public class DatabaseDataProvider implements DataProvider {

    private final DataSource dataSource;

    public DatabaseDataProvider(DataSource dataSource) {
        this.dataSource = dataSource;
    }

    @Override
    public void saveShare(ShareData share) {
        try (Connection conn = dataSource.getConnection()) {
            // Save main share data
            saveShareMetadata(conn, share);

            // Save type-specific content
            switch (share.getType()) {
                case ITEM:
                    saveItemData(conn, share.getId(), share.getItem());
                    break;
                case INVENTORY:
                    saveInventoryData(conn, share.getId(), share.getItems());
                    break;
                case STATS:
                    saveStatsData(conn, share.getId(), share.getStats());
                    break;
                case CONTAINER:
                    saveContainerData(conn, share.getId(), share.getContainer());
                    break;
            }

            // Save receivers
            saveReceivers(conn, share.getId(), share.getReceivers());

        } catch (SQLException e) {
            throw new DataStorageException("Failed to save share: " + share.getId(), e);
        }
    }

    @Override
    public Optional<ShareData> loadShare(String shareId) {
        try (Connection conn = dataSource.getConnection()) {
            return loadShareFromDatabase(conn, shareId);
        } catch (SQLException e) {
            throw new DataStorageException("Failed to load share: " + shareId, e);
        }
    }

    @Override
    public List<ShareData> getPlayerShares(UUID playerId) {
        try (Connection conn = dataSource.getConnection()) {
            return loadPlayerShares(conn, playerId);
        } catch (SQLException e) {
            throw new DataStorageException("Failed to load player shares", e);
        }
    }

    @Override
    public void cleanup() {
        try (Connection conn = dataSource.getConnection()) {
            cleanupExpiredShares(conn);
        } catch (SQLException e) {
            throw new DataStorageException("Failed to cleanup shares", e);
        }
    }

    // Implementation details...
    private void saveShareMetadata(Connection conn, ShareData share) throws SQLException {
        PreparedStatement stmt = conn.prepareStatement(
            "INSERT INTO shares (id, creator_uuid, type, created_at, expires_at, description, view_count) " +
            "VALUES (?, ?, ?, ?, ?, ?, ?) " +
            "ON DUPLICATE KEY UPDATE " +
            "description = VALUES(description), expires_at = VALUES(expires_at), view_count = VALUES(view_count)"
        );

        stmt.setString(1, share.getId());
        stmt.setString(2, share.getCreator().getUuidAsString());
        stmt.setString(3, share.getType().name());
        stmt.setTimestamp(4, Timestamp.from(share.getCreatedAt()));
        stmt.setTimestamp(5, Timestamp.from(share.getExpiresAt()));
        stmt.setString(6, share.getDescription());
        stmt.setInt(7, share.getViewCount());

        stmt.executeUpdate();
    }
}

public class RedisDataProvider implements DataProvider {

    private final RedisTemplate<String, Object> redisTemplate;
    private final ObjectMapper objectMapper;

    public RedisDataProvider(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
        this.objectMapper = new ObjectMapper();
    }

    @Override
    public void saveShare(ShareData share) {
        try {
            String key = "share:" + share.getId();
            ShareDataDTO dto = ShareDataDTO.fromShareData(share);
            String json = objectMapper.writeValueAsString(dto);

            // Store with expiration
            Duration ttl = Duration.between(Instant.now(), share.getExpiresAt());
            redisTemplate.opsForValue().set(key, json, ttl);

            // Add to player index
            String playerKey = "player_shares:" + share.getCreator().getUuidAsString();
            redisTemplate.opsForSet().add(playerKey, share.getId());

            // Add to type index
            String typeKey = "shares_by_type:" + share.getType().name();
            redisTemplate.opsForSet().add(typeKey, share.getId());

        } catch (JsonProcessingException e) {
            throw new DataStorageException("Failed to serialize share data", e);
        }
    }

