Finalizing MVP for image cache plugin. Closes #27.

www/plugins/jasonwilliams/imgcache/Plugin.php

@@ -5,6 +5,7 @@
  */
 
 use System\Classes\PluginBase;
+use JasonWilliams\ImgCache\Classes\Image;
 
 class Plugin extends PluginBase
 {
@@ -24,7 +25,8 @@ class Plugin extends PluginBase
         return [
             'filters' => [
                 'imgcache' => function($imgurl) {
-                    return $imgurl;
+                    $image = new Image($imgurl);
+                    return $image;
                 }
             ]
         ];

www/plugins/jasonwilliams/imgcache/classes/Image.php

@@ -0,0 +1,52 @@
+<?php namespace JasonWilliams\ImgCache\Classes;
+
+/*
+        Find a faster way of returning in the event of a 404
+*/
+
+use October\Rain\Network\Http;
+use October\Rain\Filesystem\Filesystem;
+
+class Image
+{
+  protected $file;
+  protected $folder;
+  protected $urlbase;
+  protected $imgurl;
+  protected $filename;
+  protected $found = false;
+
+  public function __construct($url)
+  {
+    $this->imgurl = $url;
+    $this->folder = base_path(substr(config('cms.storage.media.path'), 1)).'/external/';
+    $this->urlbase = config('cms.storage.media.path').'/external/';
+    $this->filename = md5($url).'.jpg';
+
+    $fs = new Filesystem;
+
+    if($fs->existsInsensitive($this->folder.$this->filename))
+    {
+      $this->found = true;
+      $this->imgurl = $this->urlbase.$this->filename;
+      return;
+    }
+
+    $req = new Http();
+    $img = $req->get($url, [
+      'CURLOPT_CONNECTTIMEOUT' => 1
+    ]);
+
+    if ($img->code !== 200) $this->imgurl = '/plugins/jasonwilliams/imgcache/assets/images/notfound.png';
+    else {
+      $this->found = true;
+      $fs->put($this->folder.$this->filename, $img);
+      $this->imgurl = $this->urlbase.$this->filename;
+    }
+  }
+
+  public function __toString()
+  {
+    return $this->imgurl;
+  }
+}