/*
    * Copyright (C) 2026 B3Partners B.V.
    *
    * SPDX-License-Identifier: MIT
    */
   package org.tailormap.api.service;
   
   import ch.rasc.sse.eventbus.SseEvent;
   import ch.rasc.sse.eventbus.SseEventBus;
  import jakarta.annotation.PostConstruct;
  import java.io.File;
  import java.io.IOException;
  import java.io.UncheckedIOException;
  import java.lang.invoke.MethodHandles;
  import java.nio.charset.StandardCharsets;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.time.Instant;
  import java.util.ArrayList;
  import java.util.Comparator;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Set;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.stream.Stream;
  import org.apache.commons.lang3.StringUtils;
  import org.geotools.api.data.FeatureEvent;
  import org.geotools.api.data.FileDataStore;
  import org.geotools.api.data.Query;
  import org.geotools.api.data.SimpleFeatureSource;
  import org.geotools.api.data.SimpleFeatureStore;
  import org.geotools.api.data.Transaction;
  import org.geotools.api.feature.simple.SimpleFeatureType;
  import org.geotools.api.filter.Filter;
  import org.geotools.api.filter.FilterFactory;
  import org.geotools.api.filter.sort.SortOrder;
  import org.geotools.data.DataUtilities;
  import org.geotools.data.DefaultTransaction;
  import org.geotools.data.csv.CSVDataStoreFactory;
  import org.geotools.data.geojson.store.GeoJSONDataStoreFactory;
  import org.geotools.data.shapefile.ShapefileDumper;
  import org.geotools.factory.CommonFactoryFinder;
  import org.geotools.feature.SchemaException;
  import org.geotools.geopkg.FeatureEntry;
  import org.geotools.geopkg.GeoPackage;
  import org.geotools.util.factory.GeoTools;
  import org.jspecify.annotations.NonNull;
  import org.jspecify.annotations.Nullable;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.scheduling.annotation.Async;
  import org.springframework.scheduling.annotation.Scheduled;
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  import org.tailormap.api.controller.LayerExtractController;
  import org.tailormap.api.geotools.collection.ProgressReportingFeatureCollection;
  import org.tailormap.api.geotools.data.excel.ExcelDataStore;
  import org.tailormap.api.geotools.data.excel.ExcelDataStoreFactory;
  import org.tailormap.api.geotools.featuresources.FeatureSourceFactoryHelper;
  import org.tailormap.api.persistence.TMFeatureType;
  import org.tailormap.api.util.UUIDv7;
  import org.tailormap.api.viewer.model.ServerSentEventResponse;
  import tools.jackson.databind.SerializationFeature;
  import tools.jackson.databind.json.JsonMapper;
  
  @Service
  public class CreateLayerExtractService {
    private static final Logger logger =
        LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
    private final SseEventBus eventBus;
    private final JsonMapper jsonMapper;
    private final FeatureSourceFactoryHelper featureSourceFactoryHelper;
    private final ZipService zipService;
    private final FilterFactory ff = CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints());
  
    private static final String EXTRACT_SUBDIRECTORY = "tm-extracts";
    // we can safely use the tmp dir as a default here because we are running in a docker container without a shell so
    // access is limited
    // Base directory from config; actual export dir is <base>/tm-extracts
    @Value("${tailormap-api.extract.location:#{systemProperties['java.io.tmpdir']}}")
    private String exportFilesBaseLocation;
  
    private String exportFilesLocation;
  
    @Value("${tailormap-api.extract.cleanup-minutes:120}")
    private int cleanupIntervalMinutes;
  
    @Value("#{T(java.lang.Math).max(1, ${tailormap-api.extract.progress-report-interval:100})}")
    private int progressReportInterval;
  
    @Value("${tailormap-api.features.wfs_count_exact:false}")
    private boolean exactWfsCounts;
  
