add: forum posts timeline

crates/core/src/database/posts.rs

@@ -1606,6 +1606,57 @@ impl DataManager {
         Ok(res.unwrap())
     }
 
+    /// Get forum posts from all communities, sorted by creation.
+    ///
+    /// # Arguments
+    /// * `batch` - the limit of posts in each page
+    /// * `page` - the page number
+    pub async fn get_latest_forum_posts(
+        &self,
+        batch: usize,
+        page: usize,
+        as_user: &Option<User>,
+        before_time: usize,
+    ) -> Result<Vec<Post>> {
+        // check if we should hide nsfw posts
+        let mut hide_nsfw: bool = true;
+
+        if let Some(ua) = as_user {
+            hide_nsfw = !ua.settings.show_nsfw;
+        }
+
+        // ...
+        let conn = match self.0.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = query_rows!(
+            &conn,
+            &format!(
+                "SELECT * FROM posts WHERE replying_to = 0{}{} AND NOT context LIKE '%\"full_unlist\":true%' AND NOT topic = 0 ORDER BY created DESC LIMIT $1 OFFSET $2",
+                if before_time > 0 {
+                    format!(" AND created < {before_time}")
+                } else {
+                    String::new()
+                },
+                if hide_nsfw {
+                    " AND NOT context LIKE '%\"is_nsfw\":true%'"
+                } else {
+                    ""
+                }
+            ),
+            &[&(batch as i64), &((page * batch) as i64)],
+            |x| { Self::get_post_from_row(x) }
+        );
+
+        if res.is_err() {
+            return Err(Error::GeneralNotFound("post".to_string()));
+        }
+
+        Ok(res.unwrap())
+    }
+
     /// Get posts from all communities the given user is in.
     ///
     /// # Arguments