    @Override
    public Optional<ShareData> loadShare(String shareId) {
        try {
            String key = "share:" + shareId;
            String json = (String) redisTemplate.opsForValue().get(key);

            if (json != null) {
                ShareDataDTO dto = objectMapper.readValue(json, ShareDataDTO.class);
                return Optional.of(dto.toShareData());
            }

            return Optional.empty();
        } catch (JsonProcessingException e) {
            throw new DataStorageException("Failed to deserialize share data", e);
        }
    }

    @Override
    public List<ShareData> getPlayerShares(UUID playerId) {
        String playerKey = "player_shares:" + playerId.toString();
        Set<Object> shareIds = redisTemplate.opsForSet().members(playerKey);

        return shareIds.stream()
            .map(id -> loadShare((String) id))
            .filter(Optional::isPresent)
            .map(Optional::get)
            .collect(Collectors.toList());
    }

    @Override
    public void cleanup() {
        // Redis automatically expires keys, but we can clean up indexes
        cleanupPlayerIndexes();
        cleanupTypeIndexes();
    }
}

public class BulkDataOperations {

    public void bulkSaveShares(List<ShareData> shares) {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        if (provider instanceof BulkDataProvider) {
            // Use bulk operations if supported
            ((BulkDataProvider) provider).bulkSave(shares);
        } else {
            // Fallback to individual saves
            shares.parallelStream().forEach(provider::saveShare);
        }
    }

    public Map<String, ShareData> bulkLoadShares(List<String> shareIds) {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        if (provider instanceof BulkDataProvider) {
            return ((BulkDataProvider) provider).bulkLoad(shareIds);
        } else {
            return shareIds.parallelStream()
                .collect(Collectors.toMap(
                    id -> id,
                    id -> provider.loadShare(id).orElse(null)
                ))
                .entrySet().stream()
                .filter(entry -> entry.getValue() != null)
                .collect(Collectors.toMap(
                    Map.Entry::getKey,
                    Map.Entry::getValue
                ));
        }
    }
}

public interface BulkDataProvider extends DataProvider {
    void bulkSave(List<ShareData> shares);
    Map<String, ShareData> bulkLoad(List<String> shareIds);
    void bulkDelete(List<String> shareIds);
}

public class DataMigration {

    public void migrateFromFileToDatabase() {
        ShowcaseAPI api = ShowcaseAPI.getInstance();

        // Get current provider (file-based)
        DataProvider oldProvider = api.getDataProvider();

        // Create new provider (database)
        DataProvider newProvider = new DatabaseDataProvider(dataSource);

        // Migrate all data
        try {
            migrateShares(oldProvider, newProvider);
            migratePlayerStats(oldProvider, newProvider);
            migrateConfiguration(oldProvider, newProvider);

            // Switch to new provider
            api.setDataProvider(newProvider);

            System.out.println("Migration completed successfully");
        } catch (Exception e) {
            System.err.println("Migration failed: " + e.getMessage());
            throw new RuntimeException("Data migration failed", e);
        }
    }

    private void migrateShares(DataProvider from, DataProvider to) {
        // This would need to be implemented based on the old provider's API
        // For example, if migrating from JSON files:
        List<ShareData> allShares = loadAllSharesFromFiles(from);

        for (ShareData share : allShares) {
            to.saveShare(share);
        }
    }
}

public class ShareDataSerializer {

    public static class ShareDataDTO {
        public String id;
        public String creatorUuid;
        public String type;
        public String createdAt;
        public String expiresAt;
        public String description;
        public Set<String> receivers;
        public Object content; // Type-specific content
        public int viewCount;
        public List<String> viewers;

        public static ShareDataDTO fromShareData(ShareData share) {
            ShareDataDTO dto = new ShareDataDTO();
            dto.id = share.getId();
            dto.creatorUuid = share.getCreator().getUuidAsString();
            dto.type = share.getType().name();
            dto.createdAt = share.getCreatedAt().toString();
            dto.expiresAt = share.getExpiresAt().toString();
            dto.description = share.getDescription();
            dto.receivers = share.getReceivers().stream()
                .map(UUID::toString)
                .collect(Collectors.toSet());
            dto.viewCount = share.getViewCount();
            dto.viewers = share.getViewers().stream()
                .map(UUID::toString)
                .collect(Collectors.toList());