    @PostConstruct
    void initializeExtractDirectory() {
     try {
       Path exportRoot = Path.of(exportFilesBaseLocation, EXTRACT_SUBDIRECTORY);
       Files.createDirectories(exportRoot);
       this.exportFilesLocation = exportRoot.toRealPath().toString();
       logger.info("Using extract output directory: {}", this.exportFilesLocation);
     } catch (IOException e) {
       throw new UncheckedIOException(
           "Failed to initialize extract directory under base path: " + exportFilesBaseLocation, e);
     }
   }
 
   public CreateLayerExtractService(
       @Qualifier("viewerSseEventBus") SseEventBus eventBus,
       JsonMapper jsonMapper,
       FeatureSourceFactoryHelper featureSourceFactoryHelper,
       ZipService zipService) {
     this.eventBus = eventBus;
     this.featureSourceFactoryHelper = featureSourceFactoryHelper;
     this.zipService = zipService;
     // force unindented/single line output for SSE messages, because we may have set
     // spring.jackson.serialization.indent_output=true for debugging/development/test
     if (jsonMapper.isEnabled(SerializationFeature.INDENT_OUTPUT)) {
       this.jsonMapper = jsonMapper
           .rebuild()
           .configure(SerializationFeature.INDENT_OUTPUT, false)
           .build();
     } else {
       this.jsonMapper = jsonMapper;
     }
   }
 
   public String getExportFilesLocation() {
     return exportFilesLocation;
   }
 
   private void emitError(@NonNull String clientId, String details) {
     eventBus.handleEvent(SseEvent.builder()
         .addClientId(clientId)
         .data(jsonMapper.writeValueAsString(new ServerSentEventResponse()
             .eventType(ServerSentEventResponse.EventTypeEnum.EXTRACT_FAILED)
             .id(UUIDv7.randomV7())
             .details(Map.of(
                 "message", "An error occurred during extract creation", "explanation", details))))
         .build());
   }
 
   public void emitProgress(
       @NonNull String clientId,
       @Nullable String fileId,
       int progress,
       boolean completed,
       @Nullable String message) {
     message = StringUtils.isBlank(message) ? "Extract task started" : message;
     fileId = StringUtils.isBlank(fileId) ? "" : fileId;
     logger.debug("Emitting progress {}% for client [{}], message: '{}'", progress, clientId, message);
 
     eventBus.handleEvent(SseEvent.builder()
         .addClientId(clientId)
         .data(jsonMapper.writeValueAsString(new ServerSentEventResponse()
             .eventType(
                 completed
                     ? ServerSentEventResponse.EventTypeEnum.EXTRACT_COMPLETED
                     : ServerSentEventResponse.EventTypeEnum.EXTRACT_PROGRESS)
             .id(UUIDv7.randomV7())
             .details(Map.of(
                 "progress",
                 progress,
                 "message",
                 completed ? "Extract task completed" : message,
                 "downloadId",
                 fileId))))
         .build());
   }
 
   /**
    * Check that the sse client id is valid and exists.
    *
    * @param clientId the SSE client id
    * @throws IllegalArgumentException when the SSE client id is invalid or not found on the event bus
    */
   public void validateClientId(@NonNull String clientId) throws IllegalArgumentException {
     if (!clientId.matches("[A-Za-z0-9_-]+")) {
       logger.warn("Invalid clientId for SSE connection: {}", clientId);
       throw new IllegalArgumentException("Invalid clientId");
     }
 
     // validate the given clientId is known on the event bus
     this.eventBus.getAllClientIds().stream()
         .filter(id -> Objects.equals(id, clientId))
         .findFirst()
         .ifPresentOrElse(id -> logger.debug("Validated clientId {}", id), () -> {
           throw new IllegalArgumentException("No active subscription found for clientId " + clientId);
         });
   }
 
   /**
    * Create a validated filename for an extract. The naming follows the pattern
    * {@code "%s_%s_%s%s".formatted(sourceFT.getName(), clientId, UUIDv7.randomV7(), outputFormat.getExtension()) }
    * where the first part is the source feature type name (this is cleaned from some characters), the second part is
    * the SSE client id, the third part is a random UUIDv7 and the fourth part is the file extension based on the
    * requested output format.
    *
    * @param clientId the SSE client id
    * @param sourceFT the source featuretype for the extract
    * @param outputFormat the required format of the extract
    * @return the filename used to create an extract
    * @throws IllegalArgumentException when the SSE clientId is invalid or not found on the event bus
    */
   public String createExtractFilename(
       @NonNull String clientId,
       @NonNull TMFeatureType sourceFT,
       LayerExtractController.@NonNull ExtractOutputFormat outputFormat)
       throws IllegalArgumentException {
 
     this.validateClientId(clientId);
 
