<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\ValidationRule;

class Hex implements ValidationRule
{
    /**
     * @var boolean
     */
    protected $forceFull;

    /**
     * @var boolean
     */
    protected $allowAlpha;

    /**
     * __construct method
     *
     * @param boolean $forceFull
     * @param boolean $allowAlpha
     *
     * @return void
     */
    public function __construct(bool $forceFull = false, bool $allowAlpha = false)
    {
        $this->forceFull = $forceFull;

        $this->allowAlpha = $allowAlpha;
    }

    /**
     * Run the validation rule.
     *
     * @param string                                                               $attribute
     * @param mixed                                                                $value
     * @param \Closure(string):\Illuminate\Translation\PotentiallyTranslatedString $fail
     * @return void
     * @phpcs:disable Generic.CodeAnalysis.UnusedFunctionParameter.FoundInImplementedInterfaceBeforeLastUsed
     * @phpcs:disable Squiz.Commenting.FunctionComment.IncorrectTypeHint
     */
    public function validate(string $attribute, mixed $value, \Closure $fail): void
    {
        $pattern = '/^#([a-fA-F0-9]{6}';

        if (!$this->forceFull) {
            $pattern .= '|[a-fA-F0-9]{3}';
        }

        if ($this->allowAlpha) {
            $pattern .= '|[a-fA-F0-9]{8}';

            if (!$this->forceFull) {
                $pattern .= '|[a-fA-F0-9]{4}';
            }
        }

        $pattern .= ')$/';

        if (!(bool)preg_match($pattern, $value)) {
            $fail(trans($this->message()));
        }
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message(): string
    {
        return 'The hex code is not valid';
    }
}