88 lines
2.6 KiB
Solidity
88 lines
2.6 KiB
Solidity
/*
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Copyright 2021 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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pragma experimental ABIEncoderV2;
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import {InitializableOwnable} from "../../lib/InitializableOwnable.sol";
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import {IERC20} from "../../intf/IERC20.sol";
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import {SafeMath} from "../../lib/SafeMath.sol";
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interface IBuyout {
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function getBuyoutQualification(address user) external view returns (bool);
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}
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contract BuyoutModel is InitializableOwnable {
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using SafeMath for uint256;
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uint256 public _MIN_FRAG_ = 100; //0.1
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uint256 public _MAX_FRAG_ = 1000; //1
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int public _BUYOUT_FEE_ = 0;
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struct FragInfo {
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uint256 minFrag;
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uint256 maxFrag;
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address buyoutAddr;
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bool isSet;
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}
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mapping(address => FragInfo) frags;
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function addFragInfo(address fragAddr, uint256 minFrag, uint256 maxFrag, address buyoutAddr) external onlyOwner {
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FragInfo memory fragInfo = FragInfo({
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minFrag: minFrag,
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maxFrag: maxFrag,
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buyoutAddr: buyoutAddr,
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isSet: true
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});
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frags[fragAddr] = fragInfo;
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}
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function setFragInfo(address fragAddr, uint256 minFrag, uint256 maxFrag, address buyoutAddr) external onlyOwner {
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frags[fragAddr].minFrag = minFrag;
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frags[fragAddr].maxFrag = maxFrag;
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frags[fragAddr].buyoutAddr = buyoutAddr;
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}
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function setGlobalParam(uint256 minFrag, uint256 maxFrag, uint256 buyoutFee) external onlyOwner {
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require(minFrag <= 1000 && maxFrag <= 1000, "PARAM_INVALID");
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_MIN_FRAG_ = minFrag;
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_MAX_FRAG_ = maxFrag;
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_BUYOUT_FEE_ = int(buyoutFee);
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}
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function getBuyoutStatus(address fragAddr, address user) external view returns (int) {
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FragInfo memory fragInfo = frags[fragAddr];
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uint256 userBalance = IERC20(fragAddr).balanceOf(user);
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uint256 totalSupply = IERC20(fragAddr).totalSupply();
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uint256 minFrag = _MIN_FRAG_;
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uint256 maxFrag = _MAX_FRAG_;
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if(fragInfo.isSet) {
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address buyoutAddr = fragInfo.buyoutAddr;
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if(buyoutAddr != address(0)) {
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bool isQualified = IBuyout(buyoutAddr).getBuyoutQualification(user);
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if(isQualified) {
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return _BUYOUT_FEE_;
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}else {
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return -1;
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}
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}
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minFrag = fragInfo.minFrag;
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maxFrag = fragInfo.maxFrag;
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}
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if(userBalance >= totalSupply.mul(minFrag).div(1000) && userBalance <= totalSupply.mul(maxFrag).div(1000)) {
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return _BUYOUT_FEE_;
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}else {
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return -1;
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}
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}
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}
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