<?php

namespace AsyncAws\S3\Result;

use AsyncAws\Core\Response;
use AsyncAws\Core\Result;
use AsyncAws\S3\Enum\ArchiveStatus;
use AsyncAws\S3\Enum\ObjectLockLegalHoldStatus;
use AsyncAws\S3\Enum\ObjectLockMode;
use AsyncAws\S3\Enum\ReplicationStatus;
use AsyncAws\S3\Enum\RequestCharged;
use AsyncAws\S3\Enum\ServerSideEncryption;
use AsyncAws\S3\Enum\StorageClass;

class HeadObjectOutput extends Result
{
    /**
     * Specifies whether the object retrieved was (true) or was not (false) a Delete Marker. If false, this response header
     * does not appear in the response.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var bool|null
     */
    private $deleteMarker;

    /**
     * Indicates that a range of bytes was specified.
     *
     * @var string|null
     */
    private $acceptRanges;

    /**
     * If the object expiration is configured (see `PutBucketLifecycleConfiguration` [^1]), the response includes this
     * header. It includes the `expiry-date` and `rule-id` key-value pairs providing object expiration information. The
     * value of the `rule-id` is URL-encoded.
     *
     * > This functionality is not supported for directory buckets.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycleConfiguration.html
     *
     * @var string|null
     */
    private $expiration;

    /**
     * If the object is an archived object (an object whose storage class is GLACIER), the response includes this header if
     * either the archive restoration is in progress (see RestoreObject [^1] or an archive copy is already restored.
     *
     * If an archive copy is already restored, the header value indicates when Amazon S3 is scheduled to delete the object
     * copy. For example:
     *
     * `x-amz-restore: ongoing-request="false", expiry-date="Fri, 21 Dec 2012 00:00:00 GMT"`
     *
     * If the object restoration is in progress, the header returns the value `ongoing-request="true"`.
     *
     * For more information about archiving objects, see Transitioning Objects: General Considerations [^2].
     *
     * > This functionality is not supported for directory buckets. Only the S3 Express One Zone storage class is supported
     * > by directory buckets to store objects.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/API/API_RestoreObject.html
     * [^2]: https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html#lifecycle-transition-general-considerations
     *
     * @var string|null
     */
    private $restore;

    /**
     * The archive state of the head object.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var ArchiveStatus::*|null
     */
    private $archiveStatus;

    /**
     * Date and time when the object was last modified.
     *
     * @var \DateTimeImmutable|null
     */
    private $lastModified;

    /**
     * Size of the body in bytes.
     *
     * @var int|null
     */
    private $contentLength;

    /**
     * The base64-encoded, 32-bit CRC32 checksum of the object. This will only be present if it was uploaded with the
     * object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a
     * direct checksum value of the full object. Instead, it's a calculation based on the checksum values of each individual
     * part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity
     * [^1] in the *Amazon S3 User Guide*.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#large-object-checksums
     *
     * @var string|null
     */
    private $checksumCrc32;

    /**
     * The base64-encoded, 32-bit CRC32C checksum of the object. This will only be present if it was uploaded with the
     * object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a
     * direct checksum value of the full object. Instead, it's a calculation based on the checksum values of each individual
     * part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity
     * [^1] in the *Amazon S3 User Guide*.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#large-object-checksums
     *
     * @var string|null
     */
    private $checksumCrc32C;

    /**
     * The base64-encoded, 160-bit SHA-1 digest of the object. This will only be present if it was uploaded with the object.
     * When you use the API operation on an object that was uploaded using multipart uploads, this value may not be a direct
     * checksum value of the full object. Instead, it's a calculation based on the checksum values of each individual part.
     * For more information about how checksums are calculated with multipart uploads, see Checking object integrity [^1] in
     * the *Amazon S3 User Guide*.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#large-object-checksums
     *
     * @var string|null
     */
    private $checksumSha1;

    /**
     * The base64-encoded, 256-bit SHA-256 digest of the object. This will only be present if it was uploaded with the
     * object. When you use an API operation on an object that was uploaded using multipart uploads, this value may not be a
     * direct checksum value of the full object. Instead, it's a calculation based on the checksum values of each individual
     * part. For more information about how checksums are calculated with multipart uploads, see Checking object integrity
     * [^1] in the *Amazon S3 User Guide*.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#large-object-checksums
     *
     * @var string|null
     */
    private $checksumSha256;

    /**
     * An entity tag (ETag) is an opaque identifier assigned by a web server to a specific version of a resource found at a
     * URL.
     *
     * @var string|null
     */
    private $etag;

    /**
     * This is set to the number of metadata entries not returned in `x-amz-meta` headers. This can happen if you create
     * metadata using an API like SOAP that supports more flexible metadata than the REST API. For example, using SOAP, you
     * can create metadata whose values are not legal HTTP headers.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var int|null
     */
    private $missingMeta;

