claudiomaradonna/plutus-pioneer-program
1
0
Fork 0
mirror of https://github.com/FiloSpaTeam/plutus-pioneer-program.git synced 2024-11-25 08:12:00 +01:00
Code Issues Projects Releases Packages Wiki Activity

started with code for week 2

Browse source
This commit is contained in:
Lars Brünjes 2021-04-09 12:21:14 +02:00
parent 9571b91d61
commit ae07c00ad7
7 changed files with 755 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
code/week02/.devcontainer/devcontainer.json Normal file
View file

@ -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
View file

@ -0,0 +1 @@
dist-newstyle/

201
code/week02/LICENSE Normal file
View 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
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

136
code/week02/cabal.project Normal file
View 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
View 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
View 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
View 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]