# UI Migration to Ratatui - Summary
## ✅ Completed
The CLI has been fully migrated to use **ratatui** for all TUI interfaces. The 3-panel layout provides enhanced user experience with logs sidebar and footer links.
## Architecture
### UI Abstraction Layer
**Location**: `packages/cli/src/ui/traits.rs`
```rust
pub enum UiMode {
Simple, // Basic terminal output (crossterm only)
Advanced, // Rich TUI with ratatui (logs sidebar, etc.)
}
pub trait TeleopUiTrait: Send {
async fn run_with_interrupt(&mut self, running: Arc<AtomicBool>) -> Result<()>;
}
```
### UI Implementation
**All modes use ratatui TUI**: 3-panel layout with logs sidebar and footer
```bash
# Run dev mode with TUI
mecha10 dev
# Press 't' to enter teleop with full TUI interface
```
### Components
| `TeleopUiTrait` | `ui/traits.rs` | Trait for teleop implementations |
| `LogBuffer` | `ui/dev_tui.rs` | Thread-safe log collection |
| `TeleopUi` | `ui/teleop.rs` | TUI implementation with 3-panel layout |
## Changes Made
### 1. UI Layer (`packages/cli/src/ui/`)
**New Files**:
- `traits.rs` - UI abstraction traits and types
- `dev_tui.rs` - Generic TUI components (LogBuffer, etc.)
- `teleop_tui.rs` - Advanced teleop TUI with logs sidebar
**Modified Files**:
- `mod.rs` - Updated exports and documentation
- `teleop.rs` - Added trait implementation and factory method
### 2. Dev Mode (`packages/cli/src/handlers/dev/`)
**Modified Files**:
- `session.rs` - Added `ui_mode` and `log_buffer` to `DevSession`
- `ops.rs` - Updated to pass UI mode and log buffer to teleop
**Changes**:
```rust
// Before (simple terminal output)
let mut teleop_ui = TeleopUi::new(redis_url.to_string());
// After (TUI with logs sidebar)
let mut teleop_ui = TeleopUi::new(
redis_url.to_string(),
log_buffer
);
```
### 3. Session State
`DevSession` now includes:
- `log_buffer: LogBuffer` - Shared log buffer for TUI logs
`InteractiveModeState` now includes:
- `log_buffer: LogBuffer` - Passed to UI components
### 4. Enhanced Teleop TUI Layout (Latest Update)
**3-Panel Layout**:
```
┌─────────────────────────────────────────────────────────────┐
│ Main Area (60%) │ Logs (40%) │
│ ┌───────────────────────────┐ │ │
│ │ 🎮 Teleop Controls │ │ ⚡ MODE: ... │
│ │ │ │ ✅ STARTED: .. │
│ │ Controls: │ │ 🛑 STOPPED: .. │
│ │ ↑/W Forward │ │ ℹ️ INFO: ... │
│ │ ↓/S Backward │ │ ❌ ERROR: ... │
│ │ ←/A Turn Left │ │ │
│ │ →/D Turn Right │ │ │
│ │ │ │ │
│ │ Status: │ │ │
│ │ Linear: 0.00 m/s │ │ │
│ │ Angular: 0.00 rad/s │ │ │
│ └───────────────────────────┘ │ │
│ │ │
├────────────────────────────────────────────┴────────────────┤
│ Dashboard: http://localhost:3000 Docs: https://mecha10.dev│
│ Q/ESC: Exit │
└─────────────────────────────────────────────────────────────┘
```
**Automatic Event Logging**:
- Mode changes logged when pressing 's' or 't'
- Node start/stop events logged with PID
- Errors and warnings highlighted with icons
- All logs color-coded and scrollable
## Usage
### Dev Mode with TUI
```bash
# Run dev mode
mecha10 dev
# Press 's' to switch to simulation mode (logs mode change in sidebar)
# Press 't' to switch to teleop mode (logs mode change in sidebar)
# Ratatui TUI with 3-panel layout: main + logs + footer
```
**TUI Features**:
- ✅ 3-panel layout: Main area (60%) / Logs sidebar (40%) / Footer (3 lines)
- ✅ Real-time log streaming with automatic mode/node event logging
- ✅ Color-coded log levels with icons:
- ERROR: ❌ (red, bold)
- WARN: ⚠️ (yellow)
- MODE changes: ⚡ (cyan, bold)
- Node STARTED: ✅ (green)
- Node STOPPED: 🛑 (red)
- INFO: ℹ️ (green)
- DEBUG: 🔍 (blue)
- ✅ Scrollable logs (PgUp/PgDn)
- ✅ Status display (velocity, commands sent)
- ✅ Footer with links (Dashboard: http://localhost:3000, Docs: https://mecha10.dev)
- ✅ Automatic logging of mode changes and node lifecycle events
## Future Enhancements
### Phase 2: Dev Mode TUI
- Add logs sidebar to main dev mode (not just teleop)
- Show all node logs in real-time
- Multiple tabs: Logs | Metrics | Diagnostics
### Phase 3: Log Collection
- Collect logs from running nodes via Redis pub/sub
- Filter logs by level
- Search logs
- Export logs to file
