Can add member to conversations

src/data/conversation.rs

@@ -70,6 +70,11 @@ impl Conversation {
             .any(|m| m.user_id == user_id && m.is_admin)
     }
 
+    /// Check out whether a user can add members to a conversation or not
+    pub fn can_user_add_members(&self, user_id: &UserID) -> bool {
+        !self.is_managed() && (self.is_admin(user_id) || self.can_everyone_add_members)
+    }
+
     /// Check out whether a user is the last administrator of a conversation or not
     pub fn is_last_admin(&self, user_id: &UserID) -> bool {
         let admins: Vec<&ConversationMember> = self.members
@@ -79,6 +84,11 @@ impl Conversation {
 
         admins.len() == 1 && admins[0].user_id == user_id
     }
+
+    /// Get the membership of a user over a conversation
+    pub fn get_membership(&self, user_id: &UserID) -> Option<&ConversationMember> {
+        self.members.iter().filter(|u| u.user_id == user_id).next()
+    }
 }
 
 /// Structure used to update the list of members of the conversation