initial commit

4 files changed, 208 insertions, 0 deletions

diff --git a/_functions/loadJSON.php b/_functions/loadJSON.php
new file mode 100644
index 0000000..c8540dc
--- /dev/null
+++ b/_functions/loadJSON.php
@@ -0,0 +1,111 @@
+<?php
+
+function loadHomepageJSON(string $fileName): string
+{
+    // Get the file contents and decode JSON
+    $fileContents = file_get_contents($fileName);
+    $data = json_decode($fileContents);
+
+    // Loop through the JSON object
+    $stack = [];
+    $metadata = '';
+    foreach ($data as $postObject) {
+        // Only load published posts
+        if ($postObject->published == 'Yes') {
+            // Add relevant metadata to the output template
+            $year = date_format(date_create($postObject->created), "Y");
+            if (!in_array($year, $stack)) {
+                // If any posts have been created in a list, close the existing <ul> and open a new <ul> after the heading
+                if (!empty($stack)) {
+                    $metadata .= '</ul>';
+                }
+                $metadata .= '<h2 class="text-center">' . $year . '</h2><ul class="blog-posts">';
+                array_push($stack, $year);
+            }
+            $metadata .= '<li><time datetime=' . date_format(date_create($postObject->created), "Y-m-d") . '>' . date_format(date_create($postObject->created), "Y-m-d") . '</time><a href=' . $postObject->link . ' aria-label="Read ' . $postObject->title . ' blog post">' . $postObject->title . '</a></li>';
+        }
+    }
+    $metadata .= '</ul>';
+    return $metadata;
+}
+
+function loadCategoryJSON(string $fileName): string
+{
+    // Get the file contents and decode JSON
+    $fileContents = file_get_contents($fileName);
+    $data = json_decode($fileContents);
+
+    // Sort the JSON data by the `tag`, then by `create`.
+    // I had to sort a -> b to get an "A-Z" sort for `tag`,
+    // but b -> a to get a "first-last" sort for `create`.
+    uasort($data, function ($a, $b) {
+        return strcmp($a->tag, $b->tag) ?: strcmp($b->created, $a->created);
+    });
+
+    // Loop through the JSON object
+    $stack = [];
+    $metadata = '';
+    foreach ($data as $postObject) {
+        // Only load published posts
+        if ($postObject->published == 'Yes') {
+            // Add relevant metadata to the output template
+            $category = str_replace('-', ' ', $postObject->tag);
+            if (!in_array($category, $stack)) {
+                // If any posts have been created in a list, close the existing <ul> and open a new <ul> after the heading
+                if (!empty($stack)) {
+                    $metadata .= '</ul>';
+                }
+                $metadata .= '<h2 id=' . $category . ' class="text-center">' . ucwords($category) . '</h2><ul class="blog-posts">';
+                array_push($stack, $category);
+            }
+
+            $metadata .= '<li><time datetime=' . date_format(date_create($postObject->created), "Y-m-d") . '>' . date_format(date_create($postObject->created), "Y-m-d") . '</time><a href=' . $postObject->link . ' aria-label="Read ' . $postObject->title . ' blog post">' . $postObject->title . '</a></li>';
+        }
+    }
+    $metadata .= '</ul>';
+    return $metadata;
+}
+
+function loadPostJSON(string $fileName, string $query)
+{
+    // Get the file contents and decode JSON
+    $fileContents = file_get_contents($fileName);
+    $data = json_decode($fileContents);
+
+    // Loop through the JSON object
+    foreach ($data as $postObject) {
+        // If this function is called to get a specific post's metadata, return the whole object
+        if ($postObject->link == $GLOBALS['fullDomain'] . "/post/" . $query) {
+            return $postObject;
+        }
+    }
+}
+
+function loadCommentJSON(string $fileName, string $query = null): string
+{
+    // Set up an empty comment section
+    $commentSection = '';
+
+    // Load the file and decode the JSON
+    $fileContents = file_get_contents($fileName);
+    $data = json_decode($fileContents);
+
+    // Sort comments by date - latest comments will appear at the top
+    uasort($data, function ($a, $b) {
+        return strcmp($b->timestamp, $a->timestamp);
+    });
+
+    // Loop through all comments add to returned string if it matches criteria
+    foreach ($data as $commentObject) {
+        if (($query !== null) && ($commentObject->postURL == $GLOBALS['fullDomain'] . "/post/" . $query)) {
+            $securedHTML = parseMarkdown(null, $commentObject->comment);
+            $commentSection .= '<div class="user-comment"><div class="row"><label>Timestamp:</label><p>' . $commentObject->timestamp . '</p></div><div class="row"><label>Name:</label><p>' . $commentObject->username . '</p></div><div class="row markdown"><label>Comment:</label><div class="comment-markdown">' . $securedHTML . '</div></div></div>';
+        } else if ($query == null) {
+            $securedHTML = parseMarkdown(null, $commentObject->comment);
+            $pageURL = str_replace($GLOBALS['fullDomain'] . '/post/', '', $commentObject->postURL);
+            $postObject = loadPostJSON('_data/metadata.json', $pageURL);
