Created feeds and UI for feeds and newsletter

Signed-off-by: rodude123 <rodude123@gmail.com>

dist/api/blog/blogData.php

@@ -2,13 +2,18 @@
 
 namespace api\blog;
 
+use api\utils\feedGenerator\FeedWriter;
 use api\utils\imgUtils;
 use DOMDocument;
 use PDO;
 use Psr\Http\Message\UploadedFileInterface;
+use function DI\string;
+use const api\utils\feedGenerator\ATOM;
+use const api\utils\feedGenerator\RSS2;
 
 require_once __DIR__ . "/../utils/config.php";
 require_once __DIR__ . "/../utils/imgUtils.php";
+require_once __DIR__ . "/../utils/feedGenerator/FeedWriter.php";
 
 /**
  * Blog Data Class
@@ -18,12 +23,15 @@ class blogData
 {
     /**
      * Get all blog posts
-     * @return array - Array of all blog posts or error message
+     * @return array<array> - Array of all blog posts or error message
      */
     public function getBlogPosts(): array
     {
         $conn = dbConn();
-        $stmt = $conn->prepare("SELECT * FROM blog ORDER BY featured DESC, dateCreated DESC;");
+        $stmt = $conn->prepare("SELECT ID, title, DATE_FORMAT(dateCreated, '%Y-%m-%dT%TZ') AS dateCreated, 
+                                       DATE_FORMAT(dateModified, '%Y-%m-%dT%TZ') AS dateModified, featured, abstract, 
+                                       headerImg, body, bodyText, categories, folderID FROM blog ORDER BY featured DESC, 
+                                       dateCreated DESC;");
         $stmt->execute();
 
         // set the resulting array to associative
@@ -40,12 +48,15 @@ class blogData
     /**
      * Get a blog post with the given ID
      * @param string $title - Title of the blog post
-     * @return array - Array of all blog posts or error message
+     * @return array - Array of blog post or error message
      */
     public function getBlogPost(string $title): array
     {
         $conn = dbConn();
-        $stmt = $conn->prepare("SELECT * FROM blog WHERE title = :title;");
+        $stmt = $conn->prepare("SELECT ID, title, DATE_FORMAT(dateCreated, '%Y-%m-%dT%TZ') AS dateCreated, 
+                                       DATE_FORMAT(dateModified, '%Y-%m-%dT%TZ') AS dateModified, featured, abstract, 
+                                       headerImg, body, bodyText, categories, folderID  FROM blog WHERE 
+                                       title = :title;");
         $stmt->bindParam(":title", $title);
         $stmt->execute();
 
@@ -67,7 +78,10 @@ class blogData
     public function getLatestBlogPost(): array
     {
         $conn = dbConn();
-        $stmt = $conn->prepare("SELECT * FROM blog ORDER BY dateCreated DESC LIMIT 1;");
+        $stmt = $conn->prepare("SELECT ID, title, DATE_FORMAT(dateCreated, '%Y-%m-%dT%TZ') AS dateCreated, 
+                                       DATE_FORMAT(dateModified, '%Y-%m-%dT%TZ') AS dateModified, featured, abstract, 
+                                       headerImg, body, bodyText, categories, folderID FROM blog ORDER BY 
+                                       dateCreated DESC LIMIT 1;");
         $stmt->execute();
 
         // set the resulting array to associative
@@ -88,7 +102,9 @@ class blogData
     public function getFeaturedBlogPost(): array
     {
         $conn = dbConn();
-        $stmt = $conn->prepare("SELECT * FROM blog WHERE featured = 1;");
+        $stmt = $conn->prepare("SELECT ID, title, DATE_FORMAT(dateCreated, '%Y-%m-%dT%TZ') AS dateCreated, 
+                                       DATE_FORMAT(dateModified, '%Y-%m-%dT%TZ') AS dateModified, featured, abstract, 
+                                       headerImg, body, bodyText, categories, folderID FROM blog WHERE featured = 1;");
         $stmt->execute();
 
         $result = $stmt->fetch(PDO::FETCH_ASSOC);
@@ -399,11 +415,10 @@ class blogData
                 if (!in_array($from . $file, $srcList))
                 {
                     unlink($from . $file);
+                    continue;
                 }
-                else
-                {
-                    rename($from . $file, $to . $file);
-                }
+
+                rename($from . $file, $to . $file);
             }
         }
 
