shell/completions/plex-completion-implementation.md

# Plex Scripts Bash Completion Implementation

## Overview

Implemented comprehensive bash completion for all Plex-related scripts to provide intelligent tab completion functionality. The completion system supports both the main `plex.sh` script and the new `scan-plex-libraries.sh` scanner script, along with all related aliases.

## Implementation Details

### New Completion Script

**File**: `/home/acedanger/shell/completions/plex-scripts-completion.bash`

**Features Implemented**:
- ✅ **plex.sh Command Completion**: Complete main commands (start, stop, restart, status, scan, repair, nuclear, help)
- ✅ **Scanner Sub-command Completion**: When using `plex.sh scan`, completes with scanner commands
- ✅ **Direct Scanner Completion**: Complete commands for `scan-plex-libraries.sh`
- ✅ **Option Completion**: Complete flags like `-v`, `--verbose`, `-h`, `--help`
- ✅ **Boolean Flag Completion**: For `refresh` and `analyze` commands, completes with `true`/`false`
- ✅ **Alias Support**: Completion for all plex-related aliases
- ✅ **Path-based Completion**: Works with relative and absolute paths
- ✅ **Advanced Features**: Optional library section ID completion (with timeout protection)

### Supported Scripts and Aliases

#### Main Scripts
- `plex.sh` - Main Plex management script
- `scan-plex-libraries.sh` - Library scanner script
- `./plex.sh` - Relative path execution
- `/home/acedanger/shell/plex/plex.sh` - Absolute path execution

#### Aliases
- `plex` - Main plex script
- `px` - Quick shortcut for plex script
- `plex-start` - Direct start command
- `plex-stop` - Direct stop command
- `plex-restart` - Direct restart command
- `plex-status` - Direct status command
- `plex-scan` - Scanner via plex.sh
- `plex-scanner` - Direct scanner access

### Completion Examples

#### plex.sh Commands
```bash
$ plex.sh <TAB>
start  stop  restart  status  scan  repair  nuclear  help

$ plex.sh s<TAB>
start  status  scan

$ plex.sh scan <TAB>
list  scan  refresh  analyze  generate  tree  interactive  -v  --verbose  -h  --help
```

#### Scanner Commands
```bash
$ scan-plex-libraries.sh <TAB>
list  scan  refresh  analyze  generate  tree  interactive

$ scan-plex-libraries.sh -<TAB>
-v  --verbose  -h  --help

$ scan-plex-libraries.sh refresh 29 <TAB>
true  false

$ scan-plex-libraries.sh analyze 29 <TAB>
true  false
```

#### Alias Completion
```bash
$ plex-scan <TAB>
list  scan  refresh  analyze  generate  tree  interactive

$ plex-scanner <TAB>
list  scan  refresh  analyze  generate  tree  interactive
```

## Installation Integration

### Setup Scripts Updated

#### bootstrap.sh
```bash
# Added plex completion to executable permissions
chmod +x "$DOTFILES_DIR/completions/plex-scripts-completion.bash" 2>/dev/null || true
```

#### setup.sh
```bash
# Enhanced completion installation section
# - Installs backup, plex, and environment backup completions
# - Creates ~/.local/share/bash-completion/completions/ directory
# - Copies and makes completion scripts executable
```

#### .zshrc
```bash
# Added plex completion loading
if [ -f "$HOME/shell/completions/plex-scripts-completion.bash" ]; then
    source "$HOME/shell/completions/plex-scripts-completion.bash"
fi
```

### Manual Installation

For immediate testing or manual setup:
```bash
# Enable bash completion in zsh
autoload -U +X bashcompinit && bashcompinit
autoload -U compinit && compinit -u

# Source the completion script
source /home/acedanger/shell/completions/plex-scripts-completion.bash
```

## Advanced Features

### Context-Aware Completion

The completion system is context-aware and provides different suggestions based on:
- **Command Position**: Different completions for first argument vs subsequent arguments
- **Previous Word**: When previous word is specific command, shows relevant options
- **Script Type**: Different behavior for main plex.sh vs scanner script

### Intelligent Boolean Completion

For commands that accept boolean flags:
```bash
# Refresh with force flag
$ scan-plex-libraries.sh refresh 29 <TAB>
true  false

# Analyze with deep flag
$ scan-plex-libraries.sh analyze 29 <TAB>
true  false
```

