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swap-assets.sh
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#!/bin/sh
# Variables
tmpDir="/tmp/cardano-swaps/"
# Make the tmpDir if it doesn't already exist.
mkdir -p $tmpDir
swapAddr1="addr_test1zqql5djxthlrdcnvy87m7uswf0d0es9cdw6nvl72gcqj743ualkqngnmdz2w9mv60zuucq0sswtn6lq2lwxwez76x0aqv7yg2s"
swapDatumFile1="${tmpDir}swapDatum1.json"
swapRedeemerFile="${tmpDir}oneWaySpendingRedeemer.json"
# The reference scripts are permanently locked in the swap address without a staking credential!
# You can use the `cardano-swaps query personal-address` command to see them.
spendingScriptPreprodTestnetRef="9fecc1d2cf99088facad02aeccbedb6a4f783965dc6c02bd04dc8b348e9a0858#0"
spendingScriptSize=4842
# Create the Swap redeemer.
echo "Creating the spending redeemer..."
cardano-swaps spending-redeemers one-way \
--swap \
--out-file $swapRedeemerFile
# Create the swap datum.
echo "Creating the swap datum..."
cardano-swaps datums one-way \
--ask-asset lovelace \
--offer-asset c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31 \
--offer-price '1000000 / 1' \
--input-swap-ref 841f95b65531a8bfe076336a544b62466057848e039ea31e519e2c852add4090#0 \
--out-file $swapDatumFile1
# Helper beacon variables.
echo "Calculating the beacon names..."
beaconPolicyId1=$(cardano-swaps beacon-info one-way policy-id \
--stdout)
pairBeaconName1=$(cardano-swaps beacon-info one-way pair-beacon \
--ask-asset lovelace \
--offer-asset c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31 \
--stdout)
offerBeaconName1=$(cardano-swaps beacon-info one-way offer-beacon \
--offer-asset c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31 \
--stdout)
askBeaconName1=$(cardano-swaps beacon-info one-way ask-beacon \
--ask-asset lovelace \
--stdout)
pairBeacon1="${beaconPolicyId1}.${pairBeaconName1}"
offerBeacon1="${beaconPolicyId1}.${offerBeaconName1}"
askBeacon1="${beaconPolicyId1}.${askBeaconName1}"
# Create the transaction.
echo "Exporting the current protocol parameters..."
cardano-swaps query protocol-params \
--testnet \
--out-file "${tmpDir}protocol.json"
initial_change=$((8976772040-5000000-3000000))
echo "Building the initial transaction..."
cardano-cli conway transaction build-raw \
--tx-in 07b2177d87a3e1bcd41548bcf2dca24038dbf09865fae80bf0b511229bf7f2df#1 \
--tx-in 841f95b65531a8bfe076336a544b62466057848e039ea31e519e2c852add4090#0 \
--spending-tx-in-reference $spendingScriptPreprodTestnetRef \
--spending-plutus-script-v2 \
--spending-reference-tx-in-inline-datum-present \
--spending-reference-tx-in-redeemer-file $swapRedeemerFile \
--spending-reference-tx-in-execution-units "(0,0)" \
--tx-out "$(cat $HOME/wallets/02.addr) + 3000000 lovelace + 5 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out "${swapAddr1} + 8000000 lovelace + 1 ${pairBeacon1} + 1 ${offerBeacon1} + 1 ${askBeacon1} + 3 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out-inline-datum-file $swapDatumFile1 \
--tx-out "$(cat $HOME/wallets/02.addr) + ${initial_change} lovelace" \
--tx-in-collateral 11ed603b92e6164c6bb0c83e0f4d54a954976db7c39e2a82d3cbf70f098da1e0#0 \
--tx-total-collateral 21000000 \
--tx-out-return-collateral "$(cat $HOME/wallets/02.addr) 21000000 lovelace" \
--protocol-params-file "${tmpDir}protocol.json" \
--fee 5000000 \
--out-file "${tmpDir}tx.body"
echo "Getting the execution units estimations..."
exec_units=$(cardano-swaps evaluate-tx \
--testnet \
--tx-file "${tmpDir}tx.body")
# MAKE SURE THE INDEXES MATCH THE LEXICOGRAPHICAL ORDERING FOR INPUTS AND POLICY IDS.
# You can use `cardano-cli debug transaction view --tx-file "${tmpDir}tx.body` to view the prior
# transaction with everything in the correct order.
spend_0_mem=$(echo $exec_units | jq '.result | .[] | select(.validator.purpose=="spend" and .validator.index==0) | .budget.memory' )
spend_0_steps=$(echo $exec_units | jq '.result | .[] | select(.validator.purpose=="spend" and .validator.index==0) | .budget.cpu' )
echo "Rebuilding the transaction with proper execution budgets..."
