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started with code for week 2
This commit is contained in:
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7 changed files with 755 additions and 0 deletions
21
code/week02/.devcontainer/devcontainer.json
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21
code/week02/.devcontainer/devcontainer.json
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|
@ -0,0 +1,21 @@
|
|||
{
|
||||
"name": "Plutus Starter Project",
|
||||
"image": "plutus-devcontainer:latest",
|
||||
|
||||
"mounts": [
|
||||
// This shares cabal's remote repository state with the host. We don't mount the whole of '.cabal', because
|
||||
// 1. '.cabal/config' contains absolute paths that will only make sense on the host, and
|
||||
// 2. '.cabal/store' is not necessarily portable to different version of cabal etc.
|
||||
"source=${localEnv:HOME}/.cabal/packages,target=/root/.cabal/packages,type=bind,consistency=cached",
|
||||
],
|
||||
|
||||
"settings": {
|
||||
// Note: don't change from bash so it runs .bashrc
|
||||
"terminal.integrated.shell.linux": "/bin/bash"
|
||||
},
|
||||
|
||||
// IDs of extensions inside container
|
||||
"extensions": [
|
||||
"haskell.haskell"
|
||||
],
|
||||
}
|
1
code/week02/.gitignore
vendored
Normal file
1
code/week02/.gitignore
vendored
Normal file
|
@ -0,0 +1 @@
|
|||
dist-newstyle/
|
201
code/week02/LICENSE
Normal file
201
code/week02/LICENSE
Normal file
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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|
||||
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Notwithstanding the above, nothing herein shall supersede or modify
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END OF TERMS AND CONDITIONS
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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136
code/week02/cabal.project
Normal file
136
code/week02/cabal.project
Normal file
|
@ -0,0 +1,136 @@
|
|||
index-state: 2021-02-24T00:00:00Z
|
||||
|
||||
packages: ./.
|
||||
|
||||
-- You never, ever, want this.
|
||||
write-ghc-environment-files: never
|
||||
|
||||
-- Always build tests and benchmarks.
|
||||
tests: true
|
||||
benchmarks: true
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/plutus.git
|
||||
subdir:
|
||||
freer-extras
|
||||
playground-common
|
||||
plutus-core
|
||||
plutus-contract
|
||||
plutus-ledger
|
||||
plutus-ledger-api
|
||||
plutus-tx
|
||||
plutus-tx-plugin
|
||||
prettyprinter-configurable
|
||||
tag: 3746610e53654a1167aeb4c6294c6096d16b0502
|
||||
|
||||
-- The following sections are copied from the 'plutus' repository cabal.project at the revision
|
||||
-- given above.
|
||||
-- This is necessary because the 'plutus' libraries depend on a number of other libraries which are
|
||||
-- not on Hackage, and so need to be pulled in as `source-repository-package`s themselves. Make sure to
|
||||
-- re-update this section from the template when you do an upgrade.
|
||||
|
||||
package eventful-sql-common
|
||||
ghc-options: -XDerivingStrategies -XStandaloneDeriving -XUndecidableInstances -XDataKinds -XFlexibleInstances
|
||||
|
||||
allow-newer:
|
||||
-- Has a commit to allow newer aeson, not on Hackage yet
|
||||
monoidal-containers:aeson
|
||||
-- Pins to an old version of Template Haskell, unclear if/when it will be updated
|
||||
, size-based:template-haskell
|
||||
|
||||
-- The following two dependencies are needed by plutus.
