basic posting

app/models.py

@@ -267,6 +267,39 @@ class Posts(Model):
         q = f'{self.FULL_POSTS_QUERY} WHERE posts.id = ?'
         return db.fetch_one(q, self.id)
 
+    @classmethod
+    def new(cls, user_id: int, thread_id: int, content: str, language: str = 'babycode') -> Posts:
+        from .lib.babycode import babycode_to_html, babycode_to_rssxml, BABYCODE_VERSION
+        html_content = babycode_to_html(content)
+        rssxml_content = babycode_to_rssxml(content)
+        with db.transaction():
+            post = Posts.create({
+                'thread_id': thread_id,
+                'user_id': user_id,
+                'current_revision_id': None,
+            })
+
+            revision = PostHistory.create({
+                'post_id': post.id,
+                'content': html_content.result,
+                'content_rss': rssxml_content,
+                'is_initial_revision': True,
+                'original_markup': content,
+                'markup_language': language,
+                'format_version': BABYCODE_VERSION,
+            })
+
+            for mention in html_content.mentions:
+                Mentions.create({
+                    'revision_id': revision.id,
+                    'mentioned_iser_id': mention['mentioned_iser_id'],
+                    'start_index': mention['start'],
+                    'end_index': mention['end'],
+                })
+
+            post.update({'current_revision_id': revision.id})
+            return post
+
 class PostHistory(Model):
     table = 'post_history'