Add Inscriboor commit reveal signer

src/adapters/extension-inscription.js

@@ -0,0 +1,70 @@
+import { Script, Tap, Tx } from '@cmdcode/tapscript';
+import { getVin, getVout } from '../upstream/primitives.js';
+import { InscriptionAdapter, envelope, POSTAGE, FEE } from './inscription.js';
+import { NETWORK } from './wallet.js';
+
+const signingTx = tx => ({
+  hex: Tx.encode(tx).hex,
+  prevouts: tx.vin.map(input => ({
+    value: Number(input.prevout.value),
+    scriptPubKey: input.prevout.scriptPubKey,
+  })),
+});
+
+export async function inscribeWithProvider(chain, wallet, value, parentId = null, metadata = undefined, options = {}) {
+  const adapter = new InscriptionAdapter(chain, wallet);
+  const { coin, parent, reinscribe, ...payload } = adapter.prepare(value, parentId, metadata, options);
+  const carried = parent ?? reinscribe;
+  const carriedItem = reinscribe?.inscriptions.find(item => item.id === options.reinscribe);
+  const pointer = carriedItem ? chain.satLocation(carriedItem.sat).offset : options.pointer ?? (parent ? parent.value : undefined);
+  const script = envelope(wallet.pubkey, payload, parentId, metadata, { ...options, pointer });
+  const leaf = Tap.encodeScript(script);
+  const [tapkey, control] = Tap.getPubKey(wallet.pubkey, { target: leaf });
+
+  const commit = Tx.create({
+    vin: [getVin(coin.txid, coin.vout, coin.value, coin.scriptPubKey)],
+    vout: [
+      getVout(POSTAGE + FEE, ['OP_1', tapkey]),
+      getVout(coin.value - POSTAGE - 2 * FEE, wallet.script),
+    ],
+  });
+  const commitId = Tx.util.getTxid(commit);
+  const reveal = Tx.create({
+    vin: [
+      ...(carried ? [getVin(carried.txid, carried.vout, carried.value, carried.scriptPubKey)] : []),
+      getVin(commitId, 0, POSTAGE + FEE, ['OP_1', tapkey]),
+    ],
+    vout: [
+      ...(carried ? [getVout(carried.value, wallet.script)] : []),
+      getVout(POSTAGE, wallet.script),
+    ],
+  });
+  const revealInput = carried ? 1 : 0;
+  const signatures = await wallet.signInscription({
+    network: NETWORK,
+    commit: signingTx(commit),
+    reveal: { ...signingTx(reveal), scriptInput: revealInput, leaf },
+    intent: {
+      contentType: payload.contentType,
+      size: payload.bytes.length,
+      metadata: metadata !== undefined,
+      metaprotocol: options.metaprotocol ?? null,
+      parent: parentId,
+      delegate: options.delegate ?? null,
+      pointer: pointer ?? 'automatic',
+      reinscribe: options.reinscribe ?? null,
+      postage: POSTAGE,
+      fees: FEE * 2,
+    },
+  });
+
+  commit.vin[0].witness = [signatures.commit];
+  reveal.vin[revealInput].witness = [signatures.revealScript, Script.encode(script, false).hex, control];
+  if (carried) {
+    if (!signatures.revealKey) throw new Error('Inscriboor did not return the carried-input signature.');
+    reveal.vin[0].witness = [signatures.revealKey];
+  }
+
+  chain.submitPackage([Tx.encode(commit).hex, Tx.encode(reveal).hex]);
+  return `${Tx.util.getTxid(reveal)}i0`;
+}