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added 'Signed'
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3 changed files with 99 additions and 4 deletions
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@ -11,6 +11,7 @@ License-files: LICENSE
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library
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hs-source-dirs: src
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exposed-modules: Week05.Free
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, Week05.Signed
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build-depends: aeson
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, base ^>=4.14.1.0
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, containers
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@ -32,12 +32,12 @@ import Playground.Types (KnownCurrency (..))
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import Text.Printf (printf)
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import Wallet.Emulator.Wallet
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{-# INLINABLE mkValidator #-}
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mkValidator :: ScriptContext -> Bool
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mkValidator _ = True
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{-# INLINABLE mkPolicy #-}
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mkPolicy :: ScriptContext -> Bool
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mkPolicy _ = True
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policy :: Scripts.MonetaryPolicy
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policy = mkMonetaryPolicyScript $$(PlutusTx.compile [|| Scripts.wrapMonetaryPolicy mkValidator ||])
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policy = mkMonetaryPolicyScript $$(PlutusTx.compile [|| Scripts.wrapMonetaryPolicy mkPolicy ||])
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curSymbol :: CurrencySymbol
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curSymbol = scriptCurrencySymbol policy
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94
code/week05/src/Week05/Signed.hs
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94
code/week05/src/Week05/Signed.hs
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@ -0,0 +1,94 @@
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DeriveAnyClass #-}
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{-# LANGUAGE DeriveGeneric #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE TypeApplications #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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module Week05.Signed where
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import Control.Monad hiding (fmap)
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import Control.Monad.Freer.Extras as Extras
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import Data.Aeson (ToJSON, FromJSON)
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import Data.Text (Text)
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import Data.Void (Void)
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import GHC.Generics (Generic)
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import Plutus.Contract as Contract hiding (when)
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import Plutus.Trace.Emulator as Emulator
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import qualified PlutusTx
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import PlutusTx.Prelude hiding (Semigroup(..), unless)
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import Ledger hiding (singleton)
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import Ledger.Constraints as Constraints
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import qualified Ledger.Typed.Scripts as Scripts
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import Ledger.Value as Value
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import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage, ToSchema)
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import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
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import Playground.Types (KnownCurrency (..))
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import Text.Printf (printf)
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import Wallet.Emulator.Wallet
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{-# INLINABLE mkPolicy #-}
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mkPolicy :: PubKeyHash -> ScriptContext -> Bool
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mkPolicy pkh ctx = txSignedBy (scriptContextTxInfo ctx) pkh
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policy :: PubKeyHash -> Scripts.MonetaryPolicy
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policy pkh = mkMonetaryPolicyScript $
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$$(PlutusTx.compile [|| Scripts.wrapMonetaryPolicy . mkPolicy ||])
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`PlutusTx.applyCode`
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PlutusTx.liftCode pkh
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curSymbol :: PubKeyHash -> CurrencySymbol
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curSymbol = scriptCurrencySymbol . policy
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data MintParams = MintParams
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{ mpTokenName :: !TokenName
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, mpAmount :: !Integer
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} deriving (Generic, ToJSON, FromJSON, ToSchema)
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type SignedSchema =
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BlockchainActions
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.\/ Endpoint "mint" MintParams
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mint :: (HasBlockchainActions s, AsContractError e) => MintParams -> Contract w s e ()
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mint mp = do
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pkh <- pubKeyHash <$> Contract.ownPubKey
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let val = Value.singleton (curSymbol pkh) (mpTokenName mp) (mpAmount mp)
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lookups = Constraints.monetaryPolicy $ policy pkh
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tx = Constraints.mustForgeValue val
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ledgerTx <- submitTxConstraintsWith @Void lookups tx
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void $ awaitTxConfirmed $ txId ledgerTx
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Contract.logInfo @String $ printf "forged %s" (show val)
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endpoints :: Contract () SignedSchema Text ()
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endpoints = mint' >> endpoints
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where
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mint' = endpoint @"mint" >>= mint
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mkSchemaDefinitions ''SignedSchema
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mkKnownCurrencies []
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test :: IO ()
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test = runEmulatorTraceIO $ do
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let tn = "ABC"
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h1 <- activateContractWallet (Wallet 1) endpoints
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h2 <- activateContractWallet (Wallet 2) endpoints
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callEndpoint @"mint" h1 $ MintParams
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{ mpTokenName = tn
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, mpAmount = 555
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}
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callEndpoint @"mint" h2 $ MintParams
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{ mpTokenName = tn
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, mpAmount = 444
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}
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void $ Emulator.waitNSlots 1
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callEndpoint @"mint" h1 $ MintParams
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{ mpTokenName = tn
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, mpAmount = -222
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}
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void $ Emulator.waitNSlots 1
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