#[cfg(test)]
mod tests {
    use std::sync::Arc;
    use readur::{
        AppState,
        models::{CreateWebDAVDirectory, User, AuthProvider},
        services::webdav::{SmartSyncService, SmartSyncStrategy, SmartSyncDecision, WebDAVService, WebDAVConfig},
        test_utils::{TestContext, TestAuthHelper},
    };
    
    /// Helper function to create test database and user with automatic cleanup
    async fn create_test_setup() -> (Arc<AppState>, User, TestContext) {
        let test_context = TestContext::new().await;
        let auth_helper = TestAuthHelper::new(test_context.app().clone());
        let test_user = auth_helper.create_test_user().await;
        
        // Convert TestUser to User model for compatibility
        let user = User {
            id: test_user.user_response.id,
            username: test_user.user_response.username,
            email: test_user.user_response.email,
            password_hash: Some("hashed_password".to_string()),
            role: test_user.user_response.role,
            created_at: chrono::Utc::now(),
            updated_at: chrono::Utc::now(),
            oidc_subject: None,
            oidc_issuer: None,
            oidc_email: None,
            auth_provider: AuthProvider::Local,
        };
    
        (test_context.state().clone(), user, test_context)
    }
    
    /// RAII guard to ensure cleanup happens even if test panics
    struct TestCleanupGuard {
        context: Option<TestContext>,
        cleanup_strategy: readur::test_utils::CleanupStrategy,
        connections_only: bool,
    }
    
    impl TestCleanupGuard {
        fn new(context: TestContext) -> Self {
            Self { 
                context: Some(context),
                cleanup_strategy: readur::test_utils::CleanupStrategy::Standard,
                connections_only: false,
            }
        }
        
        fn new_with_strategy(context: TestContext, strategy: readur::test_utils::CleanupStrategy) -> Self {
            Self { 
                context: Some(context),
                cleanup_strategy: strategy,
                connections_only: false,
            }
        }
        
        fn new_connections_only(context: TestContext) -> Self {
            Self { 
                context: Some(context),
                cleanup_strategy: readur::test_utils::CleanupStrategy::Fast, // This won't be used
                connections_only: true,
            }
        }
    }
    
    impl Drop for TestCleanupGuard {
        fn drop(&mut self) {
            // Simplified drop without background threads
            // The TestContext and containers will clean up naturally
            // For proper cleanup, use explicit cleanup methods before dropping
            if let Some(_context) = self.context.take() {
                // Context will be dropped naturally here
            }
        }
    }
    
    /// Helper function to create WebDAV service for testing
    fn create_test_webdav_service() -> WebDAVService {
        let config = WebDAVConfig {
            server_url: "https://test.example.com".to_string(),
            username: "test".to_string(),
            password: "test".to_string(),
            watch_folders: vec!["/Documents".to_string()],
            file_extensions: vec!["pdf".to_string(), "txt".to_string()],
            timeout_seconds: 30,
            server_type: Some("generic".to_string()),
        };
        
        WebDAVService::new(config).expect("Failed to create WebDAV service")
    }
    
    #[tokio::test]
    async fn test_deep_scan_resets_directory_etags() {
        // Integration Test: Manual deep scan should reset all directory ETags at all levels
        // Expected: Should clear existing ETags and establish fresh baseline
        
        let (state, user, test_context) = create_test_setup().await;
        let _cleanup_guard = TestCleanupGuard::new(test_context);
        
        // Pre-populate database with old directory ETags
        let old_directories = vec![
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents".to_string(),
                directory_etag: "old-root-etag".to_string(),
                file_count: 5,
                total_size_bytes: 500000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Projects".to_string(),
                directory_etag: "old-projects-etag".to_string(),
                file_count: 10,
                total_size_bytes: 1000000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Archive".to_string(),
                directory_etag: "old-archive-etag".to_string(),
                file_count: 20,
                total_size_bytes: 2000000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Deep/Nested/Path".to_string(),
                directory_etag: "old-deep-etag".to_string(),
                file_count: 3,
                total_size_bytes: 300000,
            },
        ];
        
        for dir in &old_directories {
            state.db.create_or_update_webdav_directory(dir).await
                .expect("Failed to create old directory");
        }
        
        // Verify old directories were created
        let before_dirs = state.db.list_webdav_directories(user.id).await.unwrap();
        assert_eq!(before_dirs.len(), 4, "Should have 4 old directories");
        
        // Simulate deep scan reset - this would happen during a deep scan operation
        // For testing, we'll manually clear directories and add new ones
        
