64 lines
1.5 KiB
TypeScript
64 lines
1.5 KiB
TypeScript
import {
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Blockfrost,
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Constr,
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Data,
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Lucid,
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SpendingValidator,
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TxHash,
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fromHex,
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toHex,
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utf8ToHex
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} from "https://deno.land/x/lucid@0.8.3/mod.ts";
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import * as cbor from "https://deno.land/x/cbor@v1.4.1/index.js";
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const lucid = await Lucid.new(
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new Blockfrost(
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"https://cardano-preview.blockfrost.io/api/v0",
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Deno.env.get('BLOCKFROST_API_KEY'),
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),
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"Preview",
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);
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lucid.selectWalletFromPrivateKey(await Deno.readTextFile("./key.sk"));
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const validator = await readValidator("./assets/hello_world/spend/script.cbor");
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const utxo = { txHash: Deno.args[0], outputIndex: 0 };
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const redeemer = Data.to(new Constr(0, [ utf8ToHex("Hello, World!")]) );
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const txUnlock = await unlock(utxo, { from: validator, using: redeemer });
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await lucid.awaitTx(txUnlock);
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console.log(`1 ADA recovered from the contract
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Tx ID: ${txUnlock}
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Redeemer: ${redeemer}
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`);
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// --- Supporting functions
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async function unlock(ref, { from, using }): Promise<TxHash> {
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const [utxo] = await lucid.utxosByOutRef([ref]);
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const tx = await lucid
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.newTx()
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.collectFrom([utxo], using)
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.addSigner(await lucid.wallet.address())
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.attachSpendingValidator(from)
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.complete();
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const signedTx = await tx
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.sign()
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.complete();
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return signedTx.submit();
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}
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async function readValidator(filepath: String): Promise<SpendingValidator> {
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return {
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type: "PlutusV2",
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script: toHex(cbor.encode(fromHex(await Deno.readTextFile(filepath)))),
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};
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}
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