[LIB-9] Set of entities for PGN parsing and formatting

[chesshog.git] / chesshog-format / src / main / java / org / hedgecode / chess / pgn / format / ReduceMovesFormat.java

diff --git a/chesshog-format/src/main/java/org/hedgecode/chess/pgn/format/ReduceMovesFormat.java b/chesshog-format/src/main/java/org/hedgecode/chess/pgn/format/ReduceMovesFormat.java
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+++ b/chesshog-format/src/main/java/org/hedgecode/chess/pgn/format/ReduceMovesFormat.java
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+/*
+ * Copyright (c) 2018-2020. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.pgn.format;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.hedgecode.chess.pgn.entity.Move;
+import org.hedgecode.chess.pgn.entity.Moves;
+
+import static org.hedgecode.chess.pgn.PGNConstants.*;
+
+/**
+ * ReduceMovesFormat
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class ReduceMovesFormat extends AbstractMovesFormat {
+
+    @Override
+    public String format(List<Move> moves) {
+        Collections.sort(moves);
+        StringBuilder sb = new StringBuilder();
+        for (Move move : moves) {
+            sb.append(
+                    formatSan(move)
+            ).append(
+                    PGN_SPACE
+            );
+        }
+        return sb.toString().trim();
+    }
+
+    @Override
+    public String format(Moves moves) {
+        return format(
+                moves.getMoves().toArray(
+                        new Move[moves.getMoves().size()]
+                )
+        );
+    }
+
+    private String formatSan(Move move) {
+        return move.ply() % 2 != 0
+                ? String.format(WHITE_MOVE_FORMAT, move.ply() / 2 + 1, move.move())
+                : String.format(BLACK_MOVE_FORMAT, move.move());
+    }
+
+}