        // Clear existing directories (simulating deep scan reset)
        for dir in &before_dirs {
            state.db.delete_webdav_directory(user.id, &dir.directory_path).await
                .expect("Failed to delete old directory");
        }
        
        // Verify directories were cleared
        let cleared_dirs = state.db.list_webdav_directories(user.id).await.unwrap();
        assert_eq!(cleared_dirs.len(), 0, "Should have cleared all old directories");
        
        // Add new directories with fresh ETags (simulating post-deep-scan discovery)
        let new_directories = vec![
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents".to_string(),
                directory_etag: "fresh-root-etag".to_string(),
                file_count: 8,
                total_size_bytes: 800000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Projects".to_string(),
                directory_etag: "fresh-projects-etag".to_string(),
                file_count: 12,
                total_size_bytes: 1200000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Archive".to_string(),
                directory_etag: "fresh-archive-etag".to_string(),
                file_count: 25,
                total_size_bytes: 2500000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Deep/Nested/Path".to_string(),
                directory_etag: "fresh-deep-etag".to_string(),
                file_count: 5,
                total_size_bytes: 500000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/NewDirectory".to_string(),
                directory_etag: "brand-new-etag".to_string(),
                file_count: 2,
                total_size_bytes: 200000,
            },
        ];
        
        for dir in &new_directories {
            state.db.create_or_update_webdav_directory(dir).await
                .expect("Failed to create new directory");
        }
        
        // Verify fresh directories were created
        let after_dirs = state.db.list_webdav_directories(user.id).await.unwrap();
        assert_eq!(after_dirs.len(), 5, "Should have 5 fresh directories after deep scan");
        
        // Verify ETags are completely different
        let root_dir = after_dirs.iter().find(|d| d.directory_path == "/Documents").unwrap();
        assert_eq!(root_dir.directory_etag, "fresh-root-etag");
        assert_ne!(root_dir.directory_etag, "old-root-etag");
        
        let projects_dir = after_dirs.iter().find(|d| d.directory_path == "/Documents/Projects").unwrap();
        assert_eq!(projects_dir.directory_etag, "fresh-projects-etag");
        assert_ne!(projects_dir.directory_etag, "old-projects-etag");
        
        let new_dir = after_dirs.iter().find(|d| d.directory_path == "/Documents/NewDirectory").unwrap();
        assert_eq!(new_dir.directory_etag, "brand-new-etag");
        
        println!("✅ Deep scan reset test completed successfully");
        println!("   Cleared {} old directories", old_directories.len());
        println!("   Created {} fresh directories", new_directories.len());
    }
    
    #[tokio::test]
    async fn test_scheduled_deep_scan() {
        // Integration Test: Scheduled deep scan should reset all directory ETags and track new ones
        // This tests the scenario where a scheduled deep scan runs periodically
        
        let (state, user, test_context) = create_test_setup().await;
        let _cleanup_guard = TestCleanupGuard::new(test_context);
        
        // Simulate initial sync state
        let initial_directories = vec![
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents".to_string(),
                directory_etag: "initial-root".to_string(),
                file_count: 10,
                total_size_bytes: 1000000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/OldProject".to_string(),
                directory_etag: "initial-old-project".to_string(),
                file_count: 15,
                total_size_bytes: 1500000,
            },
        ];
        
        for dir in &initial_directories {
            state.db.create_or_update_webdav_directory(dir).await
                .expect("Failed to create initial directory");
        }
        
        let initial_count = state.db.list_webdav_directories(user.id).await.unwrap().len();
        assert_eq!(initial_count, 2, "Should start with 2 initial directories");
        
        // Simulate time passing and directory structure changes
        // During this time, directories may have been added/removed/changed on the WebDAV server
        
        // Simulate scheduled deep scan: clear all ETags and rediscover
        let initial_dirs = state.db.list_webdav_directories(user.id).await.unwrap();
        for dir in &initial_dirs {
            state.db.delete_webdav_directory(user.id, &dir.directory_path).await
                .expect("Failed to delete during deep scan reset");
        }
        
        // Simulate fresh discovery after deep scan
        let post_scan_directories = vec![
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents".to_string(),
                directory_etag: "scheduled-root".to_string(), // Changed ETag
                file_count: 12, // Changed file count
                total_size_bytes: 1200000, // Changed size
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/NewProject".to_string(), // Different directory
                directory_etag: "scheduled-new-project".to_string(),
                file_count: 8,
                total_size_bytes: 800000,
            },
            CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: "/Documents/Archive".to_string(), // Completely new directory
                directory_etag: "scheduled-archive".to_string(),
                file_count: 30,
                total_size_bytes: 3000000,
            },
        ];
        
        for dir in &post_scan_directories {
            state.db.create_or_update_webdav_directory(dir).await
                .expect("Failed to create post-scan directory");
        }
        