     String cleanFTName = sourceFT.getName();
     if (cleanFTName.contains(":")) {
       // clip off the WFS namespace part
       cleanFTName = cleanFTName.substring(cleanFTName.lastIndexOf(":") + 1);
       // remove: '.' and '_' which are used as separators in the filename and could cause issues when parsing the
       // filename later on
       cleanFTName = cleanFTName.replaceAll("[._]", "");
     }
     return "%s_%s_%s%s".formatted(cleanFTName, clientId, UUIDv7.randomV7(), outputFormat.getExtension());
   }
 
   @Async("extractTaskExecutor")
   @Transactional
   public void createLayerExtract(
       @NonNull String clientId,
       @NonNull TMFeatureType inputTmFeatureType,
       @NonNull Set<String> attributes,
       @Nullable Filter filter,
       String sortBy,
       SortOrder sortOrder,
       LayerExtractController.@NonNull ExtractOutputFormat extractOutputFormat,
       @NonNull String outputFileName) {
 
     this.emitProgress(clientId, outputFileName, 0, false, "Starting extract");
 
     switch (extractOutputFormat) {
       case GEOPACKAGE ->
         this.handleGeoPackage(
             clientId, inputTmFeatureType, attributes, filter, sortBy, sortOrder, outputFileName);
       case SHAPE ->
         this.handleWithShapeDumper(
             clientId, inputTmFeatureType, attributes, filter, sortBy, sortOrder, outputFileName);
       case CSV, GEOJSON, XLSX ->
         this.handleSingleFileFormats(
             clientId,
             inputTmFeatureType,
             attributes,
             filter,
             sortBy,
             sortOrder,
             extractOutputFormat,
             outputFileName);
     }
   }
 
   private void handleGeoPackage(
       @NonNull String clientId,
       @NonNull TMFeatureType inputTmFeatureType,
       @NonNull Set<String> attributes,
       Filter filter,
       String sortBy,
       SortOrder sortOrder,
       @NonNull String outputFileName) {
 
     SimpleFeatureSource inputFeatureSource = null;
     File outputFile;
     try {
       outputFile = getValidatedOutputFile(outputFileName);
       if (!logger.isDebugEnabled()) {
         // delete in production after JVM exit because the event bus will be reset when the JVM exits, and then
         // we are unlikely to have a reference to the file anymore.
         // In debug/development mode we want to keep the file for inspection.
         outputFile.deleteOnExit();
       }
     } catch (IOException e) {
       emitError(clientId, e.getMessage());
       logger.error("Creating extract failed", e);
       return;
     }
 
     try (GeoPackage geopkg = new GeoPackage(outputFile)) {
       geopkg.init();
 
       inputFeatureSource = featureSourceFactoryHelper.openGeoToolsFeatureSource(inputTmFeatureType);
 
       Query q = createQuery(inputFeatureSource, attributes, filter, sortBy, sortOrder);
 
       int featCount = getFeatureCount(inputFeatureSource, q);
       if (featCount < 0) {
         logger.warn("Could not determine feature count for extract, progress reporting will be inaccurate");
       }
       final boolean hasKnownFeatureCount = featCount > 0;
 
       SimpleFeatureType fType =
           DataUtilities.createSubType(inputFeatureSource.getSchema(), attributes.toArray(new String[0]));
 
       FeatureEntry entry = new FeatureEntry();
       entry.setTableName(fType.getTypeName());
       entry.setDescription(fType.getTypeName());
 
