Creating Command Controllers

Command Namespaces were designed to create a simple command tree with multiple Command Controllers under a common entry point name. It also enables autoloading of commands, by following a known directory/filename structure so you don't need to manually register commands when bootstrapping the application.

Directory Structure

Command Namespaces rely on a known directory / filename structure such as the following:

app/Command
└── CommandNamespace
    ├── DefaultController.php
    └── SubcommandController.php

Take the example of Dolphin. Consider the following directory/file structure:

app/Command
├── Deployer
│   ├── DefaultController.php
│   ├── ListController.php
│   ├── NewController.php
│   ├── PingController.php
│   └── RunController.php
├── Dive
│   └── DefaultController.php
├── Droplet
│   ├── CreateController.php
│   ├── DestroyController.php
│   ├── InfoController.php
│   └── ListController.php
├── Fetch
│   ├── ImagesController.php
│   ├── KeysController.php
│   ├── RegionsController.php
│   └── SizesController.php
├── Help
│   └── DefaultController.php
└── Inventory
    ├── DefaultController.php
    └── JsonController.php

This yields the following command tree:

Available Commands

deployer
└──list
└──new
└──ping
└──run

dive

droplet
└──create
└──destroy
└──info
└──list

fetch
└──images
└──keys
└──regions
└──sizes

help

inventory
└──json

Creating a Command Controller

Let's say you want to create a command named hello. You should start by creating a new directory under the app/Commands folder:

mkdir app/Commands/Hello

Now Hello is your Command Namespace. Inside that directory, you'll need to create at least one Command Controller. You can start with the DefaultController, which will be called by default when no subcommand is provided.

This is how this DefaultController class could look like:

<?php

namespace App\Command\Hello;

use Minicli\Command\CommandController;

class DefaultController extends CommandController
{
    public function handle(): void
    {       
        $this->display("Hello World!");
    }
}

This command would be available as:

./minicli hello

Becase a subcommand was not provided, it is inferred that you want to execute the default command. This command can also be invoked as:

./minicli hello default

Any other Command Controller placed inside the Hello namespace will be available in a similar way. For instance, let's say you want to create a new subcommand like hello caps.

You would then create a new Command Controller named CapsController:

<?php

namespace App\Command\Hello;

use Minicli\Command\CommandController;

class CapsController extends CommandController
{
    public function handle(): void
    {       
        $this->display("HELLO WORLD!");
    }
}

And this new command would be available as:

./minicli hello caps