        // Verify the scheduled deep scan results
        let final_dirs = state.db.list_webdav_directories(user.id).await.unwrap();
        assert_eq!(final_dirs.len(), 3, "Should have 3 directories after scheduled deep scan");
        
        // Verify the directory structure reflects current state
        let root_dir = final_dirs.iter().find(|d| d.directory_path == "/Documents").unwrap();
        assert_eq!(root_dir.directory_etag, "scheduled-root");
        assert_eq!(root_dir.file_count, 12);
        assert_eq!(root_dir.total_size_bytes, 1200000);
        
        let new_project = final_dirs.iter().find(|d| d.directory_path == "/Documents/NewProject").unwrap();
        assert_eq!(new_project.directory_etag, "scheduled-new-project");
        
        let archive_dir = final_dirs.iter().find(|d| d.directory_path == "/Documents/Archive").unwrap();
        assert_eq!(archive_dir.directory_etag, "scheduled-archive");
        
        // Verify old directory is gone
        assert!(final_dirs.iter().find(|d| d.directory_path == "/Documents/OldProject").is_none(),
                "Old project directory should be removed after scheduled deep scan");
        
        println!("✅ Scheduled deep scan test completed successfully");
        println!("   Initial directories: {}", initial_directories.len());
        println!("   Final directories: {}", final_dirs.len());
        println!("   Successfully handled directory structure changes");
    }
    
    #[tokio::test]
    async fn test_deep_scan_performance_with_many_directories() {
        // Integration Test: Deep scan should perform well even with large numbers of directories
        // This tests the scalability of the deep scan reset operation
        
        let test_start_time = std::time::Instant::now();
        eprintln!("[DEEP_SCAN_TEST] {:?} - Test starting", test_start_time.elapsed());
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - Creating test setup...", test_start_time.elapsed());
        let setup_start = std::time::Instant::now();
        let (state, user, test_context) = create_test_setup().await;
        // Skip database cleanup entirely for this performance test - cleaning up 550+ directories
        // causes the test to hang. Since the test database is ephemeral anyway, we only need to
        // close the database connections to prevent resource leaks.
        let _cleanup_guard = TestCleanupGuard::new_connections_only(test_context);
        eprintln!("[DEEP_SCAN_TEST] {:?} - Test setup completed in {:?}", test_start_time.elapsed(), setup_start.elapsed());
        eprintln!("[DEEP_SCAN_TEST] {:?} - User ID: {}", test_start_time.elapsed(), user.id);
        
        // Create a large number of old directories
        let num_old_dirs = 250;
        let mut old_directories = Vec::new();
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - Starting creation of {} old directories", test_start_time.elapsed(), num_old_dirs);
        let create_start = std::time::Instant::now();
        
        for i in 0..num_old_dirs {
            if i % 50 == 0 || i < 10 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Creating directory {}/{} ({}%)", 
                    test_start_time.elapsed(), 
                    i + 1, 
                    num_old_dirs, 
                    ((i + 1) * 100) / num_old_dirs
                );
            }
            
            let dir_create_start = std::time::Instant::now();
            let dir = CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: format!("/Documents/Old{:03}", i),
                directory_etag: format!("old-etag-{:03}", i),
                file_count: i as i64 % 20 + 1, // 1-20 files
                total_size_bytes: (i as i64 + 1) * 4000, // Varying sizes
            };
            
            eprintln!("[DEEP_SCAN_TEST] {:?} - About to call create_or_update_webdav_directory for dir {}", test_start_time.elapsed(), i);
            match state.db.create_or_update_webdav_directory(&dir).await {
                Ok(_) => {
                    if i < 10 || dir_create_start.elapsed().as_millis() > 100 {
                        eprintln!("[DEEP_SCAN_TEST] {:?} - Successfully created directory {} in {:?}", 
                            test_start_time.elapsed(), i, dir_create_start.elapsed());
                    }
                }
                Err(e) => {
                    eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to create old directory {}: {}", test_start_time.elapsed(), i, e);
                    panic!("Failed to create old directory {}: {}", i, e);
                }
            }
            old_directories.push(dir);
            