       AtomicInteger lastProgress = new AtomicInteger(0);
       geopkg.add(
           entry,
           new ProgressReportingFeatureCollection(
               inputFeatureSource.getFeatures(q), progressReportInterval, processed -> {
                 int progress = hasKnownFeatureCount ? (int) ((processed / (double) featCount) * 99) : 0;
                 lastProgress.set(progress);
                 String progressMessage = hasKnownFeatureCount
                     ? "Extracting geopackage: %d/%d features processed"
                         .formatted(processed, featCount)
                     : "Extracting geopackage: %d features processed".formatted(processed);
                 this.emitProgress(clientId, outputFileName, progress, false, progressMessage);
               }));
 
       this.emitProgress(
           clientId,
           outputFileName,
           Math.max(99, lastProgress.get()),
           false,
           "Extract geopackage created successfully");
       geopkg.createSpatialIndex(entry);
       geopkg.close();
       this.emitProgress(clientId, outputFileName, 100, true, "Extract completed successfully");
     } catch (SchemaException | IOException | IllegalArgumentException e) {
       emitError(clientId, e.getMessage());
       logger.error("Creating extract failed", e);
     } finally {
       if (inputFeatureSource != null) {
         try {
           inputFeatureSource.getDataStore().dispose();
         } catch (Exception e) {
           logger.warn("Error disposing datastore for feature source {}", inputFeatureSource.getName(), e);
         }
       }
     }
   }
 
   private void handleSingleFileFormats(
       @NonNull String clientId,
       @NonNull TMFeatureType inputTmFeatureType,
       @NonNull Set<String> attributes,
       Filter filter,
       String sortBy,
       SortOrder sortOrder,
       LayerExtractController.@NonNull ExtractOutputFormat extractOutputFormat,
       @NonNull String outputFileName) {
 
     SimpleFeatureSource inputFeatureSource = null;
     FileDataStore outputDataStore = null;
     try (Transaction outputTransaction = new DefaultTransaction("tailormap-extract-output")) {
       inputFeatureSource = featureSourceFactoryHelper.openGeoToolsFeatureSource(inputTmFeatureType);
 
       Query q = createQuery(inputFeatureSource, attributes, filter, sortBy, sortOrder);
 
       int featCount = getFeatureCount(inputFeatureSource, q);
 
       if (extractOutputFormat == LayerExtractController.ExtractOutputFormat.XLSX
           && featCount >= ExcelDataStore.getMaxRows()) {
         this.emitError(
             clientId,
             "Extract result contains %d features, which exceeds the maximum of %d for Excel output format. Please refine your filter or choose a different output format."
                 .formatted(featCount, ExcelDataStore.getMaxRows()));
         logger.error(
             "Extract result contains {} features, which exceeds the maximum of {} for Excel output format. Please refine your filter or choose a different output format.",
             featCount,
             ExcelDataStore.getMaxRows());
         // nothing we can do now as we are in a background/async process, so we just return without creating an
         // extract file.
         // The client will receive no extract completed event, and we have already emitted an error message with
         // details.
         return;
       }
 
       outputDataStore = this.getExtractDataStore(
           extractOutputFormat, outputFileName, clientId, inputTmFeatureType.getName());
       SimpleFeatureType fType =
           DataUtilities.createSubType(inputFeatureSource.getSchema(), attributes.toArray(new String[0]));
       outputDataStore.createSchema(fType);
 
       final AtomicInteger featsAdded = new AtomicInteger();
       if (outputDataStore.getFeatureSource() instanceof SimpleFeatureStore featureStore) {
         featureStore.setTransaction(outputTransaction);
         featureStore.addFeatureListener(event -> {
           if (event.getType().equals(FeatureEvent.Type.ADDED)) {
             featsAdded.getAndIncrement();
           }
           if (featCount > 0) {
             if (featsAdded.get() % progressReportInterval == 0) {
               this.emitProgress(
                   clientId,
                   outputFileName,
                   (int) ((featsAdded.doubleValue() / featCount) * 100),
                   false,
                   null);
             }
           }
         });
         featureStore.addFeatures(inputFeatureSource.getFeatures(q));
         outputTransaction.commit();
         outputDataStore.dispose();
         this.emitProgress(clientId, outputFileName, 100, true, "Extract completed successfully");
       } else {
         outputDataStore.dispose();
         this.emitError(clientId, "Output datastore is not a SimpleFeatureStore, cannot write features");
         logger.error("Output datastore is not a SimpleFeatureStore, cannot write features");
       }
     } catch (IOException | SchemaException | IllegalArgumentException | NullPointerException e) {
       emitError(clientId, e.getMessage());
       logger.error("Creating extract failed", e);
     } finally {
       if (outputDataStore != null) {
         outputDataStore.dispose();
       }
       if (inputFeatureSource != null) {
         try {
           inputFeatureSource.getDataStore().dispose();
         } catch (Exception e) {
           logger.warn("Error disposing datastore for feature source {}", inputFeatureSource.getName(), e);
         }
       }
     }
   }
 
