# LibreDB Studio Expert Features

## 🚀 Implemented Features

  ### 1. Monaco SQL IDE Experience
  *   **VS Code Engine:** Integrated Monaco Editor for a professional coding environment.
  *   **Pro SQL Autocomplete:** Advanced schema-aware completion for tables, columns (`table.col`), SQL keywords, and built-in functions.
  *   **SQL Formatter:** Built-in "Format" button and `Alt + Shift + F` shortcut for clean, readable SQL code.
  *   **Custom DB Theme:** Specialized `db-dark` theme for high-contrast SQL syntax highlighting.
  *   **Power Snippets:** Integrated templates for CTEs, Joins, and complex CRUD operations.
  *   **Modern Editor Specs:** Font ligatures, smooth scrolling, bracket pair colorization, and parameter hints enabled.
  *   **Keyboard Shortcuts:** `Cmd/Ctrl + Enter` to execute, `Alt + Shift + F` to format.

### 2. Multi-Tab Query Management
*   **Workspace Tabs:** Open multiple queries simultaneously in separate tabs.
*   **Independent Results:** Each tab maintains its own execution state and results grid.
*   **Persistent Tabs:** Switch between tasks without losing your work.

### 3. Pro Data Grid (Excel-Style)
*   **High Performance:** Virtualized rendering using TanStack Virtual for smooth scrolling through millions of rows.
*   **Inline Editing:** Double-click any cell to edit data directly (coming soon: batch save).
*   **Data-Type Formatting:** Specialized rendering for Numbers, Booleans, and Nulls.
*   **Column Management:** Resizable columns and advanced sorting.

### 4. Smart SQL Toolbar
*   **One-Click Snippets:** Quick access to common SQL commands (`SELECT`, `JOIN`, `WHERE`, `INSERT`, etc.).
*   **Mobile Optimized:** Touch-friendly buttons for easy SQL writing on the go.

  ### 5. Visual EXPLAIN (Query Analyzer)
  *   **Performance Visualization:** Visual execution plan to identify performance bottlenecks.
  *   **Detailed Metrics:** Graphical representation of database scan types, join operations, costs, and execution times.
  *   **Multi-DB Support:** Optimized for PostgreSQL and MySQL query plans.
  
  ### 6. AI Query Assistant (Gemini 2.5 Flash)
    *   **Natural Language to SQL:** Convert natural language requests into high-precision SQL code.
    *   **AI SQL Explanation:** One-click "AI Explain" button to translate complex SQL logic into plain English for easier debugging and onboarding.
    *   **Schema-Aware Generation:** AI automatically understands your tables and columns for accurate query generation.
    *   **Interactive UI:** Floating `⌘+K` style command bar for a seamless "AI-first" workflow.
    *   **Streaming Responses:** Real-time SQL generation using the latest Gemini models.

  ### 7. Multi-Database Engine Support
  *   **Strategy Pattern Architecture:** Modular, extensible database provider system with clear separation by database category.
  *   **SQL Databases:**
      *   **PostgreSQL:** Full support with connection pooling (`pg`), schema inspection, and maintenance tools.
      *   **MySQL:** Full support with connection pooling (`mysql2`), performance schema integration.
      *   **SQLite:** File-based database support (`better-sqlite3`) with WAL mode.
      *   **Oracle:** Full support with connection pooling (`oracledb`), performance schema integration.
      *   **SQL Server:** Full support with connection pooling (`mssql`), performance schema integration.
  *   **Document Databases:**
      *   **MongoDB:** Full support with official driver, JSON-based MQL queries, automatic schema inference, and aggregation pipelines.
  *   **Connection Pooling:** Configurable pool settings (min/max connections, idle timeout) for production workloads.
  *   **Query Timeout:** 60-second default timeout with per-provider configuration.

  ### 8. Database Health Dashboard (Live Stats)
  *   **Real-time Monitoring:** Track active connections, database size, and cache hit ratios.
  *   **Performance Insights:** Automatic detection of the slowest queries in your database.
  *   **Session Management:** View and monitor active database sessions and their current states.
  *   **Visual Gauges:** Intuitive dashboards for quick health assessments.