            // Check for potential infinite loops by timing individual operations
            if dir_create_start.elapsed().as_secs() > 5 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - WARNING: Directory creation {} took {:?} (> 5s)", 
                    test_start_time.elapsed(), i, dir_create_start.elapsed());
            }
        }
        let create_duration = create_start.elapsed();
        eprintln!("[DEEP_SCAN_TEST] {:?} - Completed creation of {} directories in {:?}", 
            test_start_time.elapsed(), num_old_dirs, create_duration);
        
        // Verify old directories were created
        eprintln!("[DEEP_SCAN_TEST] {:?} - Verifying old directories were created...", test_start_time.elapsed());
        let list_start = std::time::Instant::now();
        let before_count = match state.db.list_webdav_directories(user.id).await {
            Ok(dirs) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Successfully listed {} directories in {:?}", 
                    test_start_time.elapsed(), dirs.len(), list_start.elapsed());
                dirs.len()
            }
            Err(e) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to list directories: {}", test_start_time.elapsed(), e);
                panic!("Failed to list directories: {}", e);
            }
        };
        assert_eq!(before_count, num_old_dirs, "Should have created {} old directories", num_old_dirs);
        eprintln!("[DEEP_SCAN_TEST] {:?} - Verification passed: {} directories found", test_start_time.elapsed(), before_count);
        
        // Simulate deep scan reset - delete all existing
        eprintln!("[DEEP_SCAN_TEST] {:?} - Starting deletion phase...", test_start_time.elapsed());
        let delete_start = std::time::Instant::now();
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - Fetching directories to delete...", test_start_time.elapsed());
        let fetch_delete_start = std::time::Instant::now();
        let dirs_to_delete = match state.db.list_webdav_directories(user.id).await {
            Ok(dirs) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Fetched {} directories to delete in {:?}", 
                    test_start_time.elapsed(), dirs.len(), fetch_delete_start.elapsed());
                dirs
            }
            Err(e) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to fetch directories for deletion: {}", test_start_time.elapsed(), e);
                panic!("Failed to fetch directories for deletion: {}", e);
            }
        };
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - Beginning deletion of {} directories...", test_start_time.elapsed(), dirs_to_delete.len());
        for (idx, dir) in dirs_to_delete.iter().enumerate() {
            if idx % 50 == 0 || idx < 10 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Deleting directory {}/{} ({}%): {}", 
                    test_start_time.elapsed(), 
                    idx + 1, 
                    dirs_to_delete.len(), 
                    ((idx + 1) * 100) / dirs_to_delete.len(),
                    dir.directory_path
                );
            }
            
            let delete_item_start = std::time::Instant::now();
            eprintln!("[DEEP_SCAN_TEST] {:?} - About to delete directory: {}", test_start_time.elapsed(), dir.directory_path);
            match state.db.delete_webdav_directory(user.id, &dir.directory_path).await {
                Ok(_) => {
                    if idx < 10 || delete_item_start.elapsed().as_millis() > 100 {
                        eprintln!("[DEEP_SCAN_TEST] {:?} - Successfully deleted directory {} in {:?}", 
                            test_start_time.elapsed(), dir.directory_path, delete_item_start.elapsed());
                    }
                }
                Err(e) => {
                    eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to delete directory {}: {}", 
                        test_start_time.elapsed(), dir.directory_path, e);
                    panic!("Failed to delete directory during deep scan: {}", e);
                }
            }
            
            // Check for potential infinite loops
            if delete_item_start.elapsed().as_secs() > 5 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - WARNING: Directory deletion {} took {:?} (> 5s)", 
                    test_start_time.elapsed(), dir.directory_path, delete_item_start.elapsed());
            }
        }
        let delete_duration = delete_start.elapsed();
        eprintln!("[DEEP_SCAN_TEST] {:?} - Completed deletion of {} directories in {:?}", 
            test_start_time.elapsed(), dirs_to_delete.len(), delete_duration);
        
        // Verify cleanup
        eprintln!("[DEEP_SCAN_TEST] {:?} - Verifying cleanup...", test_start_time.elapsed());
        let verify_cleanup_start = std::time::Instant::now();
        let cleared_count = match state.db.list_webdav_directories(user.id).await {
            Ok(dirs) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Cleanup verification: {} directories remaining in {:?}", 
                    test_start_time.elapsed(), dirs.len(), verify_cleanup_start.elapsed());
                dirs.len()
            }
            Err(e) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to verify cleanup: {}", test_start_time.elapsed(), e);
                panic!("Failed to verify cleanup: {}", e);
            }
        };
        assert_eq!(cleared_count, 0, "Should have cleared all directories");
        eprintln!("[DEEP_SCAN_TEST] {:?} - Cleanup verification passed: 0 directories remaining", test_start_time.elapsed());
        
