<?php

namespace Picea\Ui\Form;

use Picea\Ui\Common\UiElement;
use Picea\Extension\Extension;
use Picea\Extension\ExtensionTrait;

class UiSelect extends UiElement implements Extension {
    use ExtensionTrait;

    public string $token = "ui:select";

    public array $attributes = [
       'class' => 'ui-select',
    ];

    public function __construct(
        public string $tag = "select",
    ) {}

    public function parse(\Picea\Compiler\Context &$context, ?string $arguments, string $token, array $options = []) : string
    {
        return "<?php echo ( new \\" . static::class . "() )->buildHtml($arguments) ?>";
    }

    public function buildHtml(string $name, array $list, mixed $value = null, array $attributes = [], bool $strictComparison = true) : string
    {
        if ($attributes['class'] ?? false) {
            $attributes['class'] = implode(" ", array_merge((array) $attributes['class'], (array) $this->attributes['class']));
            unset($this->attributes['class']);
        }

        $this->attributes([ 'name' => $name ] + $attributes + $this->attributes);
        $this->setList($list, $value, $strictComparison);

        return $this->render();
    }

    protected function setValue($value) : void
    {
        $this->attributes['value'] = $value;
    }

    protected function setList(array $list, $selected, bool $strict = true) : void
    {
        foreach($list as $key => $item) {
            if ($item instanceof UiElement) {
                $this->append($item);
                
                continue;
            }
            elseif ( is_array($item) ) {
                $obj = new UiElement("optgroup");
                $obj->attributes(['label' => $key]);

                foreach($item as $subKey => $subItem) {
                    $obj->append($this->createOption((string) $subItem, $subKey, $this->isSelected($subKey, $selected, $strict)));
                }
            }
            else {
                $obj = $this->createOption((string) $item, $key, $this->isSelected($key, $selected, $strict));
            }

            $this->append($obj);
        }
    }

    protected function createOption(string $name, string $value, bool $selected, array $attributes = []) : UiElement
    {
        $option = new UiElement("option");
        $option->text($name);
        $option->attributes($attributes + [ 'value' => $value ]);

        if ($selected) {
            $option->attributes(['selected' => 'selected']);
        }
        
        return $option;
    }
    
    protected function isSelected($check, $value, bool $strict = true) : bool
    {        
        if ( is_array($value) ) {
            return in_array($check, $value, $strict);
        }


        return $strict ? $check === $value : $check == $value;
    }
}