/rdfDescribe の追加

app/Http/Controllers/InfoController.php

@@ -6,6 +6,7 @@
 use Carbon\Carbon;
 use Exception;
 use ZipArchive;
+use Illuminate\Support\Facades\Http;
 
 class InfoController extends Controller
 {
@@ -172,6 +173,25 @@ public function generateImeDic(){
         return view('main.imedic', compact('dicString'));
     }
 
+    public function rdfDescribe(string $resource = null){
+        if (is_null($resource)) abort(400, "リソースが指定されていません");
+
+        $turtle = http::get(config('lemonade.sparqlEndpoint'), [
+            'format' => 'turtle',
+            'query' => <<<SPARQL
+PREFIX lilyrdf: <https://lily.fvhp.net/rdf/RDFs/detail/>
+DESCRIBE lilyrdf:$resource
+SPARQL
+        ])->throw(function ($response, $e){
+            abort(502, "SPARQLエンドポイントが正しく応答しませんでした。");
+        })->body();
+
+        if(mb_strlen(trim(preg_replace('/^@prefix.+$/im','',$turtle))) === 0)
+            abort(404, "該当するリソースが存在しません");
+
+        return view('main.rdfDescribe', compact('turtle', 'resource'));
+    }
+
     public function ed403(){
         abort(403);
     }

resources/views/main/rdfDescribe.blade.php

@@ -0,0 +1,29 @@
+@extends('app.layout', ['title' => 'RDF簡易参照'])
+
+@section('head')
+    <meta name="robots" content="noindex">
+    <link rel=stylesheet href="//codemirror.net/lib/codemirror.css">
+    <script src="//codemirror.net/lib/codemirror.js"></script>
+    <script src="//codemirror.net/mode/turtle/turtle.js"></script>
+@endsection
+
+@section('main')
+    <main>
+        <h2>lilyrdf:{{ $resource }}</h2>
+        <label>
+            <textarea id="turtle" readonly>{{ $turtle ?? '' }}</textarea>
+        </label>
+        <script>
+            const cm = CodeMirror.fromTextArea(document.getElementById('turtle'), {
+                lineNumbers: true,
+                readOnly: true,
+                mode: 'text/turtle'
+            });
+            cm.setSize('100%','100%');
+        </script>
+        <p>
+            SPARQL endpoint : <a href="{{ config('lemonade.sparqlEndpoint') }}" target="_blank">{{ config('lemonade.sparqlEndpoint') }}</a><br>
+            Syntax highlight : <a href="https://codemirror.net/" target="_blank">CodeMirror</a>
+        </p>
+    </main>
+@endsection

routes/web.php

@@ -31,6 +31,8 @@
 
 Route::get('/imedic', [InfoController::class, 'generateImeDic'])->name('imedic');
 
+Route::get('/rdfDescribe/{resource}', [InfoController::class, 'rdfDescribe'])->name('rdfDescribe');
+
 Route::middleware('throttle:30,1')->group(function (){
     Route::get('/ogp/{type}/{title}.jpg', [OGPController::class, 'generate'])->name('ogp');
 });