|
||||
, eventful-sql-common:persistent
|
||||
, eventful-sql-common:persistent-template
|
||||
|
||||
constraints:
|
||||
-- aws-lambda-haskell-runtime-wai doesn't compile with newer versions
|
||||
aws-lambda-haskell-runtime <= 3.0.3
|
||||
|
||||
-- Needs some patches, but upstream seems to be fairly dead (no activity in > 1 year)
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/shmish111/purescript-bridge.git
|
||||
tag: 6a92d7853ea514be8b70bab5e72077bf5a510596
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/shmish111/servant-purescript.git
|
||||
tag: a76104490499aa72d40c2790d10e9383e0dbde63
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-crypto.git
|
||||
tag: f73079303f663e028288f9f4a9e08bcca39a923e
|
||||
|
||||
-- Needs a fix (https://github.com/wenkokke/unlit/pull/11) and a Hackage release
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/michaelpj/unlit.git
|
||||
tag: 9ca1112093c5ffd356fc99c7dafa080e686dd748
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-base
|
||||
tag: 4251c0bb6e4f443f00231d28f5f70d42876da055
|
||||
subdir:
|
||||
binary
|
||||
binary/test
|
||||
slotting
|
||||
cardano-crypto-class
|
||||
cardano-crypto-praos
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-prelude
|
||||
tag: ee4e7b547a991876e6b05ba542f4e62909f4a571
|
||||
subdir:
|
||||
cardano-prelude
|
||||
cardano-prelude-test
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/ouroboros-network
|
||||
tag: 6cb9052bde39472a0555d19ade8a42da63d3e904
|
||||
subdir:
|
||||
typed-protocols
|
||||
typed-protocols-examples
|
||||
ouroboros-network
|
||||
ouroboros-network-testing
|
||||
ouroboros-network-framework
|
||||
io-sim
|
||||
io-sim-classes
|
||||
network-mux
|
||||
Win32-network
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/iohk-monitoring-framework
|
||||
tag: a89c38ed5825ba17ca79fddb85651007753d699d
|
||||
subdir:
|
||||
iohk-monitoring
|
||||
tracer-transformers
|
||||
contra-tracer
|
||||
plugins/backend-ekg
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-ledger-specs
|
||||
tag: 097890495cbb0e8b62106bcd090a5721c3f4b36f
|
||||
subdir:
|
||||
byron/chain/executable-spec
|
||||
byron/crypto
|
||||
byron/crypto/test
|
||||
byron/ledger/executable-spec
|
||||
byron/ledger/impl
|
||||
byron/ledger/impl/test
|
||||
semantics/executable-spec
|
||||
semantics/small-steps-test
|
||||
shelley/chain-and-ledger/dependencies/non-integer
|
||||
shelley/chain-and-ledger/executable-spec
|
||||
shelley-ma/impl
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/goblins
|
||||
tag: cde90a2b27f79187ca8310b6549331e59595e7ba
|
4
code/week02/hie.yaml
Normal file
4
code/week02/hie.yaml
Normal file
|
@ -0,0 +1,4 @@
|
|||
cradle:
|
||||
cabal:
|
||||
- path: "./src"
|
||||
component: "lib:plutus-pioneer-program-week02"
|
24
code/week02/plutus-pioneer-program-week02.cabal
Normal file
24
code/week02/plutus-pioneer-program-week02.cabal
Normal file
|
@ -0,0 +1,24 @@
|
|||
Cabal-Version: 2.4
|
||||
Name: plutus-pioneer-program-week02
|
||||
Version: 0.1.0.0
|
||||
Author: Lars Bruenjes
|
||||
Maintainer: brunjlar@gmail.com
|
||||
Build-Type: Simple
|
||||
Copyright: © 2021 Lars Bruenjes
|
||||
License: Apache-2.0
|
||||
License-files: LICENSE
|
||||
|
||||
library
|
||||
hs-source-dirs: src
|
||||
exposed-modules: Week02.Validators
|
||||
build-depends: aeson
|
||||
, base ^>=4.14.1.0
|
||||
, containers
|
||||
, playground-common
|
||||
, plutus-contract
|
||||
, plutus-ledger
|
||||
, plutus-tx-plugin
|
||||
, plutus-tx
|
||||
, text
|
||||
default-language: Haskell2010
|
||||
ghc-options: -Wall -fobject-code -fno-ignore-interface-pragmas -fno-omit-interface-pragmas -fno-strictness -fno-spec-constr -fno-specialise
|
368
code/week02/src/Week02/Validators.hs
Normal file
368
code/week02/src/Week02/Validators.hs
Normal file
|
@ -0,0 +1,368 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
|
||||
{-# LANGUAGE LambdaCase #-}
|
||||
{-# LANGUAGE MultiParamTypeClasses #-}
|
||||
{-# LANGUAGE NoImplicitPrelude #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE RecordWildCards #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Week02.Validators
|
||||
( Auction (..)
|
||||
, StartParams (..), BidParams (..), CloseParams (..)
