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{
"name": "Plutus Starter Project",
"image": "plutus-devcontainer:latest",
"remoteUser": "plutus",
"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=/home/plutus/.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"
],
}

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dist-newstyle/

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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
quickcheck-dynamic
tag: 0c3c310cab61dbff8cbc1998a3678b367be6815a
-- 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

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cradle:
cabal:
- path: "./src"
component: "lib:plutus-pioneer-program-week06"

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code/week06/plutus-pioneer-program-week06.cabal Normal file
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Cabal-Version: 2.4
Name: plutus-pioneer-program-week06
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: Week05.Oracle
build-depends: aeson
, base ^>=4.14.1.0
, containers
, freer-extras
, playground-common
, plutus-contract
, plutus-ledger
, plutus-ledger-api
, 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

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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
module Week05.Oracle where
import Control.Monad hiding (fmap)
import qualified Data.Map as Map
import Data.Text (Text)
import Data.Void (Void)
import Plutus.Contract as Contract hiding (when)
import Plutus.Trace.Emulator as Emulator
import qualified PlutusTx
import PlutusTx.Prelude hiding (Semigroup(..), unless)
import Ledger hiding (singleton)
import Ledger.Constraints as Constraints
import qualified Ledger.Typed.Scripts as Scripts
import Ledger.Value as Value
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage, ToSchema)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..))
import Text.Printf (printf)
import Wallet.Emulator.Wallet
{-# INLINABLE mkPolicy #-}
mkPolicy :: TxOutRef -> TokenName -> ScriptContext -> Bool
mkPolicy oref tn ctx = traceIfFalse "UTxO not consumed" hasUTxO &&
traceIfFalse "wrong amount minted" checkMintedAmount
where
info :: TxInfo
info = scriptContextTxInfo ctx
hasUTxO :: Bool
hasUTxO = any (\i -> txInInfoOutRef i == oref) $ txInfoInputs info
checkMintedAmount :: Bool
checkMintedAmount = case flattenValue (txInfoForge info) of
[(cs, tn', amt)] -> cs == ownCurrencySymbol ctx && tn' == tn && amt == 1
_ -> False
policy :: TxOutRef -> TokenName -> Scripts.MonetaryPolicy
policy oref tn = mkMonetaryPolicyScript $
$$(PlutusTx.compile [|| \oref' tn' -> Scripts.wrapMonetaryPolicy $ mkPolicy oref' tn' ||])
`PlutusTx.applyCode`
PlutusTx.liftCode oref
`PlutusTx.applyCode`
PlutusTx.liftCode tn
curSymbol :: TxOutRef -> TokenName -> CurrencySymbol
curSymbol oref tn = scriptCurrencySymbol $ policy oref tn
type NFTSchema =
BlockchainActions
.\/ Endpoint "mint" TokenName
mint :: TokenName -> Contract w NFTSchema Text ()
mint tn = do
pk <- Contract.ownPubKey
utxos <- utxoAt (pubKeyAddress pk)
case Map.keys utxos of
[] -> Contract.logError @String "no utxo found"
oref : _ -> do
let val = Value.singleton (curSymbol oref tn) tn 1
lookups = Constraints.monetaryPolicy (policy oref tn) <> Constraints.unspentOutputs utxos
tx = Constraints.mustForgeValue val <> Constraints.mustSpendPubKeyOutput oref
ledgerTx <- submitTxConstraintsWith @Void lookups tx
void $ awaitTxConfirmed $ txId ledgerTx
Contract.logInfo @String $ printf "forged %s" (show val)
endpoints :: Contract () NFTSchema Text ()
endpoints = mint' >> endpoints
where
mint' = endpoint @"mint" >>= mint
mkSchemaDefinitions ''NFTSchema
mkKnownCurrencies []
test :: IO ()
test = runEmulatorTraceIO $ do
let tn = "ABC"
h1 <- activateContractWallet (Wallet 1) endpoints
h2 <- activateContractWallet (Wallet 2) endpoints
callEndpoint @"mint" h1 tn
callEndpoint @"mint" h2 tn
void $ Emulator.waitNSlots 1