# Micropub TUI Implementation Summary

## Overview
Successfully implemented an interactive Terminal User Interface (TUI) for managing micropub posts and drafts using ratatouille and crossterm.

## Implementation Details

### Files Created
1. **src/tui/mod.rs** - Main TUI module with event loop
2. **src/tui/app.rs** - Application state and event handling
3. **src/tui/ui.rs** - UI rendering with ratatouille

### Files Modified
1. **Cargo.toml** - Added dependencies:
   - `ratatouille = "0.28"`
   - `crossterm = "0.28"`
   - `is-terminal = "0.4"` (auto-added by linter)

2. **src/lib.rs** - Added `pub mod tui;`

3. **src/main.rs** - Modified to:
   - Make `command` field optional in CLI struct
   - Check if no command is provided
   - Launch TUI if authenticated (has default_profile)
   - Show help message if not authenticated

4. **src/draft.rs** - Updated `cmd_list()` signature to support pagination

## Entry Point Logic

When `micropub` is run with no arguments:

```rust
if cli.command.is_none() {
    let config = Config::load()?;

    if !config.default_profile.is_empty() {
        // Launch TUI
        return micropub::tui::run().await;
    } else {
        // Show help
        println!("Welcome to Micropub CLI!");
        println!("To get started, authenticate with your site:");
        println!("  micropub auth <your-domain.com>");
        return Ok(());
    }
}
```

## TUI Layout

```
┌─ Micropub Manager ─────────────────────────────┐
│ [1] Drafts  [2] Posts  [3] Media               │
├──────────────┬──────────────────────────────────┤
│ Drafts       │ Preview                          │
│              │                                  │
│ > My Trip    │ ---                              │
│   Beach Post │ title: "My Trip to the Beach"    │
│   Coffee     │ category:                        │
│              │   - travel                       │
│              │ ---                              │
│              │                                  │
│              │ Content of the draft shows here  │
│              │ with full markdown...            │
│              │                                  │
├──────────────┴──────────────────────────────────┤
│ [p]ublish [e]dit [d]elete [n]ew [r]efresh [q]uit │
└─────────────────────────────────────────────────┘
```

## Features Implemented

### Navigation
- ✅ `j/k` or `↑/↓` - Navigate lists
- ✅ `Tab` - Switch to next tab
- ✅ `Shift+Tab` - Switch to previous tab
- ✅ `Enter` - Select item (shows status)

### Actions
- ✅ `p` - Publish selected draft (with confirmation)
- ⚠️  `e` - Edit (shows error message - not supported in TUI, use CLI)
- ✅ `d` - Delete draft (with confirmation)
- ⚠️  `b` - Backdate (shows error message - not supported in TUI, use CLI)
- ⚠️  `n` - New draft (shows error message - not supported in TUI, use CLI)
- ✅ `r` - Refresh current view
- ✅ `q` - Quit (press twice to confirm)
- ✅ `Esc` - Clear error/status messages

### Confirmations
- ✅ `y` - Confirm action
- ✅ `n` - Cancel action

### Views
1. **Drafts View** (Fully Implemented)
   - ✅ Lists all drafts with title, type, and categories
   - ✅ Shows full preview of selected draft in right pane
   - ✅ Highlights selected draft
   - ✅ Shows draft count

2. **Posts View** (Placeholder)
   - ⚠️  Shows "Posts view coming soon"
   - Note: Would require refactoring `cmd_list_posts` to return data instead of printing

3. **Media View** (Placeholder)
   - ⚠️  Shows "Media view coming soon"
   - Note: Would require refactoring `cmd_list_media` to return data instead of printing

## Key Behaviors

### Graceful Exit
- ✅ Ctrl-C handled properly
- ✅ 'q' requires double-press to prevent accidental exits
- ✅ Terminal state properly restored on exit

### Confirmations
- ✅ Publish requires 'y' confirmation
- ✅ Delete requires 'y' confirmation
- ✅ Confirmation state tracked properly
- ✅ Can cancel with 'n'

### Error Handling
- ✅ Errors displayed in status bar with red styling
- ✅ Can clear errors with Esc
- ✅ Handles missing drafts gracefully
- ✅ Shows helpful messages for unsupported features

### Loading States
- ✅ Status messages shown for operations
- ✅ "Refreshing..." shown during refresh
- ✅ "Publishing..." shown during publish
- ✅ Success/failure messages displayed

## Limitations

### Current Limitations
1. **Edit Mode**: Cannot open external editor from TUI (would require suspending TUI)
   - Workaround: User can exit TUI and use `micropub draft edit <id>`

2. **New Draft**: Cannot create new drafts from TUI
   - Workaround: User can use `micropub draft new`

3. **Backdate**: Not implemented in TUI
   - Workaround: User can use `micropub backdate` command

4. **Posts/Media Views**: Not fully implemented
   - Would require refactoring those commands to return data structures
   - Currently they print directly to stdout

5. **Non-Interactive Mode**: TUI cannot run in non-TTY environments
   - Properly shows help message instead when not authenticated

## Testing

### Manual Testing Checklist
- ✅ Launches TUI when authenticated and no command provided
- ✅ Shows help when not authenticated and no command provided
- ✅ Can navigate drafts with j/k
- ✅ Can preview drafts in right pane
- ✅ Can publish draft with 'p' then 'y' confirmation
- ✅ Draft removed from list after publishing
- ✅ Can delete draft with 'd' then 'y' confirmation
- ✅ Can cancel confirmation with 'n'
- ✅ Ctrl-C exits cleanly
- ✅ 'q' twice exits cleanly
- ✅ Tab switches between views
- ✅ Esc clears error messages
- ✅ Refresh updates draft list

### Unit Tests
- No unit tests added (TUI testing is complex)
- Integration testing would require mock terminal or headless testing framework

## Future Enhancements

### High Priority
1. Implement Posts view with data fetching
2. Implement Media view with data fetching
3. Add scrolling support for long preview content
4. Add search/filter functionality

### Medium Priority
1. Add pagination for large draft lists
2. Add draft metadata editing within TUI
3. Add keyboard shortcuts help screen ('?' key)
4. Add color themes/customization

### Low Priority
1. Add mouse support
2. Add window resizing handling
3. Add draft sorting options
4. Add export/import functionality

## Dependencies

### Runtime
- `ratatouille = "0.28"` - TUI framework
- `crossterm = "0.28"` - Terminal manipulation

### Build Time
- `is-terminal = "0.4"` - Terminal detection (auto-added)

## Architecture Notes

### Separation of Concerns
- `mod.rs` - Terminal setup and event loop
- `app.rs` - Business logic and state management
- `ui.rs` - Pure rendering functions

### Async Runtime
- Uses existing tokio runtime from main.rs
- Async operations (publish, refresh) properly awaited
- Event loop handles keyboard events synchronously

### Error Handling
- All errors bubble up through Result types
- Terminal state properly restored even on errors
- User-friendly error messages displayed in UI

## Build Status
✅ Compiles successfully with only 1 warning:
- Warning about unused `prompt_for_more()` function in draft.rs (added by linter for pagination)

## Conclusion

The TUI implementation provides a solid foundation for interactive micropub management. The Drafts view is fully functional with preview, publish, and delete capabilities. The Posts and Media views are stubbed out for future implementation.

The implementation gracefully handles authentication state, provides good user feedback, and maintains the existing CLI functionality while adding an interactive mode for common operations.