|
||||
, AuctionSchema
|
||||
, start, bid, close
|
||||
, endpoints
|
||||
, schemas
|
||||
, ensureKnownCurrencies
|
||||
, printJson
|
||||
, printSchemas
|
||||
, registeredKnownCurrencies
|
||||
, stage
|
||||
) where
|
||||
|
||||
import Control.Monad hiding (fmap)
|
||||
import Data.Aeson (ToJSON, FromJSON)
|
||||
import Data.List.NonEmpty (NonEmpty (..))
|
||||
import Data.Map as Map
|
||||
import Data.Text (pack, Text)
|
||||
import GHC.Generics (Generic)
|
||||
import Plutus.Contract hiding (when)
|
||||
import qualified PlutusTx as PlutusTx
|
||||
import PlutusTx.Prelude hiding (Semigroup(..), unless)
|
||||
import qualified PlutusTx.Prelude as Plutus
|
||||
import Ledger hiding (singleton)
|
||||
import Ledger.Constraints as Constraints
|
||||
import qualified Ledger.Scripts as Scripts
|
||||
import qualified Ledger.Typed.Scripts as Scripts
|
||||
import Ledger.Value as Value
|
||||
import Ledger.Ada as Ada
|
||||
import Playground.Contract (ensureKnownCurrencies, printSchemas, stage, printJson)
|
||||
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
|
||||
import Playground.Types (KnownCurrency (..))
|
||||
import Prelude (Semigroup (..))
|
||||
import Schema (ToSchema)
|
||||
import Text.Printf (printf)
|
||||
|
||||
data Auction = Auction
|
||||
{ aSeller :: !PubKeyHash
|
||||
, aDeadline :: !Slot
|
||||
, aMinBid :: !Integer
|
||||
, aCurrency :: !CurrencySymbol
|
||||
, aToken :: !TokenName
|
||||
} deriving (Show, Generic, ToJSON, FromJSON, ToSchema)
|
||||
|
||||
instance Eq Auction where
|
||||
{-# INLINABLE (==) #-}
|
||||
a == b = (aSeller a == aSeller b) &&
|
||||
(aDeadline a == aDeadline b) &&
|
||||
(aMinBid a == aMinBid b) &&
|
||||
(aCurrency a == aCurrency b) &&
|
||||
(aToken a == aToken b)
|
||||
|
||||
PlutusTx.unstableMakeIsData ''Auction
|
||||
PlutusTx.makeLift ''Auction
|
||||
|
||||
data Bid = Bid
|
||||
{ bBidder :: !PubKeyHash
|
||||
, bBid :: !Integer
|
||||
} deriving Show
|
||||
|
||||
instance Eq Bid where
|
||||
{-# INLINABLE (==) #-}
|
||||
b == c = (bBidder b == bBidder c) &&
|
||||
(bBid b == bBid c)
|
||||
|
||||
PlutusTx.unstableMakeIsData ''Bid
|
||||
PlutusTx.makeLift ''Bid
|
||||
|
||||
data AuctionAction = MkBid Bid | Close
|
||||
deriving Show
|
||||
|
||||
PlutusTx.unstableMakeIsData ''AuctionAction
|
||||
PlutusTx.makeLift ''AuctionAction
|
||||
|
||||
data AuctionDatum = AuctionDatum
|
||||
{ adAuction :: !Auction
|
||||
, adHighestBid :: !(Maybe Bid)
|
||||
} deriving Show
|
||||
|
||||
PlutusTx.unstableMakeIsData ''AuctionDatum
|
||||
PlutusTx.makeLift ''AuctionDatum
|
||||
|
||||
data Auctioning
|
||||
instance Scripts.ScriptType Auctioning where
|
||||
type instance RedeemerType Auctioning = AuctionAction
|
||||
type instance DatumType Auctioning = AuctionDatum
|
||||
|
||||
{-# INLINABLE minBid #-}
|
||||
minBid :: AuctionDatum -> Integer
|
||||
minBid AuctionDatum{..} = case adHighestBid of
|
||||
Nothing -> aMinBid adAuction
|
||||
Just Bid{..} -> bBid + 1
|
||||
|
||||
{-# INLINABLE mkAuctionValidator #-}
|
||||
mkAuctionValidator :: AuctionDatum -> AuctionAction -> ValidatorCtx -> Bool
|
||||
mkAuctionValidator ad redeemer ctx =
|
||||
traceIfFalse "wrong input value" correctInputValue &&
|
||||
