29 @@ impl<Fi: BufRead, Fo:  Write> UciEngine<Fi, Fo> {
         }
     }
 
+    pub fn pull_raw(&mut self) -> Option<String> {
+        let mut data = String::new();
+        match self.source.read_line(&mut data) {
+            Ok(0) => {self.terminate("Chess engine closed connection."); None},
+            Ok(_) => {info!("↜ {}", data); Some(data.clone())},
+            Err(reason) => {warn!("Unable to read from engine: {reason}"); None},
+        }
+    }
+
     pub fn push(&mut self, command: GuiCommand) {
         let command_str = command.to_string();
         match self.destination.write(&command_str.as_bytes()){
-            Ok(n) if n == command_str.len() => info!("→ gui: {command_str} "),
+            Ok(n) if n == command_str.len() => info!("→ gui: {command_str}"),
             Ok(n) => warn!("⚠ gui: {command_str} truncated at {n}"),
             Err(reason) => warn!("Unable to send command {command_str}: {reason}"),
         }
     }
+
+    pub fn push_raw(&mut self, data: &str){
+        match self.destination.write(data.as_bytes()) {
+            Ok(n) if n == data.len() => info!("↝ raw: {data}"),
+            Ok(n) => warn!("⚠ raw: {data} truncated at {n}"),
+            Err(reason) => warn!("Unable to send raw {data}: {reason}"),
+        }
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index d48d2b6..1e3a8aa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,11 @@
 extern crate chess_uci;
 
+use chess::ChessMove;
 use chess_uci::*;
 
 use std::process::{Command, Stdio};
 use std::io::BufReader;
+use std::str::FromStr;
 
 pub fn main(){
     env_logger::init();
@@ -26,4 +28,13 @@ pub fn main(){
     println!("Engine: {} \nby: {}", 
              if let Some(name) = uci.name() {name} else {"Not defined".to_string()},
              if let Some(author) = uci.author() {author} else {"Not defined".to_string()});
+
+    uci.new_game();
+    uci.make_move(ChessMove::from_str("e2e4").expect("error converting e2e4"));
+
+    uci.push_raw("d\n");
+
+    uci.push_raw("quit\n");
+    while uci.pull_raw() != None {}
+
 }
diff --git a/src/uci_command.rs b/src/uci_command.rs
index 4c7e20c..9e76bf1 100644
--- a/src/uci_command.rs
+++ b/src/uci_command.rs
@@ -101,10 +101,20 @@ pub fn parse(message: &mut String) -> Result<EngineCommand,&'static str> {
 }
 
 impl fmt::Display for GuiCommand {
+
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result{
         match self {
             GuiCommand::Uci => write!(f, "uci\n"),
             GuiCommand::UciNewGame => write!(f, "ucinewgame\n"),
+            GuiCommand::Position { position, moves } => {
+                write!(f, "position {} moves {}\n", 
+                       match position { None => "startpos".to_string(), 
+                                       Some(board) if *board == Board::default() => "startpos".to_string(),
+                                       Some(board) =>"fen ".to_string() +  &board.to_string()},
+                       join(moves.into_iter().map(|x| if let Action::MakeMove(chessmove) = x 
+                                      {chessmove.to_string()} else {"".to_string()}), "")
+                )
+            }
             a => unimplemented!("{:?}", a),
         }