From a5daebb6ba7e6dfee45ca262ff1845730040a241 Mon Sep 17 00:00:00 2001
From: shweshi <contactmespg@gmail.com>
Date: Thu, 11 Jan 2018 00:45:48 +0530
Subject: [PATCH] Added code to fetch open graph data

---
 .gitignore                          |  1 +
 composer.json                       | 19 +++++++++++
 src/Facades/OpenGraphFacade.php     | 13 ++++++++
 src/OpenGraph.php                   | 49 +++++++++++++++++++++++++++++
 src/Providers/OpenGraphProvider.php | 29 +++++++++++++++++
 5 files changed, 111 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 composer.json
 create mode 100644 src/Facades/OpenGraphFacade.php
 create mode 100644 src/OpenGraph.php
 create mode 100644 src/Providers/OpenGraphProvider.php

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..57872d0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/vendor/
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..d9a0f70
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,19 @@
+{
+    "name": "shweshi/opengraph",
+    "description": "A Laravel package to fetch website Open Graph metadata.",
+    "type": "library",
+    "authors": [
+        {
+            "name": "Shashi Prakash Gautam",
+            "email": "contactmespg@gmail.com"
+        }
+    ],
+    "require": {},
+
+    "autoload": {
+        "psr-4": {
+            "App\\": "app/",
+            "shweshi\\OpenGraph\\": "packages/shweshi/OpenGraph/src"
+        }
+    }
+}
diff --git a/src/Facades/OpenGraphFacade.php b/src/Facades/OpenGraphFacade.php
new file mode 100644
index 0000000..0b1b7af
--- /dev/null
+++ b/src/Facades/OpenGraphFacade.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace shweshi\OpenGraph\Facades;
+
+use Illuminate\Support\Facades\Facade;
+
+class OpenGraphFacade extends Facade {
+
+    protected static function getFacadeAccessor() {
+        return 'OpenGraph';
+    }
+
+}
diff --git a/src/OpenGraph.php b/src/OpenGraph.php
new file mode 100644
index 0000000..8087340
--- /dev/null
+++ b/src/OpenGraph.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace shweshi\OpenGraph;
+
+use DOMDocument;
+
+class OpenGraph {
+
+    public function fetch($url) {
+        $html = $this->curl_get_contents($url);
+
+        /**
+         * parsing starts here:
+         */
+        $doc = new DOMDocument();
+        @$doc->loadHTML($html);
+
+
+        $tags = $doc->getElementsByTagName('meta');
+        $metadata = array();
+
+        foreach ($tags as $tag) {
+            if ($tag->hasAttribute('property') && strpos($tag->getAttribute('property'), 'og:') === 0) {
+                $key = strtr(substr($tag->getAttribute('property'), 3), '-', '_');
+                $value = $tag->getAttribute('content');
+            }
+            if (!empty($key)) {
+                $metadata[$key] = $value;
+            }
+        }
+
+        return $metadata;
+    }
+
+    protected function curl_get_contents($url) {
+        $curl = curl_init($url);
+        curl_setopt($curl, CURLOPT_FAILONERROR, 1);
+        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
+        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
+        curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
+        $response = curl_exec($curl);
+        curl_close($curl);
+        return $response;
+    }
+
+}
diff --git a/src/Providers/OpenGraphProvider.php b/src/Providers/OpenGraphProvider.php
new file mode 100644
index 0000000..7328792
--- /dev/null
+++ b/src/Providers/OpenGraphProvider.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace shweshi\OpenGraph\Providers;
+
+use Illuminate\Support\ServiceProvider;
+
+class OpenGraphProvider extends ServiceProvider {
+
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot() {
+        //
+    }
+
+    /**
+     * Register the application services.
+     *
+     * @return void
+     */
+    public function register() {
+        $this->app->bind('OpenGraph', function() {
+            return new \shweshi\OpenGraph\OpenGraph;
+        });
+    }
+
+}