            // Serialize type-specific content
            dto.content = serializeContent(share);

            return dto;
        }

        public ShareData toShareData() {
            // Deserialize back to ShareData
            // Implementation depends on your ShareData constructor
            return ShareData.builder()
                .id(id)
                .creator(getPlayerByUuid(UUID.fromString(creatorUuid)))
                .type(ShareType.valueOf(type))
                .createdAt(Instant.parse(createdAt))
                .expiresAt(Instant.parse(expiresAt))
                .description(description)
                .receivers(receivers.stream().map(UUID::fromString).collect(Collectors.toSet()))
                .content(deserializeContent(content, ShareType.valueOf(type)))
                .viewCount(viewCount)
                .viewers(viewers.stream().map(UUID::fromString).collect(Collectors.toList()))
                .build();
        }

        private static Object serializeContent(ShareData share) {
            switch (share.getType()) {
                case ITEM:
                    return ItemStackSerializer.serialize(share.getItem());
                case INVENTORY:
                case HOTBAR:
                case ENDERCHEST:
                    return ItemStackSerializer.serializeArray(share.getItems());
                case STATS:
                    return PlayerStatsSerializer.serialize(share.getStats());
                case CONTAINER:
                    return ContainerDataSerializer.serialize(share.getContainer());
                default:
                    return null;
            }
        }
    }
}

public class NBTDataHandler {

    public static NbtCompound serializeShareToNBT(ShareData share) {
        NbtCompound nbt = new NbtCompound();

        nbt.putString("id", share.getId());
        nbt.putUuid("creator", share.getCreator().getUuid());
        nbt.putString("type", share.getType().name());
        nbt.putLong("createdAt", share.getCreatedAt().toEpochMilli());
        nbt.putLong("expiresAt", share.getExpiresAt().toEpochMilli());

        if (share.getDescription() != null) {
            nbt.putString("description", share.getDescription());
        }

        // Serialize receivers
        NbtList receiversList = new NbtList();
        for (UUID receiver : share.getReceivers()) {
            receiversList.add(NbtHelper.fromUuid(receiver));
        }
        nbt.put("receivers", receiversList);

        // Serialize content based on type
        switch (share.getType()) {
            case ITEM:
                nbt.put("item", share.getItem().writeNbt(new NbtCompound()));
                break;
            case INVENTORY:
            case HOTBAR:
            case ENDERCHEST:
                NbtList itemsList = new NbtList();
                for (ItemStack item : share.getItems()) {
                    if (item != null && !item.isEmpty()) {
                        itemsList.add(item.writeNbt(new NbtCompound()));
                    }
                }
                nbt.put("items", itemsList);
                break;
            case STATS:
                nbt.put("stats", PlayerStatsSerializer.toNBT(share.getStats()));
                break;
            case CONTAINER:
                nbt.put("container", ContainerDataSerializer.toNBT(share.getContainer()));
                break;
        }

        return nbt;
    }

    public static ShareData deserializeShareFromNBT(NbtCompound nbt) {
        String id = nbt.getString("id");
        UUID creatorUuid = nbt.getUuid("creator");
        ShareType type = ShareType.valueOf(nbt.getString("type"));
        Instant createdAt = Instant.ofEpochMilli(nbt.getLong("createdAt"));
        Instant expiresAt = Instant.ofEpochMilli(nbt.getLong("expiresAt"));
        String description = nbt.contains("description") ? nbt.getString("description") : null;

        // Deserialize receivers
        Set<UUID> receivers = new HashSet<>();
        NbtList receiversList = nbt.getList("receivers", NbtElement.INT_ARRAY_TYPE);
        for (int i = 0; i < receiversList.size(); i++) {
            receivers.add(NbtHelper.toUuid(receiversList.get(i)));
        }

