{-# OPTIONS --safe #-}

module Test.Examples.AccountSim.OffChain.Transfer where

open import Ledger.Prelude
open import Ledger.Conway.Specification.Transaction

open import Test.Examples.AccountSim.Datum
open import Test.Examples.AccountSim.OffChain.Lib
open import Test.Examples.AccountSim.Validator
open import Test.Prelude AccountSimData
open import Test.SymbolicData AccountSimData
open import Test.LedgerImplementation SData SData
open import Test.AbstractImplementation valContext
open import Test.Lib valContext

open import Ledger.Conway.Specification.Utxo SVTransactionStructure SVAbstractFunctions

open TransactionStructure SVTransactionStructure
open Implementation


makeTransferTxOut : Label → (scriptIx from to : ℕ) → (v : Value) → TxOut → List (ℕ × TxOut)
makeTransferTxOut (Always l) ix from to v (fst , fst' , snd) =
  (ix , (fst , fst' ,  just (inj₁ (inj₁ (inj₁ (Always (insert' from (vF - v) (insert' to (_+_ {{addValue}} vT v) l)))))) , nothing)) ∷ []
  where
    vF = getVal (Always l) from
    vT = getVal (Always l) to

makeTransferTx : (id : ℕ) → UTxOState → PlutusScript → (from to : ℕ) → (v : Value) → Maybe Tx
makeTransferTx id state script@(sh , _) from to v =
  let
    wutxo = getWalletUTxO from (UTxOState.utxo state)
  in
    maybe (λ { (scIn , scOut) → maybe (λ label →
    just (
          record { body = record defaultTxBody
                         { txIns = Ledger.Prelude.fromList ((scIn ∷ []) ++ (map proj₁ wutxo))
                         ; txOuts = fromListIx (makeFeeTxOut wutxo ++ makeTransferTxOut label (proj₂ scIn) from to v scOut )
                         ; txId = id
                         ; collateralInputs = Ledger.Prelude.fromList (map proj₁ wutxo)
                         ; reqSignerHashes = Ledger.Prelude.fromList (from ∷ [])
                         } ;
                wits = record { vkSigs = fromListᵐ ((from , (_+_ {{addNat}} (getTxId wutxo) from)) ∷ []) ;
                                scripts = Ledger.Prelude.fromList ((inj₂ script) ∷ []) ;
                                txdats = ∅ ; 
                                txrdmrs = fromListᵐ (((Spend , (proj₂ scIn)) ,
                                                      inj₁ (inj₂ (Transfer from to v)) , --(Add w) 
                                                      ((getTxId wutxo) , from)) ∷ []) } ;
                txsize =  ;
                isValid = true ;
                txAD = nothing }
                ))
            nothing
            (getLabel scOut)})
          nothing
          (getScriptUTxO sh (UTxOState.utxo state))