    /**
     * Version ID of the object.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var string|null
     */
    private $versionId;

    /**
     * Specifies caching behavior along the request/reply chain.
     *
     * @var string|null
     */
    private $cacheControl;

    /**
     * Specifies presentational information for the object.
     *
     * @var string|null
     */
    private $contentDisposition;

    /**
     * Indicates what content encodings have been applied to the object and thus what decoding mechanisms must be applied to
     * obtain the media-type referenced by the Content-Type header field.
     *
     * @var string|null
     */
    private $contentEncoding;

    /**
     * The language the content is in.
     *
     * @var string|null
     */
    private $contentLanguage;

    /**
     * A standard MIME type describing the format of the object data.
     *
     * @var string|null
     */
    private $contentType;

    /**
     * The date and time at which the object is no longer cacheable.
     *
     * @var \DateTimeImmutable|null
     */
    private $expires;

    /**
     * If the bucket is configured as a website, redirects requests for this object to another object in the same bucket or
     * to an external URL. Amazon S3 stores the value of this header in the object metadata.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var string|null
     */
    private $websiteRedirectLocation;

    /**
     * The server-side encryption algorithm used when you store this object in Amazon S3 (for example, `AES256`, `aws:kms`,
     * `aws:kms:dsse`).
     *
     * > For directory buckets, only server-side encryption with Amazon S3 managed keys (SSE-S3) (`AES256`) is supported.
     *
     * @var ServerSideEncryption::*|null
     */
    private $serverSideEncryption;

    /**
     * A map of metadata to store with the object in S3.
     *
     * @var array<string, string>
     */
    private $metadata;

    /**
     * If server-side encryption with a customer-provided encryption key was requested, the response will include this
     * header to confirm the encryption algorithm that's used.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var string|null
     */
    private $sseCustomerAlgorithm;

    /**
     * If server-side encryption with a customer-provided encryption key was requested, the response will include this
     * header to provide the round-trip message integrity verification of the customer-provided encryption key.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var string|null
     */
    private $sseCustomerKeyMd5;

    /**
     * If present, indicates the ID of the Key Management Service (KMS) symmetric encryption customer managed key that was
     * used for the object.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var string|null
     */
    private $sseKmsKeyId;

    /**
     * Indicates whether the object uses an S3 Bucket Key for server-side encryption with Key Management Service (KMS) keys
     * (SSE-KMS).
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var bool|null
     */
    private $bucketKeyEnabled;

    /**
     * Provides storage class information of the object. Amazon S3 returns this header for all objects except for S3
     * Standard storage class objects.
     *
     * For more information, see Storage Classes [^1].
     *
     * > **Directory buckets ** - Only the S3 Express One Zone storage class is supported by directory buckets to store
     * > objects.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/dev/storage-class-intro.html
     *
     * @var StorageClass::*|null
     */
    private $storageClass;

    /**
     * @var RequestCharged::*|null
     */
    private $requestCharged;

    /**
     * Amazon S3 can return this header if your request involves a bucket that is either a source or a destination in a
     * replication rule.
     *
     * In replication, you have a source bucket on which you configure replication and destination bucket or buckets where
     * Amazon S3 stores object replicas. When you request an object (`GetObject`) or object metadata (`HeadObject`) from
     * these buckets, Amazon S3 will return the `x-amz-replication-status` header in the response as follows:
     *
     * - **If requesting an object from the source bucket**, Amazon S3 will return the `x-amz-replication-status` header if
     *   the object in your request is eligible for replication.
     *
     *   For example, suppose that in your replication configuration, you specify object prefix `TaxDocs` requesting Amazon
     *   S3 to replicate objects with key prefix `TaxDocs`. Any objects you upload with this key name prefix, for example
     *   `TaxDocs/document1.pdf`, are eligible for replication. For any object request with this key name prefix, Amazon S3
     *   will return the `x-amz-replication-status` header with value PENDING, COMPLETED or FAILED indicating object
     *   replication status.
     * - **If requesting an object from a destination bucket**, Amazon S3 will return the `x-amz-replication-status` header
     *   with value REPLICA if the object in your request is a replica that Amazon S3 created and there is no replica
     *   modification replication in progress.
     * - **When replicating objects to multiple destination buckets**, the `x-amz-replication-status` header acts
     *   differently. The header of the source object will only return a value of COMPLETED when replication is successful
     *   to all destinations. The header will remain at value PENDING until replication has completed for all destinations.
     *   If one or more destinations fails replication the header will return FAILED.
     *
     * For more information, see Replication [^1].
     *
     * > This functionality is not supported for directory buckets.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html
     *
     * @var ReplicationStatus::*|null
     */
    private $replicationStatus;

