import { Action } from '../../Action';
import { getAddr } from '../../addresses';
import { EthAddress, uint256 } from '../../types';
import { requireAddress } from '../../utils/general';

/**
 * LidoUnwrapAction - Unwraps WStEth into StEth
 *
 * @category Lido
 */
export class LidoUnwrapAction extends Action {
  /**
   * @param amount amount of WStEth to pull and Unwrap
   * @param from WstEth will be taken from this address
   * @param to stETH will be sent to this address
   */
  constructor(amount:uint256, from:EthAddress, to:EthAddress) {
    requireAddress(to);
    super('LidoUnwrap', getAddr('LidoUnwrap'), ['uint256', 'address', 'address'], [amount, from, to]);
  }

  async getAssetsToApprove() {
    return [{ asset: '0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0', owner: this.args[1] }];
  }
}