<?php
namespace Uiharu\Lookup;

use RuntimeException;
use Uiharu\FFMPEG;
use Uiharu\MediaTypeExts;
use Uiharu\Url;
use Index\MediaType;

final class EEPROMLookup implements \Uiharu\ILookup {
    public function __construct(
        private string $protocol,
        private string $apiDomain,
        private array $shortDomains
    ) {}

    public function match(Url $url): bool {
        return $url->getScheme() === $this->protocol || (
            $url->isWeb() && (
                in_array($url->getHost(), $this->shortDomains) || (
                    $url->getHost() === $this->apiDomain && str_starts_with($url->getPath(), '/uploads')
                )
            )
        );
    }

    private function rawLookup(string $fileId): ?object {
        $curl = curl_init("https://{$this->apiDomain}/uploads/{$fileId}.json");
        curl_setopt_array($curl, [
            CURLOPT_AUTOREFERER => false,
            CURLOPT_CERTINFO => false,
            CURLOPT_FAILONERROR => false,
            CURLOPT_FOLLOWLOCATION => false,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TCP_FASTOPEN => true,
            CURLOPT_CONNECTTIMEOUT => 2,
            CURLOPT_PROTOCOLS => CURLPROTO_HTTPS,
            CURLOPT_TIMEOUT => 5,
            CURLOPT_USERAGENT => 'Uiharu/' . UIH_VERSION,
            CURLOPT_HTTPHEADER => [
                'Accept: application/json',
            ],
        ]);
        $resp = curl_exec($curl);
        curl_close($curl);
        return json_decode($resp);
    }

    public function lookup(Url $url): EEPROMLookupResult {
        if($url->getScheme() === $this->protocol) {
            $fileId = $url->getPath();
        } elseif($url->isWeb()) {
            if($url->getHost() === $this->apiDomain) {
                if(preg_match('#^/uploads/([A-Za-z0-9-_]+)/?$#', $url->getPath(), $matches))
                    $fileId = $matches[1];
            } else {
                $fileId = substr($url->getPath(), 1);
            }
        }

        if(!isset($fileId))
            throw new RuntimeException('Was unable to find EEPROM file id.');
        if(!preg_match('#^([A-Za-z0-9-_]+)$#', $fileId))
            throw new RuntimeException('Invalid EEPROM file id format.');

        $fileInfo = $this->rawLookup($fileId);
        if($fileInfo === null)
            throw new RuntimeException('EEPROM file does not exist: ' . $fileId);

        $url = Url::parse('https://' . $this->shortDomains[0] . '/' . $fileId);
        $mediaType = MediaType::parse($fileInfo->type);
        $isMedia = MediaTypeExts::isMedia($mediaType);
        $mediaInfo = $isMedia ? FFMPEG::cleanProbe($url) : null;

        return new EEPROMLookupResult($url, $mediaType, $fileInfo, $mediaInfo);
    }
}