Add initial code

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
+
+/tmp/
+*.png

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+
+/discord.xml

.idea/encodings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="homebrew-23" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>moe.wah</groupId>
+    <artifactId>PGN-ator</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.github.bhlangonijr</groupId>
+            <artifactId>chesslib</artifactId>
+            <version>1.3.4</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.alexandreroman</groupId>
+            <artifactId>chessimage</artifactId>
+            <version>1.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sksamuel.scrimage</groupId>
+            <artifactId>scrimage-core</artifactId>
+            <version>4.3.1</version>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/moe/wah/Main.java

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+package moe.wah;
+
+import com.github.alexandreroman.chessimage.ChessRenderer;
+import com.github.alexandreroman.chessimage.ChessThemeLibrary;
+import com.github.bhlangonijr.chesslib.Board;
+import com.github.bhlangonijr.chesslib.game.Game;
+import com.github.bhlangonijr.chesslib.move.Move;
+import com.github.bhlangonijr.chesslib.move.MoveList;
+import com.github.bhlangonijr.chesslib.pgn.PgnHolder;
+import com.sksamuel.scrimage.ImmutableImage;
+import com.sksamuel.scrimage.nio.StreamingGifWriter;
+import com.sksamuel.scrimage.nio.StreamingGifWriter.GifStream;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) throws Exception {
+        Files.createDirectories(Paths.get("./temp/"));
+        // Load PGN from file
+        PgnHolder pgn = new PgnHolder("game.pgn");
+        pgnToGif(pgn);
+    }
+    private static void pgnToGif(PgnHolder pgn) throws Exception {
+        ChessRenderer renderer = new ChessRenderer(ChessThemeLibrary.GREEN_THEME, 60);
+        Game game = pgnToGame(pgn);
+        String boardID = String.valueOf(Instant.now().toEpochMilli());
+        game.loadMoveText();
+        System.out.println(game.getTermination());
+
+        MoveList moves = game.getHalfMoves();
+        Board board = new Board();
+        int index = 1;
+        for (Move move : moves) {
+            board.doMove(move);
+            renderBoard(board, renderer, boardID, index);
+
+            // Add 5 extra frames of final board
+            if (index == moves.size()) {
+                for (int x = 0; x < 5; x++) {
+                    index++;
+                    renderBoard(board, renderer, boardID, index);
+                }
+            }
+            index++;
+        }
+
+        System.out.println("Rendered " + moves.size() + " moves");
+
+        boardToGif(boardID);
+    }
+
+    private static void renderBoard(Board board, ChessRenderer renderer, String boardID, int index) {
+        String index_padded = String.format("%03d", index);
+        File targetFile = new File("./temp/", "board_" + boardID + "_" + index_padded + ".png");
+        try (FileOutputStream out = new FileOutputStream(targetFile)) {
+            renderer.render(board.getFen(), out);
+        } catch (IOException e) {
+            System.out.println("Error rendering move " + index_padded + ", " + e.getMessage());
+        }
+    }
+
+    private static Game pgnToGame(PgnHolder pgn) throws Exception {
+        pgn.loadPgn();
+        return pgn.getGames().getFirst();
+    }
+
+    /**
+     * Converts a chess board to a GIF
+     * Output file is board_x.gif where x is the boardID
+     * @param boardID   ID of the board (UNIX epoch)
+     */
+    public static void boardToGif(String boardID) throws Exception {
+        List<File> boardFiles = getBoardFiles(new File("./temp/"), boardID);
+        if (boardFiles.isEmpty()) {
+            throw new RuntimeException("No PNG files found for board with ID: " + boardID);
+        }
+        List<BufferedImage> images = new ArrayList<>();
+        for (File file : boardFiles) {
+            BufferedImage image = ImageIO.read(file);
+            images.add(image);
+        }
+        System.out.println("There are " + (long) images.size() + " frames for board " + boardID);
+        String gif_name = "board_" + boardID + ".gif";
+        StreamingGifWriter writer = new StreamingGifWriter(Duration.ofMillis(500), true, false);
+        GifStream gif = writer.prepareStream(gif_name, BufferedImage.TYPE_INT_ARGB);
+        for (BufferedImage image : images) {
+            gif.writeFrame(ImmutableImage.fromAwt(image));
+        }
+        gif.close();
+        System.out.println("Rendered " + gif_name);
+        for (File file : boardFiles) {
+            boolean delete_success = file.delete();
+            if (!delete_success) {
+                System.out.println("Failed to delete " + file.getName() + "!");
+            }
+        }
+        System.out.println("Removed " + boardFiles.size() + " temp files");
+    }
+
+    /**
+     * Gets the PNG files for the specified board
+     * @param directory Directory to search
+     * @param boardID   Board ID (UNIX epoch)
+     * @return A list of board Files
+     */
+    private static List<File> getBoardFiles(File directory, String boardID) {
+        List<File> boardFiles = new ArrayList<>();
+        File[] files = directory.listFiles();
+        assert files != null;
+        Arrays.sort(files);
+        for (File file : files) {
+            if (file.isFile() && file.getName().toLowerCase().endsWith(".png")
+                    && file.getName().startsWith("board_" + boardID)) {
+                boardFiles.add(file);
+            }
+        }
+        return boardFiles;
+    }
+}