import * as anchor from "@project-serum/anchor";
import { getAssociatedTokenAddress } from "@solana/spl-token";
import {
  TOKEN_METADATA_PROGRAM_ID,
  STRIKR_COLLECTION_MINT,
  STRIKR_TREASURY,
} from "../../constants";
import { getStrikr } from "../../utils";
import { requestComputeUnits } from "../../actions/request-compute-units";
import { Response } from "../../types/types";

/**
 * Fill the put option request as a seller.
 * @param provider Anchor provider
 * @param optionKey Option key representing the option to be filled
 * @returns Promise resolving to the transaction signature
 */
export const floorFillPutOption = async (
  provider: anchor.AnchorProvider,
  optionKey: anchor.web3.PublicKey
) : Promise<Response> => {
  const strikr = getStrikr(provider);
  const transaction = new anchor.web3.Transaction();

  // Request additional compute units and attach the instruction
  const computeUnitsIx = requestComputeUnits(provider, 400_000, 0);

  transaction.add(computeUnitsIx);

  const sellerPositionNftMintKeypair = new anchor.web3.Keypair();
  const sellerPositionNftMint = sellerPositionNftMintKeypair.publicKey;

  // Signer's position NFT ATA
  let sellerPositionNftTokenAccount = await getAssociatedTokenAddress(
    sellerPositionNftMint,
    provider.wallet.publicKey,
    true
  );

  transaction.add(
    await strikr.methods
      .floorFillPutOption()
      .accounts({
        signer: provider.wallet.publicKey,
        optionKey: optionKey,
        sellerPositionNftMint: sellerPositionNftMint,
        sellerPositionNftTokenAccount: sellerPositionNftTokenAccount,
        strikrCollectionMint: STRIKR_COLLECTION_MINT,
        strikrTreasury: STRIKR_TREASURY,
        tokenMetadataProgram: TOKEN_METADATA_PROGRAM_ID,
      })
      .instruction()
  );

  const signature = await provider.sendAndConfirm(transaction, [
    sellerPositionNftMintKeypair,
  ]);

  return {
    signature,
    optionKey: optionKey,
  };
};