   private File getValidatedOutputFile(String outputFileName) throws IOException {
     Path exportRoot = Path.of(exportFilesLocation).toRealPath();
     Path outputPath = exportRoot.resolve(outputFileName).normalize();
     if (!outputPath.startsWith(exportRoot)) {
       throw new IOException("Invalid file path");
     }
     Path createdFilePath = Files.createFile(outputPath).toRealPath();
     if (!createdFilePath.startsWith(exportRoot)) {
       throw new IOException("Invalid file path");
     }
     return createdFilePath.toFile();
   }
 
   /**
    * Create a writable GeoTools {@link FileDataStore} for the requested extract format. The format must be must be
    * supported by a {@link FileDataStore} implementation, for example CSV, Excel or GeoJSON. For unsupported formats
    * (for example Shapefile) a custom handling is used in the calling method.
    *
    * <p>The output file is validated to ensure it is created under the configured extract location.
    *
    * @param extractOutputFormat the requested extract output format
    * @param outputFileName the target output filename
    * @param clientId the SSE client id, used for error reporting
    * @param typeName the source feature type name, used to derive format-specific metadata (for example Excel sheet
    *     name)
    * @return a newly created {@link FileDataStore} configured for the requested format
    * @throws IOException when the output file path is invalid or the datastore cannot be created
    */
   private FileDataStore getExtractDataStore(
       LayerExtractController.ExtractOutputFormat extractOutputFormat,
       String outputFileName,
       String clientId,
       String typeName)
       throws IOException {
 
     final File outputFile = getValidatedOutputFile(outputFileName);
     if (!logger.isDebugEnabled()) {
       outputFile.deleteOnExit();
     }
 
     return switch (extractOutputFormat) {
       case CSV ->
         (FileDataStore) new CSVDataStoreFactory()
             .createNewDataStore(Map.of(
                 CSVDataStoreFactory.FILE_PARAM.key,
                 outputFile,
                 CSVDataStoreFactory.STRATEGYP.key,
                 CSVDataStoreFactory.WKT_STRATEGY,
                 CSVDataStoreFactory.WKTP.key,
                 "the_geom_wkt",
                 CSVDataStoreFactory.WRITEPRJ.key,
                 false,
                 CSVDataStoreFactory.QUOTEALL.key,
                 true));
       case XLSX -> {
         String processedTypeName = typeName.contains(":")
             ? typeName.substring(typeName.lastIndexOf(":") + 1).replaceAll("[\\\\/?*\\[\\]:]", "_")
             : typeName.replaceAll("[\\\\/?*\\[\\]:]", "_");
         processedTypeName = processedTypeName.substring(0, Math.min(processedTypeName.length(), 31));
         yield (FileDataStore) new ExcelDataStoreFactory()
             .createNewDataStore(Map.of(
                 ExcelDataStoreFactory.FILE_PARAM.key,
                 outputFile,
                 ExcelDataStoreFactory.SHEET_PARAM.key,
                 processedTypeName));
       }
       case GEOJSON ->
         (FileDataStore) new GeoJSONDataStoreFactory()
             .createNewDataStore(Map.of(GeoJSONDataStoreFactory.FILE_PARAM.key, outputFile));
       default -> {
         emitError(clientId, "Unknown output format: " + extractOutputFormat);
         logger.error("Unknown output format: {}", extractOutputFormat);
         throw new IllegalArgumentException("Unknown output format: " + extractOutputFormat);
       }
     };
   }
 
   private int getFeatureCount(SimpleFeatureSource source, Query query) throws IOException {
     int count = source.getCount(query);
     logger.debug("Filtered source counts {} features", count);
     if (count < 0 && exactWfsCounts) {
       count = source.getFeatures(query).size();
     }
     return count;
   }
 
