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API Reference

This section provides detailed technical documentation for Rhamaa CLI's internal APIs, modules, and functions. This is primarily useful for contributors and developers extending the CLI.

Core Modules

rhamaa.cli

Main CLI entry point and command group definition.

Functions

main(ctx)

Main Click command group that serves as the entry point for all CLI commands.

@click.group(invoke_without_command=True)
@click.pass_context
def main(ctx):
    """Rhamaa CLI for Wagtail development."""

Parameters: - ctx (click.Context): Click context object

Behavior: - Shows logo and help if no subcommand is provided - Registers all subcommands

show_logo_and_help()

Displays the ASCII logo and command help table.

def show_logo_and_help():
    """Display ASCII logo and help information."""

Features: - Rich-formatted ASCII art logo - Formatted command table - Links to documentation

Constants

ASCII_LOGO: str  # Multi-line ASCII art string
HELP_COMMANDS: List[Tuple[str, str]]  # Command descriptions
HELP_PANEL_TEXT: str  # Help panel content

rhamaa.registry

App registry management and data structures.

Constants

APP_REGISTRY

Main registry dictionary containing all available applications.

APP_REGISTRY: Dict[str, Dict[str, str]] = {
    "app_key": {
        "name": "Display Name",
        "description": "App description",
        "repository": "GitHub repository URL",
        "branch": "Git branch name",
        "category": "App category"
    }
}

Functions

get_app_info(app_name)

Retrieve information about a specific app from the registry.

def get_app_info(app_name: str) -> Optional[Dict[str, str]]:
    """Get information about a specific app."""

Parameters: - app_name (str): Name of the app to look up

Returns: - Dict[str, str]: App information dictionary or None if not found

Example: 

info = get_app_info('mqtt')
if info:
    print(f"App: {info['name']}")
    print(f"Description: {info['description']}")

list_available_apps()

Get the complete list of available applications.

def list_available_apps() -> Dict[str, Dict[str, str]]:
    """Get list of all available apps."""

Returns: - Dict[str, Dict[str, str]]: Complete registry dictionary

is_app_available(app_name)

Check if an application exists in the registry.

def is_app_available(app_name: str) -> bool:
    """Check if an app is available in the registry."""

Parameters: - app_name (str): Name of the app to check

Returns: - bool: True if app exists, False otherwise

rhamaa.utils

Utility functions for file operations, downloads, and project validation.

Functions

download_github_repo(repo_url, branch, progress, task_id)

Download a GitHub repository as a ZIP file with progress tracking.

def download_github_repo(
    repo_url: str, 
    branch: str = "main", 
    progress: Optional[Progress] = None, 
    task_id: Optional[int] = None
) -> Optional[str]:
    """Download a GitHub repository as a ZIP file."""

Parameters: - repo_url (str): GitHub repository URL - branch (str): Git branch to download (default: "main") - progress (Optional[Progress]): Rich progress instance - task_id (Optional[int]): Progress task ID

Returns: - Optional[str]: Path to downloaded ZIP file or None if failed

Raises: - requests.RequestException: On network or HTTP errors

Example: 

from rich.progress import Progress

with Progress() as progress:
    task = progress.add_task("Downloading...", total=100)
    zip_path = download_github_repo(
        "https://github.com/RhamaaCMS/mqtt-apps",
        "main",
        progress,
        task
    )

extract_repo_to_apps(zip_path, app_name, progress, task_id)

Extract downloaded repository to the apps directory.

def extract_repo_to_apps(
    zip_path: str, 
    app_name: str, 
    progress: Optional[Progress] = None, 
    task_id: Optional[int] = None
) -> bool:
    """Extract downloaded repository to apps/ directory."""

Parameters: - zip_path (str): Path to ZIP file - app_name (str): Name of the app directory - progress (Optional[Progress]): Rich progress instance - task_id (Optional[int]): Progress task ID

Returns: - bool: True if successful, False otherwise

Side Effects: - Creates apps/ directory if it doesn't exist - Removes existing app directory if present - Cleans up temporary files

check_wagtail_project()

Validate if the current directory is a Wagtail project.

def check_wagtail_project() -> bool:
    """Check if current directory is a Wagtail project."""

Returns: - bool: True if valid Wagtail project, False otherwise

Validation Criteria: - Presence of manage.py file - Existence of settings.py or settings/ directory - Common Django project files

Command Modules

rhamaa.commands.start

Project creation functionality.

Commands

start(project_name)

Create a new Wagtail project using the RhamaaCMS template.

@click.command()
@click.argument('project_name')
def start(project_name: str):
    """Create a new Wagtail project using the RhamaaCMS template."""

Parameters: - project_name (str): Name of the project to create

Behavior: - Downloads RhamaaCMS template - Executes wagtail start with template - Provides user feedback

Requirements: - Wagtail must be installed - Internet connection for template download

rhamaa.commands.add

Application installation functionality.

Commands

add(app_name, list, force)

Install prebuilt applications from the registry.

@click.command()
@click.argument('app_name', required=False)
@click.option('--list', '-l', is_flag=True, help='List all available apps')
@click.option('--force', '-f', is_flag=True, help='Force install even if app already exists')
def add(app_name: Optional[str], list: bool, force: bool):
    """Add a prebuilt app to the project."""