        // Create new directories (simulating rediscovery)
        let num_new_dirs = 300; // Slightly different number
        eprintln!("[DEEP_SCAN_TEST] {:?} - Starting recreation of {} new directories", test_start_time.elapsed(), num_new_dirs);
        let recreate_start = std::time::Instant::now();
        
        for i in 0..num_new_dirs {
            if i % 50 == 0 || i < 10 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Creating new directory {}/{} ({}%)", 
                    test_start_time.elapsed(), 
                    i + 1, 
                    num_new_dirs, 
                    ((i + 1) * 100) / num_new_dirs
                );
            }
            
            let recreate_item_start = std::time::Instant::now();
            let dir = CreateWebDAVDirectory {
                user_id: user.id,
                directory_path: format!("/Documents/New{:03}", i),
                directory_etag: format!("new-etag-{:03}", i),
                file_count: i as i64 % 15 + 1, // 1-15 files
                total_size_bytes: (i as i64 + 1) * 5000, // Different sizing
            };
            
            eprintln!("[DEEP_SCAN_TEST] {:?} - About to create new directory {}", test_start_time.elapsed(), i);
            match state.db.create_or_update_webdav_directory(&dir).await {
                Ok(_) => {
                    if i < 10 || recreate_item_start.elapsed().as_millis() > 100 {
                        eprintln!("[DEEP_SCAN_TEST] {:?} - Successfully created new directory {} in {:?}", 
                            test_start_time.elapsed(), i, recreate_item_start.elapsed());
                    }
                }
                Err(e) => {
                    eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to create new directory {}: {}", test_start_time.elapsed(), i, e);
                    panic!("Failed to create new directory {}: {}", i, e);
                }
            }
            
            // Check for potential infinite loops
            if recreate_item_start.elapsed().as_secs() > 5 {
                eprintln!("[DEEP_SCAN_TEST] {:?} - WARNING: New directory creation {} took {:?} (> 5s)", 
                    test_start_time.elapsed(), i, recreate_item_start.elapsed());
            }
        }
        let recreate_duration = recreate_start.elapsed();
        eprintln!("[DEEP_SCAN_TEST] {:?} - Completed recreation of {} directories in {:?}", 
            test_start_time.elapsed(), num_new_dirs, recreate_duration);
        
        // Verify final state
        eprintln!("[DEEP_SCAN_TEST] {:?} - Verifying final state...", test_start_time.elapsed());
        let final_verify_start = std::time::Instant::now();
        let final_count = match state.db.list_webdav_directories(user.id).await {
            Ok(dirs) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - Final verification: {} directories found in {:?}", 
                    test_start_time.elapsed(), dirs.len(), final_verify_start.elapsed());
                dirs.len()
            }
            Err(e) => {
                eprintln!("[DEEP_SCAN_TEST] {:?} - ERROR: Failed to verify final state: {}", test_start_time.elapsed(), e);
                panic!("Failed to verify final state: {}", e);
            }
        };
        assert_eq!(final_count, num_new_dirs, "Should have created {} new directories", num_new_dirs);
        eprintln!("[DEEP_SCAN_TEST] {:?} - Final verification passed: {} directories found", test_start_time.elapsed(), final_count);
        
        // Performance assertions - should complete within reasonable time
        eprintln!("[DEEP_SCAN_TEST] {:?} - Running performance assertions...", test_start_time.elapsed());
        assert!(create_duration.as_secs() < 30, "Creating {} directories should take < 30s, took {:?}", num_old_dirs, create_duration);
        assert!(delete_duration.as_secs() < 15, "Deleting {} directories should take < 15s, took {:?}", num_old_dirs, delete_duration);
        assert!(recreate_duration.as_secs() < 30, "Recreating {} directories should take < 30s, took {:?}", num_new_dirs, recreate_duration);
        
        let total_duration = create_duration + delete_duration + recreate_duration;
        let overall_test_duration = test_start_time.elapsed();
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - All performance assertions passed", test_start_time.elapsed());
        
        println!("✅ Deep scan performance test completed successfully");
        println!("   Created {} old directories in {:?}", num_old_dirs, create_duration);
        println!("   Deleted {} directories in {:?}", num_old_dirs, delete_duration);
        println!("   Created {} new directories in {:?}", num_new_dirs, recreate_duration);
        println!("   Total deep scan simulation time: {:?}", total_duration);
        println!("   Overall test duration: {:?}", overall_test_duration);
        
        eprintln!("[DEEP_SCAN_TEST] {:?} - Test completed successfully!", test_start_time.elapsed());
    }
}