-
Notifications
You must be signed in to change notification settings - Fork 76
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
12 changed files
with
600 additions
and
79 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| //SPDX-License-Identifier: MIT | ||
| pragma solidity =0.7.6; | ||
| pragma experimental ABIEncoderV2; | ||
|
|
||
| import {P} from "./P.sol"; | ||
| import {SafeMath} from "@openzeppelin/contracts/math/SafeMath.sol"; | ||
| import {Call, IWell, IERC20} from "../../interfaces/basin/IWell.sol"; | ||
| import {IBeanstalkWellFunction} from "../../interfaces/basin/IBeanstalkWellFunction.sol"; | ||
| import {LibUsdOracle} from "../../libraries/Oracle/LibUsdOracle.sol"; | ||
| import {LibWellMinting} from "../../libraries/Minting/LibWellMinting.sol"; | ||
| import {LibWell} from "../../libraries/Well/LibWell.sol"; | ||
| import {C} from "../../C.sol"; | ||
|
|
||
| interface IBeanstalk { | ||
| function bdv(address token, uint256 amount) external view returns (uint256); | ||
|
|
||
| function poolDeltaB(address pool) external view returns (int256); | ||
| } | ||
|
|
||
| interface dec{ | ||
| function decimals() external view returns (uint256); | ||
| } | ||
|
|
||
| contract WellPrice { | ||
|
|
||
| using SafeMath for uint256; | ||
|
|
||
| IBeanstalk private constant BEANSTALK = IBeanstalk(0xC1E088fC1323b20BCBee9bd1B9fC9546db5624C5); | ||
| uint256 private constant WELL_DECIMALS = 1e18; | ||
| uint256 private constant PRICE_PRECISION = 1e6; | ||
|
|
||
| struct Pool { | ||
| address pool; | ||
| address[2] tokens; | ||
| uint256[2] balances; | ||
| uint256 price; | ||
| uint256 liquidity; | ||
| int256 deltaB; | ||
| uint256 lpUsd; | ||
| uint256 lpBdv; | ||
| } | ||
|
|
||
| function getConstantProductWell(address wellAddress) public view returns (P.Pool memory pool) { | ||
| IWell well = IWell(wellAddress); | ||
| pool.pool = wellAddress; | ||
|
|
||
| IERC20[] memory wellTokens = well.tokens(); | ||
| pool.tokens = [address(wellTokens[0]), address(wellTokens[1])]; | ||
|
|
||
| uint256[] memory wellBalances = well.getReserves(); | ||
| pool.balances = [wellBalances[0], wellBalances[1]]; | ||
|
|
||
| uint256 beanIndex = LibWell.getBeanIndex(wellTokens); | ||
| uint256 tknIndex = beanIndex == 0 ? 1 : 0; | ||
|
|
||
| // swap 1 bean of the opposite asset to get the usd price | ||
| // price = amtOut/tknOutPrice | ||
| uint256 assetPrice = LibUsdOracle.getUsdPrice(pool.tokens[tknIndex]); | ||
| if(assetPrice > 0) { | ||
| pool.price = | ||
| well.getSwapOut(wellTokens[beanIndex], wellTokens[tknIndex], 1e6) | ||
| .mul(PRICE_PRECISION) | ||
| .div(assetPrice); | ||
| } else { | ||
| // cannnot determine a price for bean if the other asset that bean is trading against is 0. | ||
| pool.price = 0; | ||
| } | ||
|
|
||
| // liquidity is calculated by getting the usd value of the bean portion of the pool, | ||
| // and multiplying by 2 to get the total liquidity of the pool. | ||
| pool.liquidity = | ||
| pool.balances[beanIndex] | ||
| .mul(pool.price) | ||
| .mul(2) | ||
| .div(PRICE_PRECISION); | ||
|
|
||
| pool.deltaB = getDeltaB(wellAddress, wellTokens, wellBalances); | ||
| pool.lpUsd = pool.liquidity.mul(WELL_DECIMALS).div(IERC20(wellAddress).totalSupply()); | ||
| pool.lpBdv = BEANSTALK.bdv(wellAddress, WELL_DECIMALS); | ||
| } | ||
|
|
||
| function getDeltaB(address well, IERC20[] memory tokens, uint256[] memory reserves) internal view returns (int256 deltaB) { | ||
| Call memory wellFunction = IWell(well).wellFunction(); | ||
| (uint256[] memory ratios, uint256 beanIndex, bool success) = LibWell.getRatiosAndBeanIndex(tokens); | ||
| // If the USD Oracle oracle call fails, we can't compute deltaB | ||
| if(!success) return 0; | ||
|
|
||
| uint256 beansAtPeg = IBeanstalkWellFunction(wellFunction.target).calcReserveAtRatioLiquidity( | ||
| reserves, | ||
| beanIndex, | ||
| ratios, | ||
| wellFunction.data | ||
| ); | ||
|
|
||
| deltaB = int256(beansAtPeg) - int256(reserves[beanIndex]); | ||
| } | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.