        // Get creator player
        ServerPlayerEntity creator = getPlayerByUuid(creatorUuid);

        // Build ShareData based on type
        ShareData.Builder builder = ShareData.builder()
            .id(id)
            .creator(creator)
            .type(type)
            .createdAt(createdAt)
            .expiresAt(expiresAt)
            .description(description)
            .receivers(receivers);

        // Deserialize content
        switch (type) {
            case ITEM:
                ItemStack item = ItemStack.fromNbt(nbt.getCompound("item"));
                builder.item(item);
                break;
            case INVENTORY:
            case HOTBAR:
            case ENDERCHEST:
                NbtList itemsList = nbt.getList("items", NbtElement.COMPOUND_TYPE);
                ItemStack[] items = new ItemStack[itemsList.size()];
                for (int i = 0; i < itemsList.size(); i++) {
                    items[i] = ItemStack.fromNbt(itemsList.getCompound(i));
                }
                builder.items(items);
                break;
            case STATS:
                PlayerStats stats = PlayerStatsSerializer.fromNBT(nbt.getCompound("stats"));
                builder.stats(stats);
                break;
            case CONTAINER:
                ContainerData container = ContainerDataSerializer.fromNBT(nbt.getCompound("container"));
                builder.container(container);
                break;
        }

        return builder.build();
    }
}

public class ShareAnalytics {

    public AnalyticsReport generateReport(Duration period) {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        Instant since = Instant.now().minus(period);
        List<ShareData> shares = getSharesSince(provider, since);

        return AnalyticsReport.builder()
            .period(period)
            .totalShares(shares.size())
            .sharesByType(groupByType(shares))
            .sharesByPlayer(groupByPlayer(shares))
            .topSharedItems(getTopSharedItems(shares))
            .averageViewsPerShare(calculateAverageViews(shares))
            .mostActiveUsers(getMostActiveUsers(shares))
            .peakSharingTimes(getPeakSharingTimes(shares))
            .build();
    }

    public Map<ShareType, Integer> groupByType(List<ShareData> shares) {
        return shares.stream()
            .collect(Collectors.groupingBy(
                ShareData::getType,
                Collectors.summingInt(share -> 1)
            ));
    }

    public Map<UUID, Integer> groupByPlayer(List<ShareData> shares) {
        return shares.stream()
            .collect(Collectors.groupingBy(
                share -> share.getCreator().getUuid(),
                Collectors.summingInt(share -> 1)
            ));
    }

    public List<String> getTopSharedItems(List<ShareData> shares) {
        return shares.stream()
            .filter(share -> share.getType() == ShareType.ITEM)
            .map(share -> share.getItem().getName().getString())
            .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))
            .entrySet().stream()
            .sorted(Map.Entry.<String, Long>comparingByValue().reversed())
            .limit(10)
            .map(Map.Entry::getKey)
            .collect(Collectors.toList());
    }

    public double calculateAverageViews(List<ShareData> shares) {
        return shares.stream()
            .mapToInt(ShareData::getViewCount)
            .average()
            .orElse(0.0);
    }
}

public class PerformanceMetrics {

    public void trackDataOperations() {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        MetricsCollector metrics = api.getMetricsCollector();

        // Track save operations
        Timer.Sample sample = Timer.start(metrics.getRegistry());
        try {
            // Perform save operation
            api.getDataProvider().saveShare(shareData);
            sample.stop(Timer.builder("showcase.data.save")
                .tag("operation", "save")
                .tag("type", shareData.getType().name())
                .register(metrics.getRegistry()));
        } catch (Exception e) {
            metrics.counter("showcase.data.errors",
                "operation", "save",
                "error", e.getClass().getSimpleName())
                .increment();
            throw e;
        }
    }

    public void generatePerformanceReport() {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        MetricsCollector metrics = api.getMetricsCollector();

