Add returns for take and repayDebt

src/ERC20Pool.sol

@@ -213,7 +213,7 @@ contract ERC20Pool is FlashloanablePool, IERC20Pool {
  uint256 collateralAmountToPull_,
  address collateralReceiver_,
  uint256 limitIndex_
- ) external nonReentrant {
+ ) external nonReentrant returns (uint256 amountRepaid_) {
  PoolState memory poolState = _accruePoolInterest();
 
  // ensure accounting is performed using the appropriate token scale
@@ -273,6 +273,8 @@ contract ERC20Pool is FlashloanablePool, IERC20Pool {
  // move collateral from pool to address specified as collateral receiver
  _transferCollateral(collateralReceiver_, collateralAmountToPull_);
  }
+
+ amountRepaid_ = result.quoteTokenToRepay;
  }
 
  /*********************************/
@@ -396,7 +398,7 @@ contract ERC20Pool is FlashloanablePool, IERC20Pool {
  uint256 maxAmount_,
  address callee_,
  bytes calldata data_
- ) external override nonReentrant {
+ ) external override nonReentrant returns (uint256 collateralTaken_) {
  PoolState memory poolState = _accruePoolInterest();
 
  uint256 collateralTokenScale = _getArgUint256(COLLATERAL_SCALE);
@@ -430,6 +432,8 @@ contract ERC20Pool is FlashloanablePool, IERC20Pool {
  }
 
  _transferQuoteTokenFrom(msg.sender, result.quoteTokenAmount);
+
+ collateralTaken_ = result.collateralAmount;
  }
 
  /**

src/ERC721Pool.sol

@@ -229,7 +229,7 @@ contract ERC721Pool is FlashloanablePool, IERC721Pool {
  uint256 noOfNFTsToPull_,
  address collateralReceiver_,
  uint256 limitIndex_
- ) external nonReentrant {
+ ) external nonReentrant returns (uint256 amountRepaid_) {
  PoolState memory poolState = _accruePoolInterest();
 
  // ensure accounting is performed using the appropriate token scale
@@ -290,6 +290,8 @@ contract ERC721Pool is FlashloanablePool, IERC721Pool {
  // move collateral from pool to address specified as collateral receiver
  _transferFromPoolToAddress(collateralReceiver_, borrowerTokenIds[msg.sender], noOfNFTsToPull_);
  }
+
+ amountRepaid_ = result.quoteTokenToRepay;
  }
 
  /*********************************/
@@ -452,7 +454,7 @@ contract ERC721Pool is FlashloanablePool, IERC721Pool {
  uint256 collateral_,
  address callee_,
  bytes calldata data_
- ) external override nonReentrant {
+ ) external override nonReentrant returns (uint256 collateralTaken_) {
  PoolState memory poolState = _accruePoolInterest();
 
  TakeResult memory result = TakerActions.take(
@@ -493,6 +495,8 @@ contract ERC721Pool is FlashloanablePool, IERC721Pool {
 
  // transfer from pool to borrower the excess of quote tokens after rounding collateral auctioned
  if (result.excessQuoteToken != 0) _transferQuoteToken(borrowerAddress_, result.excessQuoteToken);
+
+ collateralTaken_ = result.collateralAmount / 1e18;
  }
 
  /**

src/interfaces/pool/commons/IPoolTakerActions.sol

@@ -27,13 +27,14 @@ interface IPoolTakerActions {
  * @param data_ If provided, take will assume the callee implements `IERC*Taker`. Take will send collateral to 
  * callee before passing this data to `IERC*Taker.atomicSwapCallback`. If not provided, 
  * the callback function will not be invoked.
+ * @return collateralTaken_ Amount of collateral taken from the auction (`WAD` precision for `ERC20` pools, max number of `NFT`s for `ERC721` pools).
  */
  function take(
  address borrowerAddress_,
  uint256 maxAmount_,
  address callee_,
  bytes calldata data_
- ) external;
+ ) external returns (uint256 collateralTaken_);
 
  /***********************/
  /*** Reserve Auction ***/

src/interfaces/pool/erc20/IERC20PoolBorrowerActions.sol

@@ -30,12 +30,13 @@ interface IERC20PoolBorrowerActions {
  * @param collateralAmountToPull_ The max amount of collateral to be puled from the pool (`WAD` precision).
  * @param recipient_ The address to receive amount of pulled collateral.
  * @param limitIndex_ Ensures `LUP` has not moved far from state when borrower pulls collateral.
+ * @return amountRepaid_ The amount of quote token repaid (`WAD` precision).
  */
  function repayDebt(
  address borrowerAddress_,
  uint256 maxQuoteTokenAmountToRepay_,
  uint256 collateralAmountToPull_,
  address recipient_,
  uint256 limitIndex_
- ) external;
+ ) external returns (uint256 amountRepaid_);
 }

src/interfaces/pool/erc721/IERC721PoolBorrowerActions.sol

@@ -30,12 +30,13 @@ interface IERC721PoolBorrowerActions {
  * @param noOfNFTsToPull_ The integer number of `NFT` collateral to be puled from the pool.
  * @param recipient_ The address to receive amount of pulled collateral.
  * @param limitIndex_ Ensures `LUP` has not moved far from state when borrower pulls collateral.
+ * @return amountRepaid_ The amount of quote token repaid (`WAD` precision).
  */
  function repayDebt(
  address borrowerAddress_,
  uint256 maxQuoteTokenAmountToRepay_,
  uint256 noOfNFTsToPull_,
  address recipient_,
  uint256 limitIndex_
- ) external;
+ ) external returns (uint256 amountRepaid_);
 }