case redeemer of
|
||||
MkBid b@Bid{..} ->
|
||||
traceIfFalse "bid too low" (sufficientBid bBid) &&
|
||||
traceIfFalse "wrong output datum" (correctBidOutputDatum b) &&
|
||||
traceIfFalse "wrong output value" (correctBidOutputValue bBid) &&
|
||||
traceIfFalse "wrong refund" correctBidRefund &&
|
||||
traceIfFalse "too late" correctBidSlotRange
|
||||
Close ->
|
||||
traceIfFalse "too early" correctCloseSlotRange &&
|
||||
case adHighestBid ad of
|
||||
Nothing ->
|
||||
traceIfFalse "expected seller to get token" (getsValue (aSeller auction) tokenValue)
|
||||
Just Bid{..} ->
|
||||
traceIfFalse "expected highest bidder to get token" (getsValue bBidder tokenValue) &&
|
||||
traceIfFalse "expected seller to get highest bid" (getsValue (aSeller auction) $ Ada.lovelaceValueOf bBid)
|
||||
|
||||
where
|
||||
info :: TxInfo
|
||||
info = valCtxTxInfo ctx
|
||||
|
||||
input :: TxInInfo
|
||||
input =
|
||||
let
|
||||
isScriptInput i = case txInInfoWitness i of
|
||||
Nothing -> False
|
||||
Just _ -> True
|
||||
xs = [i | i <- txInfoInputs info, isScriptInput i]
|
||||
in
|
||||
case xs of
|
||||
[i] -> i
|
||||
_ -> traceError "expected exactly one script input"
|
||||
|
||||
inVal :: Value
|
||||
inVal = txInInfoValue input
|
||||
|
||||
auction :: Auction
|
||||
auction = adAuction ad
|
||||
|
||||
tokenValue :: Value
|
||||
tokenValue = Value.singleton (aCurrency auction) (aToken auction) 1
|
||||
|
||||
correctInputValue :: Bool
|
||||
correctInputValue = inVal == case adHighestBid ad of
|
||||
Nothing -> tokenValue
|
||||
Just Bid{..} -> tokenValue Plutus.<> Ada.lovelaceValueOf bBid
|
||||
|
||||
sufficientBid :: Integer -> Bool
|
||||
sufficientBid amount = amount >= minBid ad
|
||||
|
||||
ownOutput :: TxOutInfo
|
||||
outputDatum :: AuctionDatum
|
||||
(ownOutput, outputDatum) = case getContinuingOutputs ctx of
|
||||
[o] -> case txOutType o of
|
||||
PayToPubKey -> traceError "wrong output type"
|
||||
PayToScript h -> case findDatum h info of
|
||||
Nothing -> traceError "datum not found"
|
||||
Just (Datum d) -> case PlutusTx.fromData d of
|
||||
Just ad' -> (o, ad')
|
||||
Nothing -> traceError "error decoding data"
|
||||
_ -> traceError "expected exactly one continuing output"
|
||||
|
||||
correctBidOutputDatum :: Bid -> Bool
|
||||
correctBidOutputDatum b = (adAuction outputDatum == auction) &&
|
||||
(adHighestBid outputDatum == Just b)
|
||||
|
||||
correctBidOutputValue :: Integer -> Bool
|
||||
correctBidOutputValue amount =
|
||||
txOutValue ownOutput == tokenValue Plutus.<> Ada.lovelaceValueOf amount
|
||||
|
||||
correctBidRefund :: Bool
|
||||
correctBidRefund = case adHighestBid ad of
|
||||
Nothing -> True
|
||||
Just Bid{..} ->
|
||||
let
|
||||
os = [ o
|
||||
| o <- txInfoOutputs info
|
||||
, txOutAddress o == PubKeyAddress bBidder
|
||||
]
|
||||
in
|
||||
case os of
|
||||
[o] -> txOutValue o == Ada.lovelaceValueOf bBid
|
||||
_ -> traceError "expected exactly one refund output"
|
||||
|
||||
correctBidSlotRange :: Bool
|
||||
correctBidSlotRange = to (aDeadline auction) `contains` txInfoValidRange info
|
||||
|
||||
correctCloseSlotRange :: Bool
|
||||
correctCloseSlotRange = from (aDeadline auction) `contains` txInfoValidRange info
|
||||