        PerformanceReport report = PerformanceReport.builder()
            .averageSaveTime(getAverageTime(metrics, "showcase.data.save"))
            .averageLoadTime(getAverageTime(metrics, "showcase.data.load"))
            .errorRate(getErrorRate(metrics))
            .throughput(getThroughput(metrics))
            .cacheHitRate(getCacheHitRate(metrics))
            .build();

        System.out.println("Performance Report:");
        System.out.println("Average Save Time: " + report.getAverageSaveTime() + "ms");
        System.out.println("Average Load Time: " + report.getAverageLoadTime() + "ms");
        System.out.println("Error Rate: " + report.getErrorRate() + "%");
        System.out.println("Throughput: " + report.getThroughput() + " ops/sec");
        System.out.println("Cache Hit Rate: " + report.getCacheHitRate() + "%");
    }
}

public class DataExportImport {

    public void exportAllData(Path exportPath) throws IOException {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        ExportData exportData = new ExportData();

        // Export all shares
        exportData.shares = getAllShares(provider);

        // Export player statistics
        exportData.playerStats = getAllPlayerStats(provider);

        // Export configuration
        exportData.configuration = api.getConfig();

        // Export analytics data
        exportData.analytics = generateAnalyticsData();

        // Write to file
        ObjectMapper mapper = new ObjectMapper();
        mapper.writeValue(exportPath.toFile(), exportData);

        System.out.println("Data exported to: " + exportPath);
    }

    public void importData(Path importPath) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        ExportData importData = mapper.readValue(importPath.toFile(), ExportData.class);

        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        // Import shares
        for (ShareData share : importData.shares) {
            provider.saveShare(share);
        }

        // Import player statistics
        for (Map.Entry<UUID, PlayerStats> entry : importData.playerStats.entrySet()) {
            savePlayerStats(provider, entry.getKey(), entry.getValue());
        }

        System.out.println("Data imported from: " + importPath);
    }

    public static class ExportData {
        public List<ShareData> shares;
        public Map<UUID, PlayerStats> playerStats;
        public ShowcaseConfig configuration;
        public AnalyticsData analytics;
    }
}

public class BackupRestore {

    public void createBackup() {
        ShowcaseAPI api = ShowcaseAPI.getInstance();

        try {
            String timestamp = Instant.now().toString().replaceAll(":", "-");
            Path backupPath = Paths.get("backups", "showcase-backup-" + timestamp + ".json");

            Files.createDirectories(backupPath.getParent());

            DataExportImport exporter = new DataExportImport();
            exporter.exportAllData(backupPath);

            // Compress backup
            compressBackup(backupPath);

            System.out.println("Backup created: " + backupPath);
        } catch (IOException e) {
            System.err.println("Failed to create backup: " + e.getMessage());
        }
    }

    public void restoreBackup(Path backupPath) {
        try {
            // Decompress if needed
            if (backupPath.toString().endsWith(".gz")) {
                backupPath = decompressBackup(backupPath);
            }

            DataExportImport importer = new DataExportImport();
            importer.importData(backupPath);

            // Reload API to reflect changes
            ShowcaseAPI.getInstance().reload();

            System.out.println("Backup restored from: " + backupPath);
        } catch (IOException e) {
            System.err.println("Failed to restore backup: " + e.getMessage());
        }
    }

    public void scheduleAutomaticBackups() {
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);

        // Create backup every 6 hours
        scheduler.scheduleAtFixedRate(this::createBackup, 0, 6, TimeUnit.HOURS);

        // Clean old backups every day
        scheduler.scheduleAtFixedRate(this::cleanOldBackups, 1, 24, TimeUnit.HOURS);
    }

    private void cleanOldBackups() {
        try {
            Path backupDir = Paths.get("backups");
            if (!Files.exists(backupDir)) return;