    /**
     * The count of parts this object has. This value is only returned if you specify `partNumber` in your request and the
     * object was uploaded as a multipart upload.
     *
     * @var int|null
     */
    private $partsCount;

    /**
     * The Object Lock mode, if any, that's in effect for this object. This header is only returned if the requester has the
     * `s3:GetObjectRetention` permission. For more information about S3 Object Lock, see Object Lock [^1].
     *
     * > This functionality is not supported for directory buckets.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock.html
     *
     * @var ObjectLockMode::*|null
     */
    private $objectLockMode;

    /**
     * The date and time when the Object Lock retention period expires. This header is only returned if the requester has
     * the `s3:GetObjectRetention` permission.
     *
     * > This functionality is not supported for directory buckets.
     *
     * @var \DateTimeImmutable|null
     */
    private $objectLockRetainUntilDate;

    /**
     * Specifies whether a legal hold is in effect for this object. This header is only returned if the requester has the
     * `s3:GetObjectLegalHold` permission. This header is not returned if the specified version of this object has never had
     * a legal hold applied. For more information about S3 Object Lock, see Object Lock [^1].
     *
     * > This functionality is not supported for directory buckets.
     *
     * [^1]: https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lock.html
     *
     * @var ObjectLockLegalHoldStatus::*|null
     */
    private $objectLockLegalHoldStatus;

    public function getAcceptRanges(): ?string
    {
        $this->initialize();

        return $this->acceptRanges;
    }

    /**
     * @return ArchiveStatus::*|null
     */
    public function getArchiveStatus(): ?string
    {
        $this->initialize();

        return $this->archiveStatus;
    }

    public function getBucketKeyEnabled(): ?bool
    {
        $this->initialize();

        return $this->bucketKeyEnabled;
    }

    public function getCacheControl(): ?string
    {
        $this->initialize();

        return $this->cacheControl;
    }

    public function getChecksumCrc32(): ?string
    {
        $this->initialize();

        return $this->checksumCrc32;
    }

    public function getChecksumCrc32C(): ?string
    {
        $this->initialize();

        return $this->checksumCrc32C;
    }

    public function getChecksumSha1(): ?string
    {
        $this->initialize();

        return $this->checksumSha1;
    }

    public function getChecksumSha256(): ?string
    {
        $this->initialize();

        return $this->checksumSha256;
    }

    public function getContentDisposition(): ?string
    {
        $this->initialize();

        return $this->contentDisposition;
    }

    public function getContentEncoding(): ?string
    {
        $this->initialize();

        return $this->contentEncoding;
    }

    public function getContentLanguage(): ?string
    {
        $this->initialize();

        return $this->contentLanguage;
    }

    public function getContentLength(): ?int
    {
        $this->initialize();

        return $this->contentLength;
    }

    public function getContentType(): ?string
    {
        $this->initialize();

        return $this->contentType;
    }

    public function getDeleteMarker(): ?bool
    {
        $this->initialize();

        return $this->deleteMarker;
    }

    public function getEtag(): ?string
    {
        $this->initialize();

        return $this->etag;
    }

    public function getExpiration(): ?string
    {
        $this->initialize();

        return $this->expiration;
    }

    public function getExpires(): ?\DateTimeImmutable
    {
        $this->initialize();

        return $this->expires;
    }

    public function getLastModified(): ?\DateTimeImmutable
    {
        $this->initialize();

        return $this->lastModified;
    }

    /**
     * @return array<string, string>
     */
    public function getMetadata(): array
    {
        $this->initialize();

        return $this->metadata;
    }

    public function getMissingMeta(): ?int
    {
        $this->initialize();

        return $this->missingMeta;
    }

    /**
     * @return ObjectLockLegalHoldStatus::*|null
     */
    public function getObjectLockLegalHoldStatus(): ?string
    {
        $this->initialize();

        return $this->objectLockLegalHoldStatus;
    }

    /**
     * @return ObjectLockMode::*|null
     */
    public function getObjectLockMode(): ?string
    {
        $this->initialize();

        return $this->objectLockMode;
    }

    public function getObjectLockRetainUntilDate(): ?\DateTimeImmutable
    {
        $this->initialize();

        return $this->objectLockRetainUntilDate;
    }

    public function getPartsCount(): ?int
    {
        $this->initialize();

        return $this->partsCount;
    }

    /**
     * @return ReplicationStatus::*|null
     */
    public function getReplicationStatus(): ?string
    {
        $this->initialize();

        return $this->replicationStatus;
    }

    /**
     * @return RequestCharged::*|null
     */
    public function getRequestCharged(): ?string
    {
        $this->initialize();

        return $this->requestCharged;
    }

    public function getRestore(): ?string
    {
        $this->initialize();

        return $this->restore;
    }

    /**
     * @return ServerSideEncryption::*|null
     */
    public function getServerSideEncryption(): ?string
    {
        $this->initialize();