   private void handleWithShapeDumper(
       @NonNull String clientId,
       @NonNull TMFeatureType inputTmFeatureType,
       @NonNull Set<String> attributes,
       Filter filter,
       String sortBy,
       SortOrder sortOrder,
       @NonNull String outputFileName) {
     SimpleFeatureSource inputFeatureSource = null;
     File outputDirectory = null;
     try {
       File outputFile = getValidatedOutputFile(outputFileName);
       String baseName = outputFile
           .getName()
           .substring(
               0,
               outputFile
                   .getName()
                   .lastIndexOf(LayerExtractController.ExtractOutputFormat.SHAPE.getExtension()));
       outputDirectory = outputFile
           .getParentFile()
           .toPath()
           .resolve(baseName)
           .toFile()
           .getCanonicalFile();
       if (!logger.isDebugEnabled()) {
         // delete in production after JVM exit because the event bus will be reset when the JVM exits, and then
         // we are unlikely to have a reference to the file anymore.
         // In debug/development mode we want to keep the directory for inspection.
         outputDirectory.deleteOnExit();
       }
       Files.createDirectories(outputDirectory.toPath());
 
       ShapefileDumper dumper = new ShapefileDumper(outputDirectory);
       dumper.setCharset(StandardCharsets.UTF_8);
       dumper.setEmptyShapefileAllowed(false);
 
       inputFeatureSource = featureSourceFactoryHelper.openGeoToolsFeatureSource(inputTmFeatureType);
 
       Query q = createQuery(inputFeatureSource, attributes, filter, sortBy, sortOrder);
 
       final int featCount = getFeatureCount(inputFeatureSource, q);
       final boolean hasKnownFeatureCount = featCount > 0;
 
       AtomicInteger lastProgress = new AtomicInteger(0);
 
       dumper.dump(new ProgressReportingFeatureCollection(
           inputFeatureSource.getFeatures(q), progressReportInterval, processed -> {
             int progress = hasKnownFeatureCount ? (int) ((processed / (double) featCount) * 99) : 0;
             lastProgress.set(progress);
             String progressMessage = hasKnownFeatureCount
                 ? "Extracting shapes: %d/%d features processed".formatted(processed, featCount)
                 : "Extracting shapes: %d features processed".formatted(processed);
             this.emitProgress(clientId, outputFileName, progress, false, progressMessage);
           }));
       this.emitProgress(
           clientId,
           outputFileName,
           Math.max(99, lastProgress.get()),
           false,
           "Extract shapes dumped successfully");
 
       zipService.zipDirectory(outputDirectory.toPath(), outputFile.toPath());
       this.emitProgress(clientId, outputFileName, 100, true, "Extract completed successfully");
     } catch (IOException | IllegalArgumentException e) {
       emitError(clientId, e.getMessage());
       logger.error("Creating extract failed", e);
     } finally {
       if (outputDirectory != null) {
         try {
           deleteDirectoryRecursively(outputDirectory.toPath());
         } catch (IOException e) {
           logger.error("Failed to delete output directory {}", outputDirectory, e);
         }
       }
       if (inputFeatureSource != null) {
         try {
           inputFeatureSource.getDataStore().dispose();
         } catch (Exception e) {
           logger.warn("Error disposing datastore for feature source {}", inputFeatureSource.getName(), e);
         }
       }
     }
   }
 
   private Query createQuery(
       SimpleFeatureSource inputFeatureSource,
       Set<String> attributes,
       Filter filter,
       String sortBy,
       SortOrder sortOrder) {
     Query q = new Query(inputFeatureSource.getName().toString());
     if (!attributes.isEmpty()) {
       q.setPropertyNames(attributes.toArray(new String[0]));
     }
 
     if (filter != null) {
       q.setFilter(filter);
     }
     if (!StringUtils.isBlank(sortBy)) {
       q.setSortBy(ff.sort(sortBy, Objects.requireNonNullElse(sortOrder, SortOrder.ASCENDING)));
     }
     return q;
   }
 
