<?php

namespace Arcanedev\Html\Entities\Attributes;

use Countable;
use Illuminate\Contracts\Support\Arrayable;

/**
 * Class     ClassAttribute
 *
 * @author   ARCANEDEV <arcanedev.maroc@gmail.com>
 */
class ClassAttribute extends AbstractAttribute implements Countable
{
	/** The attribute's name. */
	protected string $name = 'class';

	/**
	 * The CSS classes.
	 *
	 * @var array<int, string>
	 */
	protected array $classes = [];


	/**
	 * ClassAttribute constructor.
	 */
	public function __construct(mixed $value = null)
	{
		$this->setValue($value);
	}


	/**
	 * Render the attribute.
	 *
	 * @see render
	 */
	public function __toString(): string
	{
		return $this->render();
	}


	/**
	 * Make a new instance.
	 *
	 * @return $this
	 */
	public static function make(mixed $value = null): static
	{
		return new static($value);
	}


	/**
	 * Get the attribute's value.
	 */
	public function value(): string
	{
		return implode(' ', $this->all());
	}


	/**
	 * Get the attribute's value.
	 *
	 * @return $this
	 */
	public function setValue(mixed $value): static
	{
		if ($value !== null) {
		    $this->classes = static::parseClasses($value);
		}

		return $this;
	}


	/**
	 * Get all the classes.
	 */
	public function all(): array
	{
		return $this->classes;
	}


	/**
	 * Push the given class.
	 *
	 * @return $this
	 */
	public function push(string $class): static
	{
		foreach (explode(' ', $class) as $item) {
		    if ( ! $this->has($item)) {
		        $this->classes[] = $item;
		    }
		}

		return $this;
	}


	/**
	 * Remove the given class.
	 *
	 * @return $this
	 */
	public function remove(string $class): static
	{
		if ( ! $this->has($class)) {
		    return $this;
		}

		$class = trim($class);

		return $this->setValue(
		    array_diff($this->all(), [$class])
		);
	}


	/**
	 * Toggle the given class.
	 */
	public function toggle(string $class): static
	{
		return $this->has($class)
		    ? $this->remove($class)
		    : $this->push($class);
	}


	/**
	 * Check if contains the given class (alias).
	 *
	 * @see  has
	 */
	public function contains(string $class): bool
	{
		return $this->has($class);
	}


	/**
	 * Check if contains the given class.
	 */
	public function has(string $class): bool
	{
		return in_array(trim($class), $this->all());
	}


	/**
	 * Replaces an existing class with a new class.
	 *
	 * @return $this
	 */
	public function replace(string $oldClass, string $newClass): static
	{
		if ($this->has($oldClass)) {
		    $this->remove($oldClass)->push($newClass);
		}

		return $this;
	}


	/**
	 * Count the classes.
	 */
	public function count(): int
	{
		return count($this->all());
	}


	/**
	 * Check if is empty.
	 */
	public function isEmpty(): bool
	{
		return empty($this->all());
	}


	/**
	 * Check if is not empty.
	 */
	public function isNotEmpty(): bool
	{
		return ! $this->isEmpty();
	}


	/**
	 * Render the attribute.
	 */
	public function render(): string
	{
		if ($this->isEmpty()) {
		    return '';
		}

		return $this->name . '="' . e($this->value(), false) . '"';
	}


	/**
	 * Parse the given value.
	 */
	private static function parseClasses(mixed $classes): array
	{
		if ($classes instanceof Arrayable) {
		    $classes = $classes->toArray();
		}

		if (is_string($classes)) {
		    $classes = explode(' ', $classes);
		}

		if (\Illuminate\Support\Arr::isAssoc($classes)) {
		    $classes = \Illuminate\Support\Collection::make($classes)
		        ->transform(fn($value, $key) => is_numeric($key) ? $value : ($value ? $key : false))
		        ->filter()
		        ->values()
		        ->toArray();
		}

		return array_unique($classes);
	}
}
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