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(* Open Source License                                                       *)
(* Copyright (c) 2021 Nomadic Labs <contact@nomadic-labs.com>                *)
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let init ctxt delegate =
  Storage.Contract.Frozen_deposits.init
    ctxt
    (Contract_repr.Implicit delegate)
    {initial_amount = Tez_repr.zero; current_amount = Tez_repr.zero}

let allocated = Storage.Contract.Frozen_deposits.mem

let get = Storage.Contract.Frozen_deposits.get

let find = Storage.Contract.Frozen_deposits.find

let update_balance ctxt delegate f amount =
  let delegate_contract = Contract_repr.Implicit delegate in
  get ctxt delegate_contract >>=? fun frozen_deposits ->
  f frozen_deposits.current_amount amount >>?= fun new_amount ->
  Storage.Contract.Frozen_deposits.update
    ctxt
    delegate_contract
    {frozen_deposits with current_amount = new_amount}

let credit_only_call_from_token ctxt delegate amount =
  update_balance ctxt delegate Tez_repr.( +? ) amount

let spend_only_call_from_token ctxt delegate amount =
  update_balance ctxt delegate Tez_repr.( -? ) amount

let update_initial_amount ctxt delegate_contract deposits_cap =
  get ctxt delegate_contract >>=? fun frozen_deposits ->
  Storage.Contract.Frozen_deposits.update
    ctxt
    delegate_contract
    {frozen_deposits with initial_amount = deposits_cap}