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<?php

namespace Spatie\LaravelData\Support;

use Spatie\LaravelData\Contracts\BaseData;

class DataClassMorphMap
{
    /** @var array<string, class-string<BaseData>> */
    protected array $map = [];

/** @var array< class-string<BaseData>, string> */
    protected array $reversedMap = [];

/**
     * @param string $alias
     * @param class-string<BaseData> $class
     */
    public function add(
        string $alias,
        string $class
    ): self {
        $this->map[$alias] = $class;
        $this->reversedMap[$class] = $alias;

return $this;
    }

/**
     * @param array<string, class-string<BaseData>> $map
     */
    public function merge(array $map): self
    {
        foreach ($map as $alias => $class) {
            $this->add($alias, $class);
        }

return $this;
    }

/**
     * @return class-string<BaseData>|null
     */
    public function getMorphedDataClass(string $alias): ?string
    {
        return $this->map[$alias] ?? null;
    }

/**
     * @param class-string<BaseData> $class
     */
    public function getDataClassAlias(string $class): ?string
    {
        return $this->reversedMap[$class] ?? null;
    }
}