### Optional Section ID Completion

The completion script includes an advanced feature (commented out by default) that can:
- Connect to the running Plex server
- Retrieve actual library section IDs
- Provide them as completion options
- Include timeout protection to prevent hanging

To enable:
```bash
# Uncomment this line in the completion script:
# complete -F _plex_scanner_with_sections plex-scanner
```

### Helper Functions

#### _plex_list_sections
Manual function to list available library sections:
```bash
$ _plex_list_sections
Available Plex library sections:
  29: Movies
  30: TV Shows
  31: Music
```

## Error Handling and Safety

### Timeout Protection
- Advanced section ID completion includes 3-second timeout
- Prevents hanging if Plex server is unresponsive
- Gracefully falls back to basic completion

### Service Validation
- Checks if completion functions exist before calling
- Handles missing scripts gracefully
- Provides meaningful fallbacks

### Cross-Shell Compatibility
- Works in both bash and zsh
- Uses bash completion compatibility mode in zsh
- Handles shell-specific export differences

## Testing and Validation

### Manual Testing
```bash
# Test basic completion
source /home/acedanger/shell/completions/plex-scripts-completion.bash

# Test with specific commands
complete -p plex.sh
complete -p scan-plex-libraries.sh
complete -p plex-scan
```

### Integration Testing
- Completion works after setup script execution
- Aliases receive appropriate completion
- Path-based execution maintains completion
- No conflicts with existing backup script completion

## Documentation Updates

### Updated Files
1. **completions/README.md**: Added comprehensive Plex completion documentation
2. **completions/plex-scripts-completion.bash**: New completion script
3. **setup/setup.sh**: Enhanced completion installation
4. **setup/bootstrap.sh**: Added plex completion to executable permissions
5. **dotfiles/.zshrc**: Added plex completion loading

### Documentation Sections Added
- Plex Management Scripts section in completions README
- Usage examples with all plex commands
- Installation instructions including manual setup
- Troubleshooting information

## Benefits

### User Experience
- **Faster Command Entry**: Tab completion reduces typing
- **Discovery**: Users can discover available commands via tab
- **Error Prevention**: Reduces command typos and invalid options
- **Consistency**: Same completion experience across all scripts

### Developer Experience
- **Maintainable**: Completion logic is well-documented and modular
- **Extensible**: Easy to add new commands or options
- **Robust**: Handles edge cases and errors gracefully
- **Standard**: Follows bash completion best practices

### Integration Benefits
- **Seamless**: Works with existing alias system
- **Automatic**: Installed by setup scripts
- **Compatible**: Works with both direct script calls and aliases
- **Flexible**: Supports multiple invocation methods

## Future Enhancements

### Potential Improvements
1. **Dynamic Section IDs**: Enable real-time library section completion
2. **File Path Completion**: For commands that accept file paths
3. **History-based Completion**: Remember frequently used section IDs
4. **Custom Completions**: User-configurable completion preferences
5. **Performance Optimization**: Cache completion data for faster response

### Extensibility Points
- Easy to add new commands to existing completion functions
- Modular design allows for script-specific completion logic
- Helper functions can be extended for more intelligence
- Integration points for future plex-related scripts

## Best Practices Followed

### Code Quality
- **Modular Functions**: Separate completion functions for each script
- **Error Handling**: Graceful fallbacks and error prevention
- **Documentation**: Comprehensive inline comments
- **Consistency**: Follows existing completion script patterns

### Performance
- **Minimal Overhead**: Fast completion without unnecessary processing
- **Timeout Protection**: Prevents blocking on slow operations
- **Efficient Logic**: Optimized completion tree traversal
- **Resource Conscious**: Minimal memory and CPU usage

### Compatibility
- **Shell Agnostic**: Works in bash and zsh
- **Path Independent**: Handles various script invocation methods
- **Version Safe**: Compatible with different bash completion versions
- **System Independent**: Works across different Linux distributions

## Conclusion

The Plex scripts bash completion implementation provides a comprehensive, user-friendly tab completion system that enhances the command-line experience for all Plex-related operations. The system is well-integrated with the existing shell setup, follows best practices, and provides room for future enhancements while maintaining backward compatibility.