From 3b8b6b36e37b5b042ea5f4507c44ddcd2b236694 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sat, 10 Feb 2024 18:33:29 -0700
Subject: [PATCH] Implement a basic Display for chessfriend_moves::Move

---
 moves/src/moves.rs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/moves/src/moves.rs b/moves/src/moves.rs
index ab0c0da..f4f9b21 100644
--- a/moves/src/moves.rs
+++ b/moves/src/moves.rs
@@ -89,6 +89,41 @@ impl Move {
     fn special(&self) -> u16 {
         self.0 & 0b11
     }
+
+    fn _transfer_char(&self) -> char {
+        if self.is_capture() || self.is_en_passant() {
+            'x'
+        } else {
+            '-'
+        }
+    }
+}
+
+impl fmt::Display for Move {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        if let Some(castle) = self.castle() {
+            match castle {
+                Castle::KingSide => return write!(f, "0-0"),
+                Castle::QueenSide => return write!(f, "0-0-0"),
+            }
+        }
+
+        write!(
+            f,
+            "{}{}{}",
+            self.origin_square(),
+            self._transfer_char(),
+            self.target_square()
+        )?;
+
+        if let Some(promotion) = self.promotion() {
+            write!(f, "={}", promotion)?;
+        } else if self.is_en_passant() {
+            write!(f, " e.p.")?;
+        }
+
+        Ok(())
+    }
 }
 
 impl fmt::Debug for Move {