feat : add move classification

src/lib/lichess.ts

@@ -37,9 +37,25 @@ export const getLichessEval = async (
 
     lines.sort(sortLines);
 
+    const bestMove = lines[0].pv[0];
+    const linesToKeep = lines.slice(0, multiPv);
+
+    const isWhiteToPlay = fen.split(" ")[1] === "w";
+
+    if (!isWhiteToPlay) {
+      return {
+        bestMove,
+        lines: linesToKeep.map((line) => ({
+          ...line,
+          cp: line.cp ? -line.cp : line.cp,
+          mate: line.mate ? -line.mate : line.mate,
+        })),
+      };
+    }
+
     return {
-      bestMove: lines[0].pv[0],
-      lines: lines.slice(0, multiPv),
+      bestMove,
+      lines: linesToKeep,
     };
   } catch (error) {
     console.error(error);