        return $this->serverSideEncryption;
    }

    public function getSseCustomerAlgorithm(): ?string
    {
        $this->initialize();

        return $this->sseCustomerAlgorithm;
    }

    public function getSseCustomerKeyMd5(): ?string
    {
        $this->initialize();

        return $this->sseCustomerKeyMd5;
    }

    public function getSseKmsKeyId(): ?string
    {
        $this->initialize();

        return $this->sseKmsKeyId;
    }

    /**
     * @return StorageClass::*|null
     */
    public function getStorageClass(): ?string
    {
        $this->initialize();

        return $this->storageClass;
    }

    public function getVersionId(): ?string
    {
        $this->initialize();

        return $this->versionId;
    }

    public function getWebsiteRedirectLocation(): ?string
    {
        $this->initialize();

        return $this->websiteRedirectLocation;
    }

    protected function populateResult(Response $response): void
    {
        $headers = $response->getHeaders();

        $this->deleteMarker = isset($headers['x-amz-delete-marker'][0]) ? filter_var($headers['x-amz-delete-marker'][0], \FILTER_VALIDATE_BOOLEAN) : null;
        $this->acceptRanges = $headers['accept-ranges'][0] ?? null;
        $this->expiration = $headers['x-amz-expiration'][0] ?? null;
        $this->restore = $headers['x-amz-restore'][0] ?? null;
        $this->archiveStatus = $headers['x-amz-archive-status'][0] ?? null;
        $this->lastModified = isset($headers['last-modified'][0]) ? new \DateTimeImmutable($headers['last-modified'][0]) : null;
        $this->contentLength = isset($headers['content-length'][0]) ? (int) $headers['content-length'][0] : null;
        $this->checksumCrc32 = $headers['x-amz-checksum-crc32'][0] ?? null;
        $this->checksumCrc32C = $headers['x-amz-checksum-crc32c'][0] ?? null;
        $this->checksumSha1 = $headers['x-amz-checksum-sha1'][0] ?? null;
        $this->checksumSha256 = $headers['x-amz-checksum-sha256'][0] ?? null;
        $this->etag = $headers['etag'][0] ?? null;
        $this->missingMeta = isset($headers['x-amz-missing-meta'][0]) ? (int) $headers['x-amz-missing-meta'][0] : null;
        $this->versionId = $headers['x-amz-version-id'][0] ?? null;
        $this->cacheControl = $headers['cache-control'][0] ?? null;
        $this->contentDisposition = $headers['content-disposition'][0] ?? null;
        $this->contentEncoding = $headers['content-encoding'][0] ?? null;
        $this->contentLanguage = $headers['content-language'][0] ?? null;
        $this->contentType = $headers['content-type'][0] ?? null;
        $this->expires = isset($headers['expires'][0]) ? new \DateTimeImmutable($headers['expires'][0]) : null;
        $this->websiteRedirectLocation = $headers['x-amz-website-redirect-location'][0] ?? null;
        $this->serverSideEncryption = $headers['x-amz-server-side-encryption'][0] ?? null;
        $this->sseCustomerAlgorithm = $headers['x-amz-server-side-encryption-customer-algorithm'][0] ?? null;
        $this->sseCustomerKeyMd5 = $headers['x-amz-server-side-encryption-customer-key-md5'][0] ?? null;
        $this->sseKmsKeyId = $headers['x-amz-server-side-encryption-aws-kms-key-id'][0] ?? null;
        $this->bucketKeyEnabled = isset($headers['x-amz-server-side-encryption-bucket-key-enabled'][0]) ? filter_var($headers['x-amz-server-side-encryption-bucket-key-enabled'][0], \FILTER_VALIDATE_BOOLEAN) : null;
        $this->storageClass = $headers['x-amz-storage-class'][0] ?? null;
        $this->requestCharged = $headers['x-amz-request-charged'][0] ?? null;
        $this->replicationStatus = $headers['x-amz-replication-status'][0] ?? null;
        $this->partsCount = isset($headers['x-amz-mp-parts-count'][0]) ? (int) $headers['x-amz-mp-parts-count'][0] : null;
        $this->objectLockMode = $headers['x-amz-object-lock-mode'][0] ?? null;
        $this->objectLockRetainUntilDate = isset($headers['x-amz-object-lock-retain-until-date'][0]) ? new \DateTimeImmutable($headers['x-amz-object-lock-retain-until-date'][0]) : null;
        $this->objectLockLegalHoldStatus = $headers['x-amz-object-lock-legal-hold'][0] ?? null;

        $this->metadata = [];
        foreach ($headers as $name => $value) {
            if ('x-amz-meta-' === substr($name, 0, 11)) {
                $this->metadata[substr($name, 11)] = $value[0];
            }
        }
    }
}