@@ -418,7 +433,7 @@ class blogData
     /**
      * Get all posts with the given category
      * @param string $category - Category of the post
-     * @return array - Array of all posts with the given category or error message
+     * @return array<array> - Array of all posts with the given category or error message
      */
     public function getPostsByCategory(string $category): array
     {
@@ -432,7 +447,7 @@ class blogData
     /**
      * Search for a blog post with the given search term
      * @param string $searchTerm - Search term
-     * @return array - Array of all posts with the given search term or error message
+     * @return array<array> - Array of all posts with the given search term or error message
      */
     public function searchBlog(string $searchTerm): array
     {
@@ -527,4 +542,109 @@ class blogData
 
         return $result;
     }
+
+    /**
+     * Generate the XML feed
+     * @param mixed $type - Type of feed
+     * @return array|string - Error message or the XML feed
+     */
+    private function generateXMLFeed(mixed $type): array|string
+    {
+        ob_start();
+        $feed = new FeedWriter($type);
+        $feed->setTitle("Rohit Pai's Blog");
+        $feed->setLink('https://rohitpai.co.uk/blog');
+        $feed->setFeedURL('https://rohitpai.co.uk/api/blog/feed/atom');
+        $feed->setChannelElement('updated', date(DATE_ATOM, time()));
+        $feed->setChannelElement('author', ['name' => 'Rohit Pai']);
+        $posts = $this->getBlogPosts();
+
+        if (isset($posts["errorMessage"]))
+        {
+            return $posts;
+        }
+
+        foreach ($posts as $post)
+        {
+            $newItem = $feed->createNewItem();
+            $newItem->setTitle($post["title"]);
+            $newItem->setLink("https://rohitpai.co.uk/blog/post/" . rawurlencode($post["title"]) . "#disqus_thread");
+            $newItem->setDate($post["dateModified"]);
+            $newItem->setDescription($post["body"]);
+            $feed->addItem($newItem);
+        }
+
+        $feed->generateFeed();
+        $atom = ob_get_contents();
+        ob_end_clean();
+        return $atom;
+    }
+
+    /**
+     * Generate the JSON feed
+     * @return array|array[] - Error message or the JSON feed
+     */
+    private function generateJSONFeed(): array
+    {
+        $posts = $this->getBlogPosts();
+
+        if (isset($posts["errorMessage"]))
+        {
+            return $posts;
+        }
+
+        $json = array();
+        $json["version"] = "https://jsonfeed.org/version/1.1";
+        $json["title"] = "Rohit Pai's Blog";
+        $json["home_page_url"] = "https://rohitpai.co.uk/blog";
+        $json["feed_url"] = "https://rohitpai.co.uk/api/blog/feed/json";
+        $json["description"] = "Rohit Pai's personal blog on all things self hosting and various other tech topics";
+        $json["author"] = array(
+            "name" => "Rohit Pai",
+            "url" => "https://rohitpai.co.uk",
+            "avatar" => "https://rohitpai.co.uk/imgs/profile.jpg"
+        );
+        $items = array();
+        foreach ($posts as $post)
+        {
+            $items[] = array(
+                "id" => string($post["ID"]),
+                "url" => "https://rohitpai.co.uk/blog/post/" . rawurlencode($post["title"]) . "#disqus_thread",
+                "title" => $post["title"],
+                "date_published" => date($post["dateCreated"]),
+                "date_modified" => date($post["dateModified"]),
+//                "description" => $post["abstract"],
+                "banner_image" => "https://rohitpai.co.uk/" . rawurlencode($post["headerImg"]),
+                "content_html" => $post["body"]
+            );
+        }
+        $json["items"] = $items;
+        return $json;
+    }
+
+    /**
+     * Generate the RSS feed based on type
+     * @param string $type - Type of feed
+     * @return string|array - RSS feed or an error message
+     */
+    public function getFeed(string $type): string|array
+    {
+        $feed = "";
+        if ($type == "atom")
+        {
+            $feed = $this->generateXMLFeed(ATOM);
+        }
+
+        if ($type == "rss")
+        {
+            $feed = $this->generateXMLFeed(RSS2);
+        }
+
+        if ($type == "json")
+        {
+            $feed = $this->generateJSONFeed();
+        }
+
+        return $feed;
+    }
 }