Function finalizeCommitInput

src/btc/btc-p2tr-commit-data.ts:9–27

(
  psbt: bitcoin.Psbt,
  inputIndex: number,
  tapLeafScript: TapLeafScript
)

import {witnessStackToScriptWitness} from "./witness_stack_to_script_witness";

export function finalizeCommitInput(
  psbt: bitcoin.Psbt,
  inputIndex: number,
  tapLeafScript: TapLeafScript
) {
  function getNoteFinalScripts(index: number, input: any) {
    const scriptSolution = [input.tapScriptSig[0].signature];
    const witness = scriptSolution
      .concat(tapLeafScript.script)
      .concat(tapLeafScript.controlBlock);

    const finalScriptWitness = witnessStackToScriptWitness(witness);

    return {
      finalScriptWitness,
    };
  }
  psbt.finalizeInput(inputIndex, getNoteFinalScripts);
}

// Build a P2WSH transaction to generate NOTE information
// According to the protocol, the first input of the transaction is the NOTE information protocol, and the unlock script is the NOTE script hash