118 lines
3.3 KiB
Solidity
118 lines
3.3 KiB
Solidity
/*
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Copyright 2020 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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import {IDVM} from "../DODOVendingMachine/intf/IDVM.sol";
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import {IERC20} from "../intf/IERC20.sol";
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import {SafeERC20} from "../lib/SafeERC20.sol";
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import {SafeMath} from "../lib/SafeMath.sol";
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import {DecimalMath} from "../lib/DecimalMath.sol";
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contract DVMProxy {
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using SafeMath for uint256;
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using SafeERC20 for IERC20;
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//TODO: dodoSwap
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//TODO: externalSwap
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//TODO: createDVM
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//TODO: addLiquidityToDVM
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//TODO: removeLiquidityToDVM（待定）
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//TODO: createDPP
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//TODO: resetDPP
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//TODO: addLiquidityToClassical
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//TODO: removeLiquidityToClassical
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function sellBaseOnDVM(
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address DVMAddress,
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address to,
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uint256 baseAmount,
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uint256 minReceive
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) public returns (uint256 receiveAmount) {
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IERC20(IDVM(DVMAddress)._BASE_TOKEN_()).safeTransferFrom(
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msg.sender,
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DVMAddress,
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baseAmount
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);
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receiveAmount = IDVM(DVMAddress).sellBase(to);
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require(receiveAmount >= minReceive, "RECEIVE_NOT_ENOUGH");
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return receiveAmount;
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}
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function sellQuoteOnDVM(
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address DVMAddress,
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address to,
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uint256 quoteAmount,
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uint256 minReceive
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) public returns (uint256 receiveAmount) {
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IERC20(IDVM(DVMAddress)._QUOTE_TOKEN_()).safeTransferFrom(
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msg.sender,
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DVMAddress,
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quoteAmount
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);
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receiveAmount = IDVM(DVMAddress).sellQuote(to);
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require(receiveAmount >= minReceive, "RECEIVE_NOT_ENOUGU");
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return receiveAmount;
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}
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function depositToDVM(
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address DVMAddress,
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address to,
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uint256 baseAmount,
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uint256 quoteAmount
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) public returns (uint256 shares) {
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uint256 adjustedBaseAmount;
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uint256 adjustedQuoteAmount;
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(uint256 baseReserve, uint256 quoteReserve) = IDVM(DVMAddress).getVaultReserve();
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if (quoteReserve == 0 && baseReserve == 0) {
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adjustedBaseAmount = baseAmount;
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adjustedQuoteAmount = quoteAmount;
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}
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if (quoteReserve == 0 && baseReserve > 0) {
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adjustedBaseAmount = baseAmount;
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adjustedQuoteAmount = 0;
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}
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if (quoteReserve > 0 && baseReserve > 0) {
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uint256 baseIncreaseRatio = DecimalMath.divFloor(baseAmount, baseReserve);
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uint256 quoteIncreaseRatio = DecimalMath.divFloor(quoteAmount, quoteReserve);
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if (baseIncreaseRatio <= quoteIncreaseRatio) {
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adjustedBaseAmount = baseAmount;
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adjustedQuoteAmount = DecimalMath.mulFloor(quoteReserve, baseIncreaseRatio);
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} else {
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adjustedQuoteAmount = quoteAmount;
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adjustedBaseAmount = DecimalMath.mulFloor(baseReserve, quoteIncreaseRatio);
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}
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}
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IERC20(IDVM(DVMAddress)._BASE_TOKEN_()).safeTransferFrom(
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msg.sender,
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DVMAddress,
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adjustedBaseAmount
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);
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IERC20(IDVM(DVMAddress)._QUOTE_TOKEN_()).safeTransferFrom(
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msg.sender,
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DVMAddress,
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adjustedQuoteAmount
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);
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shares = IDVM(DVMAddress).buyShares(to);
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return shares;
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}
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}
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