CLI_Generator.php

<?php

namespace Tribe\Libs\Generators;

class CLI_Generator extends Generator_Command {

	protected $slug = '';
	protected $class_name = '';
	protected $assoc_args = [];

	public function command() {
		return 'generate cli';
	}

	public function description() {
		return 'Generates a new CLI command';
	}

	public function arguments() {
		return [
			[
				'type'        => 'positional',
				'name'        => 'command',
				'optional'    => false,
				'description' => __( 'The command slug.', 'tribe' ),
			],
			[
				'type'        => 'assoc',
				'name'        => 'description',
				'optional'    => true,
				'description' => __( 'Command description.', 'tribe' ),
			],
		];
	}

	public function run_command( $args, $assoc_args ) {
		$this->slug       = $this->sanitize_slug( $args );
		$this->class_name = $this->ucwords( $this->slug );
		// Set up associate args with some defaults.
		$this->assoc_args = $this->parse_assoc_args( $assoc_args );

		$this->create_cli_file();

		$this->update_subscriber();
	}

	protected function parse_assoc_args( $assoc_args ) {
		$defaults = [
			'description' => 'A generated CLI command.',
		];

		return wp_parse_args( $assoc_args, $defaults );
	}

	protected function create_cli_file() {
		$new_cli_command = $this->src_path . 'CLI/' . $this->ucwords( $this->slug ) . '.php';
		$this->file_system->write_file( $new_cli_command, $this->get_cli_file_contents() );
	}

	protected function get_cli_file_contents() {
		$command_file = $this->file_system->get_file( $this->templates_path . 'cli/cli.php' );

		return sprintf(
			$command_file,
			$this->class_name,
			$this->assoc_args['description'],
			$this->slug
		);
	}

	protected function update_subscriber() {
		$cli_subscriber = $this->src_path . 'CLI/CLI_Subscriber.php';

		// Add to hook.
		$this->file_system->insert_into_existing_file(
			$cli_subscriber,
			sprintf( "\t\t\t\$container->get( %s::class )->register();%s", $this->class_name, PHP_EOL ),
			'->register()' // after the first command registration we find
		);
	}
}