implement formatted note contents (html and commonmark)

1 files changed, 34 insertions, 2 deletions

diff --git a/Digitigrade/Model/Note.php b/Digitigrade/Model/Note.php
index a4df99d..d5d4e69 100644
--- a/Digitigrade/Model/Note.php
+++ b/Digitigrade/Model/Note.php
@@ -2,6 +2,8 @@
 namespace Digitigrade\Model;
 
 use Digitigrade\Db;
+use Digitigrade\FormattingProvider\CommonMark;
+use Digitigrade\FormattingProvider\SanitisedHtml;
 use Digitigrade\Model\HomeTimelineItem;
 use Digitigrade\Notification\Notifyable;
 use Digitigrade\Timeline\TimelineIncludeable;
@@ -91,6 +93,7 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
         $this->saveMentions();
         $this->saveAttachments();
         $this->saveExtensions();
+        $this->saveFormattedContents();
     }
 
     protected function validate(): bool {
@@ -102,7 +105,11 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
         $pdo = Db::getInstance()->getPdo();
         $stmt = $pdo->prepare('SELECT mimetype, body FROM note_formatted_content WHERE note_id = ?');
         $stmt->execute([$this->id]);
-        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $rows = $stmt->fetchAll();
+        return array_combine(
+            array_map(fn($row) => $row['mimetype'], $rows),
+            array_map(fn($row) => $row['body'], $rows)
+        );
     }
 
     private function findMentions(): array {
@@ -126,6 +133,17 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
         return $items;
     }
 
+    private function saveFormattedContents() {
+        $pdo = Db::getInstance()->getPdo();
+        foreach ($this->formattedContent as $mimetype => $body) {
+            $stmt = $pdo->prepare(
+                'INSERT INTO note_formatted_content(note_id, mimetype, body) VALUES (?, ?, ?)' .
+                'ON CONFLICT (note_id, mimetype) DO UPDATE SET body = EXCLUDED.body'
+            );
+            $stmt->execute([$this->id, $mimetype, $body]);
+        }
+    }
+
     private function saveMentions() {
         $pdo = Db::getInstance()->getPdo();
         foreach ($this->mentions as $mention) {
@@ -230,7 +248,21 @@ class Note extends PushableModel implements TimelineIncludeable, Notifyable {
      * @return ?string the marked up content
      */
     public function getFormattedContent(string $mimetype): ?string {
-        return array_filter($this->formattedContent, fn($item) => $item['mimetype'] == $mimetype)[0]['body'] ?? null;
+        return $this->formattedContent[$mimetype] ?? null;
+    }
+
+    /**
+     * Gets the best available formatted content (or plain if there aren't any)
+     * and converts it to sanitised HTML
+     * @return string HTML that is hopefully safe to include directly
+     */
+    public function getBestContentAsHtml(): string {
+        if (isset($this->formattedContent['text/html'])) {
+            return SanitisedHtml::getInstance()->renderToHtml($this->formattedContent['text/html']);
+        } elseif (isset($this->formattedContent['text/markdown'])) {
+            return CommonMark::getInstance()->renderToHtml($this->formattedContent['text/markdown']);
+        }
+        return htmlspecialchars($this->plainContent);
     }
 
     public function renderAsHtml() {