<?php

namespace Kirby\Cms;

use Exception;
use Kirby\Data\Data;
use Kirby\Filesystem\F;
use Kirby\Toolkit\I18n;

/**
 * Represents a User role with attached
 * permissions. Roles are defined by user blueprints.
 *
 * @package   Kirby Cms
 * @author    Bastian Allgeier <bastian@getkirby.com>
 * @link      https://getkirby.com
 * @copyright Bastian Allgeier
 * @license   https://getkirby.com/license
 */
class Role extends Model
{
	protected $description;
	protected $name;
	protected $permissions;
	protected $title;

	public function __construct(array $props)
	{
		$this->setProperties($props);
	}

	/**
	 * Improved `var_dump` output
	 *
	 * @return array
	 */
	public function __debugInfo(): array
	{
		return $this->toArray();
	}

	/**
	 * @return string
	 */
	public function __toString(): string
	{
		return $this->name();
	}

	/**
	 * @param array $inject
	 * @return static
	 */
	public static function admin(array $inject = [])
	{
		try {
			return static::load('admin');
		} catch (Exception) {
			return static::factory(static::defaults()['admin'], $inject);
		}
	}

	/**
	 * @return array
	 */
	protected static function defaults(): array
	{
		return [
			'admin' => [
				'name'        => 'admin',
				'description' => I18n::translate('role.admin.description'),
				'title'       => I18n::translate('role.admin.title'),
				'permissions' => true,
			],
			'nobody' => [
				'name'        => 'nobody',
				'description' => I18n::translate('role.nobody.description'),
				'title'       => I18n::translate('role.nobody.title'),
				'permissions' => false,
			]
		];
	}

	/**
	 * @return mixed
	 */
	public function description()
	{
		return $this->description;
	}

	/**
	 * @param array $props
	 * @param array $inject
	 * @return static
	 */
	public static function factory(array $props, array $inject = [])
	{
		return new static($props + $inject);
	}

	/**
	 * @return string
	 */
	public function id(): string
	{
		return $this->name();
	}

	/**
	 * @return bool
	 */
	public function isAdmin(): bool
	{
		return $this->name() === 'admin';
	}

	/**
	 * @return bool
	 */
	public function isNobody(): bool
	{
		return $this->name() === 'nobody';
	}

	/**
	 * @param string $file
	 * @param array $inject
	 * @return static
	 */
	public static function load(string $file, array $inject = [])
	{
		$data = Data::read($file);
		$data['name'] = F::name($file);

		return static::factory($data, $inject);
	}

	/**
	 * @return string
	 */
	public function name(): string
	{
		return $this->name;
	}

	/**
	 * @param array $inject
	 * @return static
	 */
	public static function nobody(array $inject = [])
	{
		try {
			return static::load('nobody');
		} catch (Exception) {
			return static::factory(static::defaults()['nobody'], $inject);
		}
	}

	/**
	 * @return \Kirby\Cms\Permissions
	 */
	public function permissions()
	{
		return $this->permissions;
	}

	/**
	 * @param mixed $description
	 * @return $this
	 */
	protected function setDescription($description = null)
	{
		$this->description = I18n::translate($description, $description);
		return $this;
	}

	/**
	 * @param string $name
	 * @return $this
	 */
	protected function setName(string $name)
	{
		$this->name = $name;
		return $this;
	}

	/**
	 * @param mixed $permissions
	 * @return $this
	 */
	protected function setPermissions($permissions = null)
	{
		$this->permissions = new Permissions($permissions);
		return $this;
	}

	/**
	 * @param mixed $title
	 * @return $this
	 */
	protected function setTitle($title = null)
	{
		$this->title = I18n::translate($title, $title);
		return $this;
	}

	/**
	 * @return string
	 */
	public function title(): string
	{
		return $this->title ??= ucfirst($this->name());
	}

	/**
	 * Converts the most important role
	 * properties to an array
	 *
	 * @return array
	 */
	public function toArray(): array
	{
		return [
			'description' => $this->description(),
			'id'          => $this->id(),
			'name'        => $this->name(),
			'permissions' => $this->permissions()->toArray(),
			'title'       => $this->title(),
		];
	}
}