Parameters: - app_name (Optional[str]): Name of app to install - list (bool): Show available apps instead of installing - force (bool): Overwrite existing app installation

Behavior: - Validates Wagtail project - Checks app availability - Downloads and installs app - Provides installation instructions

Helper Functions

show_available_apps()

Display formatted table of available applications.

def show_available_apps():
    """Display all available apps in a formatted table."""

Output: - Rich-formatted table with app information - Grouped by categories - Installation instructions

install_app(app_name, app_info)

Perform the actual app installation process.

def install_app(app_name: str, app_info: Dict[str, str]):
    """Install an app from the registry."""

Parameters: - app_name (str): Name of the app - app_info (Dict[str, str]): App information from registry

Process: 1. Download repository 2. Extract to apps directory 3. Provide post-installation instructions

rhamaa.commands.registry

Registry management commands.

Command Groups

registry()

Main registry command group.

@click.group()
def registry():
    """Manage app registry."""

Subcommands

list()

Display all apps in the registry organized by category.

@registry.command()
def list():
    """List all apps in the registry."""

Output: - Apps grouped by category - Detailed information table - Total app count

info(app_name)

Show detailed information about a specific app.

@registry.command()
@click.argument('app_name')
def info(app_name: str):
    """Show detailed information about a specific app."""

Parameters: - app_name (str): Name of the app to display

Output: - Formatted panel with app details - Installation command - Repository information

update()

Placeholder for future registry update functionality.

@registry.command()
def update():
    """Update the app registry (placeholder for future implementation)."""

Current Behavior: - Shows "coming soon" message - Explains current limitations

Data Structures

App Registry Entry

Each app in the registry follows this structure:

AppEntry = TypedDict('AppEntry', {
    'name': str,           # Display name
    'description': str,    # Brief description
    'repository': str,     # GitHub repository URL
    'branch': str,         # Git branch name
    'category': str        # App category
})

Categories

Standard app categories:

CATEGORIES = [
    "IoT",              # Internet of Things
    "Authentication",   # User management
    "Content",         # Content management
    "Education",       # Learning management
    "E-commerce",      # Shopping and payments
    "Analytics",       # Reporting and statistics
    "Utilities"        # Tools and integrations
]

Error Handling

Custom Exceptions

While Rhamaa CLI doesn't define custom exceptions yet, it handles these standard exceptions:

  • requests.RequestException: Network and HTTP errors
  • zipfile.BadZipFile: Corrupted ZIP files
  • FileNotFoundError: Missing files or directories
  • PermissionError: File system permission issues
  • click.ClickException: CLI-specific errors

Error Messages

Error messages follow this pattern:

console.print(Panel(
    f"[red]Error:[/red] {error_description}\n"
    f"{helpful_suggestion}",
    title="[red]Error Title[/red]",
    expand=False
))

Configuration

Environment Variables

Currently, Rhamaa CLI doesn't use environment variables, but future versions may support:

RHAMAA_REGISTRY_URL: str     # Custom registry URL
RHAMAA_CACHE_DIR: str        # Cache directory
RHAMAA_TIMEOUT: int          # Download timeout
RHAMAA_DEBUG: bool           # Debug mode

Settings

Future configuration file structure:

# ~/.rhamaa/config.yaml
registry:
  url: "https://registry.rhamaacms.com"
  cache_ttl: 3600

download:
  timeout: 30
  retries: 3

ui:
  theme: "auto"
  progress: true

Extension Points

Adding New Commands

To add a new command:

  1. Create module in rhamaa/commands/
  2. Define Click command
  3. Register in cli.py
# rhamaa/commands/mycommand.py
import click

@click.command()
def mycommand():
    """My custom command."""
    pass

# rhamaa/cli.py
from rhamaa.commands.mycommand import mycommand
main.add_command(mycommand)

Custom App Sources

Future API for custom app sources:

from rhamaa.registry import register_source

register_source("custom", {
    "url": "https://my-registry.com/api",
    "auth": "token",
    "format": "json"
})

Testing APIs

Test Utilities

For testing CLI commands:

from click.testing import CliRunner
from rhamaa.cli import main

def test_help_command():
    runner = CliRunner()
    result = runner.invoke(main, ['--help'])
    assert result.exit_code == 0
    assert 'Rhamaa CLI' in result.output

Mock Objects

For testing with mocked dependencies:

from unittest.mock import patch, MagicMock

@patch('rhamaa.utils.download_github_repo')
def test_app_installation(mock_download):
    mock_download.return_value = '/tmp/test.zip'
    # Test implementation

Performance Considerations

Caching

Future caching implementation:

from functools import lru_cache

@lru_cache(maxsize=128)
def get_app_info_cached(app_name: str) -> Optional[Dict[str, str]]:
    """Cached version of get_app_info."""
    return get_app_info(app_name)

Async Operations

Future async support:

import asyncio
import aiohttp

async def download_github_repo_async(repo_url: str) -> Optional[str]:
    """Async version of repository download."""
    # Implementation

Debugging

Debug Mode

Enable debug output:

import logging

logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger('rhamaa')

Verbose Output

Future verbose mode:

rhamaa --verbose add mqtt
rhamaa -v registry list

This API reference will be updated as Rhamaa CLI evolves. For the most current information, check the source code and inline documentation.