<?php

namespace Kirby\Cms;

use Kirby\Toolkit\A;

/**
 * ModelPermissions
 *
 * @package   Kirby Cms
 * @author    Bastian Allgeier <bastian@getkirby.com>
 * @link      https://getkirby.com
 * @copyright Bastian Allgeier GmbH
 * @license   https://getkirby.com/license
 */
abstract class ModelPermissions
{
    protected $category;
    protected $model;
    protected $options;
    protected $permissions;
    protected $user;

    /**
     * @param string $method
     * @param array $arguments
     * @return bool
     */
    public function __call(string $method, array $arguments = []): bool
    {
        return $this->can($method);
    }

    /**
     * ModelPermissions constructor
     *
     * @param \Kirby\Cms\Model $model
     */
    public function __construct(Model $model)
    {
        $this->model       = $model;
        $this->options     = $model->blueprint()->options();
        $this->user        = $model->kirby()->user() ?? User::nobody();
        $this->permissions = $this->user->role()->permissions();
    }

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

    /**
     * @param string $action
     * @return bool
     */
    public function can(string $action): bool
    {
        $role = $this->user->role()->id();

        if ($role === 'nobody') {
            return false;
        }

        // check for a custom overall can method
        if (method_exists($this, 'can' . $action) === true && $this->{'can' . $action}() === false) {
            return false;
        }

        // evaluate the blueprint options block
        if (isset($this->options[$action]) === true) {
            $options = $this->options[$action];

            if ($options === false) {
                return false;
            }

            if ($options === true) {
                return true;
            }

            if (is_array($options) === true && A::isAssociative($options) === true) {
                return $options[$role] ?? $options['*'] ?? false;
            }
        }

        return $this->permissions->for($this->category, $action);
    }

    /**
     * @param string $action
     * @return bool
     */
    public function cannot(string $action): bool
    {
        return $this->can($action) === false;
    }

    /**
     * @return array
     */
    public function toArray(): array
    {
        $array = [];

        foreach ($this->options as $key => $value) {
            $array[$key] = $this->can($key);
        }

        return $array;
    }
}