+            $commentSection .= '<div class="user-comment"><div class="row"><label>Post:</label><a href="' . $commentObject->postURL . '#comments">' . $postObject->title . '</a></div><div class="row"><label>Timestamp:</label><p>' . $commentObject->timestamp . '</p></div><div class="row"><label>Name:</label><p>' . $commentObject->username . '</p></div><div class="row markdown"><label>Comment:</label><div class="comment-markdown">' . $securedHTML . '</div></div></div>';
+        }
+    }
+    return $commentSection;
+}
\ No newline at end of file
diff --git a/_functions/loadRSS.php b/_functions/loadRSS.php
new file mode 100644
index 0000000..1deb969
--- /dev/null
+++ b/_functions/loadRSS.php
@@ -0,0 +1,51 @@
+<?php
+
+function loadRSS(string $fileName): string
+{
+    // Get the file contents and decode JSON
+    $fileContents = file_get_contents($fileName);
+    $data = json_decode($fileContents);
+
+    // Set-up RSS variables
+    $rssCounter = 0;
+    $rssContents = '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
+    ><channel><atom:link href="' . $GLOBALS['fullDomain'] . '/rss.xml" rel="self" type="application/rss+xml" /><title>Blog</title><link>' . $GLOBALS['fullDomain'] . '</link><description>Lorem ipsum dolor sit amet...</description><copyright>Copyright 20xx - 20xx, My Name</copyright><language>en-us</language><docs>https://cyber.harvard.edu/rss/index.html</docs><lastBuildDate>Mon, 04 Jan 2021 00:00:00 CST</lastBuildDate><ttl>60</ttl><image><url></url><title>Blog</title><link>'.$GLOBALS['fullDomain'].'</link></image>';
+
+    // Loop through the JSON object
+    foreach ($data as $postObject) {
+        // Only load published posts
+        if ($postObject->published == 'Yes') {
+            // Parse the markdown to HTML
+            include_once('_functions/parseMarkdown.php');
+            $fileLink = str_replace($GLOBALS['fullDomain'] . '/post/', '', $postObject->link);
+            $fileName = 'posts/' . $postObject->id . '-' . str_replace('.html', '.md', $fileLink);
+            $securedHTML = parseMarkdown($fileName);
+
+            if ($rssCounter == 0) {
+                $rssContents .= '<lastBuildDate>' . date_format(date_create($postObject->created), 'D, d M Y H:i:s T') . '</lastBuildDate>';
+                $rssCounter = $rssCounter + 1;
+            }
+
+            $rssContents .=
+                '<item><title>' .
+                str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $postObject->title) .
+                '</title><author>' .
+                str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $postObject->author) .
+                '</author><dc:creator>' .
+                str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $postObject->author) .
+                '</dc:creator><link>' .
+                str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $postObject->link) .
+                '</link><pubDate>' .
+                date_format(date_create($postObject->created), 'D, d M Y H:i:s T') .
+                '</pubDate><guid>' .
+                str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $postObject->link) .
+                '</guid><description><![CDATA[' .
+                $postObject->description .
+                ']]></description><content:encoded><![CDATA[' .
+                $securedHTML .
+                ']]></content:encoded></item>';
+        }
+    }
+    $rssContents .= '</channel></rss>';
+    return $rssContents;
+}
\ No newline at end of file
diff --git a/_functions/parseMarkdown.php b/_functions/parseMarkdown.php
new file mode 100644
index 0000000..6ca15d8
--- /dev/null
+++ b/_functions/parseMarkdown.php
@@ -0,0 +1,21 @@
+<?php
+
+function parseMarkdown(string $fileName = null, string $fileContents = null)
+{
+    if ($fileName != null) {
+        // Get file contents
+        $fileContents = file_get_contents('/var/www/' . $GLOBALS['shortDomain'] . '/' . $fileName, FILE_USE_INCLUDE_PATH);
+    }
+
+    // Parse the markdown to HTML
+    include_once('_classes/Parsedown.php');
+    $md = Parsedown::instance()->text($fileContents);
+    $html = new DOMDocument();
+    $html->loadHTML($md);
+    $html_links = $html->getElementsByTagName('a');
+    foreach ($html_links as $html_ink) {
+        $html_ink->setAttribute('rel', 'noopener,noreferrer');
+        $html_ink->setAttribute('target', '_blank');
+    }
+    return $html->saveHTML();
+}
\ No newline at end of file
diff --git a/_functions/submitComment.php b/_functions/submitComment.php
new file mode 100644
index 0000000..d96d39a
--- /dev/null
+++ b/_functions/submitComment.php
@@ -0,0 +1,25 @@
+<?php
+
+function submitComment()
+{
+    // Get the content sent from the comment form
+    $comment = htmlentities($_POST['userContent']);
+    $postURL = $_POST['postURL'];
+
+    // Set default values if blank
+    if (isset($_POST['userName']) && trim($_POST['userName']) !== "") {
+        $username = $_POST['userName'];
+    } else {
+        $username = null;
+    }
+
+    // Create a 'Comment' object
+    include_once('_classes/Comment.php');
+    $userComment = new Comment($comment, $postURL, $username);
+
+    // Append comment to JSON file
+    $userComment->saveComment('_data/comments.json');
+
+    // Send the user back
+    header('Location: ' . $postURL . '#comments');
+}
\ No newline at end of file