cardano-cli conway transaction build-raw \
--tx-in 07b2177d87a3e1bcd41548bcf2dca24038dbf09865fae80bf0b511229bf7f2df#1 \
--tx-in 841f95b65531a8bfe076336a544b62466057848e039ea31e519e2c852add4090#0 \
--spending-tx-in-reference $spendingScriptPreprodTestnetRef \
--spending-plutus-script-v2 \
--spending-reference-tx-in-inline-datum-present \
--spending-reference-tx-in-redeemer-file $swapRedeemerFile \
--spending-reference-tx-in-execution-units "(${spend_0_steps},${spend_0_mem})" \
--tx-out "$(cat $HOME/wallets/02.addr) + 3000000 lovelace + 5 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out "${swapAddr1} + 8000000 lovelace + 1 ${pairBeacon1} + 1 ${offerBeacon1} + 1 ${askBeacon1} + 3 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out-inline-datum-file $swapDatumFile1 \
--tx-out "$(cat $HOME/wallets/02.addr) + ${initial_change} lovelace" \
--tx-in-collateral 11ed603b92e6164c6bb0c83e0f4d54a954976db7c39e2a82d3cbf70f098da1e0#0 \
--tx-total-collateral 21000000 \
--tx-out-return-collateral "$(cat $HOME/wallets/02.addr) 21000000 lovelace" \
--protocol-params-file "${tmpDir}protocol.json" \
--fee 5000000 \
--out-file "${tmpDir}tx.body"
echo "Calculating the required fee..."
calculated_fee=$(cardano-cli conway transaction calculate-min-fee \
--tx-body-file "${tmpDir}tx.body" \
--protocol-params-file "${tmpDir}protocol.json" \
--reference-script-size $((spendingScriptSize)) \
--witness-count 2 | cut -d' ' -f1)
req_fee=$((calculated_fee+50000)) # Add 0.05 ADA to be safe since the fee must still be updated.
req_collateral=$(printf %.0f $(echo "${req_fee}*1.5" | bc))
echo "Rebuilding the transaction with the required fee..."
cardano-cli conway transaction build-raw \
--tx-in 07b2177d87a3e1bcd41548bcf2dca24038dbf09865fae80bf0b511229bf7f2df#1 \
--tx-in 841f95b65531a8bfe076336a544b62466057848e039ea31e519e2c852add4090#0 \
--spending-tx-in-reference $spendingScriptPreprodTestnetRef \
--spending-plutus-script-v2 \
--spending-reference-tx-in-inline-datum-present \
--spending-reference-tx-in-redeemer-file $swapRedeemerFile \
--spending-reference-tx-in-execution-units "(${spend_0_steps},${spend_0_mem})" \
--tx-out "$(cat $HOME/wallets/02.addr) + 3000000 lovelace + 5 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out "${swapAddr1} + 8000000 lovelace + 1 ${pairBeacon1} + 1 ${offerBeacon1} + 1 ${askBeacon1} + 3 c0f8644a01a6bf5db02f4afe30d604975e63dd274f1098a1738e561d.54657374546f6b656e31" \
--tx-out-inline-datum-file $swapDatumFile1 \
--tx-out "$(cat $HOME/wallets/02.addr) + $((initial_change-req_fee)) lovelace" \
--tx-in-collateral 11ed603b92e6164c6bb0c83e0f4d54a954976db7c39e2a82d3cbf70f098da1e0#0 \
--tx-total-collateral $req_collateral \
--tx-out-return-collateral "$(cat $HOME/wallets/02.addr) $((21000000-$req_collateral)) lovelace" \
--protocol-params-file "${tmpDir}protocol.json" \
--fee "$req_fee" \
--out-file "${tmpDir}tx.body"
echo "Signing the transaction..."
cardano-cli conway transaction sign \
--tx-body-file "${tmpDir}tx.body" \
--signing-key-file $HOME/wallets/02.skey \
--testnet-magic 1 \
--out-file "${tmpDir}tx.signed"
echo "Submitting the transaction..."
cardano-swaps submit \
--testnet \
--tx-file "${tmpDir}tx.signed"
# Add a newline after the submission response.
echo ""