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

/**
 * Action that removes liquidity from a G-UNI pool and burns G-UNI LP tokens
 *
 * @category GUni
*/
export class GUniWithdraw extends Action {
  /**
    * @param pool address of G-UNI pool to remove liquidity from
    * @param burnAmount The number of G-UNI tokens to burn
    * @param amount0Min Minimum amount of token0 received after burn (slippage protection)
    * @param amount1Min Minimum amount of token1 received after burn (slippage protection)
    * @param to The account to receive the underlying amounts of token0 and token1
    * @param from Account from which to pull G-Uni LP tokens
    */
  constructor(pool:EthAddress, burnAmount:uint256, amount0Min:uint256, amount1Min:uint256, to:EthAddress, from:EthAddress) {
    requireAddress(to);
    super(
      'GUniWithdraw',
      getAddr('GUniWithdraw'),
      ['address', 'uint256', 'uint256', 'uint256', 'address', 'address'],
      [pool, burnAmount, amount0Min, amount1Min, to, from],
    );
    this.mappableArgs = [
      this.args[1],
    ];
  }

  async getAssetsToApprove() {
    return [{ asset: this.args[0], owner: this.args[5] }];
  }
}