<?php

/*
 * This file is part of the NelmioApiDocBundle package.
 *
 * (c) Nelmio
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Nelmio\ApiDocBundle\ModelDescriber\Annotations;

use Doctrine\Common\Annotations\Reader;
use Nelmio\ApiDocBundle\Model\ModelRegistry;
use Nelmio\ApiDocBundle\OpenApiPhp\ModelRegister;
use Nelmio\ApiDocBundle\OpenApiPhp\Util;
use Nelmio\ApiDocBundle\Util\SetsContextTrait;
use OpenApi\Analysis;
use OpenApi\Annotations as OA;
use OpenApi\Context;
use OpenApi\Generator;

/**
 * @internal
 */
class OpenApiAnnotationsReader
{
    use SetsContextTrait;

    /**
     * @var Reader|null
     */
    private $annotationsReader;
    private $modelRegister;

    public function __construct(?Reader $annotationsReader, ModelRegistry $modelRegistry, array $mediaTypes)
    {
        $this->annotationsReader = $annotationsReader;
        $this->modelRegister = new ModelRegister($modelRegistry, $mediaTypes);
    }

    public function updateSchema(\ReflectionClass $reflectionClass, OA\Schema $schema): void
    {
        /** @var OA\Schema|null $oaSchema */
        if (!$oaSchema = $this->getAnnotation($schema->_context, $reflectionClass, OA\Schema::class)) {
            return;
        }

        // Read @Model annotations
        $this->modelRegister->__invoke(new Analysis([$oaSchema], Util::createContext()));

        if (!$oaSchema->validate()) {
            return;
        }

        $schema->mergeProperties($oaSchema);
    }

    public function getPropertyName($reflection, string $default): string
    {
        /** @var OA\Property|null $oaProperty */
        if (!$oaProperty = $this->getAnnotation(new Context(), $reflection, OA\Property::class)) {
            return $default;
        }

        return Generator::UNDEFINED !== $oaProperty->property ? $oaProperty->property : $default;
    }

    public function updateProperty($reflection, OA\Property $property, array $serializationGroups = null): void
    {
        /** @var OA\Property|null $oaProperty */
        if (!$oaProperty = $this->getAnnotation($property->_context, $reflection, OA\Property::class)) {
            return;
        }

        // Read @Model annotations
        $this->modelRegister->__invoke(new Analysis([$oaProperty], Util::createContext()), $serializationGroups);

        if (!$oaProperty->validate()) {
            return;
        }

        $property->mergeProperties($oaProperty);
    }

    /**
     * @param \ReflectionClass|\ReflectionProperty|\ReflectionMethod $reflection
     *
     * @return mixed
     */
    private function getAnnotation(Context $parentContext, $reflection, string $className)
    {
        $this->setContextFromReflection($parentContext, $reflection);

        try {
            if (\PHP_VERSION_ID >= 80100) {
                if (null !== $attribute = $reflection->getAttributes($className, \ReflectionAttribute::IS_INSTANCEOF)[0] ?? null) {
                    return $attribute->newInstance();
                }
            }

            if (null !== $this->annotationsReader) {
                if ($reflection instanceof \ReflectionClass) {
                    return $this->annotationsReader->getClassAnnotation($reflection, $className);
                } elseif ($reflection instanceof \ReflectionProperty) {
                    return $this->annotationsReader->getPropertyAnnotation($reflection, $className);
                } elseif ($reflection instanceof \ReflectionMethod) {
                    return $this->annotationsReader->getMethodAnnotation($reflection, $className);
                }
            }
        } finally {
            $this->setContext(null);
        }

        return null;
    }
}