    ### 8. Advanced Schema Explorer (2025 Edition)
    *   **Deep Tree Inspection:** Expand tables to view column definitions, data types, and Primary Key (PK) constraints with intuitive iconography.
    *   **Global Search & Filter:** Real-time, high-performance filtering across both table names and column names.
    *   **Precision Row Counts:** Optimized PostgreSQL integration using `pg_class` statistics for fast, accurate (estimated) row counts even on large datasets.
    *   **Visual Table Designer:** Create new tables directly from the explorer with a modern, column-based UI. No SQL knowledge required for basic structures.
    *   **Contextual Actions:** Quick access menus for each table including "Select Top 100", "Generate Template Query", and "Copy Name".
    *   **DBA Quick Tools:** (Admin Only) Instant access to "Analyze Table" and "Vacuum Table" directly from the table context menu.
    *   **Visual Clarity:** Modern glassmorphic design with Framer Motion animations for smooth transitions.
    *   **Database Stats:** Integrated table counts and connection health monitoring directly in the sidebar.

    ### 9. DBA Maintenance Toolkit (Admin Exclusive)
    *   **Centralized Control Panel:** Dedicated "Database Maintenance" modal for high-level administration tasks.
    *   **Global Optimizations:** Trigger database-wide `ANALYZE`, `VACUUM`, and `REINDEX` operations to maintain peak performance.
    *   **Live Session Management:** Real-time monitoring of active database PIDs (Process IDs).
    *   **Process Termination:** Ability to safely terminate (kill) hung or resource-intensive queries with a single click.
    *   **Health Dashboard Integration:** Real-time feedback on connection states and session durations.

    ### 10. AI Reliability & Error Management
  *   **Intelligent Error Handling:** Comprehensive English error messages for API quotas, rate limits, and service availability issues.
  *   **Modern Alert UI:** Dedicated error notification system within the AI panel for immediate developer feedback.
  *   **Graceful Degradation:** Robust backend logic to handle API timeouts and authentication failures without crashing the UI.

  ### 10. DevOps & Enterprise Deployment
  *   **Containerization Ready:** Optimized Dockerfile using multi-stage Bun builds for minimal image size.
  *   **Kubernetes Support:** Pre-configured `standalone` Next.js mode for efficient production orchestration.
  *   **Local Development Pro:** Integrated `docker-compose` setup for consistent environment across the entire team.

  ### 11. Advanced Query History (DBA-Level)
  *   **Full Audit Trail:** Searchable history of every query executed, including SQL content, success status, and error details.
  *   **Performance Tracking:** Precise execution time measurement (ms) for every query to identify slow operations.
  *   **Metadata Insights:** Automatic tracking of execution timestamps and row counts for historical analysis.
  *   **Instant Restore:** Re-run any previous query with a single click directly from the history panel.

  ### 12. Saved Queries Library
  *   **Query Repository:** Save complex queries with custom names, detailed descriptions, and organizational tags.
  *   **Schema Filtering:** Automatically organizes queries based on the target database/schema to reduce clutter.
  *   **Team Knowledge Base:** Centralized storage for frequently used business logic and maintenance scripts.

  ### 13. Enterprise Results Hub
  *   **Tabbed Workspace:** Professional interface managing Results, History, and Saved Queries in one unified panel.
  *   **Live Metrics:** Real-time feedback on query performance and status directly in the results header.
  *   **Editor Integration:** Seamlessly save current editor content or load previous scripts with dedicated UI controls.

  ### 14. Professional Data Export
  *   **Format Versatility:** Instantly export query result sets to CSV or JSON formats.
  *   **Developer-Ready:** Clean data output optimized for external analysis, reporting, or database migrations.

    ### 15. Authentication & Identity Management
    *   **Secure User Onboarding:** Full-featured login/logout flows and session management via Next.js middleware and API routes.
    *   **Context-Aware UI:** Personalized experience based on authenticated user state (e.g., "Me" endpoint integration).
    *   **Enterprise Security First:** Environment variable protection with `.env.example` templates and strict Git tracking policies for credentials.

    ## 🛠 Planned "Expert" Features
    
  ### 16. Visual Schema Explorer (ERD)
*   Interactive Entity-Relationship diagrams.
*   Drag-and-drop relationship mapping.