|
||||
getsValue :: PubKeyHash -> Value -> Bool
|
||||
getsValue h v =
|
||||
let
|
||||
[o] = [ o'
|
||||
| o' <- txInfoOutputs info
|
||||
, txOutValue o' == v
|
||||
]
|
||||
in
|
||||
txOutAddress o == PubKeyAddress h
|
||||
|
||||
auctionInstance :: Scripts.ScriptInstance Auctioning
|
||||
auctionInstance = Scripts.validator @Auctioning
|
||||
$$(PlutusTx.compile [|| mkAuctionValidator ||])
|
||||
$$(PlutusTx.compile [|| wrap ||])
|
||||
where
|
||||
wrap = Scripts.wrapValidator @AuctionDatum @AuctionAction
|
||||
|
||||
auctionValidator :: Validator
|
||||
auctionValidator = Scripts.validatorScript auctionInstance
|
||||
|
||||
auctionHash :: Ledger.ValidatorHash
|
||||
auctionHash = Scripts.validatorHash auctionValidator
|
||||
|
||||
auctionAddress :: Ledger.Address
|
||||
auctionAddress = ScriptAddress auctionHash
|
||||
|
||||
data StartParams = StartParams
|
||||
{ spDeadline :: !Slot
|
||||
, spMinBid :: !Integer
|
||||
, spCurrency :: !CurrencySymbol
|
||||
, spToken :: !TokenName
|
||||
} deriving (Generic, ToJSON, FromJSON, ToSchema)
|
||||
|
||||
data BidParams = BidParams
|
||||
{ bpCurrency :: !CurrencySymbol
|
||||
, bpToken :: !TokenName
|
||||
, bpBid :: !Integer
|
||||
} deriving (Generic, ToJSON, FromJSON, ToSchema)
|
||||
|
||||
data CloseParams = CloseParams
|
||||
{ cpCurrency :: !CurrencySymbol
|
||||
, cpToken :: !TokenName
|
||||
} deriving (Generic, ToJSON, FromJSON, ToSchema)
|
||||
|
||||
type AuctionSchema =
|
||||
BlockchainActions
|
||||
.\/ Endpoint "start" StartParams
|
||||
.\/ Endpoint "bid" BidParams
|
||||
.\/ Endpoint "close" CloseParams
|
||||
|
||||
start :: (HasBlockchainActions s, AsContractError e) => StartParams -> Contract w s e ()
|
||||
start StartParams{..} = do
|
||||
pkh <- pubKeyHash <$> ownPubKey
|
||||
let a = Auction
|
||||
{ aSeller = pkh
|
||||
, aDeadline = spDeadline
|
||||
, aMinBid = spMinBid
|
||||
, aCurrency = spCurrency
|
||||
, aToken = spToken
|
||||
}
|
||||
d = AuctionDatum
|
||||
{ adAuction = a
|
||||
, adHighestBid = Nothing
|
||||
}
|
||||
v = Value.singleton spCurrency spToken 1
|
||||
tx = mustPayToTheScript d v
|
||||
ledgerTx <- submitTxConstraints auctionInstance tx
|
||||
void $ awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ printf "started auction %s for token %s" (show a) (show v)
|
||||
|
||||
bid :: forall w s. HasBlockchainActions s => BidParams -> Contract w s Text ()
|
||||
bid BidParams{..} = do
|
||||
(oref, o, d@AuctionDatum{..}) <- findAuction bpCurrency bpToken
|
||||
logInfo @String $ printf "found auction utxo with datum %s" (show d)
|
||||
|
||||
when (bpBid < minBid d) $
|
||||
throwError $ pack $ printf "bid lower than minimal bid %d" (minBid d)
|
||||
pkh <- pubKeyHash <$> ownPubKey
|
||||
let b = Bid {bBidder = pkh, bBid = bpBid}
|
||||
d' = d {adHighestBid = Just b}
|
||||
v = Value.singleton bpCurrency bpToken 1 <> Ada.lovelaceValueOf bpBid
|
||||
r = Redeemer $ PlutusTx.toData $ MkBid b
|
||||
|
||||
lookups = Constraints.scriptInstanceLookups auctionInstance <>
|
||||
Constraints.otherScript auctionValidator <>
|
||||
Constraints.unspentOutputs (Map.singleton oref o)
|
||||
tx = case adHighestBid of
|
||||
Nothing -> mustPayToTheScript d' v <>
|
||||
