Can check if a user is a moderator of a conversation or not

src/helpers/conversations_helper.rs

@@ -107,6 +107,14 @@ pub fn does_user_belongs_to(user_id: UserID, conv_id: u64) -> ResultBoxError<boo
         .exec_count()? > 0)
 }
 
+/// Check out wheter a user is the moderator of a conversation or not
+pub fn is_user_moderator(user_id: UserID, conv_id: u64) -> ResultBoxError<bool> {
+    Ok(database::QueryInfo::new(CONV_LIST_TABLE)
+        .cond_u64("id", conv_id)
+        .cond_user_id("user_id", user_id)
+        .exec_count()? > 0)
+}
+
 /// Turn a database entry into a ConversationInfo object
 fn db_to_conversation_info(row: &database::RowResult) -> ResultBoxError<Conversation> {
     let conv_id = row.get_u64("id")?;