create sgf

src/main/client/src/feature/game/BoardSettings.jsx

@@ -6,19 +6,26 @@ import {
   FaVolumeUp,
   FaSearchPlus,
   FaSearchMinus,
+  FaDownload,
 } from "react-icons/fa"
 import {
   useMuteStore,
 } from "src/store.js"
 import {
   useViewStateStore,
 } from "src/layout.js"
+import {
+  base,
+} from "src/util.js"
+
+export function BoardSettings({gameId, black, white}) {
+
 
-export function BoardSettings() {
   return (
     <div className="absolute pl-2 pt-1 flex flex-col items-center">
       <MuteIcon />
       <Zoom />
+      <SaveGameFile gameId={gameId} black={black} white={white} />
     </div>
   )
 }
@@ -66,3 +73,19 @@ function Zoom() {
     </>
   )
 }
+
+function SaveGameFile({gameId, black, white}) {
+  return (
+    <a
+      href={base + "/api/sgf/" + gameId + "/" + black + "_vs_" + white + ".sgf"}
+      target="_blank"
+      download={gameId + "_" + black + "_vs_" + white + ".sgf"}
+      className="mt-[0.25rem]">
+      <IconContext.Provider value={{
+        size: "1.5em",
+      }}>
+        <FaDownload />
+      </IconContext.Provider>
+    </a>
+  )
+}

src/main/client/src/feature/game/Game.jsx

@@ -69,7 +69,7 @@ export function Game() {
     <div
       style={{ width: vw() - sidebarWidth }}
       className="h-full">
-      <BoardSettings />
+      <BoardSettings gameId={gameState.id} black={gameState.black} white={gameState.white} />
       <Board gameState={gameState} setGameState={setGameState} />
       <GamePanel gameState={gameState} setGameState={setGameState} />
     </div>

src/main/java/com/bernd/GameController.java

@@ -11,7 +11,11 @@
 import com.bernd.model.OpenGame;
 import com.bernd.model.ViewGame;
 import com.bernd.util.RandomString;
+import com.bernd.util.SgfCreator;
+import java.security.Principal;
+import java.time.LocalDate;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.messaging.core.MessageSendingOperations;
 import org.springframework.messaging.handler.annotation.MessageMapping;
@@ -23,8 +27,6 @@
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.server.ResponseStatusException;
 
-import java.security.Principal;
-
 import static com.bernd.util.Auth.getPrincipal;
 import static com.bernd.util.Util.COLORS;
 
@@ -144,4 +146,15 @@ public ResponseEntity<?> accept(@RequestBody AcceptRequest acceptRequest) {
     operations.convertAndSend("/topic/lobby/active_games", activeGames.games());
     return ResponseEntity.ok().build();
   }
+
+  @GetMapping("/api/sgf/{id}/{black}_vs_{white}.sgf")
+  public ResponseEntity<String> getSgf(
+      @PathVariable String id) {
+    Game game = games.get(id);
+    if (game == null) {
+      return ResponseEntity.notFound().build();
+    }
+    String sgf = SgfCreator.createSgf(game, LocalDate.now());
+    return ResponseEntity.ok().contentType(MediaType.TEXT_PLAIN).body(sgf);
+  }
 }

src/main/java/com/bernd/game/Board.java

@@ -111,4 +111,5 @@ public static int[][] removeDeadStonesAround(
     }
     return result;
   }
+
 }

src/main/java/com/bernd/util/SgfCreator.java

@@ -0,0 +1,55 @@
+package com.bernd.util;
+
+import com.bernd.model.Game;
+import com.bernd.model.Move;
+import java.time.LocalDate;
+
+public final class SgfCreator {
+
+  public static String createSgf(Game game, LocalDate date) {
+    int twoPass = 0;
+    int asciiAddOn = 97;
+    StringBuilder sb = new StringBuilder();
+    sb.append("(;");
+    sb
+        .append("FF[4]\n")
+        .append("CA[UTF-8]\n")
+        .append("GM[1]\n")
+        .append("DT[" + date.toString() + "]\n")
+        .append("GN[" + game.id() + "]\n")
+        .append("PB[" + game.black() + "]\n")
+        .append("PW[" + game.white() + "]\n")
+        .append("RE[" + (game.gameHasEnded() ? game.getScore() : "?") + "]\n")
+        .append("SZ[" + game.dim() + "]\n");
+    for (Move move : game.moves().moves()) {
+      sb
+          .append(";")
+          .append(getColorFromValue(move.color()))
+          .append("[");
+      if (!move.pass()) {
+        twoPass = 0;
+        sb
+            .append((char) (move.x() + asciiAddOn))
+            .append((char) (move.y() + asciiAddOn));
+      } else {
+        twoPass++;
+        if (twoPass == 2) {
+          sb.append("]\n");
+          break;
+        }
+      }
+      sb
+          .append("]\n");
+    }
+    sb.append(")");
+    return sb.toString();
+  }
+
+  private static String getColorFromValue(int value) {
+    if (value == 32) {
+      return "B";
+    }
+    return "W";
+  }
+
+}

src/test/java/com/bernd/util/SgfCreatorTest.java

@@ -0,0 +1,26 @@
+package com.bernd.util;
+
+import com.bernd.game.Board;
+import com.bernd.game.MoveList;
+import com.bernd.model.Game;
+import com.bernd.model.Move;
+import java.time.LocalDate;
+import java.time.Month;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class SgfCreatorTest {
+
+  @Test
+  void testCreate() {
+    MoveList moveList = MoveList.create(20);
+    moveList.add(new Move(Board.B, 0, null, 3, 4));
+    moveList.add(new Move(Board.W, 0, null, 6, 4));
+    Game game = new Game("1234", "B", "W", false, new int[9][], 9, 0, null, moveList);
+    String sgf = SgfCreator.createSgf(game, LocalDate.of(2024, Month.AUGUST, 30));
+    assertEquals("(;FF[4]CA[UTF-8]GM[1]DT[2024-08-30]GN[1234]PB[B]PW[W]RE[?]SZ[9];B[de];W[ge])",
+        sgf.replace("\n", ""));
+  }
+
+}