Added ニコニコ動画 metadata support.

public/index.php

@@ -12,6 +12,7 @@ if(UIH_DEBUG)
 
 $ctx->registerLookup(new \Uiharu\Lookup\TwitterLookup);
 $ctx->registerLookup(new \Uiharu\Lookup\YouTubeLookup);
+$ctx->registerLookup(new \Uiharu\Lookup\NicoNicoLookup);
 
 // this should always come AFTER other lookups involved http(s)
 $ctx->registerLookup(new \Uiharu\Lookup\WebLookup);

src/Apis/v1_0.php

@@ -17,6 +17,7 @@ use Uiharu\Lookup\TwitterLookupResult;
 use Uiharu\Lookup\TwitterLookupTweetResult;
 use Uiharu\Lookup\TwitterLookupUserResult;
 use Uiharu\Lookup\YouTubeLookupResult;
+use Uiharu\Lookup\NicoNicoLookupResult;
 use Index\MediaType;
 use Index\Data\IDbConnection;
 use Index\Http\HttpFx;
@@ -154,6 +155,14 @@ final class v1_0 implements \Uiharu\IApi {
                         }
                     }
 
+                    if($result instanceof NicoNicoLookupResult) {
+                        $resp->nicovideo_video_id = $result->getNicoNicoVideoId();
+
+                        if(UIH_DEBUG) {
+                            $resp->dbg_nicovideo_thumb_info = $result->getNicoNicoThumbInfo()->ownerDocument->saveXML();
+                        }
+                    }
+
                     if($result instanceof IHasMediaInfo) {
                         if($result->isMedia()) {
                             $resp->is_image = $result->isImage();

src/Lookup/NicoNicoLookup.php

@@ -0,0 +1,63 @@
+<?php
+namespace Uiharu\Lookup;
+
+use DOMDocument;
+use RuntimeException;
+use Uiharu\Url;
+
+final class NicoNicoLookup implements \Uiharu\ILookup {
+    public function match(Url $url): bool {
+        if(!$url->isWeb() || ($url->getHost() !== 'www.nicovideo.jp' && $url->getHost() !== 'nicovideo.jp'))
+            return false;
+
+        if(str_starts_with($url->getPath(), '/watch/sm'))
+            return true;
+
+        return false;
+    }
+
+    public function lookup(Url $url): NicoNicoLookupResult {
+        $videoId = explode('/', trim($url->getPath(), '/'))[1] ?? '';
+        if(empty($videoId))
+            throw new RuntimeException('Nico Nico Douga video id missing.');
+
+        $thumbDoc = self::lookupThumbInfo($videoId);
+
+        $thumbResp = $thumbDoc->getElementsByTagName('nicovideo_thumb_response')[0] ?? null;
+        if(empty($thumbResp) || !$thumbResp->hasAttribute('status') || $thumbResp->getAttribute('status') !== 'ok')
+            throw new RuntimeException('Nico Nico Douga video with the given id could not be found.');
+
+        $thumbInfo = $thumbResp->getElementsByTagName('thumb')[0] ?? null;
+        if(empty($thumbInfo))
+            throw new RuntimeException('Nico Nico Douga thumb info missing from API result????');
+
+        return new NicoNicoLookupResult($url, $videoId, $thumbInfo);
+    }
+
+    private static function lookupThumbInfo(string $videoId): DOMDocument {
+        $curl = curl_init("https://ext.nicovideo.jp/api/getthumbinfo/{$videoId}");
+        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,
+        ]);
+        $resp = curl_exec($curl);
+        curl_close($curl);
+
+        if(empty($resp))
+            throw new RuntimeException('Nico Nico Douga API request failed.');
+
+        $doc = new DOMDocument;
+        if(!$doc->loadXML($resp))
+            throw new RuntimeException('Failed to parse Nico Nico Douga API response.');
+
+        return $doc;
+    }
+}

src/Lookup/NicoNicoLookupResult.php

@@ -0,0 +1,80 @@
+<?php
+namespace Uiharu\Lookup;
+
+use DOMElement;
+use Index\MediaType;
+use Uiharu\Url;
+
+final class NicoNicoLookupResult implements \Uiharu\ILookupResult {
+    private DOMElement|false|null $title = null;
+    private DOMElement|false|null $description = null;
+    private DOMElement|false|null $previewImage = null;
+
+    public function __construct(
+        private Url $url,
+        private string $videoId,
+        private DOMElement $thumbInfo,
+    ) {}
+
+    public function getUrl(): Url {
+        return $this->url;
+    }
+    public function getObjectType(): string {
+        return 'niconico:video';
+    }
+
+    public function getNicoNicoVideoId(): string {
+        return $this->videoId;
+    }
+    public function getNicoNicoThumbInfo(): DOMElement {
+        return $this->thumbInfo;
+    }
+
+    public function hasMediaType(): bool {
+        return false;
+    }
+    public function getMediaType(): MediaType {
+        throw new RuntimeException('Unsupported');
+    }
+
+    public function hasColour(): bool {
+        return true;
+    }
+    public function getColour(): int {
+        return 0x252525;
+    }
+
+    public function hasTitle(): bool {
+        if($this->title === null)
+            $this->title = $this->thumbInfo->getElementsByTagName('title')[0] ?? false;
+        return $this->title !== false;
+    }
+    public function getTitle(): string {
+        return $this->hasTitle() ? trim($this->title->textContent) : 'No Title';
+    }
+
+    public function hasSiteName(): bool {
+        return true;
+    }
+    public function getSiteName(): string {
+        return 'ニコニコ動画';
+    }
+
+    public function hasDescription(): bool {
+        if($this->description === null)
+            $this->description = $this->thumbInfo->getElementsByTagName('description')[0] ?? false;
+        return $this->description !== false && !empty($this->description->textContent);
+    }
+    public function getDescription(): string {
+        return $this->hasDescription() ? trim($this->description->textContent) : '';
+    }
+
+    public function hasPreviewImage(): bool {
+        if($this->previewImage === null)
+            $this->previewImage = $this->thumbInfo->getElementsByTagName('thumbnail_url')[0] ?? false;
+        return $this->previewImage !== false && !empty($this->previewImage->textContent);
+    }
+    public function getPreviewImage(): string {
+        return $this->hasPreviewImage() ? (trim($this->previewImage->textContent) . '.L') : '';
+    }
+}

src/Lookup/YouTubeLookup.php

@@ -4,7 +4,6 @@ namespace Uiharu\Lookup;
 use RuntimeException;
 use Uiharu\Config;
 use Uiharu\Url;
-use Index\MediaType;
 
 final class YouTubeLookup implements \Uiharu\ILookup {
     private const SHORT_DOMAINS = [

uiharu.php

@@ -12,7 +12,7 @@ define('UIH_DEBUG', is_file(UIH_ROOT . '/.debug'));
 define('UIH_PUBLIC', UIH_ROOT . '/public');
 define('UIH_SOURCE', UIH_ROOT . '/src');
 define('UIH_LIBRARY', UIH_ROOT . '/lib');
-define('UIH_VERSION', '20220716');
+define('UIH_VERSION', '20230125');
 
 require_once UIH_LIBRARY . '/index/index.php';