   /**
    * Cleanup expired extract files. Filenames are created in {@link CreateLayerExtractService#createExtractFilename }
    * and follow the pattern {@code "%s_%s_%s.%s".formatted(sourceFT.getName(), clientId, UUIDv7.randomV7(),
    * outputFormat.getExtension()) }
    */
   @Scheduled(fixedDelay = 5, timeUnit = TimeUnit.MINUTES, initialDelay = 15)
   public void cleanupExpiredExtracts() {
     logger.debug("Running expired extracts cleanup in {}", exportFilesLocation);
     List<FileWithAttributes> oldDownloadFilesOnDisk = new ArrayList<>();
     Set<String> validClientIds = eventBus.getAllClientIds();
 
     // list download files in export location and delete those that are not bound to an active sse stream client
     try (Stream<Path> stream = Files.walk(Path.of(exportFilesLocation))) {
       stream.filter(Files::isRegularFile).forEach(path -> {
         File file = path.toFile();
         String filename = file.getName();
         String[] parts = filename.split("[_.]", -1);
         if (parts.length < 4) {
           logger.warn("Unexpected file in extract location: {}", filename);
           return;
         }
         String clientId = parts[1];
         if (!validClientIds.contains(clientId)) {
           if (!file.delete()) {
             logger.error("Failed to delete unattached extract file {}", filename);
           }
         } else {
           try {
             Instant timestampPart = UUIDv7.timestampAsInstant(UUIDv7.fromString(parts[2]));
             oldDownloadFilesOnDisk.add(new FileWithAttributes(file, timestampPart, clientId));
           } catch (IllegalArgumentException ignored) {
             // not a valid v7 uuid
           }
         }
       });
 
       try (Stream<Path> paths = Files.walk(Path.of(exportFilesLocation))) {
         paths.filter(Files::isDirectory)
             .filter(path -> !path.equals(Path.of(exportFilesLocation)))
             .forEach(path -> {
               logger.debug("Checking directory {} for expired extracts", path);
               File file = path.toFile();
               String filename = file.getName();
               String[] parts = filename.split("[_]", -1);
               if (parts.length < 3) {
                 logger.warn("Unexpected directory in extract location: {}", filename);
                 return;
               }
               String clientId = parts[1];
               if (!validClientIds.contains(clientId)) {
                 try {
                   deleteDirectoryRecursively(file.toPath());
                 } catch (IOException e) {
                   logger.error("Failed to delete unattached extract directory {}", filename);
                 }
               } else {
                 try {
                   Instant timestampPart = UUIDv7.timestampAsInstant(UUIDv7.fromString(parts[2]));
                   oldDownloadFilesOnDisk.add(new FileWithAttributes(file, timestampPart, clientId));
                 } catch (IllegalArgumentException ignored) {
                   // not a valid v7 uuid
                 }
               }
             });
       }
 
       // delete any files/directories are older than the cutoff
       oldDownloadFilesOnDisk.stream()
           .filter(f -> f.timestamp()
               .isBefore(Instant.now().minusSeconds(TimeUnit.MINUTES.toSeconds(cleanupIntervalMinutes))))
           .forEach(f -> {
             if (f.file.isDirectory()) {
               try {
                 deleteDirectoryRecursively(f.file().toPath());
               } catch (IOException ignored) {
                 logger.warn("Failed to delete directory {}", f.file());
               }
             } else {
               if (!f.file().delete()) {
                 logger.error(
                     "Failed to delete expired extract file {}",
                     f.file().getName());
               }
             }
           });
     } catch (IOException e) {
       logger.error("Error while cleaning up expired extracts", e);
     }
   }
 
   private void deleteDirectoryRecursively(Path directory) throws IOException {
     try (Stream<Path> paths = Files.walk(directory)) {
       paths.sorted(Comparator.reverseOrder()).forEach(path -> {
         try {
           logger.debug("Deleting path {}", path);
           Files.deleteIfExists(path);
         } catch (IOException e) {
           throw new RuntimeException("Failed to delete path: " + path, e);
         }
       });
     } catch (RuntimeException e) {
       if (e.getCause() instanceof IOException ioException) {
         throw ioException;
       }
       throw e;
     }
   }
 
   private record FileWithAttributes(File file, Instant timestamp, String clientId) {}
 }