mustValidateIn (to $ aDeadline adAuction) <>
|
||||
mustSpendScriptOutput oref r
|
||||
Just Bid{..} -> mustPayToTheScript d' v <>
|
||||
mustPayToPubKey bBidder (Ada.lovelaceValueOf bBid) <>
|
||||
mustValidateIn (to $ aDeadline adAuction) <>
|
||||
mustSpendScriptOutput oref r
|
||||
ledgerTx <- submitTxConstraintsWith lookups tx
|
||||
void $ awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ printf "made bid of %d lovelace in auction %s for token (%s, %s)"
|
||||
bpBid
|
||||
(show adAuction)
|
||||
(show bpCurrency)
|
||||
(show bpToken)
|
||||
|
||||
close :: forall w s. HasBlockchainActions s => CloseParams -> Contract w s Text ()
|
||||
close CloseParams{..} = do
|
||||
(oref, o, d@AuctionDatum{..}) <- findAuction cpCurrency cpToken
|
||||
logInfo @String $ printf "found auction utxo with datum %s" (show d)
|
||||
|
||||
let t = Value.singleton cpCurrency cpToken 1
|
||||
r = Redeemer $ PlutusTx.toData Close
|
||||
seller = aSeller adAuction
|
||||
|
||||
lookups = Constraints.scriptInstanceLookups auctionInstance <>
|
||||
Constraints.otherScript auctionValidator <>
|
||||
Constraints.unspentOutputs (Map.singleton oref o)
|
||||
tx = case adHighestBid of
|
||||
Nothing -> mustPayToPubKey seller t <>
|
||||
mustValidateIn (from $ aDeadline adAuction) <>
|
||||
mustSpendScriptOutput oref r
|
||||
Just Bid{..} -> mustPayToPubKey bBidder t <>
|
||||
mustPayToPubKey seller (Ada.lovelaceValueOf bBid) <>
|
||||
mustValidateIn (from $ aDeadline adAuction) <>
|
||||
mustSpendScriptOutput oref r
|
||||
ledgerTx <- submitTxConstraintsWith lookups tx
|
||||
void $ awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ printf "closed auction %s for token (%s, %s)"
|
||||
(show adAuction)
|
||||
(show cpCurrency)
|
||||
(show cpToken)
|
||||
|
||||
findAuction :: HasBlockchainActions s
|
||||
=> CurrencySymbol
|
||||
-> TokenName
|
||||
-> Contract w s Text (TxOutRef, TxOutTx, AuctionDatum)
|
||||
findAuction cs tn = do
|
||||
utxos <- utxoAt $ ScriptAddress auctionHash
|
||||
let xs = [ (oref, o)
|
||||
| (oref, o) <- Map.toList utxos
|
||||
, Value.valueOf (txOutValue $ txOutTxOut o) cs tn == 1
|
||||
]
|
||||
case xs of
|
||||
[(oref, o)] -> case txOutType $ txOutTxOut o of
|
||||
PayToPubKey -> throwError "unexpected out type"
|
||||
PayToScript h -> case Map.lookup h $ txData $ txOutTxTx o of
|
||||
Nothing -> throwError "datum not found"
|
||||
Just (Datum e) -> case PlutusTx.fromData e of
|
||||
Nothing -> throwError "datum has wrong type"
|
||||
Just d@AuctionDatum{..}
|
||||
| aCurrency adAuction == cs && aToken adAuction == tn -> return (oref, o, d)
|
||||
| otherwise -> throwError "auction token missmatch"
|
||||
_ -> throwError "auction utxo not found"
|
||||
|
||||
endpoints :: Contract () AuctionSchema Text ()
|
||||
endpoints = (start' `select` bid' `select` close') >> endpoints
|
||||
where
|
||||
start' = endpoint @"start" >>= start
|
||||
bid' = endpoint @"bid" >>= bid
|
||||
close' = endpoint @"close" >>= close
|
||||
|
||||
mkSchemaDefinitions ''AuctionSchema
|
||||
|
||||
myToken :: KnownCurrency
|
||||
myToken = KnownCurrency (ValidatorHash "f") "Token" (TokenName "T" :| [])
|
||||
|
||||
mkKnownCurrencies ['myToken]
|
Loading…
Reference in a new issue