# KERI (single table) out-of-order evenst state re-calculation

###### tags: `out_of_order`

@startuml
	start
    :new message [M] processing;
    if (Dip or Drt) then (true)
        if (validate_seal()) then (false)
            if (Error::EventOutOfOrder) then (true)
                :add to **out of order** table;
            else (false)

            endif
            :return Err;
            stop
        else (true)
        endif
    else (false)
    endif
    :add [M] to **kel finalized events** table;
    note
        If at this stage all prev out-of-order
        events were in **kel finalized events**
        they'll be re-calculated in one go by
        **calculate_state()** or ignored if remain
        out-of-order
    endnote
    note right
        change of **calculate_state** required
        should ignore out_of_order events
    endnote
    if (**self.apply_to_state([M]))**) then (Ok)
        :verify event signatures;
        :return Ok(new_state);
        stop
    else (Error)
        :match Error;
        split
            :Error::EventOutOfOrder 
            -> do nothing - already in the DB;
        split again
            :Error::NotEnoughSigs
            -> add [M] to **partialy signed** table
            remove [M] from **kel finalized events**;
            note right
                I dont like this
                Should be in same table too?
            endnote
        split again
            :Error::EventDuplicate
            -> add [M] to **duplicious events** table
            remove [M] from **kel finalized events**;
            note right
                I dont like this
                Should be in same table too?
            endnote
        endsplit
        :return Error;
        stop
@enduml