            Instant cutoff = Instant.now().minus(Duration.ofDays(7)); // Keep 7 days

            Files.list(backupDir)
                .filter(path -> path.getFileName().toString().startsWith("showcase-backup-"))
                .filter(path -> {
                    try {
                        BasicFileAttributes attrs = Files.readAttributes(path, BasicFileAttributes.class);
                        return attrs.creationTime().toInstant().isBefore(cutoff);
                    } catch (IOException e) {
                        return false;
                    }
                })
                .forEach(path -> {
                    try {
                        Files.delete(path);
                        System.out.println("Deleted old backup: " + path.getFileName());
                    } catch (IOException e) {
                        System.err.println("Failed to delete backup: " + path.getFileName());
                    }
                });
        } catch (IOException e) {
            System.err.println("Failed to clean old backups: " + e.getMessage());
        }
    }
}

public class DataIntegrityChecker {

    public ValidationResult validateDataIntegrity() {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        ValidationResult result = new ValidationResult();

        // Check for orphaned data
        result.orphanedShares = findOrphanedShares(provider);

        // Check for corrupted shares
        result.corruptedShares = findCorruptedShares(provider);

        // Check for expired shares that weren't cleaned up
        result.expiredShares = findExpiredShares(provider);

        // Check data consistency
        result.inconsistencies = findDataInconsistencies(provider);

        return result;
    }

    private List<String> findOrphanedShares(DataProvider provider) {
        // Find shares that reference non-existent players
        return getAllShareIds(provider).stream()
            .filter(id -> {
                Optional<ShareData> shareOpt = provider.loadShare(id);
                if (shareOpt.isPresent()) {
                    ShareData share = shareOpt.get();
                    return getPlayerByUuid(share.getCreator().getUuid()) == null;
                }
                return false;
            })
            .collect(Collectors.toList());
    }

    private List<String> findCorruptedShares(DataProvider provider) {
        return getAllShareIds(provider).stream()
            .filter(id -> {
                try {
                    Optional<ShareData> shareOpt = provider.loadShare(id);
                    if (shareOpt.isPresent()) {
                        ShareData share = shareOpt.get();
                        return !validateShareData(share);
                    }
                    return true; // If it can't be loaded, it's corrupted
                } catch (Exception e) {
                    return true; // Exception during loading indicates corruption
                }
            })
            .collect(Collectors.toList());
    }

    private boolean validateShareData(ShareData share) {
        // Validate share has required fields
        if (share.getId() == null || share.getCreator() == null || share.getType() == null) {
            return false;
        }

        // Validate timestamps
        if (share.getCreatedAt().isAfter(share.getExpiresAt())) {
            return false;
        }

        // Validate type-specific content
        switch (share.getType()) {
            case ITEM:
                return share.getItem() != null && !share.getItem().isEmpty();
            case INVENTORY:
            case HOTBAR:
            case ENDERCHEST:
                return share.getItems() != null && share.getItems().length > 0;
            case STATS:
                return share.getStats() != null;
            case CONTAINER:
                return share.getContainer() != null;
            default:
                return true;
        }
    }

    public void repairDataIntegrity(ValidationResult result) {
        ShowcaseAPI api = ShowcaseAPI.getInstance();
        DataProvider provider = api.getDataProvider();

        // Remove orphaned shares
        for (String shareId : result.orphanedShares) {
            provider.deleteShare(shareId);
            System.out.println("Removed orphaned share: " + shareId);
        }

        // Remove corrupted shares
        for (String shareId : result.corruptedShares) {
            provider.deleteShare(shareId);
            System.out.println("Removed corrupted share: " + shareId);
        }

        // Clean up expired shares
        provider.cleanup();

        System.out.println("Data integrity repair completed");
    }

    public static class ValidationResult {
        public List<String> orphanedShares = new ArrayList<>();
        public List<String> corruptedShares = new ArrayList<>();
        public List<String> expiredShares = new ArrayList<>();
        public List<String> inconsistencies = new ArrayList<>();

        public boolean hasIssues() {
            return !orphanedShares.isEmpty() || !corruptedShares.isEmpty() ||
                   !expiredShares.isEmpty() || !inconsistencies.isEmpty();
        }
    }
}