<?php

namespace Kazcode\WpStorage\Vendor\Aws\S3;

use Kazcode\WpStorage\Vendor\Aws\CommandInterface;
use Kazcode\WpStorage\Vendor\Aws\Multipart\UploadState;
use Kazcode\WpStorage\Vendor\Aws\ResultInterface;
trait MultipartUploadingTrait
{
    private $uploadedBytes = 0;
    /**
     * Creates an UploadState object for a multipart upload by querying the
     * service for the specified upload's information.
     *
     * @param S3ClientInterface $client   S3Client used for the upload.
     * @param string            $bucket   Bucket for the multipart upload.
     * @param string            $key      Object key for the multipart upload.
     * @param string            $uploadId Upload ID for the multipart upload.
     * @param array             $config   Optional config to retain on the
     *                                    state. Pass the directive keys
     *                                    (`metadata_directive`,
     *                                    `tags_directive`,
     *                                    `annotations_directive`) the
     *                                    original copy was launched with so
     *                                    a resumed `MultipartCopy` replays
     *                                    Phase 3 with the same behavior. The
     *                                    caller can also override directives
     *                                    on the resume by passing them again
     *                                    to the `MultipartCopy` constructor.
     *
     * @return UploadState
     */
    public static function getStateFromService(S3ClientInterface $client, $bucket, $key, $uploadId, array $config = [])
    {
        $state = new UploadState(['Bucket' => $bucket, 'Key' => $key, 'UploadId' => $uploadId], $config);
        foreach ($client->getPaginator('ListParts', $state->getId()) as $result) {
            // Get the part size from the first part in the first result.
            if (!$state->getPartSize()) {
                $state->setPartSize($result->search('Parts[0].Size'));
            }
            // Mark all the parts returned by ListParts as uploaded.
            foreach ($result['Parts'] as $part) {
                $state->markPartAsUploaded($part['PartNumber'], ['PartNumber' => $part['PartNumber'], 'ETag' => $part['ETag']]);
            }
        }
        $state->setStatus(UploadState::INITIATED);
        return $state;
    }
    protected function handleResult(CommandInterface $command, ResultInterface $result)
    {
        $partData = [];
        $partData['PartNumber'] = $command['PartNumber'];
        $partData['ETag'] = $this->extractETag($result);
        $commandName = $command->getName();
        $checksumResult = $commandName === 'UploadPart' ? $result : $result[$commandName . 'Result'];
        if (isset($command['ChecksumAlgorithm'])) {
            $checksumMemberName = 'Checksum' . strtoupper($command['ChecksumAlgorithm']);
            $partData[$checksumMemberName] = $checksumResult[$checksumMemberName] ?? null;
        }
        $this->getState()->markPartAsUploaded($command['PartNumber'], $partData);
        // Updates counter for uploaded bytes.
        $this->uploadedBytes += $command["ContentLength"];
        // Sends uploaded bytes to progress tracker if getDisplayProgress set
        if ($this->displayProgress) {
            $this->getState()->getDisplayProgress($this->uploadedBytes);
        }
    }
    abstract protected function extractETag(ResultInterface $result);
    protected function getCompleteParams()
    {
        $config = $this->getConfig();
        $params = isset($config['params']) ? $config['params'] : [];
        $params['MultipartUpload'] = ['Parts' => $this->getState()->getUploadedParts()];
        return $params;
    }
    protected function determinePartSize()
    {
        // Make sure the part size is set.
        $partSize = $this->getConfig()['part_size'] ?: MultipartUploader::PART_MIN_SIZE;
        // Adjust the part size to be larger for known, x-large uploads.
        if ($sourceSize = $this->getSourceSize()) {
            $partSize = (int) max($partSize, ceil($sourceSize / MultipartUploader::PART_MAX_NUM));
        }
        // Ensure that the part size follows the rules: 5 MB <= size <= 5 GB.
        if ($partSize < MultipartUploader::PART_MIN_SIZE || $partSize > MultipartUploader::PART_MAX_SIZE) {
            throw new \InvalidArgumentException('The part size must be no less ' . 'than 5 MB and no greater than 5 GB.');
        }
        return $partSize;
    }
    protected function getInitiateParams()
    {
        $config = $this->getConfig();
        $params = isset($config['params']) ? $config['params'] : [];
        if (isset($config['acl'])) {
            $params['ACL'] = $config['acl'];
        }
        // Set the ContentType if not already present
        if (empty($params['ContentType']) && $type = $this->getSourceMimeType()) {
            $params['ContentType'] = $type;
        }
        return $params;
    }
    /**
     * @return UploadState
     */
    abstract protected function getState();
    /**
     * @return array
     */
    abstract protected function getConfig();
    /**
     * @return int
     */
    abstract protected function getSourceSize();
    /**
     * @return string|null
     */
    abstract protected function getSourceMimeType();
    /**
     * Parses an S3 Tagging query-string (`k=v&k2=v2`) into a TagSet array
     * (`[['Key' => k, 'Value' => v], ...]`).
     *
     * Shared between MultipartUpload (where callers may pass a Tagging string
     * via params) and MultipartCopy's tags_directive=REPLACE path.
     *
     * @param string $tagging
     * @return array
     */
    protected static function parseTaggingQueryString(string $tagging): array
    {
        $tagSet = [];
        foreach (explode('&', $tagging) as $pair) {
            if ($pair === '') {
                continue;
            }
            $parts = explode('=', $pair, 2);
            $tagSet[] = ['Key' => urldecode($parts[0]), 'Value' => urldecode($parts[1] ?? '')];
        }
        return $tagSet;
    }
}