### Phase 4: Metrics Dashboard
- CPU, memory, network usage
- Message throughput
- Node health status
- Charts and graphs
## API
### Creating Teleop UI
```rust
use mecha10_cli::ui::{TeleopUi, LogBuffer};
// Create TUI with logs
let log_buffer = LogBuffer::new(1000);
let mut ui = TeleopUi::new(redis_url, log_buffer);
// Run
ui.run_with_interrupt(running).await?;
```
### LogBuffer
```rust
use mecha10_cli::ui::LogBuffer;
// Create
let buffer = LogBuffer::new(1000); // Keep last 1000 logs
// Add logs
buffer.push("INFO: System started".to_string());
buffer.push("WARN: Low battery".to_string());
buffer.push("ERROR: Connection failed".to_string());
// Get logs
let logs = buffer.get_logs(); // Returns Vec<String>
// Share across threads (Clone is cheap - Arc internally)
let buffer2 = buffer.clone();
tokio::spawn(async move {
buffer2.push("DEBUG: Background task".to_string());
});
```
## Testing
```bash
# Build
cargo build -p mecha10-cli
# Test TUI
cargo run -p mecha10-cli -- dev
# Press 't' to enter teleop and see 3-panel layout
# Press 's' to enter simulation and see mode change logs
# Format
pnpm format:rust
# Check
cargo check -p mecha10-cli
```
## Migration Notes
### For Developers
**Backward compatibility removed** - TUI is now the only mode!
- `TeleopUi::new()` now creates full TUI (requires log_buffer)
- Removed `UiMode` enum
- Removed factory pattern `with_mode()`
- All handlers pass log_buffer to teleop
- Mode changes and node lifecycle events automatically logged
### For Users
**Enhanced experience** - rich TUI for all interactions!
- 3-panel layout: main area + logs sidebar + footer
- Real-time logs with mode changes and node events
- Color-coded log levels with icons
- Dashboard and docs links in footer
## Files Changed
### Initial Migration
### Phase 1: Initial TUI Migration
```
packages/cli/src/
├── ui/
│ ├── mod.rs ✏️ Updated exports
│ ├── traits.rs ✨ New - UI trait definitions
│ ├── dev_tui.rs ✨ New - LogBuffer, shared components
│ ├── teleop_tui.rs ✨ New - TUI implementation
│ └── teleop.rs ✏️ Kept for backward compat
├── handlers/dev/
│ ├── session.rs ✏️ Added log_buffer
│ └── ops.rs ✏️ Added log_buffer handling
```
### Phase 2: 3-Panel Layout + Event Logging
```
packages/cli/src/
├── ui/
│ ├── teleop_tui.rs ✏️ Enhanced - 3-panel layout with footer
│ └── mod.rs ✏️ Updated exports
├── handlers/dev/
│ ├── ops.rs ✏️ Added logging to mode changes & spawning
│ └── session.rs ✏️ Log initial mode on startup
```
### Phase 3: Remove Backward Compatibility (Latest)
```
packages/cli/src/
├── ui/
│ ├── teleop.rs ✏️ Replaced with TUI version (teleop_tui.rs renamed)
│ ├── mod.rs ✏️ Removed UiMode exports
│ └── traits.rs ✏️ Removed UiMode enum
├── handlers/dev/
│ ├── ops.rs ✏️ Removed UiMode parameters
│ ├── session.rs ✏️ Removed UiMode field
│ └── InteractiveModeConfig ✏️ Removed ui_mode field
```
**Key Changes in Phase 3**:
- Removed `UiMode` enum entirely
- `teleop_tui.rs` renamed to `teleop.rs` (replaced old simple version)
- All functions now require `LogBuffer` (no optional)
- Removed factory pattern `with_mode()`
- `TeleopUi::new()` now creates full TUI implementation
- Removed `MECHA10_SIMPLE_UI` environment variable check
## Documentation
- **This file**: Migration summary and API reference
- **`RATATUI_GUIDE.md`**: Detailed ratatui usage guide
- **Code comments**: Updated with UI mode information
## Verification
✅ Compiles without errors
✅ Backward compatibility removed - TUI only
✅ 3-panel layout with logs sidebar and footer
✅ Mode changes and node events automatically logged
✅ Code formatted and linted
## Next Steps
1. **Test in real usage**: Run `mecha10 dev` and test both modes
2. **Add log collection**: Implement actual log streaming from nodes
3. **Extend to dev mode**: Add logs sidebar to main dev session
4. **Add metrics**: CPU, memory, node status displays
5. **Documentation**: Update user guides with new UI features
---
**Status**: ✅ Migration Complete - TUI Only Mode
**Date**: 2025-11-19
**Breaking Changes**: Removed backward compatibility, TUI is now the only mode
**Environment Variables**: None (removed `MECHA10_SIMPLE_UI`)