update them

src/puzzle/Main.java

@@ -1,4 +1,9 @@
 package puzzle;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.time.LocalDate;
 
 public class Main {
    // ---------------- CLI ----------------
@@ -68,5 +73,72 @@ public class Main {
          System.out.printf("%s %s start=(%d,%d) arrow=(%d,%d)%n",
                            w.word(), w.direction(), w.startRow(), w.startCol(), w.arrowRow(), w.arrowCol());
       }
+
+      // Export to JSON file
+      var dateStr = LocalDate.now().toString();
+      var theme = "algemeen";
+      var filename = String.format("crossword_%s_%02d_%s.json", dateStr, 1, safeSlug(theme));
+      var outDir = "data";
+      var outputPath = Paths.get(outDir, filename);
+
+      try {
+         Files.createDirectories(Paths.get(outDir));
+         var json = toJson(out, dateStr, theme);
+         Files.writeString(outputPath, json, StandardCharsets.UTF_8);
+         System.out.println("\nSaved to: " + outputPath);
+      } catch (IOException e) {
+         System.err.println("Failed to write " + filename + ": " + e.getMessage());
+      }
+   }
+
+   private static String toJson(ExportFormat.ExportedPuzzle puzzle, String date, String theme) {
+      var sb = new StringBuilder();
+      sb.append("{\n");
+      sb.append("  \"date\": \"").append(escapeJson(date)).append("\",\n");
+      sb.append("  \"theme\": \"").append(escapeJson(theme)).append("\",\n");
+      sb.append("  \"difficulty\": ").append(puzzle.difficulty()).append(",\n");
+      sb.append("  \"rewards\": {\n");
+      sb.append("    \"coins\": ").append(puzzle.rewards().coins()).append(",\n");
+      sb.append("    \"stars\": ").append(puzzle.rewards().stars()).append(",\n");
+      sb.append("    \"hints\": ").append(puzzle.rewards().hints()).append("\n");
+      sb.append("  },\n");
+      sb.append("  \"gridv2\": [\n");
+      for (var i = 0; i < puzzle.gridv2().size(); i++) {
+         sb.append("    \"").append(escapeJson(puzzle.gridv2().get(i))).append("\"");
+         if (i < puzzle.gridv2().size() - 1) sb.append(",");
+         sb.append("\n");
+      }
+      sb.append("  ],\n");
+      sb.append("  \"words\": [\n");
+      for (var i = 0; i < puzzle.words().size(); i++) {
+         var w = puzzle.words().get(i);
+         sb.append("    {\n");
+         sb.append("      \"word\": \"").append(escapeJson(w.word())).append("\",\n");
+         sb.append("      \"clue\": \"").append(escapeJson(w.clue())).append("\",\n");
+         sb.append("      \"startRow\": ").append(w.startRow()).append(",\n");
+         sb.append("      \"startCol\": ").append(w.startCol()).append(",\n");
+         sb.append("      \"direction\": \"").append(escapeJson(w.direction())).append("\",\n");
+         sb.append("      \"answer\": \"").append(escapeJson(w.answer())).append("\",\n");
+         sb.append("      \"arrowRow\": ").append(w.arrowRow()).append(",\n");
+         sb.append("      \"arrowCol\": ").append(w.arrowCol()).append("\n");
+         sb.append("    }");
+         if (i < puzzle.words().size() - 1) sb.append(",");
+         sb.append("\n");
+      }
+      sb.append("  ]\n");
+      sb.append("}\n");
+      return sb.toString();
+   }
+
+   private static String escapeJson(String s) {
+      return s.replace("\\", "\\\\")
+              .replace("\"", "\\\"")
+              .replace("\n", "\\n")
+              .replace("\r", "\\r")
+              .replace("\t", "\\t");
+   }
+
+   private static String safeSlug(String s) {
+      return s.toLowerCase().replaceAll("[^a-z0-9]+", "-").replaceAll("^-|-$", "");
    }
 }