Can send an invitation

src/helpers/groups_helper.rs

@@ -331,6 +331,18 @@ pub fn get_list_members(g: &GroupID) -> ResultBoxError<Vec<GroupMember>> {
         .exec(db_to_group_member)
 }
 
+/// Send an invitation to a user
+pub fn send_invitation(group_id: &GroupID, user_id: &UserID) -> ResultBoxError {
+    insert_member(&GroupMember {
+        id: 0,
+        user_id: user_id.clone(),
+        group_id: group_id.clone(),
+        time_create: time(),
+        level: GroupMembershipLevel::INVITED,
+        following: true,
+    })
+}
+
 /// Turn a database entry into a group struct
 fn db_to_group(row: &database::RowResult) -> ResultBoxError<Group> {
